Advanced Suspension, Chassis, and Braking Talk about suspension geometry, advanced handling/chassis setup, custom brakes, etc. NOT your basic brake pads and "best drop" Information.

Alignment experts...SAI and Included angle off...points to?

Old 02-06-2010, 06:33 PM
  #1  
Senior Member
Thread Starter
iTrader: (1)
 
ridinwitha35's Avatar
 
Join Date: Mar 2009
Location: Midwest
Posts: 620
Question Alignment experts...SAI and Included angle off...points to?

I recently made a thread regarding my ride height appearing odd. So I got an alignment just for kicks (and since I had replaced by rack boots a couple weeks ago & had knocked the alignment out a bit).

Results:


Text-only version:
Front SAI: 10.6 deg L, 18.5 deg R (in-spec: 13.5 - 15)
Front toe: 0.9 deg L, 0.37 deg R (in-spec: 0.00 - 0.10)

Not surprised about toe but am about the SAI. I've done some research & pretty much all I read is that if your SAI is out, something's bent.

This page reports:
SAI is a built-in nonadjustable angle and is used with camber and the included angle to diagnose bent spindles, struts and mislocated crossmembers.
As well as this page saying:
if the SAI is different from side to side, it will cause a pull at very slow speeds. [...] The most likely cause for SAI being out is bent parts which must be replaced to correct the condition.
Is it a 100% chance that something's bent? Could it be possible that installing 16" wheels where stock was 17" could cause SAI to go out (even if the OD is the same)?

I have practically a new suspension in there...struts & mounts, fstb, control arms, swaybar end-links, steering rack & tie rods. Assuming all of those are [still] good, only other thing is the knuckle/wheel bearings, but I don't have any movement of the wheel at 12 & 6 to make me believe those are bad.

Any ideas to explain my SAI/Included angle being out given the info above? Can someone decode those numbers & possibly explain what could be amiss?
ridinwitha35 is offline  
Old 02-09-2010, 05:43 PM
  #2  
Conecarver
iTrader: (19)
 
BEJAY1's Avatar
 
Join Date: Sep 2000
Location: NW Chicago burbs
Posts: 3,855
What's really strange is one SAI is low and the other is high. And by 8% which is huge. That's too much for just play in bolts or bj's or solved by this.MacPherson Strut Troubleshooting Chart

I'm no expert but wonder if the rack got shifted too far to the left.
BEJAY1 is offline  
Old 02-10-2010, 10:41 AM
  #3  
Senior Member
iTrader: (18)
 
Shift_Max's Avatar
 
Join Date: Dec 2009
Location: NOVA
Posts: 1,031
does the car pull though?
Shift_Max is offline  
Old 02-10-2010, 04:12 PM
  #4  
STFU n00b!
iTrader: (44)
 
Matt93SE's Avatar
 
Join Date: Aug 2000
Location: Houston
Posts: 18,095
Did you ever pull your steering wheel or steering rack off the car?

Crawl back under the car and measure/count the number of threads showing on each outer tie rod end. You might have a whole bunch of thread on one and not much on the other. That would basically be where Bejay is going with his train of thought.

You might have to turn the whole thing a bit to center the tie rods up and see if that changes things. If that gets SAI back into spec, then remove the steering wheel and replace it pointing straight up.
Matt93SE is offline  
Old 02-12-2010, 05:59 AM
  #5  
Senior Member
Thread Starter
iTrader: (1)
 
ridinwitha35's Avatar
 
Join Date: Mar 2009
Location: Midwest
Posts: 620
Yes, the car does pull (mainly to the left).

Also, the steering rack was just replaced (Christmas weekend, 2009), though I don't think they removed the steering wheel (went to a shop).

Thing is, after the new rack was put in & I got an alignment, I don't remember seeing red for SAI/Included-Angle; I just remember the toe was out by about a full degree on both sides.

It wasn't until after I replaced my steering rack boots (couple weeks ago) & got another alignment that you see the numbers in my first post. And the reason I had to replace the boots so soon after getting the rack installed was because I guess the shop who put the new rack in didn't grease the tie rod/boot connection & so when I got the alignment and they had to twist the inner tie rod so much, left my driver side boot like this:

...and my passenger side boot completely torn:

...which looks like a rotational tear.

So basically you guys are saying if the rack housing hasn't physically shifted, centering the rods a bit & realigning the steering wheel might resolve this? I'll give it a try. I have Lifetime Alignments - they just hate seeing me so much.

PS: New stuff put on this car (starting 2009) [I did everything except the rack]:
- Tires (Kumho Ecsta ASX)
- Swaybar end-links (Moog)
- Swaybar bushings (Moog)
- PS fluid drain/fill (Mobil-1 Synth ATF)
- Inner & outer tie rods (Moog)
- Struts/Shocks & all mounts/bearings (KYB GR2, Monroe mounts)
- Both control arms
- Rack & pinion

Last edited by ridinwitha35; 02-12-2010 at 06:03 AM.
ridinwitha35 is offline  
Old 02-12-2010, 10:12 AM
  #6  
Jesus was a Zombie.
iTrader: (7)
 
