Spec Twin? - Page 47 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Twinz · 11-17-2017, 03:51 PM

Quote:

Originally Posted by tony_r

Close to -3.5 with +40.

Maybe with tires that don't run as wide as the Rival S's.

I think this was -2.9 40mm offset Ultraforms:

tony_r · 11-17-2017, 04:07 PM

Quote:

Originally Posted by Twinz

Maybe with tires that don't run as wide as the Rival S's.

Yep, with a Rival S' on the Advanti Storm S1 + 5mm spacers.

Twinz · 11-17-2017, 04:43 PM

Quote:

Originally Posted by tony_r

Yep, with a Rival S' on the Advanti Storm S1 + 5mm spacers.

If I add another .5 degrees of negative camber, the tire will be all over the suspension.

I suspect the discrepancy is between our measuring equipment. I'm not to concerned about it though. We will all be running the same struts, springs and tires. Minimum clearance should pretty much be the same from car to car, so real camber up front should be in the noise between cars.

tony_r · 11-17-2017, 04:50 PM

Quote:

Originally Posted by Twinz

I suspect the discrepancy is between our measuring equipment. I'm not to concerned about it though. We will all be running the same struts, springs and tires. Minimum clearance should pretty much be the same from car to car, so real camber up front should be in the noise between cars.

You doubt Scott Fraser's alignment rack!?!?! /s

Could be a number of things. Different wheels change some measurements for sure. Lip can make the tire narrower or raise the location a hair. Plus the inclusion of spacers might change things ever so slightly, as well.

Spec isn't always spec, lol.

Twinz · 11-17-2017, 04:55 PM

Quote:

Originally Posted by tony_r

You doubt Scott Fraser's alignment rack!?!?! /s

Could be a number of things. Different wheels change some measurements for sure. Lip can make the tire narrower or raise the location a hair. Plus the inclusion of spacers might change things ever so slightly, as well.

Spec isn't always spec, lol.

Got a pic of your clearance?

iLuveKetchup · 11-17-2017, 05:55 PM

I’m running -3.6 on +40 with Nexens.

solort · 11-18-2017, 10:35 PM

What is the wheel offset? And what is the wheel offset rules for Spec Twin? Can you go + or -7mm offset and use spacers?

edj · 11-18-2017, 11:09 PM

Quote:

Originally Posted by solort

What is the wheel offset? And what is the wheel offset rules for Spec Twin? Can you go + or -7mm offset and use spacers?

40mm or greater offset
can use spacers to get there

rande · 11-18-2017, 11:46 PM

Are the spacer counted as wheel weight?

iLuveKetchup · 11-19-2017, 12:21 AM

Quote:

Originally Posted by rande

Are the spacer counted as wheel weight?

Weight of the spacers cannot be counted for the weight of the wheel.

On another note, do you guys have issues with the SPC LCA unable to hold camber? It seems to go out of alignment spec easily.

tony_r · 11-19-2017, 03:51 AM

Quote:

Originally Posted by iLuveKetchup

Weight of the spacers cannot be counted for the weight of the wheel.

On another note, do you guys have issues with the SPC LCA unable to hold camber? It seems to go out of alignment spec easily.

I was worried that might be a thing. Probably have to over torque to the eccentric like the Miatas.

Our car looks like the RR toe is out of place, mean to check it soon. Might have the same issue.

Radster · 11-19-2017, 11:13 AM

Oil cooler!

"We have some news coming out of the SEB Face to Face meeting this weekend.

Doug will post an updated version of the SSC rules this week.

Two changes

Exhaust - The minimum weight will remain as written.
The follow lines will be REMOVED
Material for cosmetic exhaust tips is not restricted.
Track pipes” and “straight pipes” are not allowed.

The following line will be ADDED;
An engine oil cooler may be added."

Also, spec tire announcement eta mid-january

Was just posted on the FB group.

tigermack · 11-19-2017, 06:26 PM

Why'd you need an oil cooler? lol

FirstWinter · 11-19-2017, 06:31 PM

Quote:

Originally Posted by tigermack

Why'd you need an oil cooler? lol

For people who track with one.

11-19-2017, 06:26 PM	#657
tigermack STX 188 Join Date: Mar 2014 Drives: STX BRZ Location: Bay Area, CA Posts: 881 Thanks: 830 Thanked 624 Times in 308 Posts Mentioned: 10 Post(s) Tagged: 0 Thread(s)	Why'd you need an oil cooler? lol __________________ STX BRZ #188 prev - #188 FSP MZ3 & STX e36 http://tigermack.zenfolio.com/p671136114

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