Primitive's LW Flywheel
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Primitive's LW Flywheel
Anyone running or know anyone that is running Primitive's machined LW flywheel. I'm debating whether on getting his flywheel or an exedy one.
I've seen conflicting literature that the exedy is 12.5 lbs and/or 14 lbs.
I'd prefer to stay around the 14lbs range.
I've seen conflicting literature that the exedy is 12.5 lbs and/or 14 lbs.
I'd prefer to stay around the 14lbs range.
Josh
surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT
If you need to get a hold of me please email me rather then pm
surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT
If you need to get a hold of me please email me rather then pm
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I REALLY like my Exedy. The car drives insanely well. 14 pounds is the official weight on the exedy.
2009 Outback 2.5XT. 5MT. Satin White Pearl.
2009 Impreza 2.5i Premium. Blue.
[quote="scottzg"]...I'm not a fan of the vagina...[/quote][quote="evolutionmovement"]This will all go much easier if people stop doubting me.[/quote]
2009 Impreza 2.5i Premium. Blue.
[quote="scottzg"]...I'm not a fan of the vagina...[/quote][quote="evolutionmovement"]This will all go much easier if people stop doubting me.[/quote]
hmmm......I'm not really worried about the fact primitive's LW flywheel. The thing i have to look into now is material.
One is cast iron, and one is chromoly. Cast iron I believe disapates heat better, and I'm goin to try and check on the other properties as well.
One is cast iron, and one is chromoly. Cast iron I believe disapates heat better, and I'm goin to try and check on the other properties as well.
Josh
surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT
If you need to get a hold of me please email me rather then pm
surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT
If you need to get a hold of me please email me rather then pm
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I don't know.....if the numbers are close, probably not.....about the only thing I could think of is possibly how quick clutch disk material builds up on the chromoly fw vs. the iron.
Josh
surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT
If you need to get a hold of me please email me rather then pm
surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT
If you need to get a hold of me please email me rather then pm
Josh, I think you are trying to get a little too deep into things with the parts you choose. I understand you want to make the best informed decision possible. But it's very hard to decompile ALL the engineering decisions that go into a product.
I wouldn't want a lightened flywheel just because of what has been done to the metal. With material removed there is all kinds of cuts through the cellular structure. I'm trying to remember what I learned in my metals class. It's always better to have something formed to the correct shape rather than cut it to get there, that's why forged stuff is the best.
Exedy is the best. It's what the engineers at Subaru Technica International decided to use, that's good enough for me. They have to choose the best stuff or their butts can get sued off. They also don't massive price cut because they do the "limited" models.
If you want to try Primitive, go for it. If they rally their flywheel and it holds up, good, no worries. Exedy has also been shown to hold up through extensive use, also. How does that saying go... don't try to reinvent the wheel? Ok, friendly advice post done.
I wouldn't want a lightened flywheel just because of what has been done to the metal. With material removed there is all kinds of cuts through the cellular structure. I'm trying to remember what I learned in my metals class. It's always better to have something formed to the correct shape rather than cut it to get there, that's why forged stuff is the best.
Exedy is the best. It's what the engineers at Subaru Technica International decided to use, that's good enough for me. They have to choose the best stuff or their butts can get sued off. They also don't massive price cut because they do the "limited" models.
If you want to try Primitive, go for it. If they rally their flywheel and it holds up, good, no worries. Exedy has also been shown to hold up through extensive use, also. How does that saying go... don't try to reinvent the wheel? Ok, friendly advice post done.

1993 WMP BC6 5MT EJ22T 9psi 3.9:1 213k 205/55R16
62.6 m/s @ 0.66 bar. Gotta love boost. :)
62.6 m/s @ 0.66 bar. Gotta love boost. :)
I know....I know.....I'm hoping to have made a decision by the weekend.....I'll let ya know what I decide.
Josh
surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT
If you need to get a hold of me please email me rather then pm
surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT
If you need to get a hold of me please email me rather then pm
what type of FW is this?mTk wrote:So long as this doesn't happen to your lightened flywheel:
http://mtk.darkwire.com/flywheel/
MK
Josh
surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT
If you need to get a hold of me please email me rather then pm
surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT
If you need to get a hold of me please email me rather then pm
It is a lightened Honda flywheel. However before jumping to standard Honda conclusions, it was done professionally by a reputable Honda shop (If only i could find the original post).
Granted most honda engines rev far beyond what Subaru owners can dream of, it still shows what even the most minute error in lightening can do.
MK
Granted most honda engines rev far beyond what Subaru owners can dream of, it still shows what even the most minute error in lightening can do.
MK
1992 BC672 AWD 5MT
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Blast Shields.Brat4by4 wrote:Yep, those things have severed peoples legs off before. That's why some drag racing places require a special cage to contain anything that might grenade in your tranny. Can't think of the name, danggit.
The Exedy flywheel is rated to 14,000 RPM or something.
2009 Outback 2.5XT. 5MT. Satin White Pearl.
2009 Impreza 2.5i Premium. Blue.
[quote="scottzg"]...I'm not a fan of the vagina...[/quote][quote="evolutionmovement"]This will all go much easier if people stop doubting me.[/quote]
2009 Impreza 2.5i Premium. Blue.
[quote="scottzg"]...I'm not a fan of the vagina...[/quote][quote="evolutionmovement"]This will all go much easier if people stop doubting me.[/quote]