Does anyone know if the camshaft in a ALH(TDI 1.9) is the same as a AHU(TDI 1.9) cam?
I have a camshaft with a custom grind that works great in an ALH and I would like to put it in my AHU.
Typically you can use an ALH cam in an AHU\1Z application....you just cannot go the other way around....
mrchill, can you tell us more about the alh cam in the 1z /ahu? what differences are there?
mrchill, can you tell us more about the alh cam in the 1z /ahu? what differences are there?
I bet Dr. Diesel knows everything about the different TDI cams, and has specs for all of them.. just a guess tho..
I'd like to know also Mr. Wizard
Typically you can use an ALH cam in an AHU\1Z application....you just cannot go the other way around....
You can not use a AHU/1Z cam (or earlier) in a 1.6 because the timing slot on the ALH is used to drive the vacuum pump.
This graph Dr Diesel and I worked on shows the lift and duration of the ALH but nothing on the AHU or 1Z.
http://img.photobucket.com/albums/v603/burnyourmoney/Camshafts2.jpg
i put aaz cam into an alh head i just made the slot for the vacuum pump bigger
I put an AAZ cam in my AHU/1Z.
the alh can be swapped into the ahu from what I've read. Take a look here and other cam forsale threads on tdiclub and you will see similar info as found in this thread:
http://forums.tdiclub.com/showthread.php?t=295122I've also read on vwdiesel.net's older cam debate thread about how the AZZ cam is an upgrade for the AHU