Checkmate speeds
12-14-2008 | 10:28 PM
#91
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From: Derby, KS
Use to have a 1996 Convincor 242 with a blown 540. Fastest it ever ran was at a radar run in Richmond, VA in 2002. With 15lbs of boost and 150hp NOS kit it ran 110.3 mph. Pics below is of the motor after it came out of the 242 and went into my cat. Sold the boat to some dude from OH in 2003. Bow-tie block, 9:1 JEs, custom Crane cam, AFR heads, Crower SS roller rockers, Whipple Inner-cooler, TBS 10-71, Nickerson carbs, and a whole lotta KE parts...
Wow, that's brutal. How did that hull handle at 110mph???
12-14-2008 | 11:53 PM
#92
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From: Look out shoals
Use to have a 1996 Convincor 242 with a blown 540. Fastest it ever ran was at a radar run in Richmond, VA in 2002. With 15lbs of boost and 150hp NOS kit it ran 110.3 mph. Pics below is of the motor after it came out of the 242 and went into my cat. Sold the boat to some dude from OH in 2003. Bow-tie block, 9:1 JEs, custom Crane cam, AFR heads, Crower SS roller rockers, Whipple Inner-cooler, TBS 10-71, Nickerson carbs, and a whole lotta KE parts...
12-16-2008 | 02:49 PM
#93
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From: Fairfax, VA
Believe it or not it was fairly stable. As stable goes for a 24ft boat at 110mph. The key was having full hydraulic steering and the delta pad bottom design. Once the boat rocked back on the pad it more or less just sat there. I know you won't believe it, but very little chine walk. The 242 Convincor is an awesome boat! Pic below was with first generation motor. The original 454 with a 177 blower. When I dropped the 540 I had to scoop the sunpad.
12-17-2008 | 08:20 AM
#95
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From: Fairfax, VA
I have a few other pics, but they have to be scanned. Owned the 242 before I got into digital pics. As for the name, after the Checkmate I owned a 28 Commander Cat that ran 112mph with same motor (though de-tuned with only 8lbs of boost, no NOS and pump gas). So I changed board name to Commander112.
01-03-2009 | 02:25 PM
#96
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From: Fredericksburg, Va
my 89 251, no galley, with a 489, 177 blower @ 6-7 psi and a 26 bravo 1 ran 80.4, but did not have hyd steering(yes I know) only tested a few times, handling became a experiance to say the least ! and pulled the blower set-up for a n/a 509 which I put in end of the season...
02-17-2009 | 06:32 PM
#98
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From: EASTON MA.
vinny what rpm are you getting wfo with the px5 and do you have a top speed with a b1 prop thanks, just bought two new props for my new motor b132/p5x30 I think the b1 would be faster but I could be wrong my wfo tach will be 6400 red line. thanks for any info like if you ran a 26 or 28b1 thanks again art ps I heard the px5 handles better than b1 too?
02-17-2009 | 07:00 PM
#99
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From: long island, new york
I can spin that 25" P5X to 6100 rpm. That equates to about 12% slip @ 85 mph. Impressive considering I am running a -2 shorty. A long time ago, I ran a 26" B1 . At the time, I had a standard length Imco lower. I dont remember what rpm or speed I got out of that prop, but I do remember pulling the stick back because the engine was revving higher than I wanted. At this point, I dont know how or if my set up would run with a B1. All I know is that the P5X seems right for now. I can pull up on plane easily, turns great, jumps waves, what more can I ask for?
02-17-2009 | 07:17 PM
#100
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From: EASTON MA.
I can spin that 25" P5X to 6100 rpm. That equates to about 12% slip @ 85 mph. Impressive considering I am running a -2 shorty. A long time ago, I ran a 26" B1 . At the time, I had a standard length Imco lower. I dont remember what rpm or speed I got out of that prop, but I do remember pulling the stick back because the engine was revving higher than I wanted. At this point, I dont know how or if my set up would run with a B1. All I know is that the P5X seems right for now. I can pull up on plane easily, turns great, jumps waves, what more can I ask for?
cut down on chine walk so I HOPE TO HAVE THE 572 IN BY MAY JUNE. Art
