2.5l upgrades for the NA I5

[Bruce Bell]

If the 2.3 you are talking about is the NF or NG, then it uses
144 mm rods.  In the late '80s VW tuners routinely made 2.0 L.
stroker kits with  92.8 mm stroke, 144 mm rods and 82.5/83 mm
pistons with a shorter deck to pin height.   Start calling around
to the VW tuners and see what they might have lying around. Try
Ron Wood (VW Specialties) or Darryl Vittone (tectonics).  With a
good exhaust and a Schrick cam (272) you should see around 170-5
hp.

Bruce

Hi guys!
> I've just done some mathematics and geometry today to
> see if a 2.5 crank
> coud fit in a 2.3 block.
> This 2.5l engine uses a 82.5 mm bore size with a 92.5
> mm stroke. As opposed
> to the 86.4 stroke for the 2.3.
> The problem that resulted was that either the stock
> block is 5mm too short
> to accomodate for the longer stroke or stock rods are
> 5mm too long.
> The distance between the holes in the stock rods is
> 159 mm for both engines.
> What could be the solution?
> Cutting/rewelding the rods? "Prolongate" the block?
> The latter seems pretty
> much like Sci-Fi :))!!!
>
> Any BTDTs?
>
> Thanks,
>
> Mihnea
>
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