Oil Drain questions

[96blkonblkse]

Alright guys, i dont know if its a lack of sleep or the heat, but i seriously cant figure out this drain issue.

I am inching so precariously close to gathering all the parts. I basically just need the drain fittings.

Now, heres the issue(s)

I want to run a -10AN drain line. I so far have come up with this list of parts:

Aluminum - Oil Drain Flange (T3/T4)
Oil Return Gasket - T3 or T04
Weld Bung for Oil Pan, 1/2" NPT Female

Now what i think i need is a -10 AN to 1/2NPT.

My question is, where the hell do i find one, or is there a different route, should i just stick to a 5/8 barb fitting?

Also for those of you who own turbo maxi's

Did you tap the lower or upper pan? Im curious, i know a few people who say if you tap the lower it wont drain properly, and i know few who say you can tap the lower and its fine. Whats the deal here?

Thanks
Chris

[maxgtr2000]

I wouldn't try to get fancy with the oil lines. If you are running a regular t3/t4 turbo just jump on ebay and search for oil drain kits, they will have the sizes in the kits in some of the description, then you can piece together with the sizes that way. Summit racing has some stuff.

As far as the oil drain, I have seen both ways. I think both ways will work, it just depends how picky you are. If you tap the lower, there will be standing oil in the drain line and it will be at the same horizontal level as the oil in the pan so technically it works. But I have also heard the oil comes out foamy so technically it can back up a little in the line possibly effecting the turbo oil seal. Some people tap the upper so there is no standing oil in the drain line, it drains into the pan and is done. Tapping the lower is easiest, but when I tapped my upper it was pretty easy to me cause I didn't have to take the pan off the car and was basically done in like an hour.

[96blkonblkse]

Yeah, i was looking at some of those Ebay ones. I am a little on the fence with the quality control issues, I know a lot of the stuff on there is a Hit or Miss type of thing. Either way its much simpler.

The thing that pisses me off, 39.99 plus 25$ for shipping..i guess ill just pony up and pick it up.

On the oil pan tapping thing, i think what ill end up doing is tapping the lower, im going to try see if i can find a like 5/8 or 1/2 NPT to barb fitting, being male both sides, then drilling a accordingly sized hole then tapping it and screwing it into the block. I dont have a welder but we'll see.

Tapping the uppper, i think is a much better idea, and if i am thinking correctly, if i tap the upper, in the right spot, im guessing that most of the shavings will fall, and the ones that dont ill just get out by running some oil down there with the pan off..

Im so happy, other then the fact ill be loosing my AC and with 36+ celcius days like today, im going to be dying but im sure 300 + whp will cool the car down fast lol..

[maxgtr2000]

I tapped the upper and still have a/c. I need to take some pics so i can post my official finally boosted thread, just still working out the little bugs to get the car running right. I have a front feed design, i took off the y pipe and the location where i drilled it the shavings fell on a little ledge just inside the hole. The majority of the shavings i was able to wipe out with my finger, the others I flushed through the pan with some oil through the drill hole, then ran 5 quarts of the cheap walmart stuff through the engine, let it drain out and there wasn't really anything in there. I would order a 90 degree npt elbow if you have low clearance and run the line that way after the tap if needed.
I don't know if it will save you time and money but I got my oil drain, feed, and oil pressure adapter in this kit here. http://www.stealthmodeperformance.com/oil-uni.shtml
I would call before you order because I had to order another drain hose, you will have to measure from where the turbo will be to where the tap will go to see if the hose they send in the kit will fit, if not just ask if you can get it a little bit longer.
This might be a good idea too before you finalize your oder. http://www.stealthmodeperformance.com/oil-res.shtml

[96blkonblkse]

Yeah. Its not the drain line fitting thats preventing the AC from being retained, but the turbo feed piping. I bought Neal's old turbo kit. Pretty much identical to his setup, except my T61 has a smaller AR, (.70/.68) vs. his .81 or .84.


Thanks for the help! I really appreciate it. Thats pretty much my plan, my freind whos helping me do the install has done it like that before, with no problems, so im thinking ill be better off doing the upper pan.

Im so close, im just itching to do it, other then some misc fittings, and a boost gauge ive got everything.

Maxgtr2000,

Will i need the oil line restrictor? I thought it was only the GT series(or ball bearing?) turbos that needed an oil pressure restrictor?

