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Tractor Pulling Discussion Forum

Pistons for an H stroker

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07-01-2006 14:23:13

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What"s a good piston for an H with a 1/2 " stroke? Thanks Boondock

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07-02-2006 05:47:02

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 Re: Pistons for an H stroker in reply to Boondock, 07-01-2006 14:23:13  
What bore? You might still be able to use stock ones...

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07-02-2006 15:05:12

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 Re: Pistons for an H stroker in reply to AC, 07-02-2006 05:47:02  
AC,I was just curious about any piston that I would'nt have too bore really big.I don't have a piston book to find one with .250 shorter compression height to compensate for the .500 stroke.Anything a little bigger would be fine for what I wanna do.Thanks Boondock

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07-03-2006 07:06:25

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 Re: Pistons for an H stroker in reply to Boondock, 07-02-2006 15:05:12  
IH 706, and 806 gas pistons will work for what you wanna do... 3-3/4 bore, or 3-13/16 bore sizes. You would have to install a wrist pin bushing to adapt the wrist pin to the rod, but its easy to set the compression height to do probably,,,, no cutting of the piston to make the piston come all the way to the top of the bore, depending on where you set the wrist pin bore location in the wrist pin bushing. Chad

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07-05-2006 05:30:31

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 Re: Pistons for an H stroker in reply to ChadS, 07-03-2006 07:06:25  
I would go out on a limb and say you could use a 350 rod and not have to do much at all to the rods to get the compression height close. I use H rods due to the larger wrist pin bores, and if I need to correct,, I offset the bushings. If you left it dead center,, you could mill .020 off the block deck and make up the difference,, or cut the pistons a little to make up the difference. Watch the corners of the domes to the front annd back edges of the compression chamber,, if it hits the head,,, thats where it will be hitting cause the domes are wider than stock, and have to cut to fit up inside the head. Or, you could have a copper head gasket made .020+ thicker than stock and make room for any excess above the block deck. 5 inch stroke is the minimum stroke to use the 6 cyl pistons,, Chad

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