What pistons are these?

[jaybird840]

Hi All,
I haven't officially started my rebuild thread, but I'm well underway for tearing the engine down. The motor by number is a '75 2.7S. When I purchased it, I was told that the engine had Euro pistons. I pulled the left side heads today, and was greeted with these... Definitely not CIS, but what?


I was also THRILLED to see what appears to be Nikasil cylinders. they have a nice crosshatch pattern, and are slightly magnetic.... Nikasil, right?


Last, it appears that the case has already been timecerted or case-savered... Can anyone verify?



Thanks for all the help, and I'll get the rebuild thread underway!

[tom1394racing]

These look like the 8.5 CR RS pistons.

Here's a better pic for comparison.

[jaybird840]

That's almost too much for me to wish for.... Look similar to me. I'll pray the right side is in as good of shape as the left. If I'm lucky, can I get away with a scotchbrite/rering?

[notmytarga]

I found the same pistons, timecerts etc in a '75 California 2.7 I tore apart. The pistons are forged but there is some agreement that running them with CIS would be less than ideal. Find a MFI or carbs and you would be set. Those are Nikasils - get out the bore gauge!

[jaybird840]

Yep, these babies are getting Webers and headers when it gets stuffed into my 914. Looks like I'll get to choose new cams as well... Found some pitting on a couple of lobes.