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Tractor Pulling Discussion Forum

Hey Moline guys

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mEl

02-24-2008 13:35:41




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hey guys, I have a case project going and I need to know the Compression height and pin diameter of the 4 5/8 piston Moline used, also you professional builders, if you have a piston that is lighter I would be interested in buying if they will fit my application. Years ago a friend and I built a 4 5/8 930 and it seems that the piston used was a Moline but with the Case rods they were down the wall maybe 1/4 in. I may be able to overcome that with the crank I'm useing. Thank you in advance, mEl

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Shawn W

02-25-2008 14:51:20




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 Re: Hey Moline guys in reply to mEl, 02-24-2008 13:35:41  
How bigga piston can you go to? I got 4- 4.80 bore with a short compression height. I dont remember what that is but I will measure next time i go to shop If your intrested? They are Ross racing pistons
Shawn



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trulyred

02-25-2008 09:53:28




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 Re: Hey Moline guys in reply to mEl, 02-24-2008 13:35:41  
Your on the right track, I built a Case 600 about 5 years ago that way. E-mail me for more info.



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mEl

02-25-2008 15:17:49




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 Re: Hey Moline guys in reply to trulyred, 02-25-2008 09:53:28  
Thanks guys, 4.8 is a bit big as we already have the sleeves in the block. I could put it in the kwik way and punch to 4.8 I suppose, what is the pin size and compression height of those. Thanks mEl



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Shawn W

02-26-2008 08:47:19




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 Re: Hey Moline guys in reply to mEl, 02-25-2008 15:17:49  
The pistons are Ross Racing pistons, brand new. Have a 1 inch wrist pin, and a compression height of 1.90 inches, and they are 4.80 bore. New in box with keepers but you will need rings, Total Seal has the rings for them in stock.
They are actually for a MM with short blocks and a 6.5 inch stroke with U rods.
Shawn



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