SAI way off... Alignment question - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

JDMBart · 12-28-2014, 09:05 PM

Alright so I have a s13 240sx and my SAI and included angle is way off. I'm not exactly sure what I should look into to fix this or if it is even worth my time to fix. Here are my specs. I know my car was in a small collision previously but it was only the radiator support being a little bent on the left side so I do not think it affects this. Any input would be great.

Front Left
Camber -3.1 (spec is 0- 1.5)
Caster 6.9 (Spec is 6.0-7.5)
Toe 0.10 (Spec is .02-.11)
SAI 16.6(Spec is 12.5- 14.0)
Included Angle 13.6 (spec is 11.0 to 14.0)

Front Right
Camber -3.1 (spec is 0- 1.5)
Caster 7.1 (Spec is 6.0-7.5)
Toe 0.10 (Spec is .02-.11)
SAI 22.1 (Spec is 12.5 - 14.0)
Included Angle 19.0 (spec is 11-14.0)

ixfxi · 12-28-2014, 10:56 PM

google is your friend, bud
http://www.aligncraft.com/terms/term...%20Inclination

JDMBart · 12-29-2014, 08:07 AM

Quote:

Originally Posted by ixfxi

google is your friend, bud
http://www.aligncraft.com/terms/term...%20Inclination

Thanks, tomorrow I'm going to verify straightness of the subframe, contol arm, spindle.

Def · 12-29-2014, 10:53 AM

If you have slotted coilover brackets, make sure they're pulled to the same location (I shim mine so I pull out as hard as I can so I get a consistent attachment there). This could be why yours is off.

I'd also zero out that toe. Over 3 deg camber plus that much toe is going to chew through your tires in no time.

!Zar! · 01-02-2015, 11:32 PM

What size and offset are your wheels? That has an effect on your SAI.

JDMBart · 01-02-2015, 11:41 PM

Quote:

Originally Posted by !Zar!

What size and offset are your wheels? That has an effect on your SAI.

at the time i got this alignment i had mb battles that were 17x9.5 +15

now I have wheels that are 18x10.5 and 18x11 +10.

Not sure how that will change things

!Zar! · 01-02-2015, 11:48 PM

Changing your wheels offsets and widths has an effect on your scrub radius and SAI.

You're moving the steering centerline around.

Though I might be confusing the two.

JDMBart · 01-03-2015, 08:19 AM

Quote:

Originally Posted by !Zar!

Changing your wheels offsets and widths has an effect on your scrub radius and SAI.

You're moving the steering centerline around.

Though I might be confusing the two.

Well the thing is the offset of the wheels is the same on both sides, but the sai has over a 8 degree difference

Def · 01-03-2015, 05:54 PM

Quote:

Originally Posted by JDMBart

Well the thing is the offset of the wheels is the same on both sides, but the sai has over a 8 degree difference

Upper strut bolt... read my earlier post.

JDMBart · 01-03-2015, 05:59 PM

Quote:

Originally Posted by Def

Upper strut bolt... read my earlier post.

Are you talking about the bolts at the top of the strut tower that connect the coil to the strut tower?

Croustibat · 01-05-2015, 04:10 AM

These would not affect SAI...

def is talking about the knuckle to coilover bolts.

JDMBart · 01-05-2015, 11:08 AM

Quote:

Originally Posted by Croustibat

These would not affect SAI...

def is talking about the knuckle to coilover bolts.

Thought so, I checked them the hole isn't slotted and they are in the same spot

Croustibat · 01-06-2015, 06:04 AM

meaning the car is seriously bent (SAI is around 15° ). It can be from a bent knuckle, upper chassis mount, or really crappy coilovers with poorly slotted mounts. My money would be on the knuckle though.

JDMBart · 01-06-2015, 08:15 AM

Quote:

Originally Posted by Croustibat

meaning the car is seriously bent (SAI is around 15° ). It can be from a bent knuckle, upper chassis mount, or really crappy coilovers with poorly slotted mounts. My money would be on the knuckle though.

