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Tractor Pulling Discussion Forum

Re: 3 in journel on a stroker crank hold togeather

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Tree Topper

01-30-2013 11:10:15

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I have a 9.75 stroke, 6.375 bore, about 9 to 1 compression. Been running since 2004 with no problems yet. Has been pulled pretty hard in 10,200 lb. class many times. Works real well.
Oh yes it has a 3 inch journal!

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Big G puller

01-30-2013 15:41:55

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 Re: 3 in journel on a stroker crank hold togeather in reply to Tree Topper, 01-30-2013 11:10:15  
well iv been running this crank for 7 yrs with 3 in journels 7.5 block thats 832 cubes block went bad so if im gonna replace block to 7 3/4 im going with a new crank shaft befor it breaks

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Mike n Mo

01-30-2013 13:27:14

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 Re: 3 in journel on a stroker crank hold togeather in reply to Tree Topper, 01-30-2013 11:10:15  
Tree Topper, Your 3" journal should be very reliable at 622 cu in. We're running 3" journals on A's with more cubes than that, and just replaced a crank after 6 years (before it broke). The engine in question will have 896 cubes, almost half again more than yours, and needs the bigger journal to have decent reliability. Mike

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Tree Topper

01-31-2013 09:54:13

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 Re: 3 in journel on a stroker crank hold togeather in reply to Mike n Mo, 01-30-2013 13:27:14  
Yes I know this is not a very big G as compared
to what is being built these days, but this set up has worked very well for me. Been very reliable. Don't use the engine up very often even in heavy classes. Lots of fun.

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