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Tractor Pulling Discussion Forum

Jd 70 lp pistons

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A puller

03-17-2004 13:27:53

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Has anyone tried to put .045 over 70 lp pistons into an unstyled A block? I know the cylinder wall can get thin with the std bore but how bout .045 overs. Dont want to have to scrap the block because of hitting water.

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A puller

03-18-2004 16:52:26

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Re: Jd 70 lp pistons in reply to A puller, 03-17-2004 13:27:53

5 7/8 is the most that I would go.

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mike

03-17-2004 19:21:06

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Re: Jd 70 lp pistons in reply to A puller, 03-17-2004 13:27:53

Think about it, the A piston std bore is 5-1/2 and std bore 70 pistons are 5-7/8,and you're thinking of putting 5-7/8+.045 that equals 5.8795 and that is .375 overbore for the A block,There's not that much meat there

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big jugs

03-17-2004 21:10:53

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Re: Re: Jd 70 lp pistons in reply to mike, 03-17-2004 19:21:06

saw an a that had been bored to 6", no sleeving. Ran awsome and sounded so tough..... for the 15 seconds that it ran till it blew a hole in the side of the sleeve! If you're gonna spend money on sleeving, start with a power block and then sleeve it .

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HHHHMMMMMMMMMMMMM!!!!!!!!

03-19-2004 17:25:10

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Re: Re: Re: Jd 70 lp pistons in reply to big jugs, 03-17-2004 21:10:53

First no sleeves and then it blew a hole in
the side of the sleeve.

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SLEEVES!!!

03-17-2004 19:28:10

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Re: Re: Jd 70 lp pistons in reply to mike, 03-17-2004 19:21:06

.....

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Old Joe

03-17-2004 16:50:55

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Re: Jd 70 lp pistons in reply to A puller, 03-17-2004 13:27:53

A puller, I'm looking for a set of 70LP pistons,preferably .125 over. I have not found anyplace to buy them, do you know where they sell them?
Thanks , Old Joe

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ChadS

03-17-2004 15:30:34

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Re: Jd 70 lp pistons in reply to A puller, 03-17-2004 13:27:53

I tried in a 41 block. Went through, and resleeved it. good choice of pistons! the compression height is a bit different I think, but still usable. Chad

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