mazdaspeedwest

Are you reffereing to the V8 or V6 that you had the trouble with?

i can say, that a 94-98 (not totally sure on the years) non-GT Mustang cannot keep up on the frwy. From 4th to 5th i had him and was slowly pulling away at about 110mph (maybe a speed gov, i dunno) once i hit about 130mph i was far enough ahead to say i WIN! This was not a fluke, as he tried again. Braden, who has a turbo Pro, ate us both, and can back me up on this.

Off the line, i'm sure i'd lose to a V6 Mustang, by how much, i have no idea, but i'd lose.

mazdaspeedwest

hehehe, it was more in the context of muff slayin....but please don't ask me to explain, as here is not the place for it

Silock

I only have trouble with the V8s. Sometimes I win, sometimes I lose. It depends on their mods, though. V6s are a pretty even match with my Miata, so it all depends on the launch, pretty much.

eeterp

Sorry this is off topic but, I've finally found someone with a TypeR! Ok, do you know anyone who has put a turbo on a typeR without putting in lower compression pistions?

The reason I ask is because the mazda fs-ze engine runs 10.5:1 compression and I know the typeR runs 10.6:1 compression. So, I figure if someone can turbo a typeR without lower compression pistons I don't see why I can't do the same to the fs-ze.

This may apply to Si's as well because they run 10.2:1 compression.

mazdaspeedwest

thats pretty impressive. are you running stock?

Silock

Yes, you CAN, but it's not advised. The B18C5 (ITR engine code) is designed as an N/A engine, and works much better with cams and ecu and even higher compression.

You could do it, but only run 3-4 lbs of boost, and get okay gains, but it's much better to do lower compression pistons.

mazdaspeedwest -- No, I'm not. I have a cold air intake, JUN header and full exhaust, no cat, JUN ECU, JUN ultralight flywheel, Exedy clutch, Apex'i VAFC, Energy Suspension motor mounts, 15" Volk Racing wheels and Skunk2 coilovers. I think that's it for go fast parts . . . I could be wrong though. There's a lot.

It's for sale if you want it

mazdaspeedwest

Nice list of goodies...

Silock

I'm still running stock shocks. I don't have the car lowered enough to warrant a change. The stock ones do fairly well. When they go, I imagine I'd just get a set of Tein HAs or something similar. The tires I have are Bridgestone Potenza RE-730s. I used to have Yokohama Paradas, but they just don't grip at all like the Potenzas. I highly recommend them. I have had them on auto-x and super speedway conditions and they don't slip hardly at all (at least, as much as street tires go).

I don't anything at all about Mark Allen's R, but I imagine he wouldn't have the bottom rebuilt. I have a few friends that have the JRSC, but they didn't find a need to build up the block. Even with the 8lb pulley, the bottom end is more than able to take it. The problem comes in tuning out the overlap in the cams, because they are fairly high lift and duration for a stock system. Especially compared to a GSR, which responds much more easily and beautifully to the JRSC system. If you can get it tuned right, though, it's more than capable.

mazdaspeedwest -- Thanks

eeterp

Thanks for the info! You didn't exactly tell me what I wanted to hear, though The only lower compression pistons available are the stock pistons, which defeats the point of my engine swap.

I looked at clubsi.com and they had great info on a turbo setup. How much do you think a metal headgasket would help? Basically, I want to SAFELY run 6-8 psi.

Well, if all else fails, I'll just get the mazdaspeed pistons 10.7:1 and the exhaust cam. At least I'll save some $$$ that way.

thanks again

Silock

Well, you could get a really thick head gasket, which would be cheaper, but I don't know many people that go this route without just doing low compression pistons. You could run the higher compression and run high boost, but you have to REALLY REALLY tune it.