I had a trans built locally with all Jake's parts , and the D3 brake. When I get on the brake and get the car up in the RPMs it starts to roll forward. I am using the trans brake out of 3rd gear if that matters at all.

I have never had a car with a trans brake, but from my understanding it shouldn't move at all while the trans brake is activated. The trans is electronically controlled by the computer in the car, so is there something that needs to be done in the tune? Or should I have the trans looked at by the shop who put it together?

Thanks,
Ryan

 

Max the line Pressure when using the transbrake. In tune or by cutout on EPC wire.

 

Any update to this? I still have not got mine working.

 

Having installed a D3 myself, while doing the rebuild my reverse drum needed machined flat, and along with that, it's important the reverse piston rod is the proper length to have the correct slack. Mine needed welded on to get the free play needed as per instructions

Just one idea here

 

Sold the d3, bought a better brake with better customer service.

 

What new brake did you get?

 

Oh damn

 

I'm curious too. My D3 so far has been flawless and my experience with Jakes so far is great.