I think a 255/245 tire on a 9.5" wheel will be quicker than a 275. You will also have more contact patch (yes I know this sounds backwards) on the ground with a 245/255 tire than a 275 and it will be a lot better handling. Of course this is just speculation.

Some of the racing tires do have stiffer sidewalls, which might make things better or worse, not exactly sure, but if you look at the time attack cars, specifically the cyberevo, they are definitely stretching an A050 tire on that wheel, its stretched pretty good, and if you watch the videos of that car screaming through corners you can see how well it handles and is controlled.

Fritz

When you fill up your diff and Trany with new fluid do you also fill up the coolers before you connect up your lines?
Do you rely on the oil moving around the transmission and diff and that's what goes in the cooler and out to both the Trany and the diff or do you have pumps?
Did you make new holes and added fittings to connect up the lines to the coolers?

You want to put a big wing out back, but wouldn't you get to the point were your nose is lifting and you start loosing on the handling? Or will you increase your spring rate?

Thanks!

I originally wanted to combine a cooler for both diff and trans but all the race guys I've talked to said that's a bad idea because if I loose one you will loose both but also I think the shear/metal shaving that come off the diff are larger and could mess up the trans syncros or maybe it's the other way around but the bottom line is you don't want to mix them together. Also probably a good idea to run two different kinds of fluid.

The feed for the trans is the fill hole so you simply run a line from the drain hole to the pump and the cooler and then have it feed into the fill hole.

You fill by topping it off like usual then putting the line back on and running the pump for a bit then top off again.

I'm not thinking about a crazy airplane wing but a larger one than the MS GTC. As mentioned you don't want the wing to cause push, which is the devil. Currently it's an over steer machine even through the faster corners so a somewhat larger wing I'm hoping will help.

I've been talking about a wing for a while so don't expect that to happen anytime soon.

Once it's back from piper I'll run an event or two to see how it's doing and then if everything is solid I'll buy some fresh c71s, pull some weight and do a TT with NASA.

Please do! I'm curious if it's modified like the one I did several years back. It was heavier but solid as a tank. :)

Yeah it's a wee bit HEAVIER but I'm pretty sure it comes with a lifetime guarantee LOL

I found an old pic of mine. I was told by a fellow forum member "nice boat anchor". Lol! To this day, it was one of the best mods I ever did to my fd when it was stock.

Attachment 534229

I'm intrigued, whats the benefits besides not cracking the stock ppf to beefing up the ppf? Any NVH side effects?

Jason

NVH was not increased with the mod as I'm happy to say. Not to hi jack this thread but, here's some info on my build thread several years back. Unfortunatley, the pics are no longer showing. :(

https://www.rx7club.com/3rd-generation-specific-1993-2002-16/check-out-my-reinforced-ppf-527280/

right on, thanks!

Jason

Great motivational videos, congrats and thanks Fritz.

255 is not stretched at all on a 9.5 , a 245 is a bit stretched

and really it has alot more to do then width , tire pressures play a huge role

say a 255 at 35 psi , will have the same sidewall stiffness then 245 @ 30 <-- this is just to give an example . same can be said for 275's run enough psi so that when you turn it uses all of the tire .

as for the cyberevo , we would need to look at alot more data .

And like I said running some stretch is good . but I doubt they are running anything but the MAX width on a tire that they are allowed , and the wheel itself is a bit wider in order to achieve that stretch . They dont downgrade to a thinner tire then they are allowed because the wheel is not wide enough .

alot more information would need to be elaborated like what size tires / wheels they run

and what the allowable tires / wheels are for the class .

Also clearance issues would a bigger tire cause it to rub .

Nice tire info. I was on tirerack checking out my own setup. I have a staggered set up because of my Pettit flares. The front wheels are 18x9.5. The rear are 19x11. The recommended wheel width range for a 235-40-18 is 8-9.5" so i m good there. The rear has 295-30-19 and, its recommended range is 10-11" so I'm good there also. I personally go with the wider wheel on my setup because I like a slight stretch.

LOL....I'll take the boat anchor over trying to track down that run away shift knob when the PPF cracks along w/ the thump in the back etc....

Thanks for checking it out :icon_tup:

You ever get around to installing those zeal coilovers on the track car? Insane how light they are.

LOL

Thanks for reminding me, I actually sent them to Zeal/endless for a rebuilt and still haven't heard from them.

YES, crazy light :nod:

I've heard NOTHING but great things about Zeal, and you should for the price lol. I'm willing to bet you'll drop a couple tenths once you get those dialed in.

I am going to stick with the super r setup on my track car, I really like them and I am currently trying to replace those with a new set and have the old ones rebuilt.

The zeals will go on the back up track car.