ringmaster72

iTrader: (8)

I found a Street Twin for a good price, but it has the Aluminum flywheel. I have heard in the past, that aluminum flywheels make street driving more difficult. Does anybody have experience with the street twin with aluminum flywheel?

SS RRR

iTrader: (2)

If the flywheel that comes with it has been used with the clutch then IMO I don't think it would be a good idea to change out a flywheel that has already been seated to that clutch. My brother-in-law works on 3.8L Super Coupes extensively and has said he hasn't really seen an issue with either street use or 60' times at the track using an aluminum flywheel, and those cars are heavier than a 4th gen. With as much torque as you make I wouldn't sweat it. Hopefully both clutch and flywheel surfaces are in good condition.

ringmaster72

iTrader: (8)

It is all brand new, I just did not want to shell out the money and make my car miserable on the street. I planned on buying a new with a steel flywheel but then found this one for a few hundred dollars cheaper than the steel one.

JasonShort

iTrader: (242)

I've had probably 6 different Street Twin setups in my cars over the years. Both aluminum and steel flywheel versions.

If you want my honest opinion, I prefer the steel flywheel ST over the aluminum one for both street and track driving.

BALLSS

post 4 has more experience than I on using both and seems to answer your ? .

FWIW I chose, and glad I did, steel for my twin (BTW one great clutch)

I think if auto x was the primary use intent than the aluminum would be better but for street and especially 1/4 mi, steel IMHO

AdsoYo

iTrader: (1)

I'm using a Fidanza flywheel with a Street Pro and it feels great.

SS RRR

iTrader: (2)

I inquired into this a little more with my brother-in-law and he stated the best 60' he has witnessed from a SC was a 1.59 with a 3700lb race weight. However he does say it will be different with the SC because of the rotational mass of a roots blower will help reduce inertia, so yeah it's probably best to stick with a steel flywheel if you are into drag racing. And to help make it sound like the village troll isn't referencing "Clyde from down by the river..." This is his business:

https://www.facebook.com/pages/Super...07270676099734

ringmaster72

iTrader: (8)

Yeah, I guess I better stick with the steel flywheel. It will actually cost me a couple hundred dollars more than this aluminum flywheel kit but oh well. What is another couple hundred dollars in this game lol.

guppymech

iTrader: (7)

A street twin weighs more than a stock clutch Assy. I have a stock type clutch with a billet steel FW that weighs 4 lbs more than the stock one. The engine runs smoother at a lower rpm than with the stock FW and the engine acts like it has more torque at the track. I say this because even the twin with a aluminum FW will be heavier and have these characteristics. How much more does a steel FW add to the total?

ringmaster72

iTrader: (8)

I was thinking along those lines as well, that is why I was hoping to hear from someone that had an aluminum flywheel in a street twin. I thought the extra disk and the extra plate for the other disc might add enough weight to outweigh the weight savings form the aluminum flywheel.

It seems to me that the street twin with an aluminum flywheel would be still be close to the same as a single disc with a steel flywheel.