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pic#1 of bad crank

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CAPT.HOOK

07-21-2005 20:35:37

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hear are a series of pics on a bad crank

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Mopower

07-22-2005 10:54:41

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Re: pic#1 of bad crank in reply to CAPT.HOOK, 07-21-2005 20:35:37

Looks expensive to me. A metalurgist might say that weld job was a bit hot. Not sure. I'm no expert, just mental metal novice.

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o,kspuller

07-21-2005 20:41:14

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Re: pic#1 of bad crank in reply to CAPT.HOOK, 07-21-2005 20:35:37

look at the flange no support it was all ground away

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a puller

07-21-2005 20:58:06

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Re: pic#1 of bad crank in reply to o,kspuller, 07-21-2005 20:41:14

how big of a stroke was that....?...looks liek a 2.75" journal..was it?

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o,kspuller

07-21-2005 21:03:47

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Re: pic#1 of bad crank in reply to a puller, 07-21-2005 20:58:06

9 in and yes 2.750

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a puller

07-21-2005 21:10:11

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Re: pic#1 of bad crank in reply to o,kspuller, 07-21-2005 21:03:47

next time, i'd go with a 3"....its alot stronger....that lil .25.....i know you didnt' have the crank done...but just a fyi..... i don't personally have any experience with these kind of huge motors, but i have talked to many and have thought about doin a 6.125x9..but haven't...we currently have a 6.125x7.25, and it runs strong....and ain't afraid to rap it..... .

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o,kspuller

07-21-2005 21:18:21

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Re: pic#1 of bad crank in reply to a puller, 07-21-2005 21:10:11

what head are you using and cam, my new crank well be home next weekend, and then the the work becanes.

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a puller

07-21-2005 21:22:49

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Re: pic#1 of bad crank in reply to o,kspuller, 07-21-2005 21:18:21

we have a 60 head, and i have no idea the cam grind, its a small shop..and they only have one grind..but it seems to work good..... .someday when i have money, i'll put together a bigger stroker. i can't believe how much work the 7.25 was, i cna't imagine a 9 or anything like that. how big is your new stroke..or undisclosed...haha.....?

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o,kspuller

07-21-2005 21:24:53

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Re: pic#1 of bad crank in reply to a puller, 07-21-2005 21:22:49

bigger then 9 with out moving the cam

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a puller

07-21-2005 21:40:06

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Re: pic#1 of bad crank in reply to o,kspuller, 07-21-2005 21:24:53

well...good luck with that, hope it holds. i've heard of up to liek 9.375 w/o movin the cam, but i can't hardly believe it....thas huge..... i can't imagine over 8...haha....let us know how the project goes.

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Drew

07-21-2005 22:40:09

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Re: pic#1 of bad crank in reply to a puller, 07-21-2005 21:40:06

I have 9.375/2.75 pin and it wasnt too bad to swing. 9.500 is possible, but the flats on the cam have to be dead nuts right to keep enough material in it to keep it straight, especially with decent valve spring pressure, high ratio rockers and a big cam.

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a puller

07-22-2005 08:16:03

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Re: pic#1 of bad crank in reply to Drew, 07-21-2005 22:40:09

holy crap. i figured the cam had to be moved after 9.375. i guess when i build mine, if i ever do...haa..i'll have to go big or go home..haha...what kinda power does yours have, or ain't ya ever put it on the dyno? I think you sent me pictures of your sleeves..... aol deleted them already, but it wasn't a bad job. i would have to go a little smaller because i wouldn't want it visible...lol..... thanks alot, a puller

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Big Jugs

07-22-2005 09:57:00

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Re: pic#1 of bad crank in reply to a puller, 07-22-2005 08:16:03

9.25" with 3" journal, DID NOT move cam. You just have to remember these three things when building: patience, patience, patience! Good for 662 cubes, and yes...it does hold water!Won 5000# Div. at Columbia. Is also for sale if interested.

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CAPT.HOOK

07-23-2005 15:21:28

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Re: pic#1 of bad crank in reply to Big Jugs, 07-22-2005 09:57:00

how much? k-reid@cox.net

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CAPT.HOOK

07-23-2005 15:21:08

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Re: pic#1 of bad crank in reply to Big Jugs, 07-22-2005 09:57:00

how much? k-reid@cox.net

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o,kspuller

07-22-2005 09:42:09

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Re: pic#1 of bad crank in reply to a puller, 07-22-2005 08:16:03

just takes some time and alot of grinding and grinding but it will be worth it at the end,I think it would be easer to move the cam to get the claernce,

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Drew

07-23-2005 11:11:14

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Re: pic#1 of bad crank in reply to o,kspuller, 07-22-2005 09:42:09

Please explain how moving the camshaft is EASIER than notching it for clearence.

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Ironman

07-22-2005 10:43:04

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Re: pic#1 of bad crank in reply to o,kspuller, 07-22-2005 09:42:09

Moving the cam can depend a lot on what kind of rods you use. Like others said you can get well into the 9's before things start to be a problem. If you use JD A rods they clear better in the back but not up top. 4020 rods and other types clear better up top but not in the back.

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