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450 hp + and lightweight flywheel ?

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Old 03-12-08, 11:00 AM
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450 hp + and lightweight flywheel ?

I've been using SRmotorsports 9.5lb flywheel and the stock twins at 16lbs boost and it was great. I know there's alot of info on this, which i read, just aiming this towards people with 450 hp and up. Now that i have upgraded to a single (R85) and just finished my motor, I can't decide what flywheel to use. I do like drag racing at the strip, but also drive the car around the town. I plan on running 25-27 lbs of boost and have never driven a single turbo 7 before. I know i will have to shift really fast, since it will rev faster with a single, and i heard that drag racing with a light flywheel, that when you shift the rev drop faster than a stock flywheel, but it also revs faster than the stocker. How's the performance drag racing with a light weight flywheel on a high HP rx7. Would you go back to stock or love the light flywheel?
Old 03-12-08, 11:17 AM
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If your planning to run 25-27 lbs you better go twin disc. There good on the street and good at higher h/p levels. Do it once do it right That saves money over going cheap more than once!
Old 03-12-08, 12:55 PM
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IMHO: the difference between a LWFW and the stocker isn't huge. I've noticed slightly better engine spool-up and faster rev dropping. But nothing that hurt the drivability or dramatically changed trap times.

I wouldn't worry about it and just use the LWFW for the reduction in weight.
Old 03-12-08, 07:13 PM
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I was told the ACT street/strip HD clutch can hold 408 lbs of torque, I doubt i'll have that much torque. I just look up the exedy clutch it's $1600. Thanks for the info. I'll go that route when i toast this one.

Thanks Zenofspeed is that with a 450 + car ? I know it's not that much of a difference when my car had the stock turbo at 16lbs of boost, but i know the single turbo will rev much faster, just not sure .

Anybody know what Ernie T uses, i saw his launch and was like WOW,that's what i want my car to do !
Old 03-12-08, 07:45 PM
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I belive earnie is using a triple disc. I cut 1.52 60 ft on a rps ceramic with 480 h/p but im on the edge of needing a better clutch.
Old 03-12-08, 07:49 PM
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What about flywheel for Ernie and you ^
Old 03-12-08, 08:09 PM
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Originally Posted by silverflash2
I was told the ACT street/strip HD clutch can hold 408 lbs of torque, I doubt i'll have that much torque. I just look up the exedy clutch it's $1600. Thanks for the info. I'll go that route when i toast this one.
The S/S might be able to hold that much, but for how long? If you're going to be regularly dumping the clutch, I would look for something that's more durable so that you won't have to go back and replace it in a couple of months.
Old 03-12-08, 08:57 PM
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quick question, what would be better a prolight or streetlight flywheel? any noticable differences?
Old 03-12-08, 09:27 PM
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Ernie's would be part of the clutch set up! Im running stock fly wheel.
Old 03-12-08, 10:08 PM
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Originally Posted by FD3S2005
quick question, what would be better a prolight or streetlight flywheel? any noticable differences?
I'd also like to know i'm considering buying one to go along with my streetport motor?
Anyone?
Old 03-13-08, 12:37 AM
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+1 ^ im gettin all my things ready for a rebuild and would like to know which to get.. i called pettit before to ask them a couple questions but about their rebuilds and he was saying the lighter the better when i asked about the flywheel.. doesnt really answer my question tho
Old 03-13-08, 08:22 AM
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The ACT street/strip has a basically stock clutch disc, and will not hold a single turbo running 15 psi, let alone 25+.

I'd go w/the lightest flywheel you can for a street car, in this case the prolite.
Old 03-13-08, 10:45 AM
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http://turboimport.com/catalog/rx7.htm

^^^^ Good Friends past this on to me. Best deal I've seen on the ACT Flywheel.

My Streetlite will arrive tomorrow.

NOTE: If you are going to order from them, be ready to wait a little longer for it. I placed my order on 2/27/08 and it's arriving 3/14/08.

D-
Old 03-13-08, 08:23 PM
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Originally Posted by MazdaGuy42
http://turboimport.com/catalog/rx7.htm

^^^^ Good Friends past this on to me. Best deal I've seen on the ACT Flywheel.

My Streetlite will arrive tomorrow.

NOTE: If you are going to order from them, be ready to wait a little longer for it. I placed my order on 2/27/08 and it's arriving 3/14/08.

D-
Thank you for the link kind Sir.
I am looking for a clutch and lightweight Flywheel and those are the best prices i've
yet to see on ACT clutch's.Guess I know where i'll be ordering my new clutch and Flywheel from.

Old 03-13-08, 08:55 PM
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i believe horsepowerfreaks will beat any advertised act parts.
Old 03-14-08, 12:57 AM
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horspowerfreaks?? never heard of them... on the turboimport site which one is the ACT S/S?

rich you say get the prolight which i am thinking about but i am on ACT's website and it says

Prolite

- Preferred for Road Racing or minimum inertia
- Quick throttle response and acceleration
- Lightest with lowest inertia
- Reduced drivability


Streetlite

- Preferred for Street and Drag Racing
- Improved throttle response and acceleration
- Considerably lighter than stock
- Most durable flywheel available
- Good drivability


why would it reduce drivability?

Last edited by FD3S2005; 03-14-08 at 01:25 AM.
Old 03-15-08, 07:28 PM
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bump, anyone have the answer to this?
Old 03-15-08, 08:51 PM
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I've got the prolite combined with an act/street strip and it drives like stock imho.
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