ahhh the good old days

 

5" really, if you want to clear it with little spacer.

 

5" is pretty short for the front. Thats roughly 2.5" max travel and even with 800lb front springs I use a bit more than that. Rear 5" is fine because typically higher NF and lower MR.

 

I have 5" plus KW v3 helper springs (maybe as a 1.5" spacer). I havent raced with this set up tho

 

Is the helper spring at full expansion or do you have it squished somewhat?

 

on jack stands. (maximum camber from camber bolts). helper springs are squished to 33% shock travel

 

So many variables at play: Ride height, wheel/tire combos, camber settings, coilover design, etc. are all coming into play here.

On the front, I'm running arguably the widest wheel/tire combo you can fit on a stock fender/body evo. 18x11" +15 / 295 A052 and I haven't had any issues with the 6" spring on my old JRZ's or Ohlins. I have a set of Shaftworks dampers on the way so we'll see if this fits the mold as well!

 

Looking forward to seeing how you like the shaftworks. Did you get doubles or singles? The fronts are non-inverted correct?

 

Dallas, I ended up going with his triples. I hope this is the last set of coilovers I'll buy for this chassis, ha! I would expect to receive these in the next week or two and my first event will be in late March in Lincoln for a test n tune and points event.

His fronts are indeed non-inverted. Jonathan is a wealth of knowledge - answered any and all questions in a very reasonable amount of time too.

 

From what Ive seen of his shock curves they look pretty good. Very penske like plot curves through the adjustment range. What rates did you go with?

 

Agreed that and I believe he mentioned he can almost mimic Penske's tuning control with these Shaftworks dampers without the extremely high Penske cost. He's in the realm of half of what a comparable set of Penske's would set a person back. I believe he mentioned for the CT9A, to build a set of Penske 2-ways would be in the $10,000 - $14,000.00 range. Triples would be even more.

For his doubles he uses the Penske 8300 canisters and for the triples the 8760 - however none of the internals are Penske parts from what I gathered. He is in the process of building/sourcing his own canisters in the future, but I'm unsure how far down the line that is.

I was thinking about just going the single route initially and then upgrading to doubles or triples down the road as that is an option too for anyone considering these!

I went with the 800lb Front and 1100lb Rear rates. I have a couple pairs of 1000/1200lb springs if need be for the rear. If I haven't mentioned already, I'm going to try a square setup again early on this year. If that doesn't work out the way I think it will, I can always fall back to the 295/255 combo and run less of a rate in the rear again.

 

Works well, no bottoming out on high curbs, 700 lbs front 900 rear. I attribute that also to the MCS valving. Rear has a 7" spring. Both have helpers. Without a spacer the 18x11 with 295 hoosier cleared but was a little close for comfort so I had a custom set of 8mm hubcentrics made and it lines up well.

 

Random, odd, Street Touring question that came up from a conversation with a friend who runs in STS.

Is it legal to run a wideband 02 sensor in Street Touring? My first thought was, "Well, why not? It's simply a gauge."

After looking at the rules, here's what I found:

Under Street rules:




Under Street Touring Rules:

 

If the WBO2 isn't connected to the ECU it wouldn't be being used for engine management, right? If you were to add an IAT for SD or something along those lines it would be an additional sensor being used for engine management.

 

Thanks for the clarification. I feel like I was over thinking this!