i just got my sir2 swap delivered and i need some advice on the fly wheel..... act 8lb flywheel? good? bad? i am running all motor and i need some help i am using an exedy racing clutch

 

I've had my JUN ultralight for about 2 years now... not a single issue with it. I love the fast revs it gives, and the minimal power loss. I think it weighs about 9lbs, so 8lbs would be OK... don't think I'd go any lighter than that.

edit- minimal power loss= poor phrasing on my part. I mean that it takes no power from the motor. No parisitic drain, or minimal parasitic drain from rotating assembly. That is to say that is has less parasitic drain than a normal "stock" fly. SORRY for the confusion.... it made sense to me when I posted it.....


Modified by advanracing62 at 4:14 PM 8/26/2003

 

so i will lose a little power? i was hoping to gain lol...........

 

im running the act prolite and act hdss clutch

love them both.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by yeer &raquo;</TD></TR><TR><TD CLASS="quote">
im running the act prolite and act hdss clutch

love them both.</TD></TR></TABLE> me too, almost 6 months on this setup, will never go back! act 8.8# is the way to go. I even lightened my crankpulley by 3 lbs...

 

what about the streetlite?? it weighs a few pounds more than the prolite..would it be noticeable over stock flywheel.. act

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by advanracing62 &raquo;</TD></TR><TR><TD CLASS="quote">I've had my JUN ultralight for about 2 years now... not a single issue with it. I love the fast revs it gives, and the minimal power loss. I think it weighs about 9lbs, so 8lbs would be OK... don't think I'd go any lighter than that.</TD></TR></TABLE>


You will not lose power with a lightened flywheel, what you will lose is inertia, AKA, momentum when shifting. I love how i can practically stop just downshifting


I have a 8.8 lb ACT flywheel with my b16 and i love how fast it accelerates and deccelerates.

 

IMO get a Fidanza.

 

Also upgrade your valve springs when going with a lighter flywheel. The more responsive your motor is the more valve spring you need.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Rocket &raquo;</TD></TR><TR><TD CLASS="quote">Also upgrade your valve springs when going with a lighter flywheel. The more responsive your motor is the more valve spring you need.</TD></TR></TABLE>

thats right Rocket educate these guys on what you posted on that other thread.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SiRWanabe &raquo;</TD></TR><TR><TD CLASS="quote">


You will not lose power with a lightened flywheel, what you will lose is inertia, AKA, momentum when shifting. I love how i can practically stop just downshifting


I have a 8.8 lb ACT flywheel with my b16 and i love how fast it accelerates and deccelerates.</TD></TR></TABLE>

thats one of the worst things you can do to your motor we have a great system on our cars called brakes... use them rather then downshifting... WAY tooo much shock to the motor.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Type R Bob &raquo;</TD></TR><TR><TD CLASS="quote">IMO get a Fidanza.</TD></TR></TABLE>


That's what I have and I freakin love the damn thing.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Rocket &raquo;</TD></TR><TR><TD CLASS="quote">Also upgrade your valve springs when going with a lighter flywheel. The more responsive your motor is the more valve spring you need.</TD></TR></TABLE>

Huh ?? wtf

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Charlie Moua &raquo;</TD></TR><TR><TD CLASS="quote">

thats one of the worst things you can do to your motor we have a great system on our cars called brakes... use them rather then downshifting... WAY tooo much shock to the motor. </TD></TR></TABLE>


I know how to drive my car. I don't downshift into 3rd going 60, I do however downshift the gears to slow down. Way too much shock to the motor? WTF

 

I second the motion---all in favor say "I".

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Type R Bob &raquo;</TD></TR><TR><TD CLASS="quote">IMO get a Fidanza.</TD></TR></TABLE>

 

question about this comment,
would the jdm itr(98) need an upgrade in valve springs when going with ligther flywheel. Does any engine?


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Rocket &raquo;</TD></TR><TR><TD CLASS="quote">Also upgrade your valve springs when going with a lighter flywheel. The more responsive your motor is the more valve spring you need.</TD></TR></TABLE>

 

upgraded valvesprings could only help..
i'm sure itr valvesprings would be coo for awhile..
just depends what else u have done to the motor..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ce &raquo;</TD></TR><TR><TD CLASS="quote">

Huh ?? wtf </TD></TR></TABLE>

Rebound time(valve spring) decreases as rate of acceleration increases. So even if you have a stock rev limit, stock valve springs may not be up to the task.

 

I am running exedy flywheel and exedy clutch. I love them both. And I am running skunk 2 dual valve springs.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b18crx &raquo;</TD></TR><TR><TD CLASS="quote">I second the motion---all in favor say "I".

</TD></TR></TABLE>

I

 

im running clutchmasters 7.5lbs almost same as fidanza and its been great except...

i know it is arguable but i recomend loctite or threadlock of some sort on the flywheel bolts. mine backed out completely. luckily it only ruined my clutch.

 

I was wondering what everyone thinks about the Exedy Flywheel.

+/- 9lbs + Exedy Racing Organic clutch going on B16a2 with boltons.

Another thing...why would I need to upgrade the valvesprings when going with a lighter flywheel?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Charlie Moua &raquo;</TD></TR><TR><TD CLASS="quote">

thats one of the worst things you can do to your motor we have a great system on our cars called brakes... use them rather then downshifting... WAY tooo much shock to the motor. </TD></TR></TABLE>
So I guess that's why Formula 1 racers, rally racers and all others always go into neutral when they start slowing down... they simply only use their brakes! i was wondering also .. yeah I'm being sarcastic.
So quick question when you slow down for a turn you put yourself out of gear and apply the brakes? so basically your wheels are free to run however they want? I'd hate to be behind you in fast corners...

There is a difference between downshifting stupid, and downshifting catching your rpms as you slow down, using the engine brake as you apply your brakes to slow your car down even more and quicker.~my 2cents that will get flamed here in a sec...

 

you guys still bickering?

get the lightest possible flywheel and tune your motor.

drive in love with your car.

 

Lighter flywheel=Less Rotational Mass

I got the ACT and love it. The ACT is also Chromoly