ovesize bearings to a 2.7 block? where?

[JYRI ERAMAA]

is there a company that sells oversize main bearings for a 2.7 block?
havent found any...is it worth the hassle?
the block is othervise good, but my guess is that it needs some machining.
the block is in stock size.

i would have a possibility to use a 901/02 block or a 901/09 block instead...
for a screamer project...with 90mm high comp slugs.
what would you do?


thanks for any info

[4sd911]

If your looking for oversize bearings for a ground crank they are available here and other suppliers. If you need oversize for a line bored case I believe they can only be purchased from the Porsche dealer.

[JYRI ERAMAA]

Hmmm, its for the block. So i have to ask, from Porsche dealer then. Thank you! :-)

[Flat6pac]

Thats not a 2.7 block..
Bruce

[J P Stein]

Bearings for an oversized mainbore OR an undersized crank are priced like gold.

I have a perfect .01" under crank that would make a nice lamp.

[JYRI ERAMAA]

Bruxe is right. Thats my 68 s block. But the whole thing sounds like 911 blocks are not so great to rebuild... :-(

[ChrisBennet]

Instead of increasing the size of the mains and using oversize bearings ($$) you would do better to just have the case resized.
Resizing = taking a little off the case halves and reboring the shaft holes back to standard.
Competition Engineering or Ollies can do it for you.
-Chris

[Steve@Rennsport]

Originally Posted by ChrisBennet

Instead of increasing the size of the mains and using oversize bearings ($$) you would do better to just have the case resized.
Resizing = taking a little off the case halves and reboring the shaft holes back to standard.
Competition Engineering or Ollies can do it for you.
-Chris

Chris is right on,....

Thats the proper way to fix these cases.

[JYRI ERAMAA]

great to know, but im located in europe :-( sadly. i have to ask from the machine shop. if they can do it. thanks again. maybe getting a different block would be the best thing?