All MotorAll Motor Advanced Performance. Talk about Engine Swaps, Internal Engine work. Not your basic Y pipe and Intake Information.
Welcome to Maxima.org!
Welcome to Maxima.org,
You are currently viewing our forum as a guest, which gives you limited access
to view most discussions and access our other features. By joining our community, at no cost, you will have access to start new topics, reply to conversations, privately message other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join Maxima.org today!
Car is back, untuned, driveable just need an idle adjustment bad for the cams! Sounds deep though and nice. I'll post some pics and try to get a video. It's moving along very smoothly, motor feels like butter with the balancing. After the break in miles (which I'm not rushing since I'm full time working) I will be getting the tuning done in 3-4weeks ish. Can't wait to rip her wide open!
That's awesome! We are having a mini-meet in West Palm Beach tomorrow. Can you find a way to idle the car to the meet? I'll be there with my 92 Maxima VQ35.
what kind of car did you get you motor out of? and can you email me alist of what parts you used total for your swap, and finally how do you have all the 02 sensors all setup so you dont throw a code?
Yep they the C-2s, I can't tell the difference between the videos personally. In person it sounds beast though all I can say I can always swap to C-8s later, but most of the NA 350z builds on my350z used the C-2 grind so figured I'd start there. Most did not recommend the C8's based on the specs down here so I went with their recommendations.
__________________
2002 Nissan Sentra Spec V with 2003 VQ35DE FWD Maxima Motor. Sleeper. Mods - CAI/H/E 2.5 catless, JWT Clutch, VIAS removed, ported IM. 4.133:1 gears.
Current Numbers - 250WHP/268TQ untuned
Coming soon, Full motor build, High compression 96MM Pistons, Rods, everything... fully ported heads Standalone tuned.
what kind of car did you get you motor out of? and can you email me alist of what parts you used total for your swap, and finally how do you have all the 02 sensors all setup so you dont throw a code?
Well on the first page is all the performance upgrades from the stock motor. It's the sentra transmission in the maxima bell housing. Everything else from the sentra is stock, axles, motor mounts, just a modified front mount on the motor. Really not as much to it once you know what it is. I have the wheel hop aid spacers etc. to eliminate the wheel hop. Cold air intake was chopped up but I think I'm going to get a JWT pop charger setup so I don't have to worry about sucking up water. I have the crappy shorty header set too. Need to get some equal length headers later on. I have a 2.5in catback exhaust as well.
Oh and I have plenty of codes on my swap the check engine light is disabled. If you use the 2002 6 speed ECU apparently you can wire it up to be codeless, some New York City sentra club figured out how to make the swaps codeless. I guess there was an earlier model that didn't have the CAN system.
__________________
2002 Nissan Sentra Spec V with 2003 VQ35DE FWD Maxima Motor. Sleeper. Mods - CAI/H/E 2.5 catless, JWT Clutch, VIAS removed, ported IM. 4.133:1 gears.
Current Numbers - 250WHP/268TQ untuned
Coming soon, Full motor build, High compression 96MM Pistons, Rods, everything... fully ported heads Standalone tuned.
I think I need a computer with bass, I'm on a laptop, but again they are 2 different cams C2 and C8 so there would be a difference. In person though it sounds sick no other ways of describing it.
__________________
2002 Nissan Sentra Spec V with 2003 VQ35DE FWD Maxima Motor. Sleeper. Mods - CAI/H/E 2.5 catless, JWT Clutch, VIAS removed, ported IM. 4.133:1 gears.
Current Numbers - 250WHP/268TQ untuned
Coming soon, Full motor build, High compression 96MM Pistons, Rods, everything... fully ported heads Standalone tuned.
Well on the first page is all the performance upgrades from the stock motor. It's the sentra transmission in the maxima bell housing. Everything else from the sentra is stock, axles, motor mounts, just a modified front mount on the motor. Really not as much to it once you know what it is. I have the wheel hop aid spacers etc. to eliminate the wheel hop. Cold air intake was chopped up but I think I'm going to get a JWT pop charger setup so I don't have to worry about sucking up water. I have the crappy shorty header set too. Need to get some equal length headers later on. I have a 2.5in catback exhaust as well.
