Juat wondering if the fidanza 9.5 pound flywheel will cause a check engine light (cel)? Hopefully somebody who has this installed can contribute to this.

 

anybody...

 

If anybody knows please respond, because I heard that the ACT prolite could trigger a cel. And the fidanza one that I am getting is almost 2 pounds lighter than the prolite. So I was just wondering because I don't want to put that in and get down the road and see that damn cel triggered.

 

Come on somebody has to know! I just heard that the ACT prolite flywheels can trigger a cel. So I was wondering if anybody knows if the fidanza 9.5 lb flywheel will cause a cel? Please help!

 

nope, i have it installed on my car and love it! great piece. takes a little getting used to bc it revs so easy, but no cells or anything like that. highly recommend it. gl with your set up

 

Thanks very much, it should be here anytime now. I believe I will be matching it with the clutchmasters 6 puck kit, since I am worried about the ACT's high RPM lockout issues I have been hearing about.

 

I have it as well...no issues here

 

My friend has the Fidanza with no CEL errors. I have the 10.8 lb Competition flywheel and its been perfect for me too.

 

what clutch are you running with that flywheel?

 

I have an ACT prolite sitting next to me. I'm waiting on my clutch kit, fluid, and line. I sure hope it doesn't give me a CEL. I don't see why it would.

As far as I know the prolite is 10 pounds. That's what is advertised on all the sites I've seen it at. If yours is 9.5 pounds you're only gaining 1/2 pound on the ACT.

Some other considerations:

The prolite is one piece steel so it should be much more rugged. The fidanza is aluminum with a steel friction surface. As others on this forum have stated there's some parts that are best left steel. Aluminum just doens't tolerate heat and stress as well as steel. Mating two materials together with vastly different expansion/contraction/wear rates doesn't sound like a good idea to me either. To only gain 1/2 pound and use aluminum instead of steel I'll take the steel.

If I posted a picture of the prolite you would see that the wieght is removed from the outside of the wheel. I might just do that for you. Almost every site I've seen the flywheel on posts pictures of the streetlite version in the prolites place. Anyone with a basic physics understanding knows that the outside of a disk rotates many times faster than the middle. Removing rotating inertia from the outside of the disk has many times the inertia dropping effect as just removing weight from the whole disk or from the center area.

 

Yea i know both flywheels real well. but i dont think you call sell me on the prolite from ACT. I have never really liked ACT, I guess thats just my own preference and I haven't heard anything bad about Fidanza yet so I figured I would give it a try and if I don't like it... I will get rid of it and get something else. I was going to get the Unorthadox one which was even supposedly lighter than Fidanza's. And as far as I know alluminum disapates heat faster which would keep it cooler, but hell what do I know huh?

 

It might disapate the heat faster but if the heat gets too high, which is easy in a high horsepower clutch, aluminum melts at a really low temperature. It's also prone to stress fractures. For something that takes the constant abuse a flywheel does I would think you would not want two different materials. Say the aluminum is disapating the heat fast, well the steel friction surface isn't so you have two vastly different temps on the same disk, as they cool and contract at different rates the movement will work to tear the two materials apart.

Something else while I'm brainstorming: The lighter the flywheel the less thermal mass. The less thermal mass the less heat energy it will take to change the flywheels temp. In other words a lighter flywheel is going to probably run a little hotter than a standard wieght one having less mass to distribute the heat absorbed from the clutch friction.

I'm sure fidanza and others have thought out their design carefully. I'm not trying to second guess them. I'm sort of just giving my thoughts, but I think they're relevant. I would be curious to find out if anyone on evoM has had issues with high HP applications and these aluminum/steel composite lite weight flywheels or if anyone has worn one out and had problems with longevity.

 

I understand where your coming from but I don't think some of the top flywheel companies have gone with the aluminum without testing them and being ok to sell something that they know will fail or not perform like it should. I am sure ACT is great and if the Fidanza fails me... I will try another company. But your position makes since, but these are both proven companies and am sure both are going to do a great job... I hope!

 

Nice debate!!!!!!!!