Re: Crazy Idea No.2

["Bruce Bell" <bbell04@ibm.net>]

Technically, I think it can be done. As I remember VW used oil squirters in
most of their blocks after about '85.  They should have some 8.5:1 pistons
(81 mm) that would drop in. Also, I recall VW tuners would update their
early blocks with the squirters and clearance the pistons to work -
tectonics comes to mind.  As for compression, If 8.5 seems too high then a
few thousandths could be taken off the piston tops. Certainly wouldn't want
to go very high with the CR though and I would plan on some quality head
work to reduce the chance of hot spots  developing.  Valve clearance won't
be a problem - nothing here different than a JT with high lift cam. 
Personally, I wouldn't consider this option since the extra work prolly
wouldn't be worth the benefits and money could better be spent on IM, IC,
TC.   

Bruce
----------
> From: HAREST@allenbrook.iix.com
> To: quattro@coimbra.ans.net
> Subject: RE: Crazy Idea No.2
> Date: Wednesday, May 20, 1998 2:31 PM
> 
> Other things to keep in mind.  The piston skirts on turbo motor pistons
have
> been clearanced for the oil squirters.  If you were to put NA pistons in
a
> turbo block, you'll damage either the pistons, or the oil squirters... 
You
> may also have a problem with valve meeting the piston tops, due to
different
> shapes and different lift and duration between the NA and turbo cams...
> 
> Food to dissuade crazy ideas from becoming crazy actions.
> -Stott
> 
> 	Harrison wrote:
> 
> > I think that the title to this e-mail says it all: CRAZY. Wouldn't this
be
> > like
> > sticking a turbo on a NA engine and blowing pistons or connecting rods?
> > 
> > harrison
> > 
> > Tony Lum wrote:
> > 
> > > Hey gang,
> > >
> > > Has anyone tried increasing the compression of the turbo engines by
> > using
> > > pistons from NA engines during a rebuild?  Then you could get some
low
> > end
> > > grunt and even back off on the boost.  It probably wouldn't pass CA
smog
> > > anymore, and you would certainly have to remap the fuel curve...just
a
> > thought
> > >
> > > -Tony
> > 
>