Are you the first guy to actually have muffler bearings for the fans in the exhaust?
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Are you the first guy to actually have muffler bearings for the fans in the exhaust?
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Not IMCO's. They look like Zoomers. We used them in the past. The "propeller" is restrictive and costs HP. We've removed them and made gains, but increases the noise level quite a bit. The IMCO mufflers are way less restrictive.Quote:
Originally Posted by niceguyeddie
Thanks for the info. Have you compared them on the dyno?Quote:
Originally Posted by B&D Marine
I have not as it would be almost impossible to duplicate the exhaust, load, etc. as installed in a boat. I did a comparison on the lake. Zoomers with "propeller" 5300 rpm's, without "propellers" 5500, IMCO Gatlins 5625, no mufflers 5800. 540 BBC EFI 725 HP @ 6000Quote:
Originally Posted by niceguyeddie
I have not as it would be almost impossible to duplicate the exhaust, load, etc. as installed in the boat. Zoomers 5400 rpm's, Zoomers without "propellers" 5525, IMCO Gatlin's 5650, no mufflers 5800. 540 BBC 725 HP @ 6000.Quote:
Originally Posted by niceguyeddie
Steve, that thing looks amazing. Should have no trouble spotting you two on the river next year.
That's a beautiful boat! Congratulations and Merry Christmas to you and Sue!
Came out great Steve and Sue You got the whole package there
I like your Avatar. Is that supposed to be....ummm....ah nevermind :DQuote:
Originally Posted by JBS
How's the bambino??
Merry Christmas to you guys!!
I was hoping to quiet and slow the boat down...I don't like driving over 80mph with out tabs...
the motor is a merc stock 525... nodigg say he went in the 90's with his...
might need some tunnel tabs...or drive it slower...
wasn't try'n for all out top speed or we would have used different power..
to cruise 65 not on pin was the quest.....