Oh and I have plenty of codes on my swap the check engine light is disabled. If you use the 2002 6 speed ECU apparently you can wire it up to be codeless, some New York City sentra club figured out how to make the swaps codeless. I guess there was an earlier model that didn't have the CAN system.
That's not very accurate.. EVERY mount is different, with the exception of the transmission side. To do it properly, takes a little bit of craftsmanship.. It's not "hard" to do.. but, it's not necessarily easy, either. It's taken me 3 years to perfect everything. There were changes to the design, even after you swap.
The wiring is by far, the most difficult aspect.. With a little bit of help, we have been able to get our swap codeless, but, it's a little bit of a pain in the @ss, and takes a certain ECU to make it happen.
No swap is ever "perfect".. but, give credit where it's due. I think that we've had a pretty good track record with these swaps. Your car ran for how long, without nearly any issues?
Yep they the C-2s, I can't tell the difference between the videos personally. In person it sounds beast though all I can say I can always swap to C-8s later, but most of the NA 350z builds on my350z used the C-2 grind so figured I'd start there. Most did not recommend the C8's based on the specs down here so I went with their recommendations.
I dunno.. Barry's car is an absolute animal with the C8's.. and driveability is perfectly fine. I've never had a chance to run C2's, but, Barry is making some incredible power for just having a generic reflash.
I'm interested to see what your car puts down with the C2's and the work that's been done.
That's not very accurate.. EVERY mount is different, with the exception of the transmission side. To do it properly, takes a little bit of craftsmanship.. It's not "hard" to do.. but, it's not necessarily easy, either. It's taken me 3 years to perfect everything. There were changes to the design, even after you swap.
The wiring is by far, the most difficult aspect.. With a little bit of help, we have been able to get our swap codeless, but, it's a little bit of a pain in the @ss, and takes a certain ECU to make it happen.
No swap is ever "perfect".. but, give credit where it's due. I think that we've had a pretty good track record with these swaps. Your car ran for how long, without nearly any issues?
Travis
Yes the engine ran good from your original swap, but the advertising of "solid mounts" etc. and finding out that there are the !@#tty QR25DE mounts slightly modified to fit is what my grudge still and always will be. I've been to a ton of shops since the swap and I find out things that you said were done and really weren't. EX : Swap comes with solid mounts. Get to local All Jap Cars shop and they are QR25 mounts stock... what the hell. You can't just forget to use solid mounts your advertising. So yep don't think I'll forget that crap and embarrassment.
I'd hope a stock maxima motor runs as smooth as it does on a maxima. I mean hell it definitely isn't rocket science. But as far as my C2s and build I think everyone is in for a treat with what's up my sleeve.
__________________
2002 Nissan Sentra Spec V with 2003 VQ35DE FWD Maxima Motor. Sleeper. Mods - CAI/H/E 2.5 catless, JWT Clutch, VIAS removed, ported IM. 4.133:1 gears.
Current Numbers - 250WHP/268TQ untuned
Coming soon, Full motor build, High compression 96MM Pistons, Rods, everything... fully ported heads Standalone tuned.
Hold up a second.. No, it's not rocket science, but if it was easy.. there's be a LOT more shops doing this swap. It is fairly complex, if you want it to function properly (gauges, A/C, NATS, drive by wire, etc..) You don't have a CLUE.. you drop your car off somewhere, and pay to have work done. So, for you to make claims about the level of difficulty, isn't very realistic. If you have a problem with me, then, that's fine, but, you're not going to publically bash me like that, without provoking a response on my end.
Kevin.. I have NEVER put stock mounts in ANY of my swaps.. So, I don't know where you're getting that from. You show me a SINGLE picture of one of my swaps that was done that way.. Stay Tuned uses stock rubber mounts, that are cut up and welded together. I have NEVER done a swap that way.
The torque mounts have ALWAYS been solid.. We press out the stock, rubber mount bushing, and we used to weld in 316L stainless, 1/4" plate that was water-jet cut to the size needed, along with the holes in the proper spots to line up with the VQ brackets. The front torque mount has a CNC'd 1" thick billet aluminum adapter, that goes from the solid mount, to the VQ bracket.
