Bouchie pipes

[Ron Jefferson]

Need a little help guys.

I have a couple of Scott's pipes here I'm planning to run once the ice melts off the pond. I was wondering if anyone could help me out on pipe length for either of these or point me in the direction of somebody you know that runs them. Oops in riggers.

First is a DD Nova .21. There may not be much adjustment here as Scott told me not to use a header and just use silicone tube from motor to pipe.

Second is a Vac .45. that I purchased the billet header along with the pipe. There's lots of room for adjustment here.

If I were guessing I would start the .45 at 10" and the .21 at 8" but would like to hear from those that have actually run these pipe with good success.

Thanks, Ron

 

[Stephan Peterson]

In a cracker box ?

 

[John Knight]

Ron,

A 10" long pipe is WAY too long for a 45. The engine will not get up to the optimal rpm range. You should be from 9-9.5" and no longer. I have run less than 9" before and ran well.

A 21 pipe should be inside of 8" as well.

 

[dave roach]

Ron

You mite check with Scott.I know that his pipes run a litle long because the way the pipes are made.

Dave

 

[Ron Jefferson]

Ron

You mite check with Scott.I know that his pipes run a litle long because the way the pipes are made.

Dave

Thanks Dave, I've sent Scott a few emails but he hasn't got back to me. I'm thinking he may be away or something.

 

[mark ham]

delete

 

[namba276]

I ran a bouchie pipe on a 21dd...a lot of rpm's but wouldn't pull much of a prop. It did much better with a cmd parabolic pipe.

 

[julianconde]

scotts pipes are build to be pushed all the way in to the engine meaning there not supposed to be used with headers at all coupler to the exhaust on the engine and squeeze the pipe all the way in. I have 21,45,67,101 pipes.

 

[charles siler]

Ron I had the same problem before I talked to Scott . These pipes are not ran the same way as the other's these pipes like a load to make power not large diameter props but small with more pitch or cupping. Talk more with Scott about it and you'll get more out of that pipe . Pass ya later Charlie

 

[shoboat]

Fellas,

Most do not run enough load with Scotty's pipes.

Also do not run them lean and keep them clean

for best results. Wish Spring would come soon,

-22 below zero this morning with hard water still.

Enjoy Testing,

Mark Sholund

 

[charles siler]

Haha Mark it was 44 above here where it's usually that here enjoy the coolness. Pass ya later Charlie

 

[Tom Kelly]

In a cracker box ?

Ron's 21 cracker box is sweet. It should be even faster with this new pipe.

 

[dave roach]

Any pictures Ron of the new cracker box.

 

[Ron Jefferson]

It's just an ABox Zippkits Cracker Dave. Tom and Steve think I'm switching over to the dark side but I'm really just building a fun boat for a change. Don't know if I'll ever race it but there's a bunch of guys around here that run them all the time and have a ball doing so. Should be interesting. It's my first attempt at gas.

 

[ALLAN YUEN]

It's just an IBox Zippkits Cracker Dave. Tom and Steve think I'm switching over to the dark side but I'm really just building a fun boat for a change. Don't know if I'll ever race it but there's a bunch of guys around here that run them all the time and have a ball doing so. Should be interesting. It's my first attempt at gas.

Will you buy CMB 27 Alpha ??

or Junk gas engine( Lawn or Weed killer mower) ?

 

[Ron Jefferson]

If I do want to race it Allan it will have to be stock Zenoah G260PUM. $170.00 from Gizmo's keeps me right on budget. Lol

 

[Randy Rapedius]

If I do want to race it Allan it will have to be stock Zenoah G260PUM. $170.00 from Gizmo's keeps me right on budget. Lol

Doesn't get cheaper than that eh Ron?

Welcome to the dark side. Lol