rear lc relocation brackets.

[TA28]

had my fr500c at cobra auto there suspension guy stated my rear lower control arm angle is off . I see ford sells relocation brackets are these for changing the lc angle. I change the fr500 controls arms to hiem/alum sweg tube set up. thanks chris

 

[VoodooBoss]

They should work if that's what you're asking.

 

[stuntman]

"Off" is relative. Changing the geometry will change the balance and handling.

Don't put a heim joint in the 3rd lnkl.

 

[DocB]

Why not?

 

[stuntman]

You need some compliance in the 3rd link, otherwise you'll greatly hurt rear grip.

 

[TA28]

by compliance you mean movement? my old 69/70 boss 302 we used mono ball/heim joints every where. I can't see solid 3rd link hurting grip. as long as its not binding and you have free travel. the boss 302r lrc are mono balled and center link is same . but difference is these cars use cortex racing watts links .
the car is ex rehagen/kohr fr500c car. this is not a sunday tracker Monday driver.
what was explained to me was the lrc needs to be more +angle than stock 5.5 degree negative angle. this is fine for drag racing but road race cars require more of a + angle and this is what I think the FRPP relocation bracket do. I have spec sheet this wasn't 150$ wheel alignment ,laser tabled 4 corner/cross weighted caster, camber,toe, bumpsteer,rear pinion angle ,rears track every adjustable spots were all checked. and all specs came from rehagen/kohr also jim seafuse .

but I will bring the original center link when I go to the glen if it feels funky.
thanks chris

 

[stuntman]

Try swapping out the Monoball 3rd link to a small diameter rubber 3rd link like the Roush one from one session to another. Youll be blown away with the rear grip difference.

All the fast guys racing FR500C & 302Rs never ran Monoball 3rd links, including Andrew Aquilante who posts here.

 

[Grant 302]

Try swapping out the Monoball 3rd link to a small diameter rubber 3rd link like the Roush one from one session to another. Youll be blown away with the rear grip difference.

All the fast guys racing FR500C & 302Rs never ran Monoball 3rd links, including Andrew Aquilante who posts here.

I thought it wasn't allowed?

@ajaquilante @blacksheep-1

 

[DocB]

So you wouldn't run something like this:
https://www.steeda.com/steeda-mustang-rear-upper-control-arm-555-4106.html
And this:
https://www.steeda.com/steeda-mustang-spherical-bearing-555-4104.html

 

[stuntman]

So you wouldn't run something like this:
https://www.steeda.com/steeda-mustang-rear-upper-control-arm-555-4106.html
And this:
https://www.steeda.com/steeda-mustang-spherical-bearing-555-4104.html

If you want to hurt grip and create no benefit. This one is good:

https://www.cjponyparts.com/roush-t...fXiKp2rLDgzi7hYNeFCec0GTRfkTWl7xoCHqwQAvD_BwE

 

[Grant 302]

So you wouldn't run something like this:
https://www.steeda.com/steeda-mustang-rear-upper-control-arm-555-4106.html
And this:
https://www.steeda.com/steeda-mustang-spherical-bearing-555-4104.html

Both of those together will also bang around since there's nothing to keep the arm from flopping over.

Personally, I don't see the problem if the axle side OEM bushing is retained.

 

[blacksheep-1]

In PWC you have to run stock pickup points and specified parts, I'm not sure about T1 specs, the thing is I don't believe anyone wanted to change because the car worked so well, at Laguna Seca we ran the Sprint race with Kurt and AJ and finished 7th overall (class win) against Ferraris, Lambos, Porsches ..whatever else in GT.

 

[Grant 302]

Thanks, Rob. I just thought the Multimatic/spherical upper wasn't one of those specified parts.

 

[ajaquilante]

The Multimatic 3rd link came on the Boss 302R standard. In the CTSC rules it used to be you could run any bushings as long as it wasn't a spherical, unless it was approved part. You could always run a OEM part.

 

[Grant 302]

Thanks, AJ. So that's what you used with the OEM rubber on the axle side for CTSC? Same for PWC?

Anyway, that's one reason why I've stuck with small rubber bushings in the trailing arms (Eibach) instead of heim joints. First for compliance with street use, and I figured if the 302R didn't use them that *I* certainly didn't need to.

 

[ajaquilante]

OEM 3rd link, oem bushing in the axle. Both PWC/CTSC. On the trailing arms, we used the poly bushing arms (M-5649-R1) in CTSC and the sphericals (m-5649-S) in PWC.

 

[Grant 302]

Crystal clear now, thanks!

 

[TA28]

rehagen had stock bushing in the 3rd link axle only the link it self has McLaren tag and the bushing on chassis side is a massive polymer I think ford motorsport.
when did the boss 302s change over there lca to spherical joints.
I do understand the imsa on other rules didn't allow spherical joints/bushing if not built that way,but I am under no rules .

great thread by the way. thanks chris

 

[Grant 302]

when did the boss 302s change over there lca to spherical joints

My understanding is it was all of them (302S)

EDIT:
By that I mean 302'S' for all model years 2012 to 2014 with the spherical LCA vs. 302R since 2010 with the poly LCA.

 

[blacksheep-1]

You know Phoenix, always keeping things a secret..lol. The fact is, it's tough o beat hard work and good drivers, and I've never seen anyone so open to competitors and enthusiasts as the Aqualantes, they'll help anyone.