Lighter Flywheel
some discussions just won't die .
02-14-2007, 10:23 PM
#52
Originally Posted by Fanman
ACT is THE company in that area (clutch & flywheel). Can't go wrong. I have seen the RB flywheel for $455. If you can get the ACT for $250-$300 I would say go for it. ACT is to clutches, what Brembo is to brakes. I was looking quite a bit at their clutches, but wound up getting a Centerforce unit from Mazdatrix, as the other vendors could not get the part to me in time.
How is the Centerforce clutch treating you Fanman?
When it is time to replace will you stay with them?
02-14-2007, 10:50 PM
#53
Originally Posted by Charles R. Hill
Brettus, what I find humorous about that particular discussion is that when one examines the different aftermarket/lightweight flywheels available that the greatest amount of mass is centered behind the friction plate, for obvious reasons. So, to a greater or lesser degree, flywheels of similar weight will tend to have similar moments of inertia, regardless of material. At least , the wheels are close enough that it is a matter not worth arguing about. Then again, everyone wants to be the smartest, most well-informed, person on the forum.
AKA(Charles Hill)
02-15-2007, 12:40 AM
#54
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Originally Posted by Charles R. Hill
LilBenny, a lighter flywheel DOES help reduce 1/4 mile times. My SR 9.75 lb. wheel cut .3-.4s off my times. There are too many physicists/engineers on this forum and not enough racers and users of these parts we are always talking about.
02-15-2007, 12:48 AM
#55
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Originally Posted by 4 years to Supercharge
How is the Centerforce clutch treating you Fanman?
When it is time to replace will you stay with them?
When it is time to replace will you stay with them?
02-16-2007, 03:46 AM
#59
For the Centerforce clutch, the weights on the pressure plate are designed to lessen the pedal pressure while keeping the even pressure on the flywheel. Sounds like it does a good job.
Thanks Fanman!
As a fan of Unorthodox Racing,
I have been tempted to get their flywheel. Like the stock flywheel the counterweight is built in. (The Mazdaspeed utilizes a separate counterweight and I hope they added the weight of that).
RX Tuner weighed the three (although the MS wheel was used that they took off the car):
Stock 17lbs; MS 15.5 lbs; UR 14 lbs.
http://www.rxtuner.com/farticles/Uno...andPullies.pdf
Like most that get an aftermarket flywheel say, "I wish it could be seen after it is installed."
Thanks Fanman!
As a fan of Unorthodox Racing,
I have been tempted to get their flywheel. Like the stock flywheel the counterweight is built in. (The Mazdaspeed utilizes a separate counterweight and I hope they added the weight of that). RX Tuner weighed the three (although the MS wheel was used that they took off the car):
Stock 17lbs; MS 15.5 lbs; UR 14 lbs.
http://www.rxtuner.com/farticles/Uno...andPullies.pdf
Like most that get an aftermarket flywheel say, "I wish it could be seen after it is installed."
Last edited by BoosTED; 02-18-2007 at 02:55 PM.
02-16-2007, 04:33 AM
#60
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Originally Posted by 4 years to Supercharge
...Like the Mazdaspeed and stock flywheel the counterweight is built in...
and I think the stock flywheel was a bit heavier than 17lbs when I weigh it...
02-16-2007, 04:37 AM
#61
Originally Posted by RotorManiac
no, the MS flywheel doesn't have the counterweight built in.... seperate parts...
and I think the stock flywheel was a bit heavier than 17lbs when I weigh it...
and I think the stock flywheel was a bit heavier than 17lbs when I weigh it...
the ms flywheel does have the counterweight built in..
beers
02-16-2007, 07:56 AM
#62
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Originally Posted by Fanman
It's good. Richard paul drove my car once, and he remarked how light it was, but according to Mazdatrix it is good to 400+ lb.-ft. of tq. Have had it on now for probably over 10,000+ miles and it still runs like a champ. I have heard that the ACT is quite a bit stiffer than mine. If that is true, then I am inclined to stay with the Centerforce.
Which Centerforce are you using ?? Centerforce II ??
02-16-2007, 02:32 PM
#63
Originally Posted by RotorManiac
no, the MS flywheel doesn't have the counterweight built in.... seperate parts...
and I think the stock flywheel was a bit heavier than 17lbs when I weigh it...
and I think the stock flywheel was a bit heavier than 17lbs when I weigh it...
02-16-2007, 03:11 PM
#64
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Originally Posted by phartknauker
Which Centerforce are you using ?? Centerforce II ??
02-17-2007, 09:13 PM
#66
Originally Posted by RotorManiac
are you sure swoope?
yes,
i am completely sure you are right and i am wrong!!!!!
http://www.finishlineperformance.com...key=RX08MS1011
sorry, and i cant believe that the mazdaspeed uses a external counterweight..
beers
02-18-2007, 10:12 PM
#70
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let me help you all with the MS flywheel. I think I qualify as 'experienced' since I have my car for 3 years now and its equipped with this flywheel for almost 2 years...
charles, you are quite right with your point of view, its basically down to what you want, but the MS flywheel is a good step forward. you feel the difference straight away. I'm not sure, but I think its chromoly-made too. add to that, the fact that its edges look like bullet holes from an AK47 and you get the picture...
so why did I choose it? cuz back then no one was really sure what's right or wrong. first time doing this mod, I wanted the drivability of my car to stay stock-like, and it did. in my country no dealer had ever dropped a tranny in an 8 before
so I didn't want implications. I'd recommend it to anyone who is not so hardcore-minded in modding his car.
