gergrx7

hey guys im going to be in the market for a lightweight flywheel soon. i was wondering what is better to use for daily driver/drag/autox. how much harder is it to take off with 9lb and 12lb. does the 9lb accelerator alot quicker or just a tad difference?

BTW i am looking at the ACT ones from rx7store.net

j200pruf

iTrader: (4)

I can say that I love my RB 9lb Aluminum Flywheel. I have had no problem with starting off, and most of my driving have been fairly steep hills. Definatly worth the money that I spent.

fastrotaries

between the 12 and the 9 it's no big deal. It'll take you a few tries to get used to it, but once you do. You really won't notice the difference.

SwooshMan

the act is 13.9lb btw. thats what act says anyways

http://www.advancedclutch.com/Produc...&idproduct=709

gergrx7

i was actually looking at the ones on rx7store.net

and its 9.5lb and 12.5lb and the 9.5lb is $250 and 12.5lb is $225

12.5lb http://www.rx7store.net/index.asp?Pa...rodID=824&HS=1

9.5lb http://www.rx7store.net/index.asp?Pa...ROD&ProdID=800

SwooshMan

rx-7 store is a typo

Mr. Gadget

does anyone run the 12-13 lb steel flywheel?

1987RX7guy

iTrader: (3)

your probably quoting the weight WITH the counter weight.

SwooshMan

No, i'll go weigh it tommorrow. Look the ACT website. The s4 & s5's have different weight counterweights so that makes no sense. Here is a quote from corksports website and its the standard ad for the act Flywheels

"Most stock flywheels are heavy cast iron parts designed for optimum street driveability by soaking up some of the power from the engine and putting it in storage in the form of inertia. Although this may be important for transporting the groceries, this driveability comes at the expense of engine response and acceleration. Light weight flywheels keep less inertia in storage but the lighter rotating mass provides significantly improved engine response and acceleration characteristics. Until now most aftermarket flywheels for sport compact vehicles presented certain undesirable concessions to the user. Many are too light or fragile for the application, others have reliability issues and all are very expensive. Finally, ACT offers eXACTly what performance enthusiasts need: all the benefits of a premium quality light weight flywheel at an affordable price. ACT currently manufactures XACT flywheels in two versions, ProLite for road racing applications and very quick throttle response, and slightly heavier StreetLite for street and drag racing vehicles which may require more inertia. For example, the Integra ProLite weighs 8.8lbs and the Integra StreetLite weighs 12.5lbs. Both ProLite and StreetLite flywheels are precision made from Chrome-moly forgings and feature an induction hardened integral ring gear. All ProLite and StreetLite flywheels are CNC machined, heat treated for strength and precision balanced. Substantial material is left behind the clutch surface area for better heat dissipation and durability while weight savings is made where it matters the most for reduced inertia. XACT flywheels are certified by ACT to meet SFI Spec. 1.1. This makes XACT Flywheels legal for competition when SFI Spec. 1.1 is required or recommended. XACT flywheels come complete with official SFI sticker and serial number as required for certification. Consult the following chart for available applications. Some may still be in development at the time of this printing. Numerous applications not listed are scheduled for release next year."

I bet rx-7 store just used the number from the ad they recieved from ACT. But like i said i physically have one and its not in my car at the moment so i'll weight it tommorrow.

SwooshMan

None of this really matters, sorry. I loved it when i had it in the car for the 5 days it ran. I also had the 6 puck unsprung act clutch with the act hd pp. nowhere near as hard as everyone claims to drive. It revs very quick and not hard to start really.

gergrx7

yea i think im gonna go with teh 12.5lb or whatever it is from rx7store.

jhillyer

http://www.nipponpower.com/drivetrain/flywheel/act.html

clubber

I love my 12 lb. flywheel and accoarding to the scale in the bathroom, it's 12 lb. with the counterweight.

lnlycrpr

is the counterweght needed or can you use the stock one?? i dunno so i'm asking

gergrx7

you have to use the counterweight from and automatic. becuase on 5speeds the counterweight is built in the flywheel.