8lbs. too light? - Tuner-Junction

sosojdmaccord94 · #1 (**permalink**) March 24th, 2006, 10:02 PM

So the plan: 8lb Flywheel, Stage 1 clutch.

Okay, this is for a DAILY driver. Is 8lb too light on the fly? And also, Does anyone know the weight on the factory flywheel for my car? (That's you, Kevin) I heard the theory from Modified Mag on a clutch/flywheel project that they were doing that :

For every 1LB. taken from a reciprocating device (flywheel) is in turn equal to 2.7 HP gained to the wheels. (I think they said "reciprocating" but that means something like "-to move back and forth"

That's why I want to know the original weight of the flywheel. (I don't want to wait until I actually do the removal)

....any thoughts?

Johnlude85 · #2 (**permalink**) March 24th, 2006, 10:09 PM

i have an 8 pounder and there is absolutely no difference in driveability. sometimes you need to give it a lil more gas depending on the hill your facing up, but its no problem at all. u live near jersey, ill let ya test drive the lude with the 8 pound fw if ya want.

sosojdmaccord94 · #3 (**permalink**) March 24th, 2006, 10:18 PM

Far from it, but thanks for the offer. Did you notice a good improvment with the new flywheel? Were you able to climb through the gears a lot faster?

Johnlude85 · #4 (**permalink**) March 24th, 2006, 10:24 PM

Quote:

Originally Posted by sosojdmaccord94

Far from it, but thanks for the offer. Did you notice a good improvment with the new flywheel? Were you able to climb through the gears a lot faster?

yeah, it defenately revs up faster. my car is running far from good right now, i have either some serious wiring issues ar a bad ecu, im hoping that the chipped p28 i just bought from phearable.net cures my problems. but yeah...even with all the problems my car has right now, it still pulls pretty hard with this fw.

sosojdmaccord94 · #5 (**permalink**) March 24th, 2006, 10:31 PM

Pimp. That's what I wanted to hear. (still waiting on kevin to see this thread...I wanna know the stock weight)

...fine. I'll search.

Johnlude85 · #6 (**permalink**) March 24th, 2006, 10:34 PM

i think the stock weight is 21 pounds? im not 100% positive though.

sosojdmaccord94 · #7 (**permalink**) March 24th, 2006, 10:47 PM

aah. it is. I just saw it. Thanks

street_accord94 · #8 (**permalink**) March 25th, 2006, 02:30 AM

sorry about the delay...i had to drive home to NY, and when i got home i found i had to play with my router to get it up and running right again

as you saw, the stocker is 21lbs...8lbs should be fine, as john said just remember to give it a little more gas to overcome the desire to stall due to reduced inertia, that way you dont look silly

njn63 · #9 (**permalink**) March 25th, 2006, 04:10 AM

2.7whp per pound sounds very high to me. I mean, you think you're going to gain 35 whp with an 8 pound flywheel? Sorry, i'm very skeptical of that. If it is true, i'll be buying one tomorrow.

Also, a general formula like that would never be correct because the moment of inertia would be effected not only by the amount of mass, but the placement of it related to the rotational axis. This has been proven on a dyno using 2 different sized rims that were the same overall weight (weighed with tires of course). The bigger rim which had the mass concentrated further outward actually made the dyno read lower by around 8 hp if i remember correctly (test was done on an rsx-s)

Johnlude85 · #10 (**permalink**) March 25th, 2006, 05:46 PM

Quote:

Originally Posted by njn63

2.7whp per pound sounds very high to me. I mean, you think you're going to gain 35 whp with an 8 pound flywheel? Sorry, i'm very skeptical of that. If it is true, i'll be buying one tomorrow.

i dont know about all that either. but my theory is, if your in there to do a clutch or something, defenately upgrade the fw. its a great upgrade abnd it feels awesome. thats the reason i have one, when i got my swap one ith the things that was a "must do before dropping in" was upgrading the clutch, and i got a clutch/fw kit off ebay (name brand shit) for pretty cheap.

