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#1
05-01-2002, 06:37 PM
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Re: 23' twin engine blowout problem
Tony,
What is the engine center to center measurement?You can find by measuring from left mounting bolt center on one motor to left bolt center on other motor. d.h. [img]images/icons/smile.gif[/img] 
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#2
05-01-2002, 10:20 PM
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Re: 23' twin engine blowout problem
Hello guys-
DH would be the authority on this one. I have not checked the measurements on The Contender yet but regardless D.H. would know the best [img]images/icons/wink.gif[/img]
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#3
05-02-2002, 08:52 AM
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Re: 23' twin engine blowout problem
The measurement from the tiller of one engine to the other is 24.5". I was told it should be 26" and my transom height should be 30". ???? My transom center line is 30.5" I was told to cut my transom down to 30" and move engines to 26" centers. I do it in a heart beat if I was sure it was the cure...
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#4
05-02-2002, 11:24 AM
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Re: 23' twin engine blowout problem
Tony,
I need the engine centers! Not from the tiller,from the mounting bolts,as the motors probably have some toe in if they were installed correctly. d.h. [ May 02, 2002, 10:25 AM: Message edited by: HermCo ]
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#6
05-02-2002, 04:23 PM
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Re: 23' twin engine blowout problem
HA TONYS
I HAD A SIMILAR PROBLEM ON A SINGLE ENGINE OMC ONCE AT CERTAIN RPM I GOT CAVITATIONS. I TALKED TO THE PROP GUYS AT OMC AT THE MIAMI BOAT SHOW THEY TOLD ME TO GO WITH A 4 BLADED PROP I TOOK THEIR ADVICE AND NEVER HAD THAT PROBLEM AGAIN. I KNOW BUYING 2 PROPS TO TEST THIS OUT COULD BE $1,000 BUCKS BUT SOME PROP GUYS WILL LET YOU TEST OUT THE PROPS AND IF IT DOESN’T WORK WILL TAKE THEM BACK. THE OMC GUYS SAID THAT I COULD EVEN RUN MY ENGINE UP 1 OR 2 MORE INCHES HIGHER OFF THE TRANSOM NOW WITH THE 4 BLADED PROP. FELLOW-SHIP [img]images/icons/wink.gif[/img]
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#7
05-03-2002, 11:47 AM
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Re: 23' twin engine blowout problem
Good suggestion on the 4 bladed props. That should solve your problem. Another suggestion is to Contact Bob's Machine Shop in Ruskin, FL. They are world fameous for setting up shallow water flats boats. I think they could sell you a pare of aluminum plates that would bolt onto your existing cavitation plates. That may be a cheep alternative to help reduce blowout. Cutting your transom down seems scary and expensive. Moving your motors 1 1/2 inch further apart could be done with a cherry picker and a drill in about 3 hours. Then again, how often do you drive at 2000 to 2300 rpm's? You could just live with it.
__________________
Capt. Brian
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