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Browsing this Thread:   1 Anonymous Users

How to use A14 piston in A15 engine
2001/5/3 7:04
From Hawaii, USA
Registered Users
Posts: 30643
If you have some A14 pistons but none for A15, how do you make them work in the A15 engine?

A15 pistons has 2.5mm higher pin height compared to A14 so that it can work with the same length rods -- even though the stroke is 5mm longer. Resulting in A14 piston sticking out 2.5mm if placed in A15 engine

Just mill 2.5mm off the top of the A14 piston. Now it will fit A15 engine

I think that is the H89 offset-dish piston

Attach file:

jpg  Pistons - A15 30mm pin height (249g) and A14 32.5mm pin height (273g).jpg (34.51 KB)
174_5c885410c2472.jpg 416X288 px

jpg  A14 offset-dish piston.jpg (24.44 KB)
174_5c885620573c5.jpg 400X480 px

jpg  easy-to-mill aluminum 2.5mm removed.jpg (132.66 KB)
174_5c88562d88ea5.jpg 497X1024 px

jpg  bonus -- now higher compression!.jpg (70.01 KB)
174_5c88563933b04.jpg 704X752 px

Posted on: 3/13 1:01
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