Engine oil pressure
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Engine oil pressure
dfree383 August 11th 2009, 10:39 am
Just looking at Franks back up monster motor dyno sheet, I noticed the oil pressure drop then pick back up. Any theories on what that might be?
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Re: Engine oil pressure
dfree383 August 11th 2009, 1:44 pm
Frank you have a vacuum pump on that thing?
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Old blue Racin Team- Posts : 1579
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Re: Engine oil pressure
havinfun August 11th 2009, 9:36 pm
I think on the dyno sheet it says yes it has a pump.
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Frank Merkl- Posts : 1524
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Re: Engine oil pressure
Frank Merkl August 12th 2009, 10:19 am
I just checked all 11 runs and there all the same ,the oil pressure drops at the same range and then goes back up . Which I thing is due to the loose clearances that I run on the crank .0035 rods and mains ,looking at the old dyno sheets from my 600 it does the same thing and the bearings are always happy in it ! both motors also run a 5 stage peterson dry sump with a .875 pressure stage riven at 55%
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Re: Engine oil pressure
dfree383 August 17th 2009, 3:11 pm
It wasinteresting to see the pressure going to 80 with the juice on, I'm thinking the crank case pressure is spiking because of blow by?
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