B pipe manifold diameter

[Speedfreak]

Mine is also clearenced for PV and that requires taking material off the sides as well. Pretty thin but worth it for a PV motor :cheer:

Ok I was going to ask WTF was yours hacked up for but now I understand ... gotta do whatcha gotta do

 

[cambo au]

i might have to try it right after i moove house

 

[SkiDaddy]

Are there pipes other than the 42mm & 47mm? I measured mine and another and they were both 44. I also have a spacer thats 44mm as well.

That'a why mine seized - it's a 650 headpipe.:banghead:

 

[douglee25]

So for a non PV motor, the consensus is around 45 - 46ish mm? I have a brand new pipe sitting in a box and I haven't had the chance to measure it (out on business at the moment).

 

[Speedfreak]

So for a non PV motor, the consensus is around 45 - 46ish mm? I have a brand new pipe sitting in a box and I haven't had the chance to measure it (out on business at the moment).

Not reall outlet size is formulated by what kind/size of motor you have. I have a non PV motor and was told that I needed a 49mm outlet. I have a 5mm ada motor with 86mm bore which converts to 848cc. The motor ran last year with a 42m outlet and I was told that it was a monster. I can't wait till this year.

 

[douglee25]

Not reall outlet size is formulated by what kind/size of motor you have. I have a non PV motor and was told that I needed a 49mm outlet. I have a 5mm ada motor with 86mm bore which converts to 848cc. The motor ran last year with a 42m outlet and I was told that it was a monster. I can't wait till this year.

Good point. How about for a ported 61x?

Doug

 

[Mark44]

Not reall outlet size is formulated by what kind/size of motor you have. I have a non PV motor and was told that I needed a 49mm outlet. I have a 5mm ada motor with 86mm bore which converts to 848cc. The motor ran last year with a 42m outlet and I was told that it was a monster. I can't wait till this year.

Ok so whip the equation on us Einstein.:haha: :haha: :haha:

Mark44 :cheer: :cheer:

 

[WAB]

The motor ran last year with a 42m outlet. can't wait till this year.

Me too, can't wait to see if there is a difference. I've been running a 42mm 650cc one and just opened it up to 45-46mm last night. :Banane01: Just used a drill and a rasp bit.

 

[Fro Diesel]

Can someone enlighten me on what a "rasp" bit is. I want to do this mod asap since i have the crappy 650 head pipe.

 

[#ZERO]

Those rasp bits are for wood. :crazy:

You need a carbide burr with a cylindrical radius end number SC-6 or SC-7.

Also a large diameter sanding band tool with 50 or 80 grit bands work well too for enlarging the exhaust manifold and head pipe.

 

[Fro Diesel]

Those rasp bits are for wood. :crazy:

You need a carbide burr with a cylindrical radius end number SC-6 or SC-7.

Also a large diameter sanding band tool with 50 or 80 grit bands work well too for enlarging the exhaust manifold and head pipe.

Thanks, that is what i thought too. Thanks again mang. :headbang:

 

[750SX]

Im running mine at 45mm.