Ricky · #11 (**permalink**) March 25th, 2006, 07:45 PM

it isnt as bad as people say alot of people like to bitch thats the problem. The big thing is you have to get used to it, from what ive seen on freinds cars it has made a noticible difference

street_accord94 · #12 (**permalink**) March 25th, 2006, 10:01 PM

Quote:

Originally Posted by njn63

2.7whp per pound sounds very high to me. I mean, you think you're going to gain 35 whp with an 8 pound flywheel? Sorry, i'm very skeptical of that. If it is true, i'll be buying one tomorrow.

Also, a general formula like that would never be correct because the moment of inertia would be effected not only by the amount of mass, but the placement of it related to the rotational axis. This has been proven on a dyno using 2 different sized rims that were the same overall weight (weighed with tires of course). The bigger rim which had the mass concentrated further outward actually made the dyno read lower by around 8 hp if i remember correctly (test was done on an rsx-s)

I agree with you nick...2.7whp/lb is pretty ridiculous, and the "average" could never accurately predict the outcomes. I've seen an e36 bmw dyno before and after a 14lb reduction in flywheel mass and gain 10.8whp...a claim in that region might be a little more in line. I remember super street running an article claiming the same figures a while back and i had to tell a few people the real deal since they were running to get lightened flywheels right after putting the mag down

Type_SH RaCer · #13 (**permalink**) March 26th, 2006, 12:31 AM

I have a 8lb in a 01 lude and i enjoy it every time I drive. I do however get a lil chatter when cold in the mornnings.

Once you get it going it's veary fun.

What clutch will you be going with? You are arnt U?

Johnlude85 · #14 (**permalink**) March 26th, 2006, 12:37 AM

yea, i sem to get a little chatter when mines warmed up. i think its chatter? only when i start off in first sometimes it sounds like the tranny makes a little creeking noise.

Type_SH RaCer · #15 (**permalink**) March 26th, 2006, 12:40 AM

I can only hear it when im at a stop/ idling

Johnlude85 · #16 (**permalink**) March 26th, 2006, 12:42 AM

Quote:

Originally Posted by Type_SH RaCer

I can only hear it when im at a stop/ idling

eh...mine happens when i start from a stop.

Type_SH RaCer · #17 (**permalink**) March 26th, 2006, 01:00 AM

Quote:

Originally Posted by Johnlude85

eh...mine happens when i start from a stop.

I think that more of....studering
Drop it at 2.5k and no more studering. =)

sosojdmaccord94 · #18 (**permalink**) March 26th, 2006, 01:51 AM

well, it is a THEORY after all. I don't know and I really don't care about numbers. I just want to feel a faster rev.

The flywheel and clutch are going to be names you really don't know, I'm sure. They are made by ZOOM ( www.zoomclutch.com ). I work at Advance Auto Parts and I can get a great deal. And a neverending warranty.

So why the hell not go with that. I actually just ordered the flywheel today. It should be here Monday morning. I will order the stage 1 clutch from Zoom when my tax return gets back. The clutch is from their 2006 line and is a carbon/kevlar material. It outperformed Centerforce, according to them. But yah, I'm excited to get it all together.

I was thinking about making some video to show the results of the RPM's (before and after)...I'll kill 2 birds with one stone and throw it in the Exhaust Clips Forum.

Thanks for everyones feedback.

njn63 · #19 (**permalink**) March 26th, 2006, 05:17 AM

Quote:

Originally Posted by sosojdmaccord94

And a neverending warranty.

So why the hell not go with that.

Um... warranties don't pay for labor. I don't expect problems, but worrying about warrenties on something like a clutch is kind of something i don't do.

Also, i've been kinda scared of lightweight flywheels for a while. I've seen a couple flywheel explosions (not sure if they were lightweight or stock flywheels) and they're scary as hell. I have been tempted to build a scatter sheild for my car for a while just in case.

Type Slow · #20 (**permalink**) March 26th, 2006, 11:56 AM

i've driven with a fidanza 8lb, just revmatch on your downshifts and you should be good. Daily driven.