Lightweight Flywheel MT
#1
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Thread Starter
Lightweight Flywheel MT
I am curious if anyone here has done a lightweight flywheel on their 7sp manual?
I heard about horror stories where the lighter flywheel threw off the harmonics on the motor and killed it.
Toying around with the idea of going this route when I need a new clutch.
https://www.fvd.net/us-en/FVD1140120221/lightweight-flywheel-9972-all-9911-c2s-c4s-with-release-brg.html
I heard about horror stories where the lighter flywheel threw off the harmonics on the motor and killed it.
Toying around with the idea of going this route when I need a new clutch.
https://www.fvd.net/us-en/FVD1140120221/lightweight-flywheel-9972-all-9911-c2s-c4s-with-release-brg.html
#4
The flywheel is already so light, why do you need even lighter than stock?
there is no rev hang, the engine basically rev’s freely…
a lighter flywheel will make starting from a stop harder as well.
‘Matt Farrah had lots of issues in his gt3 test drive:
there is no rev hang, the engine basically rev’s freely…
a lighter flywheel will make starting from a stop harder as well.
‘Matt Farrah had lots of issues in his gt3 test drive:
Last edited by Rapter; 03-22-2022 at 08:39 PM.
#5
Rennlist Member
BTW, Kudos to FVD for such an obvious and clear "Note":
Please Note:Installing a lightweight flywheel can cause light gear chatter. If you are ok with a louder exhaust, greater intake noise or more mechanical sounds, then this should not bother you. If you must chase down every rattle or squeak, then this may not be the right modification for you.
No one can claim they weren't forewarned
Good job FVD
Please Note:Installing a lightweight flywheel can cause light gear chatter. If you are ok with a louder exhaust, greater intake noise or more mechanical sounds, then this should not bother you. If you must chase down every rattle or squeak, then this may not be the right modification for you.
No one can claim they weren't forewarned
Good job FVD
#6
Rennlist Member
Thread Starter
The only 991 that has an oem single mass flywheel to my knowledge is the 911R
#7
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After listening to an engineer speak on this subject, I would not install a LWF in a 991 or 992 that didn't come with one (i.e. 991R). The gist: "You'll absolutely love it when you drive away from the shop, but you won't love the second bill a little later."
The good news is I don't find the 3.0 7MT bad at all.
The good news is I don't find the 3.0 7MT bad at all.
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911T4ME (06-03-2024)
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#8
When I start thinking, as tonight about headers for my 991.2 S, it brings me back to the fact that Porsche has an army of engineers that seem to know what they're doing and put out a product that we all like, a lot.
Sometimes it takes an effort not to meddle with things, seems a lightweight flywheel is one of them, another is replacing my PSE.
Save your mod money for driving schools like I did.
Sometimes it takes an effort not to meddle with things, seems a lightweight flywheel is one of them, another is replacing my PSE.
Save your mod money for driving schools like I did.
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supercroc (09-17-2024)
#9
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Thread Starter
When I start thinking, as tonight about headers for my 991.2 S, it brings me back to the fact that Porsche has an army of engineers that seem to know what they're doing and put out a product that we all like, a lot.
Sometimes it takes an effort not to meddle with things, seems a lightweight flywheel is one of them, another is replacing my PSE.
Save your mod money for driving schools like I did.
Sometimes it takes an effort not to meddle with things, seems a lightweight flywheel is one of them, another is replacing my PSE.
Save your mod money for driving schools like I did.
Last edited by Joec500; 03-23-2022 at 02:25 AM.
#10
I would advise strongly against this for street use . I put an RS flywheel on my 964 and it ruined the driveability of the car. It was a lot faster but the juice was not worth the squeeze.
Now 35HP for headers and a tune at 3K, thats is a pretty easy choice and a yes as it is not changing their engineering it is merely making the car faster by skirting the EPA regulations Porsche had to follow as a manufacturer. Living in the Flor-i-duh we have no state inspections to worry about and really if a car has 4 wheels it is considered safe here. On a side note, in Florida good insurance is key.
Now 35HP for headers and a tune at 3K, thats is a pretty easy choice and a yes as it is not changing their engineering it is merely making the car faster by skirting the EPA regulations Porsche had to follow as a manufacturer. Living in the Flor-i-duh we have no state inspections to worry about and really if a car has 4 wheels it is considered safe here. On a side note, in Florida good insurance is key.
