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Lightweight flywheel- worth the money?

Old 05-22-2017, 06:45 PM
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Lightweight flywheel- worth the money?

I am currently in the process of rebuilding my motor and when removing the flywheel i had some issues (kicking myself in the teeth for this). To sum it up I couldn't get it to budge and tried smacking it from the back side instead of the front. Needles to say I hit the ring gear and it then hit the floor.. (justification for a lightweight flywheel ). I see a lot of people having their flywheel "shaved" down. Should I get a new lightweight flywheel and counter weight or should I just get a new (used) stock flywheel? Oppinions?
Old 05-22-2017, 06:47 PM
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if the motor is out, you might as well look at the clutch and flywheel.
I mean, when else are you going to drop the power plant to do it.

is it worth it?
ehh, that's a personal call.
I threw in a BHR flywheel when I had my motor replaced and I really like the difference it made.
Old 05-22-2017, 06:52 PM
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I know the clutch is new, the previous owner needed a new clutch and so he put one in. It grenaded on him. So he then put a good one in it I believe it's stage 2 exedy.
Old 05-22-2017, 06:54 PM
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Is it a noticable difference? Or is it something you wouldnt notice without a tuner and some other upgrades
Old 05-22-2017, 07:00 PM
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Originally Posted by Eight-gent_Xero
Is it a noticable difference? Or is it something you wouldnt notice without a tuner and some other upgrades
A light flywheel will be noticible for sure. It will Rev up quicker than the heavy stock one and be a bit more difficult to Rev match if you aren't used to it
Old 05-22-2017, 07:12 PM
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Ok thanks! I've head slot of rave about the bhr flywheel. Not really looking to spend $400 on a flywheel plus an expensive counter weight. What would be another good option for a good price. I looked at the exedy one and it seems to be pretty decent and right around $250
Old 05-22-2017, 07:12 PM
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^^^ yup, I concur with dannobre on this one.
the flywheel is definitely noticeable if you've driven a stock RX8 before. Again, would I do the swap just for the heck of it on a street driven car? Nah, probably not unless I already had the motor out for something else.

the BHR option as usual isn't the cheapest product out there but it's a quality item and I highly recommend it.
Old 05-22-2017, 07:19 PM
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BHR makes some high quality parts. I have their coils. Id love to get the flywheel but i just dont have the money right now. I also want to make sure the engine is going to run again before I spend a lot on the extras. That's why I'm looking towards the exedy. If I had the extra $500 for the bhr flywheel, i would 100% get it.
Old 05-22-2017, 07:50 PM
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On a street car, it just makes the car harder to drive and makes noise, IMO. It is more difficult to start out in 1st gear, and it is more difficult to rev match, when downshifting. The 8 is already fast to rev up and down, so...

A lightweight flywheel also introduces flywheel lash, which is unpleasant on a street car.

I do like lightweight flywheels with piston engines.

.

Last edited by Steve Dallas; 05-24-2017 at 08:17 AM.
Old 05-22-2017, 07:55 PM
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So you think for a street car I should just get a new factory flywheel instead of a light one? Not going to be my daily driver but I still don't want to make it hard to drive I want to have fun with it
Old 05-23-2017, 10:03 AM
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I personally like lightweight flywheels in some applications. I had them in FC, Vette, etc.
The RX8 revs pretty quick as is. I'd leave it alone unless you just have to spend some $$
Old 05-23-2017, 10:04 AM
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It's not so much that I need to spend money. It's more all g the lines of I need a new flywheel so should I just get the lightened flywheel now type of deal
Old 05-23-2017, 12:00 PM
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nope, no complaints here with the lightened flywheel.
and more difficult to drive on a street car? C'mon, this car is so easy to drive as is and the flywheel doesn't change that much.
It's no different than getting a new clutch: after a few take offs, you figure out what the car is doing and then you're good to go and never have to think about it again.


