Worn trans mount?
Doesn't sound like the problems you are having are caused by a bad mount. Trust me, if its broken and causing you to have trouble shifting, you'd definitely know it.
Replacing the mount is a good idea anyway though, upgrade to a polyurethane one from Energy Suspension or Prothane, it will keep the entire drivetrain in place better.
As for the grinding, there are 2 common causes. One is synchros, the other is the clutch not disengaging. Try putting the car in gear with the clutch in and see if it starts to roll forward at all. If so, the problem is the clutch. If the clutch seems fine, you probably have worn synchros/blocker rings that are causing it to grind when you shift at high RPM.
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Doesn't sound like the problems you are having are caused by a bad mount. Trust me, if its broken and causing you to have trouble shifting, you'd definitely know it.
Replacing the mount is a good idea anyway though, upgrade to a polyurethane one from Energy Suspension or Prothane, it will keep the entire drivetrain in place better.
As for the grinding, there are 2 common causes. One is synchros, the other is the clutch not disengaging. Try putting the car in gear with the clutch in and see if it starts to roll forward at all. If so, the problem is the clutch. If the clutch seems fine, you probably have worn synchros/blocker rings that are causing it to grind when you shift at high RPM.
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Before I did the drill mod the previous owner had never changed the clutch fluid and it was pitch black and chunky. This problem was worse before the drill mod and im guessing there was damage already done from the previous owner.
I was always told this transmission was great and amazing but why are the synchros and blocker rings just complete ****?
should i just start saving for a rebuild this is really starting to **** me off.
Pitch black and chunky indicates seals may have taken a dump ALONG with the fluid boiling.
I wouldn't do any more WOT shifting until you first address the fact you just may be boiling the fluid.
Doesn't drag when in gear, clutch in all the way and rpm to 6k BUT will seem to lock out gears during a WOT run?
Boiling fluid would do that.
Before tearing into transmission internals, insulate the line and make sure at no point it is close to the headers. Bleed well.
Next in difficulty is to change the master (which requires to redo the drill mod).
Then finally slave and may as well do clutch at that point too.
What exactly can i insulate the line with?
Is there any way exactly to test this? could i try a WOT shift before the car warms up and before the fluid gets hot?



