KRMit Posted April 8, 2004 Report Share Posted April 8, 2004 I might have found someone I can get the Trinity CV Manifold kit from. He doesn't know what size carb is on it and neither of us know how to tell the difference. He said it looks like the one in the picture on Trinity's site, so at least it's probably one that comes in their kit. Therefore it's probably the 33 or 35mm, but how can ya tell? I guess it depends on the size of the carb, but can anyone give a little jetting advice as well? Dude's bike had a lot of mods so I'm sure it's going to be too rich for me and I have no idea where to start. I'm at about 500 ft elevation and my mods are listed in my sig. Thanks! Quote Link to comment Share on other sites More sharing options...
jeepman380 Posted April 8, 2004 Report Share Posted April 8, 2004 I would start out with a 180-185 main and a 50-55 pilot. Quote Link to comment Share on other sites More sharing options...
sredish Posted April 8, 2004 Report Share Posted April 8, 2004 Measure the inside with a gauge to know for sure. They are very similar carbs with all the same parts, it's hard to tell without measuring. Jeepmans got you set on a good starting point. Quote Link to comment Share on other sites More sharing options...
KRMit Posted April 8, 2004 Author Report Share Posted April 8, 2004 Thanks for the suggestions. I'll try that jetting when I get it. What exactly do you measure? Won't I need to know the size of the carb to get the jets or are they the same? Quote Link to comment Share on other sites More sharing options...
sredish Posted April 8, 2004 Report Share Posted April 8, 2004 Thanks for the suggestions. I'll try that jetting when I get it. What exactly do you measure? Won't I need to know the size of the carb to get the jets or are they the same? All the internals of the 33 and the 35 are absolutely the same part. The jets included. If you want to get technical, there's a nut and a brass idle adjuster that the 33 doesn't have, but everything else is the same. And other than 4 or 5 parts the 33m to the 39mm are the same. If you were to order parts, it wouldn't make a difference which is 33 and which is 35, the only difference is the bore size. Quote Link to comment Share on other sites More sharing options...
GONRIDIN Posted April 8, 2004 Report Share Posted April 8, 2004 They will use the same style of jet. To mesure the bore size use a set of calipers(in mm) and mesure the distance across the middle. Some carbs have a slight taper to them so you may have to take a couple of mesurements. One inside as close the slide as you can get, and one as close to the oppening where the boot meets the carb as possible. It may not be exact. For example it may be like 33.3 instead of a true 33mm. Quote Link to comment Share on other sites More sharing options...
cam2 Posted April 8, 2004 Report Share Posted April 8, 2004 if the carb came from trinity then it's most likely a keihin. if you look on the side just above the bowl there will be a series of letters and numbers stamped there. if you see 70R within the series of L&N's then it's a 35mm, if you see S46 within the L$N's then it's a 33mm. Quote Link to comment Share on other sites More sharing options...
KRMit Posted April 8, 2004 Author Report Share Posted April 8, 2004 That's what I wanted to know. I'll send the info to dude and hopefully he can figure it out. Thanks guys! Quote Link to comment Share on other sites More sharing options...
banshee76179 Posted April 8, 2004 Report Share Posted April 8, 2004 Say krmit, I have the 33 I'm 600 ft...50 pilots,"until it gets hotter", 185 main,air screw 2 turns out,...needle 4th clip!.. everything subject to change in about a week or two! Quote Link to comment Share on other sites More sharing options...
KRMit Posted April 16, 2004 Author Report Share Posted April 16, 2004 70R was on the carb so I guess it's the 35mm. He's also throwing in a set of VForce reeds. How does that change the jetting? Quote Link to comment Share on other sites More sharing options...
sredish Posted April 17, 2004 Report Share Posted April 17, 2004 if you see 70R within the series of L&N's then it's a 35mm, if you see S46 within the L$N's then it's a 33mm. hmmm, never really noticed. i'll have to look for that series of numbers. Quote Link to comment Share on other sites More sharing options...
cOoLDeviL Posted April 17, 2004 Report Share Posted April 17, 2004 mine has the same number 70R on it so im safe from the small 33mm is that right ? Quote Link to comment Share on other sites More sharing options...
KRMit Posted April 19, 2004 Author Report Share Posted April 19, 2004 mine has the same number 70R on it so im safe from the small 33mm is that right ? Sounds like it. What mods do you have done to your bike? Does it seem real rich with the bigger carb? Quote Link to comment Share on other sites More sharing options...
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