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Engine Specific Info and Questions => TDI Engine -General Info => Topic started by: 1stdiesel on February 07, 2005, 08:52:38 pm

Title: Motor differences
Post by: 1stdiesel on February 07, 2005, 08:52:38 pm

What are the differences between the 1Z and the AHU motors? Will the heads and blocks interchange? How about bolt up to the tranny?Thanks for any and all info.

Title: Motor differences
Post by: Piper106 on February 07, 2005, 09:31:46 pm

All VW four cylinder water cooled engines, from a 1975 era 1.5 L gas through the newest 2.0L PD diesel have the same trans bolt pattern, so the trans should bolt up no problem.

As far as I know the 1Z and the AHU long blocks are the same, so the heads or blocks should interchange either way.  

The only difference I am aware of between the two engines was the turbo charger. 1Z usually was supplied with a Garrett GT15 turbo, the AHU had a KKK03 turbo.

Piper106

Title: Motor differences
Post by: gbangs on February 23, 2005, 01:43:03 pm

My early '97 1Z has a KKK. It was supposedly replaced sometime before I bought it.

As far as I know, the Garrett and KKK turbos of this era are interchangeable as well.