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31' copeland race cat

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Old 09-16-2019, 03:29 PM
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Default 31' copeland race cat

I am restoring/building an old popeyes race cat. Ive got kaama surface drives and twin 454 mercs. I wanna do something one off just have some technical questions that are above my mechanic abilities. Im looking at twin turbocharging both motors. The engine bay is wide open so space is not an issue. I have plenty of ventilation so im not that concerned with heat. The issue ive been googling and cant seem to get a good answer is how to get passed the water/exhaust coming out of the block and into the manifolds and risers than out of the exhaust. Water in a turbo is all bad. Ive been reading about dry exhaust but still doesnt get me passed the water coming out of the block. Any help? I plan on doing this all myself. Not looking for 50k set up. Im not rich. Lol thanks in advance!
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Old 09-16-2019, 06:04 PM
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Location: Plano, TX
My Boat: 1997 Advantage Victory 27
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I saw this listed

https://dallas.craigslist.org/sdf/bp...962219014.html
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Old 10-11-2019, 10:37 AM
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That looks like a good deal! Gale Banks setup; either "like" or actually a version of the Mercruiser 475 package. You can see how the water goes through the turbo cooling housing, and then back into the tailpipes. The water-cooled turbo covers worked very well at keeping heat to a reasonable level. The Banks setup also has a unique draw-through plenum with poppet valves under the carb. that allowed for easy starting and idling. Pretty ingenious and worked really well.

We had a 38 KV Scarab with similar package and made an easy 675 HP with a few simple mods. Wish I had it today, knowing what I do about turbocharging. Boat was 11,000 # and would cruise all day at 55 MPH. Topped out at about 75.

Let's see some pix of the cat!!!

JB
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Old 10-15-2019, 11:15 AM
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I see he has dropped the price both motors 4k

https://dallas.craigslist.org/sdf/bp...998174499.html
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