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Old 04-22-2014, 11:23 AM   #121
jetcycles
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Why not run a clamp on air cleaner similar to this one?
http://www.summitracing.com/parts/edl-1202/overview/
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Old 04-22-2014, 12:04 PM   #122
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Dammit jetcycles, i didnt do that because that would just make sense. Lol. I didnt know what to look for. That would be a lot better than my big ole uni.

Im able to get the bike running now. Its running reeeally rich though. So my thinnest drillbit through a 132.5 didnt do a whole lot of good.

Anyone know where a guy could get some big main jets, like 150-170 for a hitachi carb?
Im also open to using a different carburetor if it can be found somewhat inexpensively.
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Old 04-22-2014, 12:25 PM   #123
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I'm only familiar with those air cleaners as they are common on the antique vehicles that I like to play with. I see them for sale at most of the old car shows so you might want to keep an eye out for them locally. The Lone Star Deluxe is a small show in Tx City 4-26-14 and the Texas Hoedown is at Waller County Fairgrounds 5-24-14. There are a few small hot rod shops in the greater houston area that might be able to help you out, but you'll have to google them as I don't frequent any of them to know what they stock. I believe that nightsterrider (or something like that) is a vendor for several companies and he may be able to help you out. His company name is Holmes Hot Rods and Cycles.
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Old 04-22-2014, 12:46 PM   #124
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What size is the opening on that filter? I like the price, but didnt see a size on the fitting.

Also, im uploading a vidya to youtube. Its pretty much the worst recording ever. My phone in my hand, while operating the clutch. I think i got to 25mph.
I just took it down the street and back. I hit a couple of sweet spots and could really feel the torque pull. I came back home, made the video, and hauled around the house, through the grass. Its good, being out in the country.
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Old 04-22-2014, 02:01 PM   #125
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The link I provided states a 2 5/8" opening. . .but I only provided it as an example as I don't know your application.
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Old 04-22-2014, 02:12 PM   #126
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Ah, i didnt see.

I rigged up a line from the big open vacuum port to the stock location on the frame. It still pretty much runs like junk, and its drinking gas like crazy. I fixed the float sticking/cylinder flooding issue, but its still way rich.
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Old 04-22-2014, 02:18 PM   #127
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Originally Posted by loosenoose View Post
Ah, i didnt see.

I rigged up a line from the big open vacuum port to the stock location on the frame. It still pretty much runs like junk, and its drinking gas like crazy. I fixed the float sticking/cylinder flooding issue, but its still way rich.
spark plugs are fresh? correct plugs for the application?
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Old 04-22-2014, 02:22 PM   #128
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Yeah. Im pretty sure My drilled jet makes it run really rich. It ran better when it was lean, on the 132.5 main. Maybe something like 150 would be more optimal.
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Old 04-22-2014, 02:28 PM   #129
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Xv750 single carb tuning. Trial and error:
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Old 04-22-2014, 02:40 PM   #130
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What EXACT hitachi carb are you running? A quick google search suggest that Keihin main jets will fit it. Have you adjusted the needle clip position, if possible?
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Last edited by jetcycles; 04-22-2014 at 02:42 PM.
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Old 04-22-2014, 02:46 PM   #131
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Read this thread and then double check your jets and float height and report back.
http://pnwriders.com/mechanical-tech...o-xj750-2.html
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Old 04-22-2014, 02:48 PM   #132
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is it the HSC-40?

try here: http://jetsrus.com/a_jets_by_carbure...selection.html
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Old 04-22-2014, 02:49 PM   #133
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maybe you can call JetsRus and ask if these will fit your application. . .
http://www.jetsrus.com/a_jet_kit_str...J-K_VIRAGO.htm
Or see if these guys can answer the same question. . .
http://www.sudco.com/hitcarpar.html
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Old 04-22-2014, 02:55 PM   #134
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I can't find anyone selling Hitachi jets over a 134...

My guess is that if you need something over a 134, you'll have to get some drill bits designed for carb jetting and make your own. I'd suggest talking to old VW (or probably even any hot rod) guys as this was the standard way of rejetting back before widespread aftermarket support.
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Old 04-22-2014, 02:58 PM   #135
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http://xjbikes.com/Forums/viewtopic/...c/p=83262.html

Read through here. It sounds like 132 may even be too big... you're still using dual carbs, right?
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Old 04-22-2014, 03:01 PM   #136
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I dont think i can change my needle clip with this carb. This is one of the two stock hitachis that came with the 1981-83 yamaha virago 750's. Yamaha used a different carb after 83
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Old 04-22-2014, 03:02 PM   #137
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Ah, im on tapatalk. Didnt see all these replies. Thanks for the reading. Once i get home i'll have to sit down and check it out. Thanks
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Old 04-22-2014, 03:17 PM   #138
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Jae, no, im using a single carburetor
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Old 04-22-2014, 03:45 PM   #139
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Back at home. Tearing the carb down again. I spotted the k star logo on my pilot jet. Yay!
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Old 04-22-2014, 04:47 PM   #140
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I don't know why I hadn't done the sooner but I replaced my cheap oem-style petcock with my good one original petcock and the bike runs a lot better now. I also did a lot of scrubbing in the nooks and crannies of my carburetor and I put it all back together and its running better but still not great. I got up to 65 but I know it's almost out of gas so I didn't want to go any further than that until I can fill up all my gas cans.
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