brian Posted August 22, 2006 Report Share Posted August 22, 2006 :baseball_wibble: anyone with any info on setting up carbs for alcohol? I got a pair of stock carbs that were set up for alcohol, but they did not have needles and slides with them. I used the same ones from my gas carbs. It idles and runs, but runs poorly when opening throttle and riding through the first couple of gears. When it hits pipe in third gear it pulls hard and will run ok (wot) through the rest of the gears. I moved needles down from 4th to 2nd groove, it only made a small improvement. I dont think lowering them to the first groove will make a huge difference, but I dont know cuz i dont have alot of experience with tuning anyway. also, can the plugs be read the same when running alcohol ? Quote Link to comment Share on other sites More sharing options...
txalky Posted August 23, 2006 Report Share Posted August 23, 2006 You need to change your needles for sure, alky needles are thinner and longer(sharp points not blunt). Plug reading is the same but harder being the fuel burns cleaner and cooler, takes longer to change colors. Remember fat on alcohol is better than lean. Quote Link to comment Share on other sites More sharing options...
brian Posted August 24, 2006 Author Report Share Posted August 24, 2006 alky needles are thinner and longer(sharp points not blunt). Thanks, Do you have any idea on what kind of needles I should look for (from a kit, or specific manufacturer) ? There are not many ATV shops here that are very savy with mods. Quote Link to comment Share on other sites More sharing options...
txalky Posted August 24, 2006 Report Share Posted August 24, 2006 I don't know on needles for a set of stock carbs, mine are aftermarket 26's bored to 28 and I had A&S set them up for me. You might give one of the shops that post on here a call to see if they can help, for a cheap try you could put the needles in a drill and hold sandpaper and taper them down, I know it a redneck fix but have heard people doing it.lol Are you sure they are setup for alcohol? Emulcifier tubes bored? Have the extra pickup from the bowls to the throat? I would hate to see you burn a hole in the pistons running lean on stock setup. Quote Link to comment Share on other sites More sharing options...
txalky Posted August 24, 2006 Report Share Posted August 24, 2006 PM sent. Quote Link to comment Share on other sites More sharing options...
brian Posted August 26, 2006 Author Report Share Posted August 26, 2006 alky needles are thinner and longer(sharp points not blunt). Thanks, Do you have any idea on what kind of needles I should look for (from a kit, or specific manufacturer) ? There are not many ATV shops here that are very savy with mods. I just got back from a local ATV shop (45 mi. from home). The guy there said that it wasn't possible to make a stock banshee carb run alcohol through it properly. I couldn't believe that he actually believes that shit. I know of people who have done it. When I get this thing running right, I'm gonna find him at the dunes and give him a 300 foot sand shower. Maybe that'll prove that it can be done. Quote Link to comment Share on other sites More sharing options...
dajogejr Posted August 27, 2006 Report Share Posted August 27, 2006 Stock carbs can be setup to run alky... However.... Since they're so small, and as I'm sure you're aware....you need to flow twice as much alky as you do gas, they're not the first choice. 33 to 35's are the normal choice for recreational/part time drag racers... Hard core drag racers go 39 and way up from there.... Head over to planetsand.com. They could probably help you better with that alky setup. However, you're going to get quite a few "you should get bigger carbs too" thrown in there.... Quote Link to comment Share on other sites More sharing options...
brian Posted August 28, 2006 Author Report Share Posted August 28, 2006 33 to 35's are the normal choice for recreational/part time drag racers... Hard core drag racers go 39 and way up from there.... "you should get bigger carbs too" Yeah, I know I should use bigger carbs to get the most benefit from the alky, but I'm broke and bored and just trying to maximize what I've got. Not to mention, now I feel like making it work cuz that guy said I can't. I did get it running pretty good yesterday. Left plug looked ok on chop, but the right one looked a little lean. I think it was starving the right bowl a little, so I stopped riding for now. I drilled the fuel feed port (on both carbs) larger, and drilled the float valve seat out +.030 larger to promote faster feed to the bowls. I ordered a Pingel fuel valve, for higher flow and to isolate the carbs so one wont starve the other. Hopefully those changes will help it work. We'll see................... :shrug: Quote Link to comment Share on other sites More sharing options...
txalky Posted August 28, 2006 Report Share Posted August 28, 2006 What are you doing to the jets? Changing them or drilling them? 1 Quote Link to comment Share on other sites More sharing options...
brian Posted August 28, 2006 Author Report Share Posted August 28, 2006 What are you doing to the jets? Changing them or drilling them? I have not changed any jets yet. After all those probs from b4, I pulled the carbs off to compare the jets to the ones in the gas carbs (interested mainly in the primaries b-cuz of the specific problem). When I did, I found out that my dumbass installed the slides/needles into the wrong sides when I changed them over the first time (slides were hanging on the cables while I did other work). The carbs were getting little to no air at 0-1/4 throttle. :shoothead: I put them back together (the right way) and wouldn't you know ? It ran much better ! :thumb: I did chop test and now dealing with the new issue. If I do need different sizes, I'll prolly change, not drill. When I did, I found out that my dumbass installed the slides/needles into the wrong sides when I changed them over the first time BTW, hard to admit that dumbass shit...lol Quote Link to comment Share on other sites More sharing options...
dajogejr Posted August 28, 2006 Report Share Posted August 28, 2006 Being a man and leaving it up there, not editing your post is more impressive. Shit happens bro...that's sometimes why it's better to walk away, have a cold one....and work on it later.... My friend who redid my motor for me keeps telling me meth...meth...meth.... When you think about it, you're not really saving money...since you burn twice as much. But...my fear is being at the dunes, running out...and that would be just my luck, too..... Quote Link to comment Share on other sites More sharing options...
txalky Posted August 28, 2006 Report Share Posted August 28, 2006 I hate when that happens. I just drill mine, bought 3-4 extra sets and drill up till it falls on it's face then go down a size or turn my metering valve closed some. I now have a summer set and a winter set and adjust from there. Are you going to run a metering setup or just try to run off the bowls(not recommended)? The only part of alcohol that I HATE is having to purge the motor everytime, that is a pain. Quote Link to comment Share on other sites More sharing options...
brian Posted August 28, 2006 Author Report Share Posted August 28, 2006 I Are you going to run a metering setup or just try to run off the bowls(not recommended)? Don't know what you mean ? Quote Link to comment Share on other sites More sharing options...
txalky Posted August 28, 2006 Report Share Posted August 28, 2006 My carb setup has a nipple JB Welded into the bowls and there is a metering valve also JB Welded into the throat of the carb on the filter side when you open the throttle extra fuel is sucked up and acts as a second main jet. If this makes sense. Quote Link to comment Share on other sites More sharing options...
txalky Posted August 28, 2006 Report Share Posted August 28, 2006 Brian you have a PM. Quote Link to comment Share on other sites More sharing options...
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