They should hold up until you get over 6500 rpm. After that the small ends tend to separate at times.
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| Long Rod Engine Build Question: https://slantsix.org/forum/viewtopic.php?t=32899 |
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| Author: | Crazy Dart [ Fri Dec 19, 2008 6:45 pm ] |
| Post subject: | Long Rod Engine Build Question: |
Will the stock long rods hold up with a 12.5:1 compression ratio? I am building a Drag Motor and we are calculating a 12.5:1 compression ratio. I am planning on turning the motor about 5,600 RPM. There is a lot of knowledge on this board, please help. |
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| Author: | slantzilla [ Fri Dec 19, 2008 7:27 pm ] |
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They should hold up until you get over 6500 rpm. After that the small ends tend to separate at times.
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| Author: | Crazy Dart [ Sat Dec 20, 2008 7:34 am ] |
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Thank you Sir... |
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| Author: | Doctor Dodge [ Sat Dec 20, 2008 8:48 am ] |
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A well selected and reconditioned set of 198 con rods will hold-up to 12 - 1 compression, I have used them in 300 HP Slants with-out a problem. DD |
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| Author: | slantzilla [ Sat Dec 20, 2008 10:49 am ] |
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Quote: A well selected and reconditioned set of 198 con rods will hold-up to 12 - 1 compression, I have used them in 300 HP Slants with-out a problem.
I also have a set in my junk. They have held up well to as much as 180 hp worth of hose and 6500 rpm. DD  Can't say the same for my KB pistons. 
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