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Henry Schmidt Henry Schmidt is offline
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Join Date: Apr 2004
Location: Fallbrook, Ca. 92028
Posts: 5,934
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Yes we do it all the time. But it's not that easy.
Some back ground.
The 3.2 has a longer stroke but a shorter rod. To make it all fit and maintain the same overall engine dimension Porsche raised the pin location. (pin height).
The stroke is 4mm more, but the rod is only .8 mm shorter.
That means they raised the pin height 1.2 mm because the stoke made a 2 mm difference at each end.
Here's what you do.
Remove the old pin bushing.
Off set bore the 3.0 rod end to fit the 3.2 bushing. Remembering that we are trying to make up for the different wrist pin location, set the bottom of the new hole at the bottom of your existing hole.
This will give you almost 1/2 of the rod length you need.
If you want all the the deck height back you will need to make a bushing that has a 3 mm larger OD with a 20 mm id and install that bushing in the 3.0 rod. Now you must off set cut this bushing .5 mm. This will give you the proper deck for normal installation. When you're all done your rod length should be 2mm longer. On most Porsches longer rods are better.
Higher compression pistons, no CE rings and longer rods, all good.

I have also seen people install a solid 2.7 bushing and just off set cut that solid bushing and the results are ugly but it works.
"Ugly but it works", where on this board have I seen that?
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Henry Schmidt
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Last edited by Henry Schmidt; 10-11-2005 at 03:45 PM..
Old 10-11-2005, 03:43 PM
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