[Vwdiesel] heads

[Shawn Wright]

On 15 Apr 2005 at 7:05, Pam & Doug Boes <db53248 at alltel.net> wrote:

> Can a hydraulic head be installed on a block that originally had a 
> mechanical head w/o problems? If so, do other adjustments need to be 
> made as well?

I'm not sure what happens to the oil galleries - the non-hydr. head & block only has 
the one between cylinders 2 & 3 on injector side of head/block. The hydraulics have 
an extra smaller passage between cylinders 1 & 2, and the centre one is also larger 
(I think). I have one of each in my garage right now, so can compare, but I don't 
know if it is safe to run hydr. head on older block. I would think not, since that extra 
oil gallery must serve some purpose... I'm not sure if it is supply or return.
Also, the hydraulic engines used a larger oil pump, 36mm vs 30mm for 86+ engines. 
Replacement pumps are all 36mm I believe, direct replacement for 30mm pump.

Shawn Wright
http://zuiko.sls.bc.ca/~swright
'85 Jetta D 
'88 Westy 2.1L, soon to be 1.6TD 5 speed
 (see progress at http://members.shaw.ca/vwdiesels)
'82 Diesel Westy