Stock Eurovan 2.5 compression?

[Bruce Bell]

Back in the mid 80" tectonics and several other tuners were building 2.0
liter 8v motors with 82.5 -83 mm pistons. These motors used a 94.5 mm crank.
Given that, if you could find a source for these pistons, they would only
need 0.5 mm taken off the top. Last time I heard from Darryl, perhaps 10
yeas ago, he no longer had these available at techtonics. I think the
pistons were available in both 8.5:1 and 10:1 CR.

Bruce

-----Original Message-----
From: quattro-admin at audifans.com [mailto:quattro-admin at audifans.com]On
Behalf Of JShadzi at aol.com
Sent: Sunday, June 23, 2002 3:51 PM
To: FJ40Jim at aol.com; quattro at audifans.com
Subject: Re: Stock Eurovan 2.5 compression?


--
[ Picked text/plain from multipart/alternative ]
Right, obviously with increased stroke the rods and pistons need to be
compensated for.  It would be like putting big bore pistons in the stock
bore, obviously the bore will have to be compensated for.  Typically, a
shorter rod will make up the difference nicely.

All the VW 2.0 motors (from the factory anyway) used a 92.8mm crank, the
Eurovan crank is 95.5mm and uses a taller deck to make up the difference, so
I've yet to find factory parts that work perfectly for the I5 short deck
95.5mm application.  I do have a source for 92.8mm cranks, but it uses a
much
larger diesel rod jornal.

Javad

> <<If the 2.5 crank would fit in the 2.2 crankcase, there would still be
the
> problem of the longer stroke.  The pistons would come out the top of the
> short 2.2 block.  Unless there is a shorter rod, or a special piston w/
the
> pin moved very high.  There is probably a stock solution for this by
> borrowing pieces (rods &/or pistons) from a short deck 2.0L 4cyl.  Anyone
> tried this?
>
> In a message dated 6/21/2002, JShadzi writes:
> > >So, what wouldnbsp;prevent the use of an Eurovan crank in anbsp;NF/NG
> > engine. Bearings???
> >
> > Nope, they are the same
> >
> > >A stroker NF/NG would be interesting with the ABT cam and head work.
> > >TSR performance in the UK claims to have what it seems to be this
> > combination with a 2.6l /185hp NA 5 cyl engine.
> >
> Thanks,
> Jim Chenoweth,  TLC Performance
> Lancaster, Ohio, USA
> Ph. 740.862.2604   Mailto: <fj40jim at aol.com>
> TLCA #1914
>