BigRed350x Posted December 15, 2006 Report Share Posted December 15, 2006 Alright, got that new banshee I posted in the images section. Anyway... it has 35mm Keihin Airstryker Alky carbs, and I have no experience with jetting alky. I know you can run them REALLY fat and the bike doesn't care for the most part, so I know to start rich as hell. Oh yeah, has dial-a-jet thingies in it too... 4mm stroke 35's w/ K&N Pods 4 Quote Link to comment Share on other sites More sharing options...
Banshee4Drag Posted December 15, 2006 Report Share Posted December 15, 2006 Hey big red GOOD luck....Lectron's are alot easier to jet right...But for the most part you have it jet RICH and work your way down...you also will want a pingel duel petcock, and i would HIGHLY recommand running a fuel pump on the bike...you need 4 times the AMOUNT of AKLY then gas... but a .110 sound about right it would not be that rich on .110 with a 4mill and pods with 4 plus timing.. the dial a jet is junk with AKLY in my eyes....that is mostly used for MX gas bike's... AKLY dont have the problems, they make there own bigger problem... remember ALWAYS purge the system after rideing never store the bike with akly in it....and akly is only good for 30 days shelf life unless its air tight.....but hey you can get like 10 more HP on a tuned right michene on akly... Quote Link to comment Share on other sites More sharing options...
BigRed350x Posted December 15, 2006 Author Report Share Posted December 15, 2006 Hey big red GOOD luck....Lectron's are alot easier to jet right...But for the most part you have it jet RICH and work your way down...you also will want a pingel duel petcock, and i would HIGHLY recommand running a fuel pump on the bike...you need 4 times the AMOUNT of AKLY then gas... but a .110 sound about right it would not be that rich on .110 with a 4mill and pods with 4 plus timing.. the dial a jet is junk with AKLY in my eyes....that is mostly used for MX gas bike's... AKLY dont have the problems, they make there own bigger problem... remember ALWAYS purge the system after rideing never store the bike with akly in it....and akly is only good for 30 days shelf life unless its air tight.....but hey you can get like 10 more HP on a tuned right michene on akly... Yeah, know about purging. Thanks. Don't know if they are called dial-a-jets or power jets or what, but its those little screw dealy guys that suck fuel from the bowls and feed it into the carb up top. I have a pingle and massive billet bowls on the carbs so I'm not at all worried about sucking it dry, just have to watch my fuel level when I'm out duning around. I'm at 7500ft so I imagine a .110 will be plenty rich. Not worried about shelf life of the alky, I can get it for free where I ride, and don't really plan on keeping a lot around the place, unless I'm going to walden or my ranch, then I will stock up before I go. Thanks for the advice, I will try a .110 when I go out riding on my next days off. - Jared Quote Link to comment Share on other sites More sharing options...
FASTOYS Posted December 15, 2006 Report Share Posted December 15, 2006 Red, You bought Mike's bike didnt you ? I was told that was a 350 on alky...?? I would ask whoever built the motor as that is usually the best route. Not sure about the dial jets style boosters but i have heard of guys running anywhere from .101-.130 all dependent on needle and setup. Does it run close now? Need to know more about your setup... is it stock cyl. or cub etc.? Quote Link to comment Share on other sites More sharing options...
dajogejr Posted December 15, 2006 Report Share Posted December 15, 2006 You can run a Mikuni fuel pump off a snowmobile and it will flow more than enough fuel out of a stock valve. You will need to drill and tap a barb on one of the intakes to get a "pulse/vacuum" to operate the pump. You will needs carbs setup for fuel pumps...otherwise, the normal run of the mill carbs will not flow enough gas, irrelevant if a pump is used or not. J... It's just like it seems for a powerjet. Close the valve (seated) is leaner, opening it is richer. I'd say start with a .120 main, too. Forget EVERYTHING you know about jetting for gas. Alky is the other end of the spectrum. You want to stuff as much alky in that motor just about to the point you hydrolock that som bitch. It takes roughly twice the amount of alky as gas. A few more things... I'd get B9EGV plugs, run benoil at about 24 to 28 to 1. I'd run benoil in my purge gas, 20:1.... They make a 1 gallon fuel can that can hang from your handlebars with a valve in it...perfect for purging!!! Quote Link to comment Share on other sites More sharing options...
SoCalinIt Posted December 15, 2006 Report Share Posted December 15, 2006 They make a 1 gallon fuel can that can hang from your handlebars with a valve in it...perfect for purging!!! Not trying to take over your thread big red, but I Quote Link to comment Share on other sites More sharing options...
dajogejr Posted December 15, 2006 Report Share Posted December 15, 2006 Lemme see... Here's one: http://www.wickedatv.com/DUportal30/home/d...hannel=Products Quote Link to comment Share on other sites More sharing options...
SoCalinIt Posted December 15, 2006 Report Share Posted December 15, 2006 Lemme see... Here's one: http://www.wickedatv.com/DUportal30/home/d...hannel=Products Thanks man! I just found one on eBay for about $20 cheaper. Thanks again! Quote Link to comment Share on other sites More sharing options...
s-540 Posted December 16, 2006 Report Share Posted December 16, 2006 i have 39 pwk's on a 4mil cub drag ported and was told to run: .120 to .123 main .120 to .123 on the dump tube .055 pilot dgh needle 1 power jet on each carb hope that helps Quote Link to comment Share on other sites More sharing options...
Malott 1 Posted December 16, 2006 Report Share Posted December 16, 2006 (edited) You can run a Mikuni fuel pump off a snowmobile and it will flow more than enough fuel out of a stock valve.You will need to drill and tap a barb on one of the intakes to get a "pulse/vacuum" to operate the pump. You will needs carbs setup for fuel pumps...otherwise, the normal run of the mill carbs will not flow enough gas, irrelevant if a pump is used or not. J... It's just like it seems for a powerjet. Close the valve (seated) is leaner, opening it is richer. I'd say start with a .120 main, too. Forget EVERYTHING you know about jetting for gas. Alky is the other end of the spectrum. You want to stuff as much alky in that motor just about to the point you hydrolock that som bitch. It takes roughly twice the amount of alky as gas. A few more things... I'd get B9EGV plugs, run benoil at about 24 to 28 to 1. I'd run benoil in my purge gas, 20:1.... They make a 1 gallon fuel can that can hang from your handlebars with a valve in it...perfect for purging!!! I am probably about 800-1000ft above sea level and I run the same carbs. I started out with .120 mains and 55-60 pilots and had my powerjets 4 turns out. On alky I run my timing +8. I use benoil at 32-1 and I purge at 18-1 also run the b9egv plugs gapped at .18. I just took my time and slowly leaned the bike down till I found the sweet spot. Everybody sets there bikes up differently but I like running a larger main and small pilot. I ended up with 118 mains and 46 pilots with the needle on the top clip and my powerjets are about 2 turns out. The bike is still a little fat but with my setup mine only runs wide open. I thought this might just give you an example of similar carbs and try and help. But just remember start out fat. Like said above that bike is going to go thru twice as much fuel now its on alcohol. Edited December 16, 2006 by F.A.S.T 1 Quote Link to comment Share on other sites More sharing options...
BigRed350x Posted December 16, 2006 Author Report Share Posted December 16, 2006 Can I do a plug chop like I would with gas on this thing? How do I check my jetting on alky? I don't even want to run this thing until I can get an idea of where I want everything to be with jetting. Now I'm thinking I will start with