9A block from Audi 88 update

[area53 at validpath.com (Jeff Toomasson)]

Holy crap - you're making me dizzy w/ all of the mostly-incoherent blathering 
on about blocks, trannies, meh...

To wit:  the 3A came in an 8v config in Audis, the 9A in a 16v config in VWs. 
The ABA block is considered by some to be more sturdy due to its better rod-
ratio. This benefit will really only be realized in the highest-rpm race 
configurations. When used in conjunction when used w/ a 16v head, the ABA will 
have a lower compression. As is, that's been stated to be somewhere in the 8.0 
to 8.5 region which is good for high-boost applications, but may be piggish in 
the low rpms. The same goes for the 3A (except the Rod Ratio part). For the ABA 
application, there's a trick to re-raise the compression by rebushing certain 
rods and such, but I don't have time to go into it right now.

Dave B - the best advice I can give you is go bury yourself in the Hybrid/Swap 
and Forced Induction forums on the Vortex. It's fascinating reading. And BTW - 
I mentioned getting the 3A distributor because it's 1) plug-n-play w/ the 
3A/ABA blocks when used w/ knock-sensing ignition in the 8v config and 2) 
valuable enough to sell on the side if you end up not needing it...

HTH, JT



>     Dizzy?  What Dizzy?  I was looking for a Dizzy?  Do I have to change a
>     Dizzy with that head swap?  I was pretty Dizzy last night when I was
>     trying to figure out the block codes.  I'm actually looking for a
>     Tranny, maybe that's what you heard.  I need either a AGS, ACH, or AOP.
>      I had four, am down to three soon to be two 2Y's and a FN.  But Ron
>     said he'd hook me up as soon as I source the .75 fifth which should be
>     almost on it's way.... as soon as they guy pulls it from the ACN... now
>     I really am dizzy.