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Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum
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Detroit diesel cylinder sleeves

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Josh

01-16-2004 06:23:32




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I am currently redoing a 1900 with a detroit diesel, and we are going to install a turbo. We have got the N pistons and sleeves (21:1 compression) and I was wondering if there is any difference in the intake ports in the cylinder walls between liners designed for turbo or non-turbo motors. Since we have sleeves designed for a non-turbo motor I am thinking we may have to modify the intake ports. Am I correct in figureing that intake air with continue to rush into the cylinder until the cylinder pressure from compression becomes more than the airbox pressure? If this is true an intake port that extends higher into the cylinder walls should be beneficial. Also is there any difference as far as piston to cylinder clearance goes? Please let me know any other differences that I should know about. Thanks for the help.

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No!

01-16-2004 11:01:30




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 Re: Detroit diesel cylinder sleeves in reply to Josh, 01-16-2004 06:23:32  
Leave the ports alone!! And if you're running a turbo, use the turbo pistons!! Turbo pistons are lower compression, thus lower piston deck height, thus more room for compressed air when the turbo boost comes in, thus more horsepower!!!



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Larry from MD

01-16-2004 09:13:00




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 Re: Detroit diesel cylinder sleeves in reply to Josh, 01-16-2004 06:23:32  
No you are not correct.The exhast valves are open when the cylinder ports are open so the incomeing air pushes out the old as new comes in.don't mess with the ports.



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Josh

01-19-2004 05:19:43




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 Re: Re: Detroit diesel cylinder sleeves in reply to Larry from MD, 01-16-2004 09:13:00  
If you have ever fooled with a regular 2 stroke motor you'll know that a way to boost power is to raise the ports so you advance the cylinder port timing and increase duration. Please explain why this doesn't apply to a detroit.



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