Since late 2007, we've switched to solid nylatron inserts..
This system has worked phenominally, and we have yet to see a failure.
You have a huge f*cking chip on your shoulder, Kevin.. and I'm not really sure why. But, it's pretty sad.. Your car ran awesome for several years, and put up some pretty damn good numbers. What was not solid about your mounts? Of course they are modified QR BRACKETS.. it has always been that way. I've posted tons of pics from dozens of swaps, showing exactly how I mount the motor into the car. So, where do you get off saying that I lied about something with the mounts?
Shops love to dog other people's work.. and that's fine.. and, yes, your swap experience did not go as smoothly as 99% of the others have.. but, the car ran great, Kevin.. and I have bent over backwards to be courteous towards you. In return, all you have done is dog me, and accuse me of lieing/doing shoddy work.. My swaps are damn near perfect.. And, 99% of the people who leave with one from my hands are happy as hell with it. You want to see top notch work?
Give me a break, man.. You have knit-picked me to death on small stuff with your car for a long time, now.. I'm honestly tired of it. None of this stuff is EVER 100% perfect.. Hell, a STOCK car isn't perfect most of the time. Small stuff comes up, and I'm pretty sure that's the ONLY kind of issues that you've ever had.
So, please take the damn chip off of your shoulder, Kevin.. This is really getting old..
Travis
Last edited by TurboS13Hatch; 09-14-2009 at 12:57 AM.
Dude... when the mounts broke the last time you just told me to go to Nissan and order an OEM one. That's what ya told me over the phone so I don't know what "modified mounts" you're talking about when you tell me to go and get the OEM mounts to fix the broken ones. I've had to replace the transmission mount and the one that's to the left of the engine bay. The shop that replaced the 2 mounts used the OEM replacements cause that's what they were. There was no difference in the rubber inserts. The skus on the old mounts matched the OEM stuff, even that picture you can see the QR mount there. If the Vboard had not gone down my whole thread of issues would have still been on there lol...
Unfortunately I'm not lucky with forums. I start a thread on myspecv and it dies, had one on the vboard disappeared lol.
Now I have a few out there for my upgraded build.
I mean what else should we talk about. How I ordered the 3" exhaust and got a 2.5" and got refunded only part of the money. Ummm ordered the SAFCii and you cancelled it off and gave me a partial refund again as well. I just hate all this intimidation of this thing being so difficult and blah blah blah. I'm going to buy another Spec V and do another VQ Swap and we'll see how difficult it is, I'll make a custom harness too I'm not pulling the one in the car apart that I have now.
And why don't shops do the swaps, dude there's no market for it. Spec Vs are pretty rare as is, not much for aftermarket parts and tuning etc. On top of that the extra money to shell out to swap engines. You think a shops going to put a banner on top of there saying we do sentra swaps come on in and grab business off that? Am I picky about a couple things, yup I'm in customer service and in sales and I am 100% on top of calls all the time and able to get ahold of. I don't offer 2.5 and 3in exhaust options at different prices and then just settle for a 2.5in system and give a partial refund of what was payed.
ANYWAYS, no further comments. Stay tuned for tuning updates for the fastest NA B15 sentra built.
__________________
2002 Nissan Sentra Spec V with 2003 VQ35DE FWD Maxima Motor. Sleeper. Mods - CAI/H/E 2.5 catless, JWT Clutch, VIAS removed, ported IM. 4.133:1 gears.
Current Numbers - 250WHP/268TQ untuned
Coming soon, Full motor build, High compression 96MM Pistons, Rods, everything... fully ported heads Standalone tuned.
Exactly, Dave.. And honestly, I've never said that the side mounts were solid.. No one has ever offered a solid side mount setup for this car, and every pic that I've ever shown shows that we modify the stock Spec V SIDE mounts with the swap. I can't make the side mounts solid, because there has to be some flex in those, in order for the torque mounts to properly line up. Every car is slightly different, and typically, the angle at which the side mounts sit can change a few degrees.. which is enough to throw off the bolt alignment if it would be solid.
