Re: Re: Sleeves in a C113 engine block

Posted by Stan(VA). on July 16, 2003 at 12:23:16 from (69.19.0.1):

In Reply to: Re: Sleeves in a C113 engine block posted by David Bean on July 16, 2003 at 08:12:34:

David,
If the blocks have the same casting number they should be identical. If not, one has been modified.
To get to the bottom of this pull a sleeve out of each block and measure the outside diameter of the sleeve about an inch or two up from the bottom of the sleeve (where the O-ring seals). They should be 3 5/16" (~3.3125). If one is 3 7/16" (~3.4375) then that block has been bored to match the sleeves from a Super C engine block (casting 354898). The possible danger here (and response to your second question about feasability of modifying the block to match the sleeves) is that few to none of the standard automotive machine shops have the tool to enlarge that O-ring grove (yes, I've tried this before). So if you find you have one that's been modified, you also need to measure and compare the depth of the o-ring grooves (or slots) inside the blocks. It should be about 1/8" deeper on the block with the larger sleeves. If it is than you can get a 'Super C overbore' 3 1/8" to 3 1/4" piston and sleeve set and you're done. If not (they are the same depth) than you have a custom situation and need to measure and spec out the correct o-ring from someone like McMaster Carr. You won't be able to use the o-rings in a standard kit. I have done this but can't report on success/failure yet because it's stil sitting in my basement waiting for a tractor to go in (just a spare block I decided to experiment with). I'll post a little more on this to Bill down below.
To summarize: if your new/good block is original (small sleeves) and the old one has larger sleeves, I would buy a "C overbore" 3" to 3 1/8" piston and sleeve set and be done with it.
I hope all this rambling helps ;)
Stan(VA).

Follow Ups:

• Re: Re: Re: Sleeves in a C113 engine block David Bean 15:56:53 07/17/03 (1)
  • Re: Re: Re: Re: Sleeves in a C113 engine block Stan(VA) 21:02:24 07/17/03 (0)

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