2 into 1 intake manifold

I have a 2 in 1 coming out my left side, i have a ss super shorty carb on there and just had it jetted. My left side is running leand and my right side is running rich, it runs fine in idle but my right side cuts out mid range rpms, then if i go full throttle my right side runs just fine. I put a pamco kit in it with an e advancer a little while ago and that has helpped. My question is can i fit a piece of rubber hose in my right intake pipe to lean it out a little bit or what do you guys think?
 
No, i used to work in at a bike shop and my boss made it for me. Im looking into getting a new one but i dont know where i could find one that would be good for the ss
 
look for one or have one built with equal lenght runners if you build one of the 1/2
moon type have the carb intake tube as close to the center as pos. I know JOE WISEGUY make one and now he sell a kit on ebay hope yhis helps
 
did your boss make an intake using a single or two piece mounting base?
if you weld up the intake and this is done NOT on a jig or old cyl head the base will either warp (single base unit) or be misaligned (two piece base units) from heat distortion. it sounds like to me that you have a vacuum leak problem. how did you test to find one cyl rich and the other lean? usually with vac problems revving the motor in three diff rpm modes does not even out the problem. you may have a restriction inside the manifold too. but by changing your spark advance you mentioned the bike ran better? wonder if you have valve issues as well. my first inclination is that you have manifold mounting (sealing) issues. I have been making intakes for a dozen years now for the xs650, xv viragos, and the kawi doubles. and I have jigs made for all to weld up otherwise failure is almost a sure thing.
 
ok man. i bought one of your 2 into 1 and the carb with it as well. i love it. but, i just have a carb question more so, so i figured this would be the appropriate threaD. BUT i got everything hooked up and what not and kicked it over and that thing was winding to the moon and back so i had to turn it off real quick, the air fuel mixture screw is all the way in (richest setting) and the idle screw is screwed out a good ways too and i kicked it over again and it still just very high rpms. so basically my question would be, has anybody else experienced this? and solution would be to put bigger jets correct? i also have to twist the throttle a few times before kicking it so i have a fair assumption its just not getting enough fuel. thanks.
 

Hi Joe,
and they look real nice, too.
BUT
They all have one inlet tract longer than the other which makes it eff nigh impossible for both cylinders to get the same fuel mix.
How about you make one of those elegant frames of yours with a down tube with a big hole in it or with a double down tube so a symmetrical single carb manifold can fit through it.
 
your pilot jet is too small. bump it up to a 35 and adjust the air-fuel screw accordingly. most of the intakes i have sold use the 25 pilot and 200 main, but that is a starting point for a few. i now have three different type 2 into 1 intakes for these bikes. a low slung one for the chopper, bobber bikes. a different one for the tracker cafe bikes which sits high and has the carb almost centered off the left side backbone. the mikuni VM 36mm carb has shown the best results in low, mid, and top end ranges. i am doing testing right now on a new twin tunnel ram intake for jetting recipee now.

hey man, just got an intake and carb from you. when i kick it over it idles, it just idles really high, still responsive to the throttle though. it just idles pretty damn high. so i was just curious if i should go up a size in jetting...or could this be from timing. I'm also running pamco ignition and pma. so I'm curious as to if the timing could have something to do with that idle so high. but i have the fuel/air mixture screw all the way in and it seemed to help a hair. and the idle screw is turned out a good bit. but it is still really high idling. so basically are there any tips? like i said prior, jets? timing? both?
 
How would I go about checking for air leaks? Everything is metal intake wise. So can't really have a cracked boot. And that's what I'm trying to figure out through joewiseguy I got the carb from him and it's a vm36 I'm assuming 22.5 jet? But I could be wrong.
 
Well the gasket meeting the intake to the head could be leaking. Same for the carb to the intake. Start the bike up and spary carb cleaner around those junctions, if the idle drops theres your problem. I'd also pull the fuel bowl and actually see what jets are in there. No carb straight out of the box is going to be turn key. I also just bought one of wiseguys intakes, and from what I have researched there pretty easy to tune.

Posted via Mobile
 
Ok, had a main of 190 and pilot of 22.5 just changed them to 200 and 25 and it helped a little bit but it's still pretty high rpm and the enriched is all the way in and the idle screw is out a good ways
 
Also sprayed some carb cleaner around the gaskets and it didn't fluctuate at all... Is it possible I just need higher jetting? I figured the 200 and 25 were pretty standard for these contraptions.
 
First rule of thumb when carb tuning, make one change at a time. I'd go up to 27.5 (if you have one) and see what happens. I'll bet your pilot jet is to small. Also I found a mention of removing the air bleed screw.

Have you had a look at tee cat's thread? Lots of useful info in there.

Posted via Mobile
 
Back
Top