9.8 deck 598?
#43
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iTrader: (7)
(Not good) although I know there's probably several out there.
Our only thought was if we went with the 4.250 crank and 6.535 rod which I would think would keep the pin up in the hole even further yet. Jim just said he wouldn't recommend only because he hasn't done any testing with such and hated to suggest it not knowing for sure the long jevity of and or if there are any known problems. So in a nutshell unless that is a proven package then I wouldn't consider that. The good thing about what Jim is running is I know him very well first hand and he runs his boart extremely hard with no issues so is it worth trying to reinvent the wheel so to speak. When something is proven why change.
I don't mind taking some risk but if the risk out weigh the rewards then what's the point.
Any thoughts on the above?
Tks
John.
#44
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Well Mike after much consideration and having a good conversation with Jim valako today I am going with your advice on this one. Jim was pretty skeptacle on anything over 4.250 also. His 565 that he runs extremely hard has the 4.250 crank, 6.385 rods with appropriate Pistons with no issues. After mocking one up we found a portion of the piston pin actually going below the hole.
(Not good) although I know there's probably several out there.
Our only thought was if we went with the 4.250 crank and 6.535 rod which I would think would keep the pin up in the hole even further yet. Jim just said he wouldn't recommend only because he hasn't done any testing with such and hated to suggest it not knowing for sure the long jevity of and or if there are any known problems. So in a nutshell unless that is a proven package then I wouldn't consider that. The good thing about what Jim is running is I know him very well first hand and he runs his boart extremely hard with no issues so is it worth trying to reinvent the wheel so to speak. When something is proven why change.
I don't mind taking some risk but if the risk out weigh the rewards then what's the point.
Any thoughts on the above?
Tks
John.
(Not good) although I know there's probably several out there.
Our only thought was if we went with the 4.250 crank and 6.535 rod which I would think would keep the pin up in the hole even further yet. Jim just said he wouldn't recommend only because he hasn't done any testing with such and hated to suggest it not knowing for sure the long jevity of and or if there are any known problems. So in a nutshell unless that is a proven package then I wouldn't consider that. The good thing about what Jim is running is I know him very well first hand and he runs his boart extremely hard with no issues so is it worth trying to reinvent the wheel so to speak. When something is proven why change.
I don't mind taking some risk but if the risk out weigh the rewards then what's the point.
Any thoughts on the above?
Tks
John.
#45
Registered
iTrader: (3)
Well Mike after much consideration and having a good conversation with Jim valako today I am going with your advice on this one. Jim was pretty skeptacle on anything over 4.250 also. His 565 that he runs extremely hard has the 4.250 crank, 6.385 rods with appropriate Pistons with no issues. After mocking one up we found a portion of the piston pin actually going below the hole.
(Not good) although I know there's probably several out there.
Our only thought was if we went with the 4.250 crank and 6.535 rod which I would think would keep the pin up in the hole even further yet. Jim just said he wouldn't recommend only because he hasn't done any testing with such and hated to suggest it not knowing for sure the long jevity of and or if there are any known problems. So in a nutshell unless that is a proven package then I wouldn't consider that. The good thing about what Jim is running is I know him very well first hand and he runs his boart extremely hard with no issues so is it worth trying to reinvent the wheel so to speak. When something is proven why change.
I don't mind taking some risk but if the risk out weigh the rewards then what's the point.
Any thoughts on the above?
Tks
John.
(Not good) although I know there's probably several out there.
Our only thought was if we went with the 4.250 crank and 6.535 rod which I would think would keep the pin up in the hole even further yet. Jim just said he wouldn't recommend only because he hasn't done any testing with such and hated to suggest it not knowing for sure the long jevity of and or if there are any known problems. So in a nutshell unless that is a proven package then I wouldn't consider that. The good thing about what Jim is running is I know him very well first hand and he runs his boart extremely hard with no issues so is it worth trying to reinvent the wheel so to speak. When something is proven why change.
I don't mind taking some risk but if the risk out weigh the rewards then what's the point.
Any thoughts on the above?
Tks
John.
