Camshafts

[lucasone]

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.

[mrchill]

Typically you can use an ALH cam in an AHU\1Z application....you just cannot go the other way around....

[myke_w]

mrchill, can you tell us more about the alh cam in the 1z /ahu? what differences are there?

[R.O.R-2.0]

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..

[dieselherb1]

I'd like to know also Mr. Wizard

[burn_your_money]

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

[smiffie88]

i put aaz cam into an alh head i just made the slot for the vacuum pump bigger

[foxracer1]

I put an AAZ cam in my AHU/1Z.

[G60ING]

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=295122

I've also read on vwdiesel.net's older cam debate thread about how the AZZ cam is an upgrade for the AHU