Drag Racing Tech - What alum flywheel worth in ET & MPH?




soslo
05-17-2004, 01:03 PM
On a Heads/Cam car?

Will it help the 60 ft?


Coach 02 A3 Z/28
05-17-2004, 01:09 PM
From everything that I have read on this site you do not want a alum flywheel on a drag car. :nod:

Just stay with the steel flywheel. ;)

Coach

SilverGhost
05-17-2004, 01:59 PM
I believe 01-Z was running one before with his mcloed setup, but i was always kinda confused how that held up to what he was throwing at it.

i would not do an aluminum flywheel for drag racing, you will make a little more power but I'd have concerns about strength


soslo
05-17-2004, 02:10 PM
So strength may be a concern? Has anyone here had a problem?

Please excuse my ignorance...if an alum flywheel will help the engine rev faster, then the car will go faster. Kinda like why the diesels aren't super fast even though they make great power...the just don't rev fast enough...

I'm not trying to defend the alum flywheel here - just find out the facts.

This was an interesting read:
http://vca2.viperclub.org/forums/showflat.php?Cat=&Board=UBB2&Number=374223&page=0&view=collapsed&sb=5&o=&fpart=1

ONEBADWS6
05-17-2004, 02:39 PM
Do not get the aluminum flywheel, durability was not a problem, as I had 550rwhp and it was fine, the 60ft were a pain and the car bogged out of the hole under 6k. 01-Z came out at 6500 to avoid the bogging problem.

soslo
05-17-2004, 02:48 PM
Do not get the aluminum flywheel, durability was not a problem, as I had 550rwhp and it was fine, the 60ft were a pain and the car bogged out of the hole under 6k. 01-Z came out at 6500 to avoid the bogging problem.

Wow - crazy. I'm assuming you had slicks. Did you swap in a steel flywheel and go faster?

EDIT: The reason I am pounding this issue is because I have a brand new Fidanza sitting here, to go along with my new SPEC 3 X pad and line lock...
The TSP guys didn't seem worried about it, but I didn't ask the detailed questions because I didn't think it was a big issue. Oops.

I've always thought the LS1 seemed a little "lazy" in the REV department...and want to speed that up, but not if it kills my driveability. I can see this issue on a low-power car, but 300 ft lbs at 2000 RPMs...I guess I just assumed the engine wouldn't need to "store" that much energy to scoot off the line.

Please keep the comments coming...I need the details/truth/etc - even if I don't want to hear it...

Bob Cosby
05-17-2004, 08:02 PM
I have had an aluminum flywheel for almost 2 years now and would never even THINK of going back to steel. On slicks, my 60 ft times were just as good as they were with the steel flywheel. Additioally, many, many drag racers in the NMRA (National Mustang Racers Association) use em - up to and including Real Street cars (that are running high 9's @ 3250 lbs - Robin Lawrence uses one and holds the record at 9.69).

It is no problem at all on the street - and that is with a relatively torqueless DOHC motor.

Highly recommend them - for a drag car or any other car.

02SOMWS6
05-17-2004, 08:33 PM
you need the weight of the steel clutch to get you off the line.Unless you launch at 6400 rpm you will bogg.If you don't go to the track a lot you will be fine on the street.