The torque mounts, which are the most critical, have ALWAYS been solid. It's no secret.. I've never lied about it, or tried to hide anything.
Yes, I did cancel the AFC install, because it would have interfered with the tach adapter that we were using at the time. And, yes, I did go with the 2.5" versus 3", because it would have taken several more weeks to get the 3" tubing in from VRS. I refunded you partially, and there were a few things that I did extra.. so it was a wash, Kevin.
You can't please everyone, unfortunately, and this is just one of those instances.. It's easy for you to sit there and bark out claims, when you have no friggen clue as to what it takes to make this stuff happen. It's just this type of uninformed jibberish that starts trouble for no reason. I have never been ugly with you.. and I've put up with a lot of complaining.. I'm just sick of it, and I'm not going to sit here and let you trash me for no goddamn reason.
Go ahead and build your car, Kevin.. But, it won't be the fastest N/A Sentra.. I can assure you. We took that crown last year, and we'll up the ante again this fall with Barry's car.
Hey I'm not the only one with work from you that's had an issue, I've talked to others so nobody else bothers to mention anything. That's why it just started to build on me with some of the crap, multiple end users of your work with issues... Anywho, fi-r.net was supposed to be public wasn't it? Didn't know you were going to control things and stuff. Funny how you blew up and banned me instantly. The Specvforum and thespecvboard guys are right about you... Man and I had never talked to anyone interested in getting a swap about how mine went I just directed them to ask you for more information. Now all Florida meets will be ill advised about that I can assure you =). Once again Travis with his excellent customer service shutting out a customer. Can't you accept criticism and then move on, you gota learn that the customer is always right but this industry has trouble with that. Oh well. Moving on.
You know that when I first received the car back it didn't have a front mount at all. And that's when it broke up side mounts instantly. I was like WTF.
__________________
2002 Nissan Sentra Spec V with 2003 VQ35DE FWD Maxima Motor. Sleeper. Mods - CAI/H/E 2.5 catless, JWT Clutch, VIAS removed, ported IM. 4.133:1 gears.
Current Numbers - 250WHP/268TQ untuned
Coming soon, Full motor build, High compression 96MM Pistons, Rods, everything... fully ported heads Standalone tuned.
Hey I'm not the only one with work from you that's had an issue, I've talked to others so nobody else bothers to mention anything. That's why it just started to build on me with some of the crap, multiple end users of your work with issues... Anywho, fi-r.net was supposed to be public wasn't it? Didn't know you were going to control things and stuff. Funny how you blew up and banned me instantly. The Specvforum and thespecvboard guys are right about you... Man and I had never talked to anyone interested in getting a swap about how mine went I just directed them to ask you for more information. Now all Florida meets will be ill advised about that I can assure you =). Once again Travis with his excellent customer service shutting out a customer. Can't you accept criticism and then move on, you gota learn that the customer is always right but this industry has trouble with that. Oh well. Moving on.
You know that when I first received the car back it didn't have a front mount at all. And that's when it broke up side mounts instantly. I was like WTF.
Sure, Kevin.. Dozens upon dozens of people are all lieing to me when they tell me that they are happy with thier cars..? Why don't you let me know who those people were? Get real man..
I banned you from my site, because you talk out of both sides of your mouth. You have no problem asking me about something, then, turning around and calling me a liar on this site. No site is "publically owned". It is a privaledge to post on ANY forum.. I don't care to have you on MY site any longer, if you're going to act this way. Again, I have NEVER been ugly with you, and this was uncalled for. Thespecvboard, I could care less about.. but, I know damn good and well that Kael and most of the crew over at specvforum have a ton of respect for me.
You are NOT right, in this case.. and I have a firm belief that you simply cannot please EVERY customer. Some people have screws loose, or just can't comprehend the whole picture. You can tell people whatever you want, Kevin.. Do you really believe that you're going to ruin my reputation with outlandish claims? People see my work, and they know that I don't mess around. But, I'm not a push-over, and I'm not going to sit here and take bashing from someone (customer or not), when it is not justified.
