Thread: TD6 tune chip or not

You can either adjust your neutral height using a tool like the Gap iiD tool or buy an L405.

Adrian

If the gear boxes are made for holdens, why are they so dear to fix? Just a thought.

Originally Posted by jx2mad

If the gear boxes are made for holdens, why are they so dear to fix? Just a thought.

They are expensive to fix in the holders as well. When the oil pump dies, it wreckers the housing - which is part of the bell housing, so it requires very accurate and expensive machining. Apart from that, when you add all the individual parts up - which don't sound too expensive on their own, but they soon add up, add a couple of grand for labour to pull the box, stuff the new bits in it and refit it, and you will soon be out of pocket $6K+...

Just the same for the Dunny Doors...

I have a friend with an 03 model and he tows a van He is just having the box done for the 3rd time. His L322 is chipped. Jim

Jim, Your friend needs to find a new transmission specialist. The GM box presents unique problems that if not addressed will fail again and again and again, even in a 318/20i BMW which has absolutely no torque at all. There are many reports of 2nd & 3rd failures, usually not long after the initial rebuild, all have one thing in common – cheap rebuild. A lot of reading on this subject has uncovered a clear pattern in several markets; many rebuilds are excluding key components, often these components are not required in a rebuild of another brand of box.

It is an expensive transmission to rebuild and modify properly.

As this thread seems to have morphed into discussion on the GM box I have a question of anyone who has had a proper rebuild. How many k's since rebuild, any issues ?
By proper I mean sonnax treatment to pump and valve gear etc, fully rebuilt torque converter and all latest GM upgrades.
I have just had this done at A & B (Dandenong Vic), and they are very confident in their work. (2 year 50k warranty) For anyone interested my cost was $6500, plus $200 for new heat exchanger (cooler). If they supplied the cooler, total would have been $7k, however I sourced a new one from US.
It may be useful to keep a thread running on any isues which reappear on work done by A & B, and the other reputable rebuilders in Sydney etc. This would then give everyone a useful guide on whether the upgrades have solved the problem or not.

Peter G did A&B say the gearbox should be a lot stronger than the original and can you put more HP into it or is the auto still rated to 340nm.

Cheers Deco.

"did A&B say the gearbox should be a lot stronger than the original and can you put more HP into it or is the auto still rated to 340nm."

Deco, I didn't query the power rating but they are certainly saying the box is a lot better than the original. Particularly given that I understand many failures were due to wear of valve gear and pump due to the poor alloy used, the sonnax treatment is supposed to fix this. All I know with the TC is that they rebuild with the latest components.
You could give Sid Quintal at A&B a call on 03 9768 3755 for any more info.
Peter