Good input I'm going to be changing the spindle on that side along with both of the lower control arms. Doubt the stance coils are causing anything. Do you think I will be able to see a bend on the spindle?

Croustibat · 01-06-2015, 08:38 AM

Your best bet is to measure from hole to hole on a known good knucke, then check yours. i don't think you can see that by eye unless you have already seen that kind of damage, it could be just a millimeter here and there.

12-28-2014, 09:05 PM	#1
JDMBart Banned from the Marketplace Join Date: Aug 2013 Location: Chicago Posts: 340 Trader Rating: (-1) Feedback Score: -1 reviews	SAI way off... Alignment question Alright so I have a s13 240sx and my SAI and included angle is way off. I'm not exactly sure what I should look into to fix this or if it is even worth my time to fix. Here are my specs. I know my car was in a small collision previously but it was only the radiator support being a little bent on the left side so I do not think it affects this. Any input would be great. Front Left Camber -3.1 (spec is 0- 1.5) Caster 6.9 (Spec is 6.0-7.5) Toe 0.10 (Spec is .02-.11) SAI 16.6(Spec is 12.5- 14.0) Included Angle 13.6 (spec is 11.0 to 14.0) Front Right Camber -3.1 (spec is 0- 1.5) Caster 7.1 (Spec is 6.0-7.5) Toe 0.10 (Spec is .02-.11) SAI 22.1 (Spec is 12.5 - 14.0) Included Angle 19.0 (spec is 11-14.0)

12-29-2014, 10:53 AM	#4
Def Post Whore! Join Date: Apr 2004 Location: Houston, TX Posts: 2,701 Trader Rating: (16) Feedback Score: 16 reviews	If you have slotted coilover brackets, make sure they're pulled to the same location (I shim mine so I pull out as hard as I can so I get a consistent attachment there). This could be why yours is off. I'd also zero out that toe. Over 3 deg camber plus that much toe is going to chew through your tires in no time. __________________ S13 Hatch - Goes around tracks quickly DEFSPORT

01-02-2015, 11:32 PM	#5
!Zar! Post Whore! Join Date: Nov 2004 Location: North Korea Posts: 14,579 Trader Rating: (27) Feedback Score: 27 reviews	What size and offset are your wheels? That has an effect on your SAI. __________________

01-02-2015, 11:48 PM	#7
!Zar! Post Whore! Join Date: Nov 2004 Location: North Korea Posts: 14,579 Trader Rating: (27) Feedback Score: 27 reviews	Changing your wheels offsets and widths has an effect on your scrub radius and SAI. You're moving the steering centerline around. Though I might be confusing the two. __________________

12-28-2014, 10:56 PM	#2
ixfxi Post Whore! Join Date: Apr 2006 Location: bangin on my chest Account: BANNED #fucksupreme Age: 82 Posts: 5,932 Trader Rating: (3) Feedback Score: 3 reviews	google is your friend, bud http://www.aligncraft.com/terms/term...%20Inclination

01-05-2015, 04:10 AM	#11
Croustibat Nissanaholic! Join Date: Aug 2011 Location: France - Toulouse Age: 43 Posts: 1,851 Trader Rating: (0) Feedback Score: 0 reviews	These would not affect SAI... def is talking about the knuckle to coilover bolts.

01-06-2015, 06:04 AM	#13
Croustibat Nissanaholic! Join Date: Aug 2011 Location: France - Toulouse Age: 43 Posts: 1,851 Trader Rating: (0) Feedback Score: 0 reviews	meaning the car is seriously bent (SAI is around 15° ). It can be from a bent knuckle, upper chassis mount, or really crappy coilovers with poorly slotted mounts. My money would be on the knuckle though.

01-06-2015, 08:38 AM	#15
Croustibat Nissanaholic! Join Date: Aug 2011 Location: France - Toulouse Age: 43 Posts: 1,851 Trader Rating: (0) Feedback Score: 0 reviews	Your best bet is to measure from hole to hole on a known good knucke, then check yours. i don't think you can see that by eye unless you have already seen that kind of damage, it could be just a millimeter here and there.