You have very unreasonable expectations, Kevin.. and I simply can't deal with that. I will say that you car ran just fine, with the exception of some minor teething issues, that come with ANY swapped car. Also, your car was one of the earlier ones that we did, and it had a few more issues than most. But, that's just the nature of this game. It doesn't mean that I f*cked you over, or lied to you.. or whatever.. It simply means that at that time, the swap wasn't 100% perfect. You want to try and crucify me for that? Then, that's your choice, but, I won't associate with you, and I won't have you on my forum. Good luck with your car.
Travis
Last edited by TurboS13Hatch; 09-15-2009 at 05:20 PM.
Sorry to the people on the .org.. This should not have gone down like it did. I am done in this thread, as I feel that I have defended myself and said what I had to say.
Anywho, back to business as stated before, get ready for a real NA build the right way. =)
I am envious of your build. I want the funds to do this. Sales must be hoppin??? As much of the crap you may or maynot have experienced in your build, it still was done and is your current building block. You might have your differences, however this guy did do you a service that about 98% of shops wouldn't shake a stick at due to liability issues. You would not be at this stage without his help, and personally I think you owe him at least that credit. You two have differences that should be discussed in private, or court if it's that bad, not here on the forum. Your current build is nice and can't wait to see the results. that is what this thread should be about. As for Motor mounts, Nissan motor mounts suck even for our 6th gens. They are not strong enough for the torque this engine puts out stock. Might want to look at inserts or making your own poly mounts. There are kits out there. Post some pics of the build if you would and dyno sheets. Also do you plan on tracking your ride. Curious to see what numbers you put up for the quarter mile. If 300whp I would venture to guess mid 13's n/a. With your build I bet a 75 shot of NO2 would put you in the low 12's. There is a 6th gen that has a 75shot in a stock vq who ran a 12.8 1/4 mile.
I am envious of your build. I want the funds to do this. Sales must be hoppin??? As much of the crap you may or maynot have experienced in your build, it still was done and is your current building block. You might have your differences, however this guy did do you a service that about 98% of shops wouldn't shake a stick at due to liability issues. You would not be at this stage without his help, and personally I think you owe him at least that credit. You two have differences that should be discussed in private, or court if it's that bad, not here on the forum. Your current build is nice and can't wait to see the results. that is what this thread should be about. As for Motor mounts, Nissan motor mounts suck even for our 6th gens. They are not strong enough for the torque this engine puts out stock. Might want to look at inserts or making your own poly mounts. There are kits out there. Post some pics of the build if you would and dyno sheets. Also do you plan on tracking your ride. Curious to see what numbers you put up for the quarter mile. If 300whp I would venture to guess mid 13's n/a. With your build I bet a 75 shot of NO2 would put you in the low 12's. There is a 6th gen that has a 75shot in a stock vq who ran a 12.8 1/4 mile.
Of course I'm happy that I got the VQ in the car to begin with. But everytime someone other than Travis decides to mess with their car it's always, are you sure you can do that, VQs are difficult and it sounds intimidating. I took it to a performance shop here, the car was tore down in 1 day. Machinist took a while for the other stuff. And it was rebuilt in a day and a half once all the parts were there. After this whole build not only do I understand 50x more about engines, it's really just not as hard as people make it sound on these online forums. I am excited about the results and the issues with Travis were from a couple years ago and not worth the time in a court or anything like that. The guy who did my build has put RB26DETT in G35s. Custom everything and then swapped back to VQ35s, A/c working and all. I trust if I decide to build another VQ swap for boost he'll be able to build his own harness and get it up and running ( this would be my 2nd spec v)
__________________
2002 Nissan Sentra Spec V with 2003 VQ35DE FWD Maxima Motor. Sleeper. Mods - CAI/H/E 2.5 catless, JWT Clutch, VIAS removed, ported IM. 4.133:1 gears.
Current Numbers - 250WHP/268TQ untuned
Coming soon, Full motor build, High compression 96MM Pistons, Rods, everything... fully ported heads Standalone tuned.
