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Originally Posted by relaxalot
(Post 3462464)
I would think that the 710 would be faster than the 600 if they both were stock. If the Merc has been reflashed with a different pulley then it should run away from the Ilmor...
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yes the problem seems to be the setup.
I think the problem is bow lift with these deck boats. relaxalot and others say that the P5X is the best running prop. From what I understand P5X is a bow lifting prop with a little extra transom lift due to the 5 blade. The ilmor boats don't respond the same to the p5x. Would higher prop rpm and lighter engine cause the transom to lift more making an even bigger problem with bow lift? What can be changed with the bravo prop to decrease transom lift? |
Originally Posted by IlmorDonzi
(Post 3462493)
When did you do the test at Donzi with the Ilmor?
What boat or boats were used in the test? What drives were used in the test? Thanks. The 38 ZR and 43 ZR Bravo XR's, Imco's and no.6's I bet you allready knew that Dolph :) |
I think one problem with the setup is the difference in the engine weight in the back of the boat. It should slip more with an Ilmor. When big blocks were removed from my velocity and Ilmors installed the boat was sitting about
2" higher out of the water. The major difference between the merc's 600's or the 700's is the Ilmor has an advantage of about 30 to 35% better fuel economy. |
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