Ecotec le5 Turbo 2.4 Build (Page 9/28)
dobey OCT 29, 05:10 PM
RX7 is a nice car, but they aren't built to go that fast either.
4thfiero OCT 29, 05:24 PM
Not stock no, but they did build one that could...i have a pic of it somewhere, they didnt stretch the frame or anything...suspension..aero...and probably some other stuff i dont know. I think they even had a youtube vid of the driver doing it, everything was great but the fuel warning light came on, it needed a better fuel pump. But they did it!
jediperk OCT 29, 05:51 PM
I think the RX7 had a longer wheelbase than the fiero so it was probably ok. Fiero's have really short wheelbases compared to most cars. It's great for corning, but not so much for high speed stability.
4thfiero OCT 29, 06:08 PM
your right, but i also know of a nissan s40z that could go 250 kph, shorter wheel base than the Fiero!
dobey OCT 29, 07:52 PM

quote
Originally posted by 4thfiero:

Not stock no, but they did build one that could...i have a pic of it somewhere, they didnt stretch the frame or anything...suspension..aero...and probably some other stuff i dont know. I think they even had a youtube vid of the driver doing it, everything was great but the fuel warning light came on, it needed a better fuel pump. But they did it!



But it's also not a Fiero. They are very different cars. Modelling the mods you wish to do to the Fiero off an RX7 isn't going to get you the same results. The RX7 has an advantage with the rotary, that can be built up to run over 10K RPM.

Here's the only video of an RX7 going 200 MPH I've found, that wasn't a purpose built 7 second drag car:


I guess it did go 200 MPH. Once. Needed better aero.
jediperk OCT 29, 09:09 PM
Great vid to illustrate exactly what we have been saying...
4thfiero OCT 29, 10:26 PM
The RX7 im talking about had an orange paint job, like ghost flames, and it had a V8 in her, not a rotary...cool vid though

ANYWAYS, i wanna see how far i can push the Fiero, then mod it, then push it, then mod it...anyone know how fast (in top speed) the fastest Fiero has gone that wasnt a IMSA car or something.
dobey OCT 30, 09:32 AM
Well, I can tell you that your front end mods are all wrong, for building an aerodynamically stable Fiero at 100+ MPH. The hood vent is in the wrong location, as already pointed out, the openings are too large, and the angles are a bit odd. It looks to me like you're trying to hard to make it look like a second gen RX-7.

There's a couple of Fieros that run high 9s and low 10s quarter mile times. Those are the "fasest" Fieros I know of. And they are making like 800+ HP at the wheels.

Also, if you want to go that fast, then dished wheels are a bad idea. You want smooth wheels like all the Boneville land speed cars have. Dished wheels with spokes are a great way for air to get sucked in and create lift.
BillS OCT 30, 11:01 AM
Top speed runs are pretty academic as few can undertake them, but yeah, generally low, not too wide and with a decent wheelbase is suitable.

As for handling power with a short wheelbase, the Fiero is 93.4". A car I raced for years (early TVR) had an 85.5" wheelbase and gandled very well, as well as being able to take a lot of power (small block Ford V8). Granted, it didn't have a high polar inertia (which is good for turning on the track), but it was fine up to around 130 mph (maximum on a closed track) and higher if you had the road to do it.

To the OP - that engine looks very at home in there, doesn't it? Maybe you'll start a trend and a home for Ecotecs coming out of written off later cars!

I wouldn't put too much effort into top speed records though - not sure the Fiero is designed for it aerodynamically. I had my turbo 88 to 130 mph briefly, long enough to note some distressing aerodynamic tendencies. BTW, until it was a few years old and the headlight pods had built up enough crud to stay down, they would pop open at around 110.
4thfiero OCT 30, 01:57 PM
Like i said, i'll be slowly seeing how fast i can get her up too, my headlights dont pop up at fast speeds bcc of my hood vent, it releases the air pressure under the hood so they dont pop.

Thanks for the info though guys