I agree once you know an engine they are pretty much all the same until you get into hybrids and what not. Just watching builds on HP tv helps alot. With the right tools and basic knowledge anything is possible. I have never torn down a transmission but plan on doing it soon. Record everything I take out in order and replace in reverse order. Use torque specs from a repair manual I am getting. sounds complex when you think about all the gears and parts, but should be pretty simple. That's pretty cool that the transmission bolted up. Did you have to do anything to beef it up? Our 5 speed auto trannies suck.
I am envious of your build. I want the funds to do this. Sales must be hoppin??? As much of the crap you may or maynot have experienced in your build, it still was done and is your current building block. You might have your differences, however this guy did do you a service that about 98% of shops wouldn't shake a stick at due to liability issues. You would not be at this stage without his help, and personally I think you owe him at least that credit. You two have differences that should be discussed in private, or court if it's that bad, not here on the forum. Your current build is nice and can't wait to see the results. that is what this thread should be about. As for Motor mounts, Nissan motor mounts suck even for our 6th gens. They are not strong enough for the torque this engine puts out stock. Might want to look at inserts or making your own poly mounts. There are kits out there. Post some pics of the build if you would and dyno sheets. Also do you plan on tracking your ride. Curious to see what numbers you put up for the quarter mile. If 300whp I would venture to guess mid 13's n/a. With your build I bet a 75 shot of NO2 would put you in the low 12's. There is a 6th gen that has a 75shot in a stock vq who ran a 12.8 1/4 mile.
With 300whp he'll be running low 12's n/a maybe better. With a 75 shot he'd easily be in the 11's. I dyno'd my car and it netted around 235whp and I ran a 12.9 on drag radials...
__________________ My CarDomain N/A on D/R's 12.9 @ 105 1.9 60ft
Of course I'm happy that I got the VQ in the car to begin with. But everytime someone other than Travis decides to mess with their car it's always, are you sure you can do that, VQs are difficult and it sounds intimidating. I took it to a performance shop here, the car was tore down in 1 day. Machinist took a while for the other stuff. And it was rebuilt in a day and a half once all the parts were there. After this whole build not only do I understand 50x more about engines, it's really just not as hard as people make it sound on these online forums. I am excited about the results and the issues with Travis were from a couple years ago and not worth the time in a court or anything like that. The guy who did my build has put RB26DETT in G35s. Custom everything and then swapped back to VQ35s, A/c working and all. I trust if I decide to build another VQ swap for boost he'll be able to build his own harness and get it up and running ( this would be my 2nd spec v)
I never meant to come off like that.. I got into it with Stay Tuned, but I appologized to them, publically, and since, have worked with them on getting codes taken care of.
This is an easy swap.. for a shop/person that deals with VQ's in/out, on a daily basis. It's not just a simple swap for the average person, with basic wrenching skills. And, that's not an insult.. it's just the way that it is.
I appologize for the problems that you had.. and I appologize for fightning with you on here. Good luck with your build..
I am envious of your build. I want the funds to do this. Sales must be hoppin??? As much of the crap you may or maynot have experienced in your build, it still was done and is your current building block. You might have your differences, however this guy did do you a service that about 98% of shops wouldn't shake a stick at due to liability issues. You would not be at this stage without his help, and personally I think you owe him at least that credit. You two have differences that should be discussed in private, or court if it's that bad, not here on the forum. Your current build is nice and can't wait to see the results. that is what this thread should be about. As for Motor mounts, Nissan motor mounts suck even for our 6th gens. They are not strong enough for the torque this engine puts out stock. Might want to look at inserts or making your own poly mounts. There are kits out there. Post some pics of the build if you would and dyno sheets. Also do you plan on tracking your ride. Curious to see what numbers you put up for the quarter mile. If 300whp I would venture to guess mid 13's n/a. With your build I bet a 75 shot of NO2 would put you in the low 12's. There is a 6th gen that has a 75shot in a stock vq who ran a 12.8 1/4 mile.
That's really all I've ever wanted.. Credit for doing the swap.. I put a lot of time into each and every one of the cars that I build.. and, while some of the early cars weren't as "complete" as the ones that were built later.. I still gave it 100%. When you have that credit taken away.. it really sucks.. and it's something that eats at you.
