Effects of lightweight flywheel? [merged] light weight lightened aluminum ACT fidanza

[Fryguy]

All light weight flywheel newbie threads are merged here.

I'm looking for my car to be very fast at lower speeds; my main goal is very fast acceleration. Will a lightweight flywheel be beneficial to this? Or should I just save up all my money and drop a turbo on my 84k engine

 

[turbosax2]

http://www.dsmtuners.com/forums/newbie-forum/286515-steel-aluminum-flywheel-w-clutch-change.html

 

[Coder24]

http://www.dsmtuners.com/forums/newbie-forum/286515-steel-aluminum-flywheel-w-clutch-change.html

awesome thanks. That didnt pop up when i searched but thanks.

 

[bmoha2]

When I replaced my clutch years ago there weren't many options for lighter flywheels. It was pretty much Fidanza or stock. Fidanzas were expensive! I sourced out a Jun lightweight cromoly flywheel! I spent as much as I would have with the Fidanza. It's heavier than the Fidanza but much lighter than the stock flywheel. I have put 45k on ti and I have had no problems. I haven't heard a thing about the flywheel in ages so I don't know if they even still make it. Now if i were to redo the clutch and flywheel I would go with the ACT without a doubt. Then the only question is which act to go with? Streetlite or? I didn't and still don't trust a aluminum puck style flywheel friction surface. And damn it all if clutch and flywheels aren't way less expensive now!!!

 

[98DropTop]

Do you guys think I will need a new fork? flywheel bolts? thanks

 

[meliketoball]

I'd go with steel.

 

[meliketoball]

I'd go with the traditional steel flywheel. So what if its lighter, it's stronger then alum and chromolly.

 

[1992awdlaser]

Do you guys think I will need a new fork? flywheel bolts? thanks

If you are replacing the clutch you might as well replace the clutch fork, throw out bearing, and pivot ball. Unless of course you want to take the transmission out again later when you have to replace one of them due to wear or breakage.

 

[1992awdlaser]

My reply from the other thread: I have an ACT and would reccomend it. I won't use an aluminum flywheel like the fidanza because of the metal being to soft. This allows the bolts to back out and the flywheel to warp when abused too much.

 

[UGOT8UP]

I'm thinkin about getting a lightweight flywheel, what are the trade off's. On my LS1 T/A I lost some 60' time and realy didnt gain any uptop, is this true with DSM's aswell if so do they make a heavy flywheel for improved 60' times??

I would like to know this info from ppl who have them and race with them I realy dont want other ppl's opinions who do not know first hand and do not go to the track often, Ive serched for the awnser that I am trying to find and have found nothing of use.

What is the pro's and con's of each! If you have the time slips of before and after that would be nice

 

[pboglio]

Sorry, no 60' times, not a drag racer. Though with a 14 lb lightened flywheel I definitely lost all of the advantage launching off the line. With the stock 19 lb flywheel I could explode off the line at 4500 rpms like a canon shot. On the lightweight flyhweel I've upped the stutterbox launch rpm to 6000 rpms and it helped but it never felt the same as with the heavier stock flywheel.

Upside is the car is definitely faster in gear with the lighter flywheel, mostly 1st, 2nd, and a bit in 3rd gear. Got a little bit more vibration thru the clutch pedal as well. Car tends to stall if you don't raise the launch rpms. RPM drop between gears is noticeable but not a big deal. Typical light flywheel stuff. I'm going to an 11 lb flywheel in the future.

 

[dsmfa9nutter]

Never go with a lightweight flywheel with an awd car, you need the heavy stock piece to keep momentum.

 

[UGOT8UP]

Thanks for the replies, but what I am realy looking for is somebody with some timeslips to see how much was lost in the 60' what kinda ET gain or loss there was and most importanly Trap speeds.

Is there a heavy flywheel for these cars?

 

[UGOT8UP]

Never go with a lightweight flywheel with an awd car, you need the heavy stock piece to keep momentum.

Im not sure how clear I was on my question so here I go again, I know why heavy flywheels offer better 60' times and why ligher ones offer acceleration...that was not an awnser I was lookin for...I need some real world results not opinons or butt dynos...Im lookin for the best flywheel for drag racing wether it be light, stock or heavy...

 

[dsmfa9nutter]

Try using common sense and apply what you already know ("I know why heavy flywheels offer better 60' times and why ligher ones offer acceleration") to your situation and what you need. Your STOCK flywheel is best for your application because you're AWD. If you really really really want the last tiny bit of performance that would change anything, get your STOCK flywheel lightened by RRE.

 

[UGOT8UP]

Your just not getting it????????????no butt dyno's,no opinions ###,Im lookin for fellow drag racer's who know there 60' and ET, not street racers sorry,

Im thinkin that a heavy or stock flywheel is good for my HP levels because I need that extra inertia to move me off of the line, If I was makin some GOOD HP #'s than a light one is good because I have the extra torque to make up for the lost inertia.

I would like some veiws of ppl who have done this in my 11 sec range to see if my theory is just a theory or if I am correct.

Thanks for all of your help

 

[dsmfa9nutter]

And you dismiss my recommendation because the car in my profile is fwd? When will people learn.

