B-PIPE on SXR?

Bigger header volume=more power/torque, need to port flange side of exh port to 46mm to make it work properly. I am going that route but going to build my own chamber
 

djkorn1

kidkornfilms
Site Supporter
Location
Cleveland Ohio
A B-Pipe and a Wetpipe have the same exact headpipe. The chamber is just shaped a little better on the wet, because there is more room. I see no advantage to running a B-pipe manifold or chamber.....(you can already swap the chamber if you want), but if the B chamber was better on an sxr, they wouldn't have bothered developing a new one.
 
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WET BOX

STL Crew
Location
STL
Wonder why Blowsion bothered to make the adapter plate?

There has to be something else to it.

Keep the info coming!

Later
 

Shonuff

I've got the glow
Site Supporter
Location
Memphis
I wondered the same thing since they're such a pain in the ass to find for the Yami guys anyway. Keep rollin' 'em, WB.
 

shawn_NJ

Chasing waves.
Location
Daytona Beach
I had a ported (48mm) factory kawi "a" headpipe, SJ MOD chamber, with a ported (48mm) 650 westcoast manifold on my 750sxi bottom/sxr cylinder motor. I am sure the sxr chamber is better, but it ran real good. (and more importantly fits nice in an X2).

Here is when I had it on a 750sxi motor.
780_1.JPG
 
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A B-Pipe and a Wetpipe have the same exact headpipe. The chamber is just shaped a little better on the wet, because there is more room. I see no advantage to running a B-pipe manifold or chamber.....(you can already swap the chamber if you want), but if the B chamber was better on an sxr, they wouldn't have bothered developing a new one.
Yami is bigger at manifold, area=48mm dia, kawi is 43mm dia, manifold is the secret, painful to port kawi to that size
 

shawn_NJ

Chasing waves.
Location
Daytona Beach
Yami is bigger at manifold, area=48mm dia, kawi is 43mm dia, manifold is the secret, painful to port kawi to that size

And if you try to go that big on a stock 650 (3bolt pattern) manifold, it will crack. I have never held a 750 FP manifold, is it the same thing as a 650 manifold but with larger ports?
 
Get a Westcoast Kawasaki 650 manifold (meaty enough to bore) and have Group K bore it to 48mm and port match it to the B pipe (also to 48mm). They just did mine and it looks fantastic. Putting it on this weekend.
 

dbrutherford

Parts Whore
Location
Fairmont, WV
And if you try to go that big on a stock 650 (3bolt pattern) manifold, it will crack. I have never held a 750 FP manifold, is it the same thing as a 650 manifold but with larger ports?

Pretty much. I have one I will have to measure it to compare the ports. I know the head pipe to manifold diameter was smaller than what everyone recommends (47 or 48mm). So went the WC route being it had the solid top.

I have no clue how the FPP 800 SXR wet pipe manifold matches up. It looks identical to the 750 FPP manifodl I have which looks very similar to a 650 stock manifold. Note teh 750 FPP manifodl I have was for the XiR pipe, not the 750 SX/SXi B pipe which had the funny twisted 3 bolt pattern on it.

DBR
 

Jetski Jess

how fast is too fast?
Location
No mans land
Okay I have a question about this. Is the bolt pattern the same from the kawy 750/800 wetpipe manifold as the yamaha B headpipe? All that would need to be done would be to portmatch the two? is this correct? or are the two completely not even compatable.

Crap disregard the user name, I did'nt see my wife had logged on.
 
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A B-Pipe and a Wetpipe have the same exact headpipe. The chamber is just shaped a little better on the wet, because there is more room. I see no advantage to running a B-pipe manifold or chamber.....(you can already swap the chamber if you want), but if the B chamber was better on an sxr, they wouldn't have bothered developing a new one.

Korn are you sure about that ?
I recently broke one of the three head pipe bolts (SXR Wet pipe), and when I tried to replace it with one of my old B pipe screw... I saw that the Yami B pipe screw were shorter than kawi Wet pipe screw.
I think that the kawi headpipe is thicker thant the yami one. I didn't checked that as I don't anymore have the yami one.

If someone could check that...
 

dbrutherford

Parts Whore
Location
Fairmont, WV
Supposedly the Yamaha one is a hair thicker where the three bolt pattern is (manifold to head pipe mating surface/gasket). Otherwise they are essentially the same.

That three bolt pattern was originally used on the Kawasaki 650 engines. Factory pipe just made a new manifold that bolts up to the Yamaha engine but still allows use of the Kawie style three bolt head pipe/gasket.

On an SXR they are basically just using a Kawasaki 650 style exhaust manifold. It even has a mount bolt hole that isn't used on any of the pipes they sell.
 

Proformance1

Liquid Insanity
Site Supporter
Vendor Account
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New York Crew
Blowsion claims that they mad this in case you already had a SJ wet pipe and switched to a SXR. there are no perf guarantees expressed or implied. LOL
 

dbrutherford

Parts Whore
Location
Fairmont, WV
Blowsion claims that they mad this in case you already had a SJ wet pipe and switched to a SXR. there are no perf guarantees expressed or implied. LOL

I assume you mean this adapter plate they sell?

I thought it was so you could run a Yamaha dry pipe instead of the SXR dry pipe. Say the R&D pipe whih was only made for the Yamaha engine. But I am assuming again. I would love to try a Power factor pipe on an SXR.
 

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Supposedly the Yamaha one is a hair thicker where the three bolt pattern is (manifold to head pipe mating surface/gasket). Otherwise they are essentially the same.

That three bolt pattern was originally used on the Kawasaki 650 engines. Factory pipe just made a new manifold that bolts up to the Yamaha engine but still allows use of the Kawie style three bolt head pipe/gasket.

On an SXR they are basically just using a Kawasaki 650 style exhaust manifold. It even has a mount bolt hole that isn't used on any of the pipes they sell.

So if I'm reading this correctly, I should be able to get a Kawy manifold and match it to my Yamaha head pipe? This would be optimal for the SXR I just purchased for the wife. As I would like to take benefit of already having the Head pipe off her waveblaster and my extra SJ chamber I also have. Can any body confirm what I am thinking. I would much wrather use the kawy mani as opposed to buing the adapter from blowsio. Sorry I'm not attempting to thread jack here but I too am pondering using a B-pipe on the SXR
 
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