Please explain to me what this mod accomplishes. I am looking at few slightly used GT3's with GT3 RS flywheels.

thanks for helping out a noob.....

 

slightly quicker accelleration due to less rotating mass...easier rev matching if you are a tracker...lots more gear noise when left in neutral...may cause loss of front pulley if not changed to RS pulley at same time...Porsche has refused to honor some engine warranties because the lightweight flywheel is not balanced with the engine rotating assembly like the dual mass flywheel is but many have been installed on 996 GT3s without any problems

 

car feels as it should

 

sorry I should have been more clear. This is 997 GT3 -
I guess my question is this - Why would anyone want this mod done if they are going to drive on the street 98% of the time?
Quicker acceleration is good but more gear noise is not what I want for a daily driver
Is it imperative that the pulley must be a 997 RS pulley if matched up to a RS flywheel in a regular 997 GT3?
Would this be a deal killer if you were looking for a -5k mile GT3 that is going to be a street car?

thanks for all the advice from you seasoned GT3ers...

 

a stock gt3 is more than enough for the street. i wouldn't change the stock dual-mass fw if i was not tracking the car.

i've heard some stories of bolts coming loose from nonrs pulleys when mated with rs lwfw. so when i had my dmfw removed for rs lwfw, i made certain to also change out the pulley with the rs one. i've had 2yrs and over 10k miles and so far no issues.

it would not be a deal breaker for me if i'm buying a car that already have it. it is an upgrade imo. but again, if i was not tracking the car, i wouldn't do this mod. it's rather pointless. but if the car already have it, then it's a bonus.

 

most of the pullys that were lost were on 997's that had the lightweight flywheel put in without the RS pully..there are also some tricks like loctite on the pully bolt that help

 

Please don't take this wrong way, but if you are 98% street, wouldn't a GT3 be the wrong car for your needs? It is a rougher ride, and it is noisy.

I have a LWFW in my C2S, and it rattles a little more when sitting at a traffic light, but other then that it is great.

 

I drive my GT3 on the street everyday......I think it is the ultimate daily driver.

I do not uinderstand why anyone would buy a new 997.2 base Carerra when you can get a garage queen 997.1 GT3 with low miles for the same price.

I do not have a dual mass flywheel.....like the stock and under warranty approach

 

speedoflight is spot on IMHO
just make sure the one you are looking at has the rs pulley or has it added upon purchase etc.

I prefer the lwfw and the noise does not bother me a bit... i can barely hear it over my exhaust

 

I have the stock flywheel on 997.1 GT3. Not a deal breaker in any way for me.
A CPO of one of these cars is a sweet scenario IMO.

 

+1 !! been there, and bought the Tshirt!!

 

Thanks Guys - what is ironic to me is the several low mileage -5k mile Gt3s that have the LWFW from a are being sold as non -track cars....
I need to see if the noise is ridiculous or tolerable for the street. Thanks for the advice especially on matched up RS pulleys w/ the LWFW

 

I have the lightweight flywheel, (as well as most everything else Alex could put on the car) and I drive it every day on the street. I have 18,000 miles on my 997 GT3, and the reliability has been terrific. As to the noise, it doesn't bother me at all, and it adds to the personality at a stoplight.

 

The noise is no big deal. It just clatters and chatters (sounds like something is loose) when you're sitting at idle and not moving. Sometimes I have passengers ask me what's wrong with the car when they hear it, but other than that it's no drama. It's quiet and not intrusive.

 

I had a LWFW in my 6GT3 and a shorter R&P (4:00), but I don't have one in my 7GT3 with the same R&P. I prefer not having the LWFW on the street.