997gt3north

Is this part of the cure?
Haven't heard anyone using this yet.

M3EvoBR

Helps a lot ...

or

Nizer

Yup. And both will transmit more noise but I suspect this one is a little quieter than the GMG mount based bushing material.

tcsracing1

i have not noticed any additional cabin noise from Cup shifter cables? what would cause aditional sound?

M3EvoBR

I've installed a few of them, and to be honest the noise comes from the Cup cables and shifter, but that combo, makes shifting a much better experience.

Of course the transmission temps is another problem that needs to be addressed, as the shifting gets worse and worse over higher temps.

Nizer

THANK YOU!! I've suspected this for a long time but haven't been able to confirm. Same issue on 996 Cups. I'm told you can put a cooler on to help address the problem.

tasman

It seems to me upgrading transmission mounts would have a greater effect than changing engine mounts. Have people found this to be true. If you change the transmission mounts how much does the noise go up? I am so far only having occasional difficulty with 2-3 shifts while tracking.

M3EvoBR

The problem exists, period.
First step we need to monitor temps and see how long it takes, and how hot it gets, next step address the problem, either with additives like friction reducer (there is a product not yet available for public use that is proven to work) or in a higher level, a transmission cooler.

M3EvoBR

Remember the engine and transmisson are one piece once in the car, need both to reduce mass roll and movement.
Not significant the amount of noise transmitted to the cabin.
Is a lot less than cup at shifter and cables.

DC640

I thought it was just me who couldnt get into 3-2 downshift. Sometimes it just wouldnt go in smd i felt like i was trying to jam it in. So i took some turns on neutral only happened 2-3 times out of 5 session day.

tasman

I actually have more of a problem going from 2 to 3 in one particular turn at Road America. Would just not go into gear (no grinding or anything). Would just have to hesitate a second and then slipped right in. Did not do it every time either. Downshift has not been a problem (yet).

Matrog

"Pedals: The OE pedal arrangement made it very difficult for me to execute proper down-shifts"

Can you elaborate on what is required to lower the height of the brake pedal ?

I completely agree the height differential w/ the gas pedal is too much for heel-toe.

Many thanks,
Matthew

Jamie_GT3

I spoke with Matt at Guard about this particular issue. He said the problem is the stock LSD in the GT3/RS for .1 and .2 are never completely locked and create enormous heat in the the tranny... He said all of the racing programs he works with use the stock tranny cooler but a much upgraded LSD and their tranny fluid doesn't burn like ours does...

So, to that end I think the first upgrade path is a LSD upgrade, then if you're still seeing black tranny fluid and short fluid exchange intervals, we look into addressing the problem with some data analysis and an uprated oil cooler...

M3EvoBR

Jamie knows his stuff ...

paver

I used to think the same thing and put a throttle pedal extension on. Had it up as high as it would go in fact. But when I started getting faster on track and using the brakes more to their potential I lowered it back to the level of the stock pedal. May not even need it at all now.