Misc 2L questions

[marc_scirocco at sympatico.ca (Mtl-Marc)]

> 
> Not to hijack this thread but I have some 2.0L questions myself. I have in
> my shop a 3A 2.0L block, JH 1.8L block, PL 16V 1.8L block, 1.8L hydro
> head,
> 1.8L mech head, 16V 1.8L head all sitting next to each other. Except for
> the
> alignment pins set in the blocks what is stopping me from using the 3A
> block
> on any of these heads? There has to be a reason no one runs a 3A with a
> 16V head. 

Because you need to swap the pistons as well. 8V piston with 8V head, and
16V pistons with 16V head.

> Using the head gasket as a guide it looks like all the water and oil
> jackets line up and the head bolts are in the same spot for all these
> heads
> and blocks. I know the 1.8L heads have the one round opening sealed up but
> all the blocks have it open. I am guessing it has to do with the stroke of
> the block and the related compression ratio but that can be changed. Is
> the
> 9A 2.0L 16V block the same as the 3A bubble block? 

Yes

> No one who uses the 9A
> seems to have any hood clearance or exhaust alignment issues like people
> do with the 2.0L ABA tall block. 

You just said it. ;-) The tall block is taller. The 9A/3A/JH are all the
same height.

> I am just trying to make sense of what is
> really swappable between all the different top and bottom ends. TIA.
> 
> --
> Gordy
> MK1 x 3
> MK2 x 1

FYI, I am building an 8V 9A/3A combo. Why make it simple. ;-)

Cheers.

Marc
'83 Scirocco
'97 A4 Q