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Originally Posted by Marty H.
(Post 3097199)
Hey, Tom I'll look and see if I can meet up with you this summer in the bay, and you can drive your old boat!!!! Tyler Crockett did the motor work. 468 new cam, rods and pistions, stock heads with bigger valves, increased boost to 7lbs and dyno tuned. At the end of the day we ended up with 804hp @ 5400 rpms with good torque numbers too!!!!!!!!!
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I'll be putting it in for a test run this Thursday, gonna test with a 32, 4 blade prop. Hopefully I get the prop size right the 1st time, I'll let you guys know.
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Not gonna be big enough. I can tell you that right now. With a 1.5 gear ratio and 800hp I can turn a 32p Bravo 1 to 6300-6400 rpm. You will definitely need to either change gear ratios or get a much larger prop. Test it out first for sure, but i am pretty sure you will run well over 5400rpm with ease.
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Marty, what drive are you running? If it's a XR 1.36 lower gears might be the ticket....thicker too for all the torque.
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Well, I took the boat out today, nice day but very windy!! You guys we're right a 32 prop is not big enough. But it doesn't seem to be far away from where I need to be, revlimiter is set at 5650. Not sure if I hit it, but I was close to it. Has anyone tried a 5 bladed prop???? Trying to prop it to 5400.
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Originally Posted by Marty H.
(Post 3098935)
Well, I took the boat out today, nice day but very windy!! You guys we're right a 32 prop is not big enough. But it doesn't seem to be far away from where I need to be, revlimiter is set at 5650. Not sure if I hit it, but I was close to it. Has anyone tried a 5 bladed prop???? Trying to prop it to 5400.
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I also had a P-5 on mine when i got it. I wasnt a fan of it at all. it wasnt nearly as fast and it chine walked like crazy at anything over 85mph due to the massive stern lift. It was a 29p.
What kind of speeds were you seeing? I am suprised that it was even close to working out for you, considering how low your rev limiter is. The only reason I say that is because with similar hp and a 32p bravo 1 I run through 5650rpm with ease, all the way up to 6300. |
took it back out today. I watched the tack realy good. 32 is not even close 93mph hitting the rev . still have lots of throttle left.I'll make calls monday to see about getting 1.3 ratio
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Originally Posted by Marty H.
(Post 3099976)
took it back out today. I watched the tack realy good. 32 is not even close 93mph hitting the rev . still have lots of throttle left.I'll make calls monday to see about getting 1.3 ratio
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2 Attachment(s)
Some more progress. Before and after shots:
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