Lightening wrist pins
 

Anybody have advice on how much can be safely taken out of 2.0S wrist pins?

I'll be using Mahle 80.5mm 67S pistons.

I have a full machine shop available so don't hold back on suggestions.

Engine will be a hot street, I think I just have a serious case of while-i'm-in'there-itis.

andy

I have a set of light pins, 57mm long and 63 grams.
Under for sale with this header and pictures
Bruce

Light weight wrist pins

No advice?

andy

I tapered the pins of my 930 Turbo like this with no issue so far (10'000km on street)

Tapering only within the area where piston is, at rod is still the stock diameter.

Did this to reduce oscillating weight and because the piston seem to be weaker at this area I decided to taper like seen on other engines

The red area is what I machined off:

Sorry, too small pic. See better one below

BTW: Use of HSS is useless here as pins are made of very high strenght steel