Would I buy it again? yes, because its good, very strong and does the job, but in the end, no, because its just me and I like to test products and I keep modding my car. I'd go for a more extreme solution this time for sure! the ACT!
for the record, it weighs 15.3 with the counterweight, which is about 1.6kg or 3.5pounds. the disc is about 11.8pounds, which is the weight many tuners announce for their products, while they need the counterweight to be functional... one needs to pay attention to this detail...
no problem guys, that's why we are all here, to discuss interesting points. goes to swoopy too beers lads
as for the weight of the stock flywheel, you might be right. I will try to weight it again... I swear when I lifted it, it felt like it was 30pounds or so compaired to the ms. strange, indeed....
charles, you are quite right with your point of view, its basically down to what you want, but the MS flywheel is a good step forward. you feel the difference straight away. I'm not sure, but I think its chromoly-made too. add to that, the fact that its edges look like bullet holes from an AK47 and you get the picture...
so why did I choose it? cuz back then no one was really sure what's right or wrong. first time doing this mod, I wanted the drivability of my car to stay stock-like, and it did. in my country no dealer had ever dropped a tranny in an 8 before
so I didn't want implications. I'd recommend it to anyone who is not so hardcore-minded in modding his car.Would I buy it again? yes, because its good, very strong and does the job, but in the end, no, because its just me and I like to test products and I keep modding my car. I'd go for a more extreme solution this time for sure! the ACT!
for the record, it weighs 15.3 with the counterweight, which is about 1.6kg or 3.5pounds. the disc is about 11.8pounds, which is the weight many tuners announce for their products, while they need the counterweight to be functional... one needs to pay attention to this detail...
Originally Posted by 4 years to Supercharge
Thanks for correcting me RotorManiac.
beers lads as for the weight of the stock flywheel, you might be right. I will try to weight it again... I swear when I lifted it, it felt like it was 30pounds or so compaired to the ms. strange, indeed....
02-19-2007, 05:23 AM
#71
Thanks for the assurance Charles. I felt the same when I drove one of the guys cars with the MS flywheel not hard to adjust to at all.
With counterweight it is 13.25 lbs?
SR is one that claims that there are some that are too light.
The ACT prolight is the lightest I have seen.
SR's scales must be reading heavy:
Available in our 11.25 pound design for the 2004-2007 Mazda RX-8. Our flywheels are fully rebuildable, not like disposable steel and chrome moly flywheels which cannot be rebuilt*** We have all rebuild parts in stock, see below. These lightweight 6061 T6 billet SR Motorsports aluminum flywheels are designed to for the street, track or dragrace Mazda RX-8. They free up horsepower by reducing power robbing rotating mass. (The 8 to 9 pound racing flywheels that our competitors offer are too light for a Mazda RX-8 .Too hard to drive without slipping the clutch too much) The stock flywheels are 23 pounds! Shifting is quick and sure due to the lightweight aluminum billet design. Longer transmission life can also be expected. The high carbon steel content of the replaceable bolt-on heat shield material helps to absorb heat and reduce the temperature of the mating parts. ***SR flywheels come with custom stepped dowels that cannot ever come loose, or fall out ***
MazdaSpeed Flywheel
With the addition of this 18# Mazdaspeed flywheel, your RX-8 will have an increase in acceleration. Very streetable.***See below for needed counterweight and install hardware kit**
I know that the stock flywheel weighs really close to 17 pounds (within a quarter of a pound).
With counterweight it is 13.25 lbs?
SR is one that claims that there are some that are too light.
The ACT prolight is the lightest I have seen.
SR's scales must be reading heavy:
Available in our 11.25 pound design for the 2004-2007 Mazda RX-8. Our flywheels are fully rebuildable, not like disposable steel and chrome moly flywheels which cannot be rebuilt*** We have all rebuild parts in stock, see below. These lightweight 6061 T6 billet SR Motorsports aluminum flywheels are designed to for the street, track or dragrace Mazda RX-8. They free up horsepower by reducing power robbing rotating mass. (The 8 to 9 pound racing flywheels that our competitors offer are too light for a Mazda RX-8 .Too hard to drive without slipping the clutch too much) The stock flywheels are 23 pounds! Shifting is quick and sure due to the lightweight aluminum billet design. Longer transmission life can also be expected. The high carbon steel content of the replaceable bolt-on heat shield material helps to absorb heat and reduce the temperature of the mating parts. ***SR flywheels come with custom stepped dowels that cannot ever come loose, or fall out ***
MazdaSpeed Flywheel
With the addition of this 18# Mazdaspeed flywheel, your RX-8 will have an increase in acceleration. Very streetable.***See below for needed counterweight and install hardware kit**
I know that the stock flywheel weighs really close to 17 pounds (within a quarter of a pound).
02-22-2007, 11:48 AM
#74
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^so when will you have that titanium ppf ready charles?
oh, and by the way, 4 years to Supercharge:
the stock my flywheel is 7.6kg so I guess you were right all the way (about 17lbs)
oh, and by the way, 4 years to Supercharge:
the stock my flywheel is 7.6kg so I guess you were right all the way
(about 17lbs)
07-20-2009, 02:31 AM
#75
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please dont forget a 54mm or a 2 1/8 socket lol u gonna need it for the neptune size nut thats holding the flywheel .. and if you dont have a 3/4 impact gun invite a couple of friends to jump with u on the breaker bar ,, have fun
btw u dont need to buy a flywheel puller i got it out just fine with two pry bars stud bolts and a 300 pound friend ,, no really u dont need it ,, good luck
btw u dont need to buy a flywheel puller i got it out just fine with two pry bars stud bolts and a 300 pound friend ,, no really u dont need it ,, good luck
Last edited by caterpillarking; 07-20-2009 at 02:37 AM.