Re: Engine questions

["Bruce Bell" <bbell@csn.net>]

BTDT with the 2144's baby sibling, the 1715cc. What you do have to watch
out for is the rods.  If I remember correctly the 2144 has 136mm rods with
22mm wrist pins and the later motors use 144mm rods with 20mm wrist pins.
In other words use the later rods with the later pistons. VW tuners
routinely took the 1715 to 83mm with no reported problems. Course that was
considered the max size. 

The stock CIS should be just fine if you don't get silly with compression
ratios. And pay close attention here; the early heads had smaller
combustion chambers than newer heads (25cc VS 30cc I think) and your
compression ratio will go up as a result.  Not sure what size valves the
2144 has; but, the stock 1715 had 34mm intake and 31mm exhaust valves. I
suspect yours are the same. Not the ticket for high performance but low
end torque should be great. You may want to have a later head adapted to
your early block. 

If I were contemplating this, I'd just go out and buy a used 2.3 long
block. Cheaper, easier and less worry.


Bruce
 _______________________________________________________________________
   Bruce Bell                                            bbell@csn.net
   Bruce Bell and Associates, Inc.                Voice (719) 275-1661
   P.O. Box 400,  Canon City, Colorado 81215-0400   Fax (719) 275-1664

----------
> From: Andrew Duane USG/PE <duane@zk3.dec.com>
> To: Quattro List <quattro@coimbra.ans.net>
> Subject: Re: Engine questions
> Date: Thursday, December 05, 1996 6:23 AM
> 
> Hairy green toads from Mars made Eric Fluhr ask:
> 
> > I was wondering if you could take
> > a 2144cc engine, bore the block by 1.5mm or 3mm and use the pistons
from
> > the respective 2.22L or 2.3L engine.  Would the stock CIS system be
able
> > to deal with the larger displacement?
> 
> Wouldn't this have a problem with cylinder wall thickness? Boring 1.5
> millimeters out of a cylinder would be dicey, I think that 3 would leave
> you no wall at all.