Bilstein B6 + TRD Rally springs + Pedders top mounts

[Racecomp Engineering]

Originally Posted by norcalpb

What are your thoughts on relocating that trailing arm pickup point from the subframe to the chassis?

Seems like it would be a good thing.

- Andrew

[Racecomp Engineering]

Update: I took these off for the summer.

Overall, these were fun but I was hoping for a bit more from the set up. The spring rates are too firm for rally, and I think that coupled with the long and firm OEM bumpstops (especially the rear) just wasn't a good combination. Firm springs + long and firm bumpstops doesn't work too well. There's potential for a fun set up here, but they just need some work to get the most out of them.

I talked about the rear bumpstops earlier and the replacements were an improvement. I'd still consider shortening them a smidge more and I should have done something with the fronts too. Can't find many easy options for the internal fronts so I'd have to do something creative on my own.

Also, like I mentioned before, I think the lift makes something like the MCA traction mod more helpful and maybe even necessary. I do think that would improve the ride.

In terms of handling, it's plenty good for a spring on OEM style damper set up. Yes, I did eventually run them with my summer set of Michelin Pilot Sport 4s and honestly it crossed my mind to do something like lowering top mounts or lowering rear LCAs to get the ride height down and make this a "sport" set up but that's a lot of work. I'd still want the bumpstop mods and MCA traction mod.

And...the handling AND ride quality is better on my current set of coilovers with slightly stiffer 5k/6k rates and a 30mm drop from stock. Total travel is roughly the same too, with plenty more bump travel before hitting bumpstops on the coilovers and I think more overall bump travel too. So that makes that a bit of an easy decision.

Finally, the lift turned out to be about +5mm in front and +13mm in the rear. Still looks okay, but I was hoping the front would come up a bit more. I might put these on again in the winter but we'll see.

- Andrew

[Racecomp Engineering]

For a look inside Bilsteins:

- Andrew

[Ultramaroon]

lol

Good stuff too!

[bhmax]

Thanks for the info. Just ordered these springs to pair up with my Bilsteins that have been sitting around since I put Racecomp coilovers on. What issues might there be having +10mm when there’s already roll center correction ball joints and end links on the car?

[Racecomp Engineering]

Originally Posted by bhmax

Thanks for the info. Just ordered these springs to pair up with my Bilsteins that have been sitting around since I put Racecomp coilovers on. What issues might there be having +10mm when there’s already roll center correction ball joints and end links on the car?

I'd reset the endlink lengths (or better yet just get a new set of OEMs for cheap to use with this set up). Wouldn't worry too much about the roll center kit.

- Andrew

[bhmax]

Just removed my coilovers I’ve been running the last 4 years. Just mounted the TRD springs, some used Bilstein B6, and Verus camber plates. Can’t run camber bolts due to wider wheels, so front camber was maxed out at -2.1 and -2.3. Curious to see how I’ll like these. Was mostly just bored and wanted to try out a rally look. Headed to a track day on a kart track this weekend. Will be interesting to see if the higher CG affects it enough to make me want to go back to coilovers at some point.

[bhmax]

So being maybe 35mm higher didn’t seem to slow me down, although an OS Giken LSD was added at the same time. Personal PB and fast time of the day at my local kart track. I’ll be doing an extended Smokies drive next month which will tell me if I keep this setup for a while. Mud flaps going on soon to complete the rally look.