[Vwdiesel] 1.6l 11mm vs 12mm heads

gary gbangs at cfl.rr.com
Thu Mar 4 13:25:19 EST 2004

I could be mistaken.

But I didn't know there was a small vs large oil return in the 1.6.

There is the 1.5 head with smallish oil return hole. The 1.6 11mm, then
1.6 12mm, all else the same..

VWDieselParts.com has a bushing that allows use of a 1.5 head on the
early (11mm) block.


On Thu, 2004-03-04 at 12:51, Will Taygan wrote:
> Alright, I've got the head off my 1980 diesel pickup.
> It's a reman head that the PO put on, and didn't tighten the head gasket so oil leaked into the coolant.
> Head is straight, everything looks good, I bought a 4 notch elring gasket, which is what was on before.
> 11mm bolts, hex head.
> How can I tell if this is a 1.5 head, a 1.6 small oil return head or a 1.6 large oil return head?
> Will the bolts be sloppy in 11mm holes and 12mm holes, or are they tight in their respective heads?
> How big is a large oil return vs. a small oil return?
> Thanks.
> Will Taygan
> Concrete, WA
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