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Single mass flywheel upgrade on 997.1 GT3 - is it worth it? - Page 1 - 911/Carrera GT - PistonHeads UK

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YOUR RESEARCHSingle mass flywheel upgrade on 997.1 GT3 - is it worth it? - Page 1 - 911/Carrera GT - PistonHeads UK

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Use car enthusiastically and am interested

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Performed · outcome unconfirmed · Original poster
Thanks both, I use the car enthusiastically and am interested to know why the upgrade is worth it for track day use?
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Single mass flywheel upgrade on 997.1 GT3 - is it worth it? - Page 1 - 911/Carrera GT - PistonHeads UK

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Run single mass flywheels

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Suggestion
All the cranks that break are running single mass flywheels?
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Single mass flywheel upgrade on 997.1 GT3 - is it worth it? - Page 1 - 911/Carrera GT - PistonHeads UK

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Leading evidence: 'Use car enthusiastically and am interested' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Run single mass flywheels' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

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Run single mass flywheels

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Suggestion
All the cranks that break are running single mass flywheels?
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Single mass flywheel upgrade on 997.1 GT3 - is it worth it? - Page 1 - 911/Carrera GT - PistonHeads UK

Use because you sacrifice some low revs drivability

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Suggestion
Hi Simon, they are better for track use because you sacrifice some low revs drivability to gain a freer revving engine.
Original post Read captured discussion
Single mass flywheel upgrade on 997.1 GT3 - is it worth it? - Page 1 - 911/Carrera GT - PistonHeads UK

Use car

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Suggestion
How do you use the car.
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Single mass flywheel upgrade on 997.1 GT3 - is it worth it? - Page 1 - 911/Carrera GT - PistonHeads UK

Use motorsport item

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Suggestion
remember to upgrade the pulley if you are using the motorsport item.
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Single mass flywheel upgrade on 997.1 GT3 - is it worth it? - Page 1 - 911/Carrera GT - PistonHeads UK

Frequently discussed actions (5)

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Run single mass flywheels

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Suggestion
All the cranks that break are running single mass flywheels?
Original post Read captured discussion
Single mass flywheel upgrade on 997.1 GT3 - is it worth it? - Page 1 - 911/Carrera GT - PistonHeads UK

Use because you sacrifice some low revs drivability

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Suggestion
Hi Simon, they are better for track use because you sacrifice some low revs drivability to gain a freer revving engine.
Original post Read captured discussion
Single mass flywheel upgrade on 997.1 GT3 - is it worth it? - Page 1 - 911/Carrera GT - PistonHeads UK

Use car

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Suggestion
How do you use the car.
Original post Read captured discussion
Single mass flywheel upgrade on 997.1 GT3 - is it worth it? - Page 1 - 911/Carrera GT - PistonHeads UK

Use car enthusiastically and am interested

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Discussions that performed work without a confirmed outcome: 1

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Performed · outcome unconfirmed · Original poster
Thanks both, I use the car enthusiastically and am interested to know why the upgrade is worth it for track day use?
Original post Read captured discussion
Single mass flywheel upgrade on 997.1 GT3 - is it worth it? - Page 1 - 911/Carrera GT - PistonHeads UK

Use motorsport item

No successful repair reported for this finding.

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Reported fixes: 0
Unsuccessful attempts: 1
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Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

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Suggestion
remember to upgrade the pulley if you are using the motorsport item.
Original post Read captured discussion
Single mass flywheel upgrade on 997.1 GT3 - is it worth it? - Page 1 - 911/Carrera GT - PistonHeads UK

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10 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

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POST 1 / ORIGINAL POSTEROriginal post

Hi all, I am having the clutch replaced on my GT3 and am weighing up the not inconsiderable cost to upgrade the flywheel to a single mass... Has anyone done so and able to provide me with opinion on whether it's a worthwhile investment and any downsides - I've heard it makes the gearbox a little noisier at lower rpm and particularly at idle. Cheers Simon

POST 2Original post

How do you use the car. Mines more of a track toy, so doing the fly wheel made sense. If its mainly a road car I wouldn't bother personally.

POST 3Original post

what flywheel are you using. aasco or porsche motorsport? remember to upgrade the pulley if you are using the motorsport item. light flywheel is very exciting and does transform the feel although i don't know if it ends up being faster.

POST 4 / ORIGINAL POSTEROriginal post

Thanks both, I use the car enthusiastically and am interested to know why the upgrade is worth it for track day use? Cheers Simon

POST 5Original post

Hi Simon, they are better for track use because you sacrifice some low revs drivability to gain a freer revving engine. Because the flywheel weighs less there is less inertia on the crank to keep the engine turning over, hence sometimes the car may stall and you need more revs to pull away from a standstill. I have a 996 with one and I love it. Summer drives only and no sitting in traffic. The revs climb and drop so quickly and the response is razor sharp. I'd definitely recommend one unless you use the car as a daily and sit in queues of traffic a lot.

POST 6 / ORIGINAL POSTEROriginal post

thanks Mark, That's good to know and I don't use the car as a daily and try to avoid traffic! Cheers Simon

POST 7Original post

Other than the pulley, are any engine mods required? I'm wondering if the non-RS engines are balanced with a dual-mass flywheel in mind?

POST 8Original post

Read this http://forums.rennlist.com/rennforums/997-gt2-gt3-... More of an issue with the bigger capacity engines, but makes you think.

POST 9Original post

Cunno said: Read this http://forums.rennlist.com/rennforums/997-gt2-gt3-... More of an issue with the bigger capacity engines, but makes you think. Yipes! Any experts care to comment on this?

POST 10Original post

you won't find a definitive answer unfortunately... Not many cranks break All the cranks that break are running single mass flywheels? Bert

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