903 Engine Clearance Specs

Does anyone have a link to bearing and piston bore tolerances for the 903 engine?

Also, I'm looking for a rocker assembly, one piston, and four valve springs.

Mark

Make that a complete 903 engine. This one is trashed

Mark said:

Also, I'm looking for a rocker assembly, one piston, and four valve springs.

Mark

Click to expand...

Re: 903 engine

Mark,

I finally had a chance to check on my 850 engines in storage.

I have 3 903 bare blocks (block + main bearing caps) available to spare & maybe 1 903 short block as well (I say "maybe" because I need to make absolutely sure it's not one of the engines that I need to keep). I'd have to check/verify the bore size(s) of the 3 blocks, but I'm fairly sure at least 2 of the blocks are at STD size (65mm), because I remember that's why I saved them in the first place (in case I ever wanted to do the offset-bore thing with 66mm or 67.2mm pistons, ala PBS).

At this point I'm looking for a complete engine as the one a have is too far gone. The person refunded my money so I'm back to square one.