My T61 is just a oil cooled journal bearing turbo, nothing too fancy.

[maxgtr2000]

As far as the oil restrictor goes, Oil restrictor
I have a brand new turbo and it's been on only a couple of weeks and I already had some oil in the intercooler pipe so I need to get one. I think on the stealth site it said most turbos only need like 30 psi of oil, so stock oil pressure plus boost exceeds that.

[SpeedCrazie]

WOOT! WOOT! Andrew is boosted!!!! I WANT PICS!!! LOL Congrats man.

[choray911]

Don't worry, as long as the oil has a place to go you are good. I tapped theupper pan and it was still right at the lower cap girttal. I have been turboed for 6 years, and have yet to have a prob associated with the drain. No way in hell would I remove the AC! Re-route some thing. I'll post some pics tomorrow.

[kzoosho]

Originally Posted by choray911

Don't worry, as long as the oil has a place to go you are good. I tapped theupper pan and it was still right at the lower cap girttal. I have been turboed for 6 years, and have yet to have a prob associated with the drain. No way in hell would I remove the AC! Re-route some thing. I'll post some pics tomorrow.

Well the way that Neals old kit is made the pipes and all run right where the compressor is. Yes you could run it a different way but he already paid for a kit the way it is. He could have it modified but then he will have to change his downpipe also.

[choray911]

This is where I have mine placed.

[96blkonblkse]

Oh Alright. You are using a barb fitting for the drain line then.

Do you know what size fitting that is?

Im thinking of just getting a 5/8 barbbed fitting for the drain pan

[pmohr]

A little late on this, but just want to note that the only times we've had problems with oil drain into the lower pan on VQ35s (which should apply just the same to a regular VQ30) it's because whoever installed it was an idiot, and kinked the lines up or similar.

We use this on most of our turbo builds, and never have any problems with them.

We were going to go the easy route for Merlyn's car, but sadly with the Cattman Y the spacer won't fit

[kzoosho]

Originally Posted by pmohr

A little late on this, but just want to note that the only times we've had problems with oil drain into the lower pan on VQ35s (which should apply just the same to a regular VQ30) it's because whoever installed it was an idiot, and kinked the lines up or similar.

We use this on most of our turbo builds, and never have any problems with them.

We were going to go the easy route for Merlyn's car, but sadly with the Cattman Y the spacer won't fit

Will that work on the VQ30?

[pmohr]

Originally Posted by kzoosho

Will that work on the VQ30?

Oil pans are the same, AFAIK, so it should. The only thing you have to see is it you have an inch or two of vertical clearance directly beneath the oil pan (though I don't believe the Y on the VQ30 should come near there).

[kzoosho]

Originally Posted by pmohr

Oil pans are the same, AFAIK, so it should. The only thing you have to see is it you have an inch or two of vertical clearance directly beneath the oil pan (though I don't believe the Y on the VQ30 should come near there).

Well i have a reverse y custom made. The only think i can think of is how much lower it hangs since i am lower to hell now. I will deff look inot this.

[MDeezy]

the oil pan spacer would be a good alternative to tapping the upper pan. Saves a lot of work and about an extra quart of oil will be needed for cooling so increase lubrication abilites, and cooling abilites.

if your reverse Y goes around the lower oil pan rather than under it, you should be fine with adding this to your setup.

it will fit on the 3.0 oil pans also

[kzoosho]

Originally Posted by MDeezy

the oil pan spacer would be a good alternative to tapping the upper pan. Saves a lot of work and about an extra quart of oil will be needed for cooling so increase lubrication abilites, and cooling abilites.

if your reverse Y goes around the lower oil pan rather than under it, you should be fine with adding this to your setup.

it will fit on the 3.0 oil pans also

Ill have to take a look and make sure but i think it does go around it .

[pmohr]

Just a BTW, if any of yall end up ordering the spacer, try to get Merlyn when you call up, and be sure and mention it's for a Maxima and you're on the org...

Honestly, it probably won't result in a discount, but it'll start letting our boss know that there are modified Maximas out there, and hopefully we can start getting into that market a little.

[MDeezy]

noted.

[kzoosho]

Same. Ima try to get the money together soon. I am buying a N2O kit first then ill look into that.

[choray911]

10-4!