Re: Stan(VA) pistons

Posted by Stan(VA). on January 06, 2007 at 21:39:30 from (4.248.248.221):

In Reply to: Stan(VA) pistons posted by Dale in ar. on January 06, 2007 at 18:43:52:

Dale,
No I havn't done that yet. I was trying to get you a 3-1/4 piston with the firecrater head, and AFAIK Farmall only went to a 3-3/16 overbore kit from the factory for the 354898R block. My assumptions were that since the C135 is just 0.062 longer stroke and had a 0.060 smaller pin, you could offset bore the pin hole and get right back where you wanted to be and you would get the firecrater head design (vs the Tisco aftermarket pistons for the 3-1/4 overbore kit which are ~0.100 short on comp height and just have the step head design but the right pin bore). I wouldn't normally recommend that to anyone else because of cost (buying the original sleeve kit + a C135 kit + the machining) but you were looking for ideas.

Anyway... I just did some checking on a spare C135 P&S set I have here and found that I was wrong (my appologies). They dropped the compression height at least 0.100 from the C123's which gets you right back to the Tisco pistons (as far as height). Quickly eyeballing it the C135 piston seems to match the C153 comp height (due to stroke, the C153 would need about 0.125 shorter height). They may have changed the deck height on the C135 block, or they might have just been trying to save money and use a single mold to cover both piston blanks. That's all just a guess until I see one put together with the crank. I have a spare block and sleeve kit, but no extra 135 crank at the moment. I know the aftermarket kits for 3-1/4 don't come to the top of the block, like the 3-1/8 kits do.
Realizing the comp height difference, I'd just use the Tisco parts and save my money. And BTW, make sure you have the early rather than the late C135 head (9 vs 14 bolts).
Stan(VA).

Replies:

• Re: Stan(VA) pistons BDM 22:56:44 01/06/07 (1)
  • Re: Stan(VA) pistons Stan(VA). 09:52:57 01/07/07 (0)

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