The only difference is the piston set. Even with that engine number,
you may find that someone has changed pistons at some point.
Next time you rebuild it, just go for the pistons with smaller dishes
(or flat top)
Mike
-----Original Message-----
From: Greg Mahney <mahney@central.murdoch.edu.au>
To: spridgets@autox.team.net <spridgets@autox.team.net>
Date: Sunday, December 06, 1998 11:03 PM
Subject: Low Compression Motor
>My Sprite has a "low compression" motor ie it is the wrong engine for the
>car, but it was designed to be a "low compression" version of the A-series.
> This is evidenced by the engine number which is:
>
>9D-U-L-105729 (the "L" is for LOW")
>
>My question is What makes it "low compression". is it the type of head?,
>shorter stroke? different pistons?
>
>Anyone know the answer to this one?
>
>Many thanks
>
>Greg
>
>
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