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Old 09-06-2006, 07:31 PM   #1
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how fast??

what would be the rough top end on a p18 with an old 225?
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Old 09-06-2006, 07:35 PM   #2
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70-75 ish
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Old 09-06-2006, 07:42 PM   #3
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ta jon,quick enough for me
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Old 09-06-2006, 10:10 PM   #4
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Re: how fast??

Quote:
Originally posted by michaelcaine
what would be the rough top end on a p18 with an old 225?
Quote:
Originally posted by Jon Fuller
70-75 ish
No not in the rough, more like mid 60's for a skilled driver!!!

But being serious though my P20 does high 60's maybe 70 at a push with an old 225, jetted up, relieved exhaust and carb plate (no air box). 2 hole CLE 22.5 small hub laser 2 turning about 6800rpm
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Old 09-06-2006, 10:21 PM   #5
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The boat in the 'Rumble on the River' video, is a std P18 of about '88, with a 2.4 200, also '88 (old 225) with stock lower unit, and at the time of the video, a stock ali 25" merc prop.

It would pull an honest 6200 rpm on flat water, indicating mid 70's. I reckon it was a true 70.
I never got to play with motor height, or different props, as the customer really just wanted it for skiing, and it did that job pretty well. So once rigged (twoz new), and tested ( ) it went to the happy customer, and I only saw it for the odd service etc.

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Old 09-06-2006, 10:38 PM   #6
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Yeah but that river was flat, I've seen the vid!!!
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Old 10-06-2006, 07:55 AM   #7
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i used to get about 73 with a 200efi
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Speed costs weight so what do we cut off first
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