As far as his ET/MPH.. A bolted spec at 235-240whp will run 12.90's @ 104-105mph on a 24 x 8" slick. We've done it numerous times.. along with customers.
Barry's car ran 12.20's @ 110-111mph.. He had bolt-on's, C8 cams/springs, ported heads (stock valves), and 11.5:1 C/R. Tuning via T/S generic reflash.. from his MPH and weight.. I'm guessing that his car is making around 300whp.. give or take..
So, Kevin should be right around those times on a cool day, with good traction.
Yep sounds like I'll be right around there maybe a tad more You will always have credit for putting the motor in the car and it running and that's it. I thought you had an aggressive T/S flash in his car.
__________________
2002 Nissan Sentra Spec V with 2003 VQ35DE FWD Maxima Motor. Sleeper. Mods - CAI/H/E 2.5 catless, JWT Clutch, VIAS removed, ported IM. 4.133:1 gears.
Current Numbers - 250WHP/268TQ untuned
Coming soon, Full motor build, High compression 96MM Pistons, Rods, everything... fully ported heads Standalone tuned.
Thanks.. that's all that I was really looking for..
Barry's car has a decent tune, His biggest problem is 11.5:1 C/R on pump gas, and 100 degree heat. Combined with repeated floggings at the drag strip.. and he had some detonation issues. We're going to knock the compression ratio down just a tad, and go with a big bore/sleeved setup.. which should more than make up for the small drop in compression ratio. This will allow him to run more aggresive timing on pump gas, without detonation, and should yield more power from the 1/2 liter bump in displacement.
Thanks.. that's all that I was really looking for..
Barry's car has a decent tune, His biggest problem is 11.5:1 C/R on pump gas, and 100 degree heat. Combined with repeated floggings at the drag strip.. and he had some detonation issues. We're going to knock the compression ratio down just a tad, and go with a big bore/sleeved setup.. which should more than make up for the small drop in compression ratio. This will allow him to run more aggresive timing on pump gas, without detonation, and should yield more power from the 1/2 liter bump in displacement.
Travis
I'm 100% sure you have thought of this (meth) but what is your/owners reason for not using meth to control knock on his setup?
Thanks.. that's all that I was really looking for..
Barry's car has a decent tune, His biggest problem is 11.5:1 C/R on pump gas, and 100 degree heat. Combined with repeated floggings at the drag strip.. and he had some detonation issues. We're going to knock the compression ratio down just a tad, and go with a big bore/sleeved setup.. which should more than make up for the small drop in compression ratio. This will allow him to run more aggresive timing on pump gas, without detonation, and should yield more power from the 1/2 liter bump in displacement.
Travis
Hate to really get this too off-topic but all else being equal a larger bore may diminish a particular engine's knock suppression ability; especially with the aready knock-prone VQ35 heads. Simply more area for the flame front to cover (when flame travel speed is a constant). Despite the fact that this could nullify (or partially offset) the drop in compression this setup should probably make more power overall due to raw mechanical advantage, as you said. Just wanted to sprinkle in another angle.
P.S. I wonder if the smaller than spec squish clearance had anything to do with the knock he was experiencing or if it actually helped.
__________________
Tuning a car isn't a crime, but spelling it "tunning" ought to be. - ....
I'm 100% sure you have thought of this (meth) but what is your/owners reason for not using meth to control knock on his setup?
The car wasn't pinging when it was tuned.. as it was cold outside when we built it. And, the owner couldn't hear it pinging when he ran it this summer. I don't really care to rely on alky/meth injection.. to me, it's just another thing to worry about failing.
But, from the start, we didn't feel that it was necessary.. as the car showed no signs of detonation.
Let me know.
Mods - CAI/H/E 2.5 catless, JWT Clutch, VIAS removed, ported IM. 4.133:1 gears.
I can always swap to C-8s later, but most of the NA 350z builds on my350z used the C-2 grind so figured I'd start there. Most did not recommend the C8's based on the specs down here so I went with their recommendations.
Get real man..
You will always have credit for putting the motor in the car and it running and that's it. I thought you had an aggressive T/S flash in his car.
Linear Mode