 

[viprez586]

A new member that knows it all and doesn't want people's thoughts or opinions.
Hmm.

Why don't you search through peoples time slips- look at their profile for their mods- PM them with your specific question.


Oh wait I'm not running 11s so i must know nothing.

 

[UGOT8UP]

Why would I look for days on end through ppl's timeslips PM them when most likley they no long post anymore???? what I want is simlpe awnsers not draggin this thread out forever,

Yes I am a new member, no I dont want opinions I want FACT b/c that is what matters in racing, opinion would be something I was looking for if I wanted to know how it acted on the street than that would be helpfull, Im just trying to veryify my theory, Ive been racin for a long time Ive been DEEP 7's in my dad's race car and mid 9's in my own car, Im very knowgable and not a kid, Ive built alot of cars and still own alot of FAST cars so far my 11sec car is not fast, I want the drag racers out there to chime in because that is what I do and who I am , Im not being a dick as much as I sound like one, sorry about that but I dont want this post goin on forever B/C im lookin to purchase a flywheel as soon as I know what to get based upon the facts I recive from this post. Thanks

 

[NoCreep]

Why would I look for days on end through ppl's timeslips PM them when most likley they no long post anymore???? what I want is simlpe awnsers not draggin this thread out forever,

Yes I am a new member, no I dont want opinions I want FACT b/c that is what matters in racing, opinion would be something I was looking for if I wanted to know how it acted on the street than that would be helpfull, Im just trying to veryify my theory, Ive been racin for a long time Ive been DEEP 7's in my dad's race car and mid 9's in my own car, Im very knowgable and not a kid, Ive built alot of cars and still own alot of FAST cars so far my 11sec car is not fast, I want the drag racers out there to chime in because that is what I do and who I am , Im not being a dick as much as I sound like one, sorry about that but I dont want this post goin on forever B/C im lookin to purchase a flywheel as soon as I know what to get based upon the facts I recive from this post. Thanks

If you know so much & have fast cars,you should know which flywheel is best for your car

 

[GRAVEDIGGER]

I'm going to go ahead and respond for whatever it's worth. I have an AWD with the lightweight flywheel, in your "11 sec range" and I have noticed that it pretty much comes down to being comfortable with either setup. Yeah, you may have to leave with a little more rpm than usual, but I think the lightweight more than makes up for it as soon as you leave and get your foot in it. I just always felt that the rpms rose quicker and felt better on the top end as well. Maybe I'm stupid, but I actually never knew that a heavier flywheel would be better on takeoff. I've just always thought it was lighter was better, especially in drag racing. That's why I converse here though, to learn from others. Ohhh. and my 60ft times were nearly identical. (within my normal range of inconsistency)

 

[UGOT8UP]

If you know so much & have fast cars,you should know which flywheel is best for your car

WOOOOOOW, all I have here is a theory. This is my first DSM,manual trans, AWD or even 4cyl for that matter so I have no idea how these cars respond to upgrades hence I want some experence guiding me here not kids who think it may do this or that because I can guess with the best of them so if ya dont mind keep them little childish remarks to your self!! thanks

 

[UGOT8UP]

I'm going to go ahead and respond for whatever it's worth. I have an AWD with the lightweight flywheel, in your "11 sec range" and I have noticed that it pretty much comes down to being comfortable with either setup. Yeah, you may have to leave with a little more rpm than usual, but I think the lightweight more than makes up for it as soon as you leave and get your foot in it. I just always felt that the rpms rose quicker and felt better on the top end as well. Maybe I'm stupid, but I actually never knew that a heavier flywheel would be better on takeoff. I've just always thought it was lighter was better, especially in drag racing. That's why I converse here though, to learn from others. Ohhh. and my 60ft times were nearly identical. (within my normal range of inconsistency)

Thanks now we are getting some where close to the awnser I am looking for. With the LW FW im gonna have to launch at higher RPM's to maintain my 1.70 60' but I will see a higher trap speed and ET?

 

[1992awdlaser]

I haven't had my car to the track yet. But it launches very hard with the stutterbox function in dsmlink enabled. Keep in mind I am building 7psi at the line with this. This is with an ACT flywheel.

I have driven my friends low 12 second evo at the track that has an ACT flywheeel in it and got a 1.63 60ft. This is without a stutterbox.

I would get the ACT and stay away from the fidanza.

 

[tkelly27]

http://www.dsmtuners.com/forums/new...ht-weight-lightened-aluminum-act-fidanza.html

http://www.dsmtuners.com/forums/search.php?searchid=5967443

There you go. That took me 30 seconds to search for it. You'll notice it starts in 2002 there weren't quite as many go fast goodies back then.

Honestly, you may not find the specific info you are looking for. Most people that change out their flywheel are also changing the clutch too.

 

[GRAVEDIGGER]

Thanks now we are getting some where close to the awnser I am looking for. With the LW FW im gonna have to launch at higher RPM's to maintain my 1.70 60' but I will see a higher trap speed and ET?

^^^ That's the way I see it UGOT8UP. Hopefully some others will chime in with some input to back or disprove my theory. I'm usually (on a good launch) right there in that 1.7 60ft time even with the 20g. AND I'm NOT building boost at the line with any kind of studderbox.