1.9 AAZ Intake/Exhaust Valve question

[stomperz71]

I have a 1.9 AAZ engine that came out of a 1994 Golf. I'm rebuilding the enigine. My question is what Intake/Exhaust valve does this engine take? Is their more then one size valve for this engine?

[rallydiesel]

There are two different stem sizes. Early versions had the 8mm stem and later ones had the 7mm stems. Smaller stems allow for more flow. You could go either way but get valve guides to match the stem diameter.

[stomperz71]

Ok thanks for that info..

I was reading some back post about different length also?

[stomperz71]

Anybody have part numbers? My parts guy is having trouble finding the right valve.  Thanks

The part numbers I have from the dealer are:

Intake # 028 109 601C
Exhaust # 028 109 611E

Them two number have different size stem dia. The Intake is 7mm and the exhaust is 8mm. The valves I took out of my head are both 8mm. The new valve guides I got are for 8mm valves. So I'm just wondering what the AAZ is suposed to have?

One other thing, my Bentley service manual has the AAZ valve spec as:

Intake Stem Dia. 7.97mm
Intake length 95.0mm

Exhaust Stem Dia. 7.95mm
Exhaust Length 95.0mm

I'm just real confused!!!

[theman53]

If you are going for a performance build then

Air Cooled Engines Plus, local profile:

Address: 286 2nd Avenue
City: Tiffin
State: Ohio
 
ZIP: 44883
Phone: (419)443-8987


 got me stainless versions for less money than stock...For a little more money he will undercut and swirl polish them. I think his name was John. Sorry for not being able to help your OP

[rallydiesel]

Try these (should both be 8mm but I'm not 100% sure, taken from vagcat):

Intake: 069109601F

Exhaust: 074109611

I'm pretty sure the part numbers you posted are both for the 7mm stems.

[stomperz71]

Try these (should both be 8mm but I'm not 100% sure, taken from vagcat):

Intake: 069109601F

Exhaust: 074109611

I'm pretty sure the part numbers you posted are both for the 7mm stems.

Your right on the Exhaust #074109611 that is a 8mm stem, 95.50mm length. I did get that one today.

I'll have to check on the that Intake #.

[stomperz71]

If you are going for a performance build then

Air Cooled Engines Plus, local profile:

Address: 286 2nd Avenue
City: Tiffin
State: Ohio
 
ZIP: 44883
Phone: (419)443-8987


 got me stainless versions for less money than stock...For a little more money he will undercut and swirl polish them. I think his name was John. Sorry for not being able to help your OP

I talked to that guy a long time ago I'll have to check back with him and see if he can help me out. I'm about an hout from Tiffin. Thanks

[theman53]

I didn't even pay attention to where you were from. Cool. Hope it works for you.