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| 250 WHP Supernatural 3.4 Build (Page 17/47) |
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Will
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DEC 11, 10:22 PM
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| quote | Originally posted by Blacktree:
Either you misunderstood what I said, or you're trolling... not sure which. |
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IVC is on the opposite end of the intake valve event from IVO... which is where overlap occurs.
IVC dictates dynamic compression.
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Blacktree
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DEC 11, 10:38 PM
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Option #3: I had a brain fart. You're absolutely correct. I meant to write 'duration' but accidentally put 'overlap' instead. Because camshafts with lots of duration usually have later IVC timing. (they also have more overlap  )[This message has been edited by Blacktree (edited 12-12-2017).]
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unboundmo
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DEC 12, 01:26 AM
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Is there a formula to find out what your compression is supposed to be verses doing an actual compression test? A formula for Static compression and dynamic compression.. since they are different
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La fiera
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DEC 12, 08:09 AM
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| quote | Originally posted by unboundmo:
Is there a formula to find out what your compression is supposed to be verses doing an actual compression test? A formula for Static compression and dynamic compression.. since they are different |
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Divide your compression test results by 14.7 or whatever altitude air pressure you are at. That will give you an idea of what you have.
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Blacktree
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DEC 12, 12:42 PM
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^ Yep
Ambient air pressure is 14.7 PSI at sea level, less at higher altitudes. Divide your compression test results by the ambient air pressure and that will give you the dynamic compression.
If you don't have a compression gauge or don't want to bother, you can estimate your DCR with this calculator: http://www.wallaceracing.com/dynamic-cr.php
Note that you'll need to know the intake valve closing spec for your camshaft, in order to use the calculator.
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La fiera
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DEC 16, 08:40 PM
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Just waiting to go back to the dyno to prove 250WHP on iron heads. I think I'm taking it for a ride tomorrow! 
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unboundmo
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DEC 17, 12:46 PM
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Looking forward to it!.... maybe a video recording of the breakthrough record as it's done?
Edit to say----> don't lose your flashlight 👀[This message has been edited by unboundmo (edited 12-17-2017).]
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unboundmo
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DEC 17, 01:29 PM
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----- so just to keep track on this thread
What did you add / subtract from the last dyno to the new dyno run coming up?....
The new Y-pipe section for the exhaust... right?... anything else?
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La fiera
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DEC 17, 06:00 PM
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| quote | Originally posted by unboundmo:
----- so just to keep track on this thread
What did you add / subtract from the last dyno to the new dyno run coming up?....
The new Y-pipe section for the exhaust... right?... anything else? |
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Upgraded injectors and fuel pump. And then this happens...............!!!
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Patrick
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DEC 17, 06:21 PM
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| quote | Originally posted by unboundmo:
Looking forward to it!.... maybe a video recording of the breakthrough record as it's done?
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x2 
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