now, as for the OP's circumstances: you need a flywheel either way, it just comes down to how much you want to spend.
what's a new OEM flywheel run? (I honestly don't know)
Old 05-23-2017, 02:18 PM
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I went with the EXEDY Stage 1 clutch and their chromoly flywheel. It wasn't so much lighter that it made it harder to drive (which was a big concern of mine). Strangely, I actually found it easier to rev match because the engine spins up quicker to get to the desired RPM. My experience with a lightweight flywheel in my old 2005 Mazda3 was that I didn't care for it and it definitely made rev matching more difficult, but I may have dropped more weight with that one. I can't remember for sure. Then again, I also had clutch chatter with the aftermarket setup, and that got annoying fast.
Old 05-23-2017, 05:07 PM
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Originally Posted by Jedi54
nope, no complaints here with the lightened flywheel.
and more difficult to drive on a street car? C'mon, this car is so easy to drive as is and the flywheel doesn't change that much.
It's no different than getting a new clutch: after a few take offs, you figure out what the car is doing and then you're good to go and never have to think about it again.
To be clear, I have several cars with manual transmissions, and I'm never really fully accustomed to driving the 8. I also have 90 track hours on my clutch, so it's a little crunchy.
Old 05-23-2017, 07:30 PM
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Originally Posted by Jedi54
nope, no complaints here with the lightened flywheel.
and more difficult to drive on a street car? C'mon, this car is so easy to drive as is and the flywheel doesn't change that much.
It's no different than getting a new clutch: after a few take offs, you figure out what the car is doing and then you're good to go and never have to think about it again.


now, as for the OP's circumstances: you need a flywheel either way, it just comes down to how much you want to spend.
what's a new OEM flywheel run? (I honestly don't know)
Jedi- I priced it at my local advanced auto for ***** and giggles and they told me $748. So either its made of gold or they are getting greedy lol. Online i see them for around $400 give or take
Old 05-23-2017, 11:31 PM
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All honestly I think the stock Fly wheel is good enough for most applications and its actually lighter compared to other cars already...

Unless you'll be doing a lot of drag racing with it its not worth it IMHO.

The downside of having lighter flywheel is it will introduce more transmission noise and vibrations...

Unless your looking at dual clutch setup then that another story
Old 05-25-2017, 12:30 PM
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would the combination of a lightened flywheel (im going to get the act from BHR), and lightweight pulleys together make it even harder to drive? or do the pulleys not remove enough weight to make a difference? going to go with all new pulleys at the same time while the engine is out of the car. not a whole lot of space in the engine bay to work on stuff
Old 05-25-2017, 01:17 PM
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Pulleys are basically just bling. So they will make it emotionally harder to drive the car, yes.
Old 05-25-2017, 02:48 PM
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Guess that was an easy answer. looks like the stock pulleys are gonna stay
Old 05-25-2017, 02:50 PM
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Hey Charles, i was going to message you and see if you happen to have a balanced set of rotors and e shaft? i need a new rear rotor and have been told that i would have to have it re balanced
is that true? if it is its going to be cheaper to buy a good used set rather than get mine re balanced
Old 05-25-2017, 03:23 PM
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I like mine, got it from Charles before he had his own. I have a "pro" one, and it has been a bit noisy. there is a rattle that you can hear if you are looking for it. A "street" one may have just enough extra mass to dampen it out.

Also, the overall weight is of interest, but where where the weight is located is also important.
Old 05-25-2017, 05:01 PM
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Originally Posted by Charles R. Hill
Exactly, and a long point of discussion. As for the BHR Flywheel, I took off weight everywhere that I could without sacrificing strength, safety, or durability.
I'd love to get your flywheel but my interest is getting the engine back together and making sure it runs right and is going to hold up before I spend the extra money. But regardless I need a flywheel because mines not good for anything but a boat anchor lol
Old 05-25-2017, 08:15 PM
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Originally Posted by Charles R. Hill
Feel free to e-mail me at Charles@BlackHaloRacing.com and I will be happy to discuss it with you.
I sent you an email. Thank you


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