#46
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Thread Starter
iTrader: (7)
The "reinventing the wheel" was kind of a figure of speech. Never said the pine would fall out the hole rather just meaning a portion of would drop below at the bottom of the stroke. The guy I spoke with Jim valako (valako race heads) had no doubt it's been done successfully however just didn't recommend it. He's no newbie at this and is over 900 hp with his 565 NA engine running pump gas.
I may still end up with 4.375 who knows but would like to decide relatively soon. I may build one of each. I doubt my boat will run in circles. Lol
I may still end up with 4.375 who knows but would like to decide relatively soon. I may build one of each. I doubt my boat will run in circles. Lol
#48
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iTrader: (3)
Well Mike after much consideration and having a good conversation with Jim valako today I am going with your advice on this one. Jim was pretty skeptacle on anything over 4.250 also. His 565 that he runs extremely hard has the 4.250 crank, 6.385 rods with appropriate Pistons with no issues. After mocking one up we found a portion of the piston pin actually going below the hole.
(Not good) although I know there's probably several out there.
Our only thought was if we went with the 4.250 crank and 6.535 rod which I would think would keep the pin up in the hole even further yet. Jim just said he wouldn't recommend only because he hasn't done any testing with such and hated to suggest it not knowing for sure the long jevity of and or if there are any known problems. So in a nutshell unless that is a proven package then I wouldn't consider that. The good thing about what Jim is running is I know him very well first hand and he runs his boart extremely hard with no issues so is it worth trying to reinvent the wheel so to speak. When something is proven why change.
I don't mind taking some risk but if the risk out weigh the rewards then what's the point.
Any thoughts on the above?
Tks
John.
(Not good) although I know there's probably several out there.
Our only thought was if we went with the 4.250 crank and 6.535 rod which I would think would keep the pin up in the hole even further yet. Jim just said he wouldn't recommend only because he hasn't done any testing with such and hated to suggest it not knowing for sure the long jevity of and or if there are any known problems. So in a nutshell unless that is a proven package then I wouldn't consider that. The good thing about what Jim is running is I know him very well first hand and he runs his boart extremely hard with no issues so is it worth trying to reinvent the wheel so to speak. When something is proven why change.
I don't mind taking some risk but if the risk out weigh the rewards then what's the point.
Any thoughts on the above?
Tks
John.
Last edited by mike tkach; 03-20-2016 at 05:44 PM.
#50
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iTrader: (4)
Well Mike after much consideration and having a good conversation with Jim valako today I am going with your advice on this one. Jim was pretty skeptacle on anything over 4.250 also. His 565 that he runs extremely hard has the 4.250 crank, 6.385 rods with appropriate Pistons with no issues. After mocking one up we found a portion of the piston pin actually going below the hole.
(Not good) although I know there's probably several out there.
Our only thought was if we went with the 4.250 crank and 6.535 rod which I would think would keep the pin up in the hole even further yet. Jim just said he wouldn't recommend only because he hasn't done any testing with such and hated to suggest it not knowing for sure the long jevity of and or if there are any known problems. So in a nutshell unless that is a proven package then I wouldn't consider that. The good thing about what Jim is running is I know him very well first hand and he runs his boart extremely hard with no issues so is it worth trying to reinvent the wheel so to speak. When something is proven why change.
I don't mind taking some risk but if the risk out weigh the rewards then what's the point.
Any thoughts on the above?
Tks
John.
(Not good) although I know there's probably several out there.
Our only thought was if we went with the 4.250 crank and 6.535 rod which I would think would keep the pin up in the hole even further yet. Jim just said he wouldn't recommend only because he hasn't done any testing with such and hated to suggest it not knowing for sure the long jevity of and or if there are any known problems. So in a nutshell unless that is a proven package then I wouldn't consider that. The good thing about what Jim is running is I know him very well first hand and he runs his boart extremely hard with no issues so is it worth trying to reinvent the wheel so to speak. When something is proven why change.
I don't mind taking some risk but if the risk out weigh the rewards then what's the point.
Any thoughts on the above?
Tks
John.
And yes, his 565 gets run extremely hard. I've run that thing for a few miles with the stick to the wood. (Dang LH throttle!)