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Old 28-01-2007, 06:50 PM   #1
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Country: uk
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Occupation: Marine engineer
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Boat name: Apmarine Racing
Boat make: Phantom 21, Manerfelt 23, Donzi 28zx
Engines: Merc XR2, Merc xs, 2 x 350Mags
Cruising area: plymouth/looe/fowey

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Question Help lol

Hi guys what should a xr2 rev up to when racing! had so many people say differen things!!
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Old 28-01-2007, 07:05 PM   #2
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Very much depends how its propped, but a healthy motor is good for low 7's I believe.
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Old 28-01-2007, 07:08 PM   #3
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Country: uk
Location: looe
Occupation: Marine engineer
Interests: boating/shooting/water sports
Boat name: Apmarine Racing
Boat make: Phantom 21, Manerfelt 23, Donzi 28zx
Engines: Merc XR2, Merc xs, 2 x 350Mags
Cruising area: plymouth/looe/fowey

Join Date: Oct 2006
Location: looe
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Quote:
Originally Posted by Johnny Boat Dude View Post
Very much depends how its propped, but a healthy motor is good for low 7's I believe.

ok i have heard that 6500 to 6800is ideal!!
and most say over 7000 will just blow the power head
my engine is blue printed and i think i am swining a 24 on a p21
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Old 28-01-2007, 07:23 PM   #4
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7000 typically. 7200 tops. Any more, might stay together, might not. Do you feel lucky?
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Old 28-01-2007, 07:26 PM   #5
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Country: uk
Location: looe
Occupation: Marine engineer
Interests: boating/shooting/water sports
Boat name: Apmarine Racing
Boat make: Phantom 21, Manerfelt 23, Donzi 28zx
Engines: Merc XR2, Merc xs, 2 x 350Mags
Cruising area: plymouth/looe/fowey

Join Date: Oct 2006
Location: looe
Posts: 252
Quote:
Originally Posted by Matt View Post
7000 typically. 7200 tops. Any more, might stay together, might not. Do you feel lucky?
lol not at the mojo lol cheers for tha addvice!
al
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