Looking at this streetlite flyweel I saw for sale on rx-7store.net

$225.00 for the flywheel.It's a 12.5 lb steel flywheel. It has a counterweight as an option, for $119.00, dont you need that bitch? Spendy little "add on".



http://www.rx-7store.net/index.asp?PageAct...ProdID=824&HS=1

Yes, you need it. If not that counterweight, then one from an automatic. Although their advertising is misleading. They claim their lightweight flywheel is "best for street and drag racing vehicles which may require more inertia". "Best" as in better than their 9 pound flywheel? OK, I agree with that. Drag racers typically want slightly heavier flywheels, not lighter. This is especially true for vehicles with little torque. The logic behind their advertising is flawed. If the owner wants to look like an NHRA poster car, they should leave the stock flywheel in place because it's heavier than both the 12.5 pounder and the 9.5 pounder - combined. A lightweight flywheel has advantages, but they did not mention them in the ad.



In case you're wondering, I've got a Racing Beat lightweight flywheel and i think it was a good upgrade. Their product may be good too, it's just the ad that's less than clear.

Did you get the steel or aluminum? My buddy has the steel and likes it. My engine is out so nows a good time to upgrade. This is for a 13BT.



-Marc

I got the steel one. Over the 13 years of owning this car I've tossed a fair amount of money on a lot of crap. I'm happy to say the lightweight flywheel was worth the money. https://www.nopistons.com/forums/pub...1047683329.gif



Does anyone have a 12 pound aluminum one? Is there one available that's lighter than 9 pounds?

I've sold several of them, heard no complaints. I would suggest purchasing from a more reputable vendor so you actually get the fucker, but it's worth the money. I would get the matching counterweight https://www.nopistons.com/forums/pub...DIR#>/wink.png

Thanks for the replies. The counterweight with an aftermarket flywheel wasnt knew to me, its incorportated in the stock flywheel right? I was just commenting on how it was kinda shitty to have it listed as an option. Like you dont "need" it. I mean who needs there engine balanced? haha https://www.nopistons.com/forums/pub...IR#>/smile.png



-Marc

Yea ACT is like that, if you call them and ask them about the counterweight they seem to think, or at least did last time I spoke with them that it's no necessary, I guess if you burned up another Xact flywheel you could use the old one.

i have a steel one on my fc, i love it. its the 1 part that hasnt changed at all since i bought the car

speaking of that wheres mine?

Yer shitting me, you never got that **********er?



Holy crap. I hope I can track it down now, bastards already charged me for it.



I honestly don't think I am going to carry ACT anymore, they are constantly on backorder.

whoops! i would have bugged you sooner but i dont have a car to put it on!



yeah act seems to be hard to get unless you're srmotorsports

I have the RB aluminum flywheel. I haven't got to do I lot of driving with it, but everything that I did was all steep hills, and I had no problem starting in the middle of a hill.

My buddy told me that with his RB steel flywheel he can't get a launch at 5k in 1st with it. Has TO4s etc, etc. He didn't say that it wasn't the drive either. I think I might just get the engine in and wait. Changing the flywheel woudln't be to bad in the car. I'm getting some ingersoll rand air tools here soon. They have a 1000ft lbs impact gun!!! Holy moly! I'ma get a 400ish lbs. one, should be able to get that big bitch for a nut off ya think? (120 psi compressor, usually set at 95-100).



-Marc

-Marc

12 lbs includes the counterweight - not sure what the flywheel itself weighs, but it feels like nothing. It could double as a frisbee.

Anything lighter is of questionable use - remember the pressure plate is pretty heavy.

The thing I like is the replaceable friction plate. I had a steel flywheel resurfaced once and it picked up a vibration (needed a rebalance).

To remove the nut I just used a flywheel lock tool, my 54 mm socket, and slipped a 3 foot long piece of pipe over my 2 foot breaker bar. It popped right off the first time without a problem. That was with the engine in the car. I had an impact gun and the RB tool on standby.



Why can’t your buddy launch at 5K? What does he say happens? A lightweight flywheel will not store the same energy as a stock flywheel at 5K, however it will allow you to accelerate faster than the stocker once the car has hooked up.

I have the heavier one of the two, I didn't have any trouble getting it from my local shop, it came in in less than 2-3 days. It took nearly 2 weeks for my clutch kit to come from ACT though.



It looks to be a nice piece. Only complant is no replaceable friction disk, for the cost, of the ACT wheel, I don't replaceing it a few years down the road.



I also had both of mine cryo treated at out local cryo place Deep Freeze Cryo.

I'm not sure, this is just what he metioned to me the other day. Anybody else have launch problems with a light flywheel? I think it just might be him needing to get used to the flywheel.. https://www.nopistons.com/forums/pub...1047683561.gif



-Marc

Racing beat lightweight( 12.9 lbs i believe) here on a street ported 13b turbo... it feels great when paired to a 6 puck clutch... revs fall down pretty quick.. but it revs quick too..