free castor mod? - Page 4

**Turninconcepts.com** · 10-25-2007, 06:56 AM

Quote:

Originally Posted by CGMDan

tr

It's starts getting to the point of asking how much caster is too much. Yes some cars are designed with greater amount of caster, but how much can you safetly add to the STi?
I've got the WL ALK and already notice the power steering having "issues" when turning the wheel at idle.
I've got RCE springs and get rubbing on the wheel well when turning the wheel say 50% and braking at the same time at slow speeds, or turning the wheel and going over bumps at slow speeds.

I don't think I would want to add more caster.

didn't see this until now. Tom Hoppe has played quite a bit with caster. 7* is the most you want to run, and even that's getting close to the edge. higher than that and the weight jacking starts to get screwy.

**Turninconcepts.com** · 10-25-2007, 06:58 AM

Quote:

Originally Posted by fullerton

anyone with long-term updates on this?

any noticeable bushing wear?

Nope. Everything's still good. I recently checked this for a noise I was getting that was driving me batty. Took the front end apart 3 times in as many days. Turned out to be a ball joint had died without the traditional signs of death.

fullerton · 10-25-2007, 07:00 AM

seems like an easy task to accomplish.

do you think i could simply back the two bolts out, rotate the "stud" and then re-bolt without any other disassembly?

**Turninconcepts.com** · 10-25-2007, 07:07 AM

Quote:

Originally Posted by fullerton

seems like an easy task to accomplish.

do you think i could simply back the two bolts out, rotate the "stud" and then re-bolt without any other disassembly?

That's what I did. I used a friend to help move things around to line it up though. I also used a bit of locktite on the threads, because I'm a dork like that.

slidewaysteve · 04-19-2008, 02:37 PM

Quote:

Originally Posted by Turninconcepts.com

That's what I did. I used a friend to help move things around to line it up though. I also used a bit of locktite on the threads, because I'm a dork like that.

Clint,
No locktite where logical = dork
Locktite where logical = no dork
2 years ago I put 2 washers for each bolt between bushing stud and controlarm, with locktite, and got enough movement to move toe in 1/8".
I check these bolts ( and most suspension bolts) at every 3,000 mile oil change. Have had O issues.
I'll take a good look at the bushing studs when I install the TIC coilovers and Vorshlag camber plates I will be receiving soon ( I can hardly wait ).
If I can get similar movement from rotating bushing stud 180 degrees, I'll remove my washers.
Steve

Mykl · 04-19-2008, 02:42 PM

I'm running 6.8 degrees of castor. I wouldn't go higher, but this amount seems to work.

kursplat · 04-19-2008, 06:42 PM

Quote:

Originally Posted by Mykl

I'm running 6.8 degrees of castor. I wouldn't go higher, but this amount seems to work.

what are you doing to get to that point?

Mykl · 04-19-2008, 06:58 PM

Quote:

Originally Posted by kursplat

what are you doing to get to that point?

Noltec race plates

They're nice, but they're thick and eat up a lot of travel space.

**RaceComp Engineering** · 04-22-2008, 09:19 AM

Quote:

Originally Posted by Mykl

I'm running 6.8 degrees of castor. I wouldn't go higher, but this amount seems to work.

THATS a good amount !!

that has to feel good.

WOW.

Myles

slidewaysteve · 04-22-2008, 02:23 PM

Stretch,
I recall recently you mentioned a camber/castor tool from Sears you were going to try. How did it work, and what is the name and price of it?
Thanks,
Steve

sti2relaxxin · 04-23-2008, 03:53 PM

Clint (TurninConcepts); could you repost the original photo you attached on post #2? It doesn't appear anymore.

**Turninconcepts.com** · 04-23-2008, 05:57 PM

Quote:

Originally Posted by sti2relaxxin

Clint (TurninConcepts); could you repost the original photo you attached on post #2? It doesn't appear anymore.

We don't have it.

Tony

Mykl · 04-23-2008, 06:47 PM

Quote:

Originally Posted by RaceComp Engineering

THATS a good amount !!

that has to feel good.

WOW.

Myles

Oh yeah, the steering wheel has a very nice weight to it now. It also seems like steering feel and on center feel has greatly improved as well. Turn in response is sharp as a knife.

I can't make any specific comments as to exactly what effect it's had on performance based on observations behind the wheel, because the big caster number came with a lot of other suspension upgrades all at the same time. I could adjust it out and test it, but that's quite a bit of work.

I don't think I would go any higher than that though. The weight jacking effect is really obvious on a tight autocross course where sometimes the inside rear tire doesn't sit down fast enough. Usually smooth driving inputs are enough to deal with it though. On the street or track, the big caster number really seems to be completely vice free.

sti2relaxxin · 04-24-2008, 02:43 PM

Quote:

Originally Posted by Turninconcepts.com

We don't have it.

Tony

Would someone post a picture of the area that this modification applies to? I'd like to check it out but have no idea what to look for. Thanks!

fullerton · 04-24-2008, 03:16 PM

the rear mount of the control arm.

if that doesn't make any sense to you, it may be prudent to have someone experienced help you with the mod, for safety's sake.

10-25-2007, 07:00 AM	#48
fullerton abracious Car: AW GDF-D Fav Mod: Track time Location: Near a 100oct pump Posts: 16,558 Join Date: Oct 2005 Trader Rating: (10)	Re: free castor mod? seems like an easy task to accomplish. do you think i could simply back the two bolts out, rotate the "stud" and then re-bolt without any other disassembly?

04-19-2008, 02:42 PM	#51
Mykl S204 Racer Car: '04.5 STi Fav Mod: ZZYZX Location: Montgomery, Al Posts: 2,751 Join Date: Apr 2006 Trader Rating: (0)	Re: free castor mod? I'm running 6.8 degrees of castor. I wouldn't go higher, but this amount seems to work.

04-22-2008, 02:23 PM	#55
slidewaysteve Amateur STI Driver Car: silver 04 wrx sti Fav Mod: tic coilovers Location: northern calif. Posts: 34 Join Date: Nov 2007 Trader Rating: (0)	Re: free castor mod? Stretch, I recall recently you mentioned a camber/castor tool from Sears you were going to try. How did it work, and what is the name and price of it? Thanks, Steve

04-23-2008, 03:53 PM	#56
sti2relaxxin Silver Member Car: 2007 OBP/Gold Wheels Fav Mod: Prodrive Mudflaps Location: Philadelphia, Pa Posts: 884 Join Date: Apr 2004 Trader Rating: (3)	Re: free castor mod? Clint (TurninConcepts); could you repost the original photo you attached on post #2? It doesn't appear anymore.

04-24-2008, 03:16 PM	#60
fullerton abracious Car: AW GDF-D Fav Mod: Track time Location: Near a 100oct pump Posts: 16,558 Join Date: Oct 2005 Trader Rating: (10)	Re: free castor mod? the rear mount of the control arm. if that doesn't make any sense to you, it may be prudent to have someone experienced help you with the mod, for safety's sake. This ad is not endorsed by this member. Please register or login to hide this ad.