Okay, I mentioned this to Davis, but figured I would start a thread on it to iron out a few myths. Ricers love light stuff, an aluminum flywheel is the one of those light things(probably because they have NO torque, you will understand in a minute) I have always been told (old school, V8, RWD kinda types) that if you have torque, that a heavy flywheel is better for you than a light one. A few reasons being that 1) a light flywheel will get you to spin faster, but w/ a torque machine you don't really want that. 2) A heavier one will assist up top when you finally DO get all that weight spinning. From the dyno #'s I have heard about/expect from my car, I would think that a lighter flywheel/flexplate is not needed. From a boost standpoint, we SURELY don't need it. Unassisted, the T25 will reach max boost at like 1200 RPM. If I had a T4, then I might be worried about how fast I can get to 5000, but w/ this straw, err... T25, I'm not. Okay, discuss. There's the gist of my argument, lets see what you guys come up w/.
There is no way you can compete aginst lighter spinning mass. Wheather it be tires, flywheel, driveshaft, pistone Etc. Plus the fact that alum flywheels don't explode as eaisly. and when they do which is unlikly you might be lucky and not tear you and your car in half. Remember you are sitting right behind it. You couldn't pay me, and there aren't enough people on this fourm to force me to get behind a steel flywheel. Believe me I know. Go Alum.
I would guess that If NHRA tech new you had a steel even 4130 flywheel they would either bar you from the track or require a scatter shield and block plate.
End of subject, don't be a fool.
Jud
It doesn't matter what your flywheel is made of, you still need a scattershield........
So youre saying everyone w/ a TGP should have to have an aluminum flywheel/flexplate? There are a WHOLE lot of cars faster than my TGP running around w/ steel. Besides, did I ever say that the thing was IHRA or NHRA approved? I'm sure the NHRA would rather have an OEM steel flywheel than an aluminum one some random ass dude made. Or do they just trust everyone? Christ, get defensive why don't cha :lol: Actin' like yer kids are riding w/ me, sheesh.
If what you say is the case, tehn niether my Supra nore my '96 Cobra would have benefited from the aluminum flywheels. Now, I can say I did have dyno sheets from both cars(the Supra being a big single conversion, 94 with a 6 speed, and the Cobra being a DOHC 4.6 V-8 with a Vortech Supercharger). Dyno numbers showed nearly the same, but it did allow both cars to rev quicker, allowing it to get through it's power band faster, also alowing the car to move quicker. While there were small gains from it, there were gains on both a torque monster(the Cobra) and a high revving import(the Supra).
Edit: I thought I would also add the TGP engine would fall more under being an import/sport compact motor because they do develop their torque at higher RPMs, and do act like typical V-6's. So an aluminum flywheel, if the car was a stick, would be a good idea. If it's aut, it's a moot point, because the TC will soak up any gain anyhow.
See, good stuff, that's why I started this thread, not too get yelled at. :lol: We've already got dyno proof that I was TOLD wrong. See, I knew you guys would give me a good reason to buy an aluminum flywheel and U/D pulley.
Excellent.............. :D
Im glad i made the proper choice.....
SPEC Stage III With Aluminum Flywheel
Quote from: god910See, good stuff, that's why I started this thread, not too get yelled at. :lol: We've already got dyno proof that I was TOLD wrong. See, I knew you guys would give me a good reason to buy an aluminum flywheel and U/D pulley.
Another point of interest on the UD pulley is that people on the 60* board were saying it(the FFP pulley) doesn't have a damper on it and that it's just a pulley and could cause problems(possibly later on in the engines life) by not dampening vibrations in the motor. I've also read in my engine rebuilding class for school that a defective vibration damper can result in cracks near the number one piston connecting rod journal on the crank due to excessive torsional vibrations. Just another thing to think about.....
EDIT: I also remember reading that an "improper flywheel" could cause the same cracking near the number one rod journal...there were a few other thing that can do this as well..but I'm forgetting what those were at the moment :oops:
what kind of fly wheels do the tgp's run any how?
brands, links, info
Our pulleys aren't dampeners anyhow are they? I don't think they are but I haven't looked closely. Future, TGP's don't run flywheels they have flexplates. My TGP has a stock paper plate out of a Lumina, or whatever this tranny came out of. I will be getting a SPEC aluminum one though, and a little stouter clutch than Davis :P
jay they are dampers.
QuoteI thought I would also add the TGP engine would fall more under being an import/sport compact motor because they do develop their torque at higher RPMs,
I would believe that is wrong! try max torque at 2100 rpm!(according to v6z24 specs on the tgp motor)
Lighter flywheels = quicker revs up and down
Heavier flywheels = slower revs and a little smoother torque curve
Auto tranny flex-plate is light as it is and with an aluminum one in place I doubt you would see much improvement. Now the 5-speed guys would see a huge difference with a lightened flywheel as the stock GP 2.8 flywheel (what is on Luke's car) was 32 LBS IIRC. Lighten that rotating mass and wammo the power is here....NOW!!! :shock:
Quote from: z24turbo93jay they are dampers.
QuoteI thought I would also add the TGP engine would fall more under being an import/sport compact motor because they do develop their torque at higher RPMs,
I would believe that is wrong! try max torque at 2100 rpm!(according to v6z24 specs on the tgp motor)
My V-6 Stealth TT hit max torque at 2300RPM, and my Supra at about 3100. Considering the TGP isnt meant to rev as high as those engines(nore is it engineered HALF as good), it would put it in the same class.. This is NOT a V-8, nore is it even a large displacement 6cylinder. It's just as much of a sport compact engine as any otehr car in its class. To be honest, the TGP engine is no more than ancient technology spiced up with a turbo. If you dont think it was GM's attempt to take a bite out of the small displacement tuning world, you're as ignorant as that post of yours sounded.
Not trying to badmouth the TGP per se'. just prove a point. I love my car, and love to work on it.
Quote from: futuretgp'erwhat kind of fly wheels do the tgp's run any how?
brands, links, info
The TGP doesnt have a flywheel at all. They were all automatics, so they are equiped with flexplates. The people that do the 5-speed swaps usually use stock GM flywheels from the donor cars they get the transmissions from.
My flywheel weighed in at around 18 or so lbs. I do have a getrag 284, but I think that 282s and 284s use the same flywheel. I could be wrong though. :P