b-pipe puttin hole in my hull?

[lhpsj]

Where the pipe runs along the port side of the boat it is rubbin against the fiberglass. On the outside underneath the bond line i can see where it has rubbed away about a inch section and the weld in the pipe is exposed. Its not a whole lot but it is a hole! What should i do? Do i wait till im ready to pull the pipe out and put a few layers of cloth over it?

thanks

 

[Big Kahuna]

1. repair the damage,
2. you need to rotate the pipe to get it away from the hull, or take a rubber mallet and beat the pipe to flatten it out some so you will have proper clearance.

 

[monsterSJ]

and then putt hydroturf where it gets close that will eliminate that prob
but ya u deff dont got it in right must rotate it to where it dosent rub

 

[Mark44]

1. repair the damage,
2. you need to rotate the pipe to get it away from the hull, or take a rubber mallet and beat the pipe to flatten it out some so you will have proper clearance.

What BK said. I had to do the same.

Mark44

 

[GUMP]

i fixed my problem by align the motor correctly

 

[WAB]

My roundnose hull is heavily reinforced with carbon fiber and the limited chamber has rubbed through the CF. I don't think I can rotate it so it does not rub and I don't want to dent it. It's about a 3inch spot. Any ideas?

 

[Bonzia Bob]

My roundnose hull is heavily reinforced with carbon fiber and the limited chamber has rubbed through the CF. I don't think I can rotate it so it does not rub and I don't want to dent it. It's about a 3inch spot. Any ideas?

Turf, replace as necessary

 

[Big Kahuna]

drill a hole on the opposite side of the hull so you will match.............. sorry, could not resist.......

you really need to dent it, get a block of wood and a hammer, lay the block where you want to relief the pipe, give it a few nice wollops..........

 

[GUMP]

My roundnose hull is heavily reinforced with carbon fiber and the limited chamber has rubbed through the CF. I don't think I can rotate it so it does not rub and I don't want to dent it. It's about a 3inch spot. Any ideas?

i made pipe side be 1.5mm higher then carb side so pipe is clear from bottom hull

 

[Jawbreaker]

Machine the exhaust side of the cylinder down 1/8 inch. You will then have plenty of room. :fing02:

Thanks for the tip Toby.

 

[oxnard111]

Machine the exhaust side of the cylinder down 1/8 inch. You will then have plenty of room. :fing02:

Thanks for the tip Toby.

is that 1/8" enough to make the ports not match up on the cylinder and the exhaust mani?

 

[Matt_E]

Hurrr....that'll make the chamber effectively shorter.

 

[oxnard111]

Hurrr....that'll make the chamber effectively shorter.

I'm dumb... 'splain what you mean matt

 

[750SX]

I'm dumb... 'splain what you mean matt

Less bottom?

 

[Big Kahuna]

Hurrr....that'll make the chamber effectively shorter.

dont think that would be the same as cutting the chamber 1/8" shorter... there is no control of the sonic wave leaving cylinder to manifold........... all of that is controlled from the headpipe to the waterbox

 

[Idok]

even if you cut the chamber an 1/8" shorter, you wont notice the difference....

you could even go SHORTER than that........and not notice the difference

 

[Matt_E]

dont think that would be the same as cutting the chamber 1/8" shorter... there is no control of the sonic wave leaving cylinder to manifold........... all of that is controlled from the headpipe to the waterbox

Think about it....the total path is 1/8 inch shorter.

 

[suva]

Think about it....the total path is 1/8 inch shorter.

I think the difference would be minimal if material were taken off the manifold mounting point. If you took 1/8 off in the middle of the chamber you might notice a difference only because the volume reduced would be significantly larger.

I don't think either is enough to get worked up about, I've tried spacing the two halves of my coffman's chamber 1/2-3/4 and it didn't make a noticable difference.

 

[Matt_E]

I know it ain't much. But it's not about volume, it's about distance to travel for the exhaust.
In any event, not enough to make a difference.

 

[THRUST]

use the rubber mallet and be 9 out of ten b pipes do this on a factory hull .