Misc 2L questions

[dan.bubb at gmail.com (Dan Bubb)]

Yes, any of the heads will fit on any of the blocks.
For an 8V the CR is determined by the pistons. i.e. the combustion
chamber volume is the same for all 8V heads. So, putting any 8V head
on a 3A will give you 10:1 and any 8V head on a JH will give 8.5:1
(please shoot me if the numbers are off slightly).
Putting an 8V head on any block with 16V pistons will give you a really high CR.
Putting a 16V head on any block with 8V pistions will give you a really low CR.
The 3A and 9A blocks are not the same, but the differences are minor.
i.e. the hole in the block for the breather is different. Maybe the
hole for the distributor is different.
But, all the major dimensions, bore, stroke, bore spacing, block
height, crankshaft and bearing sizes, connecting rods, blah, blah,
blah.
So, simply installing a set of 9A pistons in place of the 3A pistons
using the same rods, crankshaft etc. will essentially make it a 9A.
BTW, I just happen to have a set of 2.0L 16V pistons, 83mm brand
spanking new, sitting in my closet should you want to go that way.
Hint, hint.....
Dan

On 11/22/05, Gordy Stedman <ydrogs@gmail.com> wrote:
> 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. 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? 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. 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
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