2022 Twin to STR

[DocWalt]

This is relevant because reasons:


Needed more rear camber! Rear lower control arms from the first gen aren't legal on the new car due to a change in motion ratio, makes this mildly annoying but oh well. The only other options are a $650 set of upper control arms or a $130 set of offset upper arm bushings that are a huge PITA to install and adjust as well as being easy to have them slip...

I'm giving a $25 option a try I got ~0.3 degrees more rear camber (one side gained like 0.5 degrees, so I just evened it out) using two MOOG K90473 camber bolts. They torque to about the same torque spec as the OEM bolts so I'm hoping they don't slip. I'll find out soon!





Alignment before:



Alignment after:

[Breezio]

Maybe I'm on the outskirts... but that doesn't seem like a good idea to me. The place that bolt is meant for is under very different stresses.

[DocWalt]

Originally Posted by Breezio

Maybe I'm on the outskirts... but that doesn't seem like a good idea to me. The place that bolt is meant for is under very different stresses.

I'll be keeping an eye on it, but other folks have had good success: https://www.ft86club.com/forums/showthread.php?t=33415

[DocWalt]

Did NNJR event 3 today, got the car working well finally (hey guess what, setting the shocks to where Shaftworks told me to set them works well) and Evan Schickel, 2018 DSP national champion, codrove to get ready for the NJ ProSolo


My fastest, good for 2nd in PAX, very close to Jeff Hurst (2013 STX national champion) in an STR ND:

Evan's fastest scratch time:

and a wild side by side!

[steverife]

I'm bummed that I didn't get to watch any of these at Charlotte. I watched some of the DS cars, but I found them to appear not relevant to my interests.

[DocWalt]

Originally Posted by steverife

I'm bummed that I didn't get to watch any of these at Charlotte. I watched some of the DS cars, but I found them to appear not relevant to my interests.

I've yet to drive one in DS trim, but in STR it's a TON of fun. Seems to be at least reasonably competitive with the ND, though definitely lacking. A tune will help, but I think it would need to gain 25whp to be super relevant in STR at the top. Definitely good enough to trophy with at nats though as it is, based on the performance of our STR Twin guys locally.

[steverife]

Originally Posted by DocWalt

I've yet to drive one in DS trim, but in STR it's a TON of fun. Seems to be at least reasonably competitive with the ND, though definitely lacking. A tune will help, but I think it would need to gain 25whp to be super relevant in STR at the top. Definitely good enough to trophy with at nats though as it is, based on the performance of our STR Twin guys locally.

Even if the tune doesn't get you 25whp, the Mazda people will assure you that it is there and just hiding from your particular dyno.

[Eric1855]

Originally Posted by steverife

Even if the tune doesn't get you 25whp, the Mazda people will assure you that it is there and just hiding from your particular dyno.

LOL...this

Totally anecdotal but launching next to a STR GR86 at practice starts in Charlotte, a STR 86 and a DSP 1st Gen get to the 120' mark at pretty much the same time.

[Simmons]

Originally Posted by Eric1855

LOL...this

Totally anecdotal but launching next to a STR GR86 at practice starts in Charlotte, a STR 86 and a DSP 1st Gen get to the 120' mark at pretty much the same time.

At Zmax pro I was getting 2.1 60ft and 4.6 to 200ft.

[DocWalt]

Originally Posted by steverife

Even if the tune doesn't get you 25whp, the Mazda people will assure you that it is there and just hiding from your particular dyno.

LOL. Like some RX-8 folks...

[foshjowler]

Originally Posted by DocWalt

I've yet to drive one in DS trim, but in STR it's a TON of fun. Seems to be at least reasonably competitive with the ND, though definitely lacking. A tune will help, but I think it would need to gain 25whp to be super relevant in STR at the top. Definitely good enough to trophy with at nats though as it is, based on the performance of our STR Twin guys locally.

I'd be surprised if any of the new twins get a trophy in STR this year at nats. Watching them at Charlotte, it was quite clear the ND2 has a significant upper hand. In DS trim, it seems to be up in the air and course dependent as to if the twins or Type R is faster. In Charlotte, there were 3 of us before the first Type R.

[Locust]

Originally Posted by foshjowler

I'd be surprised if any of the new twins get a trophy in STR this year at nats. Watching them at Charlotte, it was quite clear the ND2 has a significant upper hand. In DS trim, it seems to be up in the air and course dependent as to if the twins or Type R is faster. In Charlotte, there were 3 of us before the first Type R.

Watching at Crow's I can't see any way they will compete in STR at Nats. Those courses were fast and flowing if they can't excel there over the ND they're not going to at slightly tighter courses.

[racingfool]

Hard to make up for 400+ lbs.

[DocWalt]

Originally Posted by foshjowler

I'd be surprised if any of the new twins get a trophy in STR this year at nats. Watching them at Charlotte, it was quite clear the ND2 has a significant upper hand. In DS trim, it seems to be up in the air and course dependent as to if the twins or Type R is faster. In Charlotte, there were 3 of us before the first Type R.

After NJ Pro... I still disagree with you. New twin can trophy in STR.

Did I execute it well enough? No. Will it be a lot of the same folks running STR at nats that beat us in the twins? Yes... Just with more people so there are more trophies.

So I think it will be easy for a twin to trophy in STR? Hell no. Do I think the ND should probably have its own class and put STR back to how it was before 2016 just with the new twins added? Hell yes.