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Outboard pipe advice needed

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Outboard pipe advice needed

Old 12-11-2006, 03:24 PM
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skoda450
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Default Outboard pipe advice needed

Can I use a tuned pipe from a .21 or 3.5cc truck or buggie on my K&B 3.5cc outboard? What pipe will work? I know I need a different header. If not, where do we get pipes for the outboards?
Old 12-11-2006, 05:59 PM
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Jerry Dunlap
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Default RE: Outboard pipe advice needed

Two places to get a tuned pipe for a 3.5 OB are Cooper Pipes (417) 358-4114 - [email protected] - Lynn Cooper

Or HTB Boats - (901) 424-4597 - htbboats.com - Mark Hopper

JD
Old 12-11-2006, 06:56 PM
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skoda450
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Default RE: Outboard pipe advice needed

Thanks JD. I sent e-mail to Lynn requesting info. Could you compare the performance of the two (Hopper vs Cooper)for me? And, if you have experience with them, what is the starting tuning distance. Never messed with a pipe this small before.
Old 12-12-2006, 05:34 PM
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Jerry Dunlap
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Default RE: Outboard pipe advice needed

I have found both pipes work equally well. The Cooper Pipe cost a little more, but it is a muffled pipe. The Silver Bullit pipe is louder, but you can purchase an ad-on muffler can that reduces the sound level. Both Lynn Cooper and Mark Hopper are dedicated model boaters.

JD
Old 12-12-2006, 07:12 PM
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jetpack
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Default RE: Outboard pipe advice needed

There's lots of car pipes out there, and considered implementing one myself but after balancing the work involved in making a header that can snake around to balance the pipe side to side I gave up because getting a header the right length and shape I had in mind, I deemed it to be too long to tune.

If your willing to sacrifice "looks" and strange hanger shapes (ie: upswept out the back or straight out the side) I suppose it could be done and be able to save a few dollars, but it would be all experimental so I just opted to buy a Silver Bullet and try it out. I'm completely happy with it's manufacturing but haven't run it yet.

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