C4 Transmission issue

[Bill Harris]

There are a few things that affect the flare including which valve body you have (who modified it to full-manual) and which intermediate band servo you are using. There a quite a few different servos that have various apply and release piston areas and accumulator volumes which affect the timing of the band release. The adjustment on the band has a little effect, but it is a fine tuning compared to the hydraulic circuit variables. You should never have a flare on the 1-2. Second gear is the intermediate band applying to stop the direct clutch drum. You might get a slow or sloppy second gear shift, but unless the forward clutch is slipping it shouldn't ever flare.

[HawkBrosMav]

Originally Posted by Bill Harris

There are a few things that affect the flare including which valve body you have (who modified it to full-manual) and which intermediate band servo you are using. There a quite a few different servos that have various apply and release piston areas and accumulator volumes which affect the timing of the band release. The adjustment on the band has a little effect, but it is a fine tuning compared to the hydraulic circuit variables. You should never have a flare on the 1-2. Second gear is the intermediate band applying to stop the direct clutch drum. You might get a slow or sloppy second gear shift, but unless the forward clutch is slipping it shouldn't ever flare.

We installed the kit to make it a manual valve body. Never had a flare until the trans was disassembled to swap 1st gear ratio. Valve body was not touched during this process.

What should we be looking at in terms of Servo/Band combo or adjustment to correct said issue. The shift is by no mean sloppy or mushy.. driving through the pits it a nice firm solid shift, but on track it's simply a flare.. no burning of fluid or anything all we're noticing is the rpm flash. not sure we are even losing ET as fast as it happens just seems like something we should be able to eliminate.