BenStoked's Avatar
 
Join Date: Aug 2007
Location: OKC, OK
Posts: 3,965
why did they replace the rack, but not the boots?? that makes absolutely no sense.
I got a reman rack from AutoZone, came with boots, inner tie rod, etc. all I had to do was purchase outer tie rod ends, and swap the jam nuts (forgot to take them off the old one so I had to buy new ones ).
I say that because most shops get their stuff from AZ, napa, etc...
BenStoked is offline  
Old 02-12-2010, 08:00 PM
  #7  
Senior Member
Thread Starter
iTrader: (1)
 
ridinwitha35's Avatar
 
Join Date: Mar 2009
Location: Midwest
Posts: 620
Originally Posted by BenStoked
why did they replace the rack, but not the boots?? that makes absolutely no sense.
I got a reman rack from AutoZone, came with boots, inner tie rod, etc. all I had to do was purchase outer tie rod ends, and swap the jam nuts (forgot to take them off the old one so I had to buy new ones ).
I say that because most shops get their stuff from AZ, napa, etc...
The rack was a loaded (re-manufactured) rack - inner & outer tie rods and boots were included. So new boots were on the rack at the time of install. At the time of alignment is when the boots were destroyed (alignment was so far out that it required a lot of twisting of the inner tie rods - and due to the boot not being greased on the inner tie rod, this caused the boot to seize and twist with the tie rod).

I purchased the rack myself off eBay & had it installed at a shop.
ridinwitha35 is offline  
Old 02-15-2010, 08:40 PM
  #8  
Senior Member
Thread Starter
iTrader: (1)
 
ridinwitha35's Avatar
 
Join Date: Mar 2009
Location: Midwest
Posts: 620
I adjusted the tie rods - as mentioned, the driver's side had noticeably less thread than the passenger side:

Driver:


Passenger:


So I adjusted by 4 equal turns (driver's side unscrewed 4, passenger side screwed-in 4). So now my steering wheel is off center, as Matt said it would be.


Tried to take the wheel off but it looks like I need a steering wheel puller.
ridinwitha35 is offline  
Old 02-16-2010, 05:17 AM
  #9  
Conecarver
iTrader: (19)
 
BEJAY1's Avatar
 
Join Date: Sep 2000
Location: NW Chicago burbs
Posts: 3,855
Tried to take the wheel off but it looks like I need a steering wheel puller.
I think there's a pin you remove from under the dash, recenter, and reconnect.
BEJAY1 is offline  
Old 02-16-2010, 08:52 PM
  #10  
Senior Member
iTrader: (1)
 
stillpimpin's Avatar
 
Join Date: Jul 2008
Location: sunrise
Posts: 100
Looking at your print out yes your SAI is out its possible your lower control arm is bent or your bushing on the control arm are worn, but is no big deal. Unless your camber was out then U would be concern. The print out does look fine, it really up to you if you want to spend the cash over nothing really, and yes I do alignments everyday trust me nothing to be worried about..
stillpimpin is offline  
Old 02-20-2010, 07:57 AM
  #11  
STFU n00b!
iTrader: (44)
 
Matt93SE's Avatar
 
Join Date: Aug 2000
Location: Houston
Posts: 18,095
You'll have to pull the wheel to get it lined back up. or you can get under the car and disconnect the rack while the wheels are centered, then center the steering wheel and reconnect the linkage. it'll be easier to pull the steering wheel and recenter there though.

Sounds to me like you need to go to a different shop if they can't even align the car without tearing the steering rack boots. that's a pretty effin simple thing to do, and they were just too damn careless about their work. Lifetime alignment or not, I'd find a different shop if those guys don't pay for the parts to replace the boots and whatnot. that's just **** poor work, IMO.
Matt93SE is offline  
Old 02-21-2010, 05:30 PM
  #12  
Senior Member
iTrader: (7)
 
QNO_A32's Avatar
 
Join Date: Nov 2007
Location: NY
Posts: 1,107
agreed, I do many alignments and thats just so fcukin lazy right there...smh.
QNO_A32 is offline  
Old 02-22-2010, 06:12 PM
  #13  
Senior Member
Thread Starter
iTrader: (1)
 
ridinwitha35's Avatar
 
Join Date: Mar 2009
Location: Midwest
Posts: 620
Yeah, see I thought about that too, going back & complaining. But sometimes you just gotta do things yourself to get it done to your satisfaction.

But, in other news, I sold the car, so no longer chasing this issue. I apologize to any future readers who were looking to see if adjusting the tie rods really fixed the SAI.
ridinwitha35 is offline  
Old 02-22-2010, 09:03 PM
  #14  
STFU n00b!
iTrader: (44)
 
Matt93SE's Avatar
 
Join Date: Aug 2000
Location: Houston
Posts: 18,095
LOL! Now that's a way to fix the problem. just sell the SOB!
Matt93SE is offline  
Old 02-23-2010, 05:05 AM
  #15  
Conecarver
iTrader: (19)
 
BEJAY1's Avatar
 
Join Date: Sep 2000
Location: NW Chicago burbs
Posts: 3,855
So if you just don't like the Maxima steering/suspension, just change cars...
BEJAY1 is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
trsandrew
7th Generation Maxima (2009-2015)
17
04-08-2016 06:45 PM
knight_yyz
5th Generation Classifieds (2000-2003)
12
11-01-2015 01:34 PM
trsandrew
Group Deals / Sponsors Forum
2
10-25-2015 02:47 PM
DC_Juggernaut
7th Generation Maxima (2009-2015)
4
09-28-2015 04:07 PM


Thread Tools
Search this Thread
Quick Reply: Alignment experts...SAI and Included angle off...points to?



All times are GMT -7. The time now is 01:40 AM.