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desmotesta (03-23-2022)
#11
991.2's have an integrated dual mass flywheel with a centrifugal pendulum for both PDK and manual. 991.2's also moved to a double plate clutch. Integration of the Turbo gear set and ring gear/pinion shaft with shorter constant ratio in 991 PDK and Carbon synchronizers adopted from 991 Turbo.
Seems to be a bit of a different animal then the 991.1. From what I can tell 991.1 Carrera cars were closer in kin to the 997.2 Carrera cars where the 991.2 adopted more stuff from the Turbo family (by model designation) when it comes to driveline durability. Fine by me given how well its held up for the Turbo folks and they are dealing with 100-150 additional ponies and torque.
Seems to be a bit of a different animal then the 991.1. From what I can tell 991.1 Carrera cars were closer in kin to the 997.2 Carrera cars where the 991.2 adopted more stuff from the Turbo family (by model designation) when it comes to driveline durability. Fine by me given how well its held up for the Turbo folks and they are dealing with 100-150 additional ponies and torque.
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AdamSanta85 (03-24-2022)
#12
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Thread Starter
991.2's have an integrated dual mass flywheel with a centrifugal pendulum for both PDK and manual. 991.2's also moved to a double plate clutch. Integration of the Turbo gear set and ring gear/pinion shaft with shorter constant ratio in 991 PDK and Carbon synchronizers adopted from 991 Turbo.
Seems to be a bit of a different animal then the 991.1. From what I can tell 991.1 Carrera cars were closer in kin to the 997.2 Carrera cars where the 991.2 adopted more stuff from the Turbo family (by model designation) when it comes to driveline durability. Fine by me given how well its held up for the Turbo folks and they are dealing with 100-150 additional ponies and torque.
Seems to be a bit of a different animal then the 991.1. From what I can tell 991.1 Carrera cars were closer in kin to the 997.2 Carrera cars where the 991.2 adopted more stuff from the Turbo family (by model designation) when it comes to driveline durability. Fine by me given how well its held up for the Turbo folks and they are dealing with 100-150 additional ponies and torque.
#13
Well there are ALWAYS compromises for the masses, most folks on the forums don't fall under the bell curve and are willing to take a louder, rougher riding car etc for performance and visceral feel. The engineers DID NOT engineer our cars for maximum performance, but built in durability, and general NVH for their main target demographic. To your point I also invest in driving instruction and track days A more responsive motor sounds like fun, these are toys after all.
Do think they have a balance of reliability, longevity and performance in mind when they work through their design and manufacture. As well as making a tidy profit, that is a given.
However, you have personal choice, spend on what makes you happy.
#14
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Thread Starter
Don't think that Porsche designs and engineers their cars for the masses. We are the relatively small number of lucky ones with the ability to indulge.
Do think they have a balance of reliability, longevity and performance in mind when they work through their design and manufacture. As well as making a tidy profit, that is a given.
However, you have personal choice, spend on what makes you happy.
Do think they have a balance of reliability, longevity and performance in mind when they work through their design and manufacture. As well as making a tidy profit, that is a given.
However, you have personal choice, spend on what makes you happy.
But to say they optimize for 100% pure performance on really any cars but perhaps the GT level trims and cup cars, no way. I bet if you rode in my car you would HATE it with the monoballs in my suspension, metal shift cables and full exhaust and headers. I just wanted to see if anyone her ACTUALLY installed a lightweight flywheel versus experiences from other cars or "theories" that Porsche engineers maximized performance.
#15
Actually the 992
Feels to me like it was designed for the masses and is the first miss in 911 history. The interior is completely busy with 3 of everything in the wrong place with a quirky mix of ***** toggles and buttons. It reminds me of a girl wearing too much makeup, sad. There is no drama only speed. I preferred the driving experience of the Taycan, it felt more "true".
Don't think that Porsche designs and engineers their cars for the masses. We are the relatively small number of lucky ones with the ability to indulge.Do think they have a balance of reliability, longevity and performance in mind when they work through their design and manufacture. As well as making a tidy profit, that is a given. However, you have personal choice, spend on what makes you happy.