WB2 with Bpipe

M

mississippisquirrel

Location
Texas
Hello. I picked up a waveblaster 2 with a bpipe on it. it sat for some time. Im going through carbs and gas tank currently. When I opened up the carbs it appears that the jets and seat are not stock. I would like to know the stock jetting/seat and also recs for jetting and seat.

I have seen lots of different #'s in posts so far that vary greatly from the bpipe site.

Mine are as follows.
1996 Waveblaster 2, b pipe, 760 motor. carbs have the riva flame arrestors (Butterflies are still in)
110 main
120 pilot
seat 2.3
spring?
when I pulled carb apart these were the settings mag: L 1 7/8, H 1.5 PTO: L 1.75 H 1.5

Below are some of the settings I saw on the xh20 website and on the bpipe site.
1. 44's with 1.5 N/S 120 pilot and 135 main with a factory pipe

2. 760 WaveBlaster II / GP760 1997 Main Jet: 130 Front Carb / 132.5 Rear Carb Pilot Jet: 115 High Speed Screw: ½ turn Mag/1 turn PTO Low Speed Screw: 1 ½ turns out Needle & Seat: Stock Spring: Stock

3. 760/superjet
2.0 N/S
95G
100M
120P
 
W

WB800BLASTER

X
Location
Plymouth, MA
depends on the pipe. When you say B pipe are you just call it that cause its from Factory pipe? Pick will help as even b pipes there are different ones. LTD, MOD then there B2 or Raider.
 
yamabro

yamabro

GP Performance / Patterson Powersports
Location
Dickson, Tn.
Factory pipe made those. RIVA offered and sold them with their testing and R&D and ons such as water injection.
 
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C

camper357

Location
Oregon
Looks like someone tried reverse jetting for that pipe and probably for good reason. That motor with the oem carbs did not seem to like aftermarket pipes. Group K has a write up on their site regarding their attempt at jetting with a protec pipe. Basically group K could not keep that combination from doing a lean seize at mid range rpm without race gas. Also, there used to be an old thread on pwctoday from 15+ years ago from a well respected guy who tried that factory/riva pipe on a blaster 2. He ended up with the same mid-range lean seizure problem that group K had. His fix was different carbs, dual 38s or aftermarket dual 44s but not the oem 44s. The oem carbs are different than dual 44s you can buy out of a catalog from mikuni. I would suggest removing the cylinder on that engine to see if the rear cylinder is showing signs of lean seize. If it looks good I would try running that reverse jetting before going back to the suggested recommendations. I have that same pipe sitting in the garage. I have not ran it yet, but I have a set of dual 38s that I will try when I get around to installing it. For what it is worth the guy I got the pipe from was rebuilding his seized gp760 and wanted to go back to a stock pipe.
 
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davidescu_radu

davidescu_radu

sea riders
Location
Constanta,Romania
any more info on this? I have modded a sj protec pipe for a b2 with zeel ignition and stock carbs with bigger jets and 700 62t head - ported cases - and was running ok - but used mostly on racing - means no time for mid range
 
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