Flywheel w/ internal counterweight?
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v e i l o c i t y
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From: Sweden
Flywheel w/ internal counterweight?
I got one from SR Motorsports and at first I thought I recieved the wrong part... but they say it weighs more due to it has an internal counterweight.
What makes me think twice before installing it is that it seems VERY heavy... about 20lbs! Is this normal for a flywheel with internal counterweight?
I wanted one that is lighter than stock, but I donīt know the total weight of the OEM flywheel + counterweight.
Opinions?
What makes me think twice before installing it is that it seems VERY heavy... about 20lbs! Is this normal for a flywheel with internal counterweight?
I wanted one that is lighter than stock, but I donīt know the total weight of the OEM flywheel + counterweight.
Opinions?
Thread Starter
v e i l o c i t y
Joined: Oct 2004
Posts: 340
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From: Sweden
Yeah, Iīm aware of the weightdistribution and why it is important. Thing is... I havnīt seen any flywheels with internal counterweight on the market for this car.
Whatīs the benefits and disadvantages of having this?
Whatīs the benefits and disadvantages of having this?
Administrator
Joined: Jul 2002
Posts: 21,958
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From: portland oregon
http://www.srmotorsports.com/RX8_Clutch_Flywheels.html
seems their flywheel for the 8 has a seperate counterweight . the stock flywheel is about 20lbs and its counterweight is integral
seems their flywheel for the 8 has a seperate counterweight . the stock flywheel is about 20lbs and its counterweight is integral
Thread Starter
v e i l o c i t y
Joined: Oct 2004
Posts: 340
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From: Sweden
>zoom44
Thatīs what I reacted to also. But when asking them they say that the "kit" has been modified over the years and that I recieved the correct part, although their flywheel seems to have an internal counterweight now.
I recieved the part in the middle of this picture:
I also got the other stuff in the picture since I ordered their complete kit - Part Number RE-13120EXT
Thatīs what I reacted to also. But when asking them they say that the "kit" has been modified over the years and that I recieved the correct part, although their flywheel seems to have an internal counterweight now.
I recieved the part in the middle of this picture:
I also got the other stuff in the picture since I ordered their complete kit - Part Number RE-13120EXT
Administrator
Joined: Jul 2002
Posts: 21,958
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From: portland oregon
Originally Posted by Fanman
I have the SR Motorsports unit, got a really good deal on it, but was ready to buy the RB unit. The ACT streetlite & prolite units are quite good as well, and UR also makes a unit, and it has an integrated counterweight. Mazdaspeed's unit isn't much lighter than stock, but the weight is more centered. Overall, I think they are all good units. None of them are a quantum leap over the others.
Originally Posted by BigOLundh
Oh yes... i meant Heavy Duty, my mistake. For some reason i thought the extreme duty had the lighter load.
So yeah the 330 ft-lbs of torque specs from the heavy duty clutch should work fine.
Accordint to ACTs description, the pedal pressure level shoudn't be too much stiffer than stock, which is good to hear.
Well, sounds like ACT is getting the thumbs up. Excellent.
ScudRunner,
The ACT Flywheel is 9.9lbs + 4.5lbs for the counterweight. (total of 14.4lbs)
Racing Beat states their Flywheel is 12lbs and uses the stock counterweight. Do you know what the weight of the stock counterweight is?
Thanks for the info everyone.
-hS
So yeah the 330 ft-lbs of torque specs from the heavy duty clutch should work fine.
Accordint to ACTs description, the pedal pressure level shoudn't be too much stiffer than stock, which is good to hear.
Well, sounds like ACT is getting the thumbs up. Excellent.
ScudRunner,
The ACT Flywheel is 9.9lbs + 4.5lbs for the counterweight. (total of 14.4lbs)
Racing Beat states their Flywheel is 12lbs and uses the stock counterweight. Do you know what the weight of the stock counterweight is?
Thanks for the info everyone.
-hS
https://www.rx8club.com/showthread.p...ht#post1017535
Grey Boy
Joined: Jan 2005
Posts: 236
Likes: 7
From: Long Island, N.Y.
Guys, I just baught the MS lightweight flywheel and it seems pretty heavy. I am wondering if it is any lighter then the OEM that came with the car or if it's the same part. how can i check the part #'s to find out if they are different? The part # on the MS flywheel is OSEA-11-500A. I have not been able to find the OEM part #. Does any one know it?
Registered
Joined: Feb 2004
Posts: 2,390
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From: Lewisville, TX
Originally Posted by titaneum_grey
Guys, I just baught the MS lightweight flywheel and it seems pretty heavy. I am wondering if it is any lighter then the OEM that came with the car or if it's the same part. how can i check the part #'s to find out if they are different? The part # on the MS flywheel is OSEA-11-500A. I have not been able to find the OEM part #. Does any one know it?
The MS flywheel is 12.5lbs + a 3.6lb counterweight making it 16.1lbs. However, the mass is distributed around the center giving it a lower moment of inertia than the stock flywheel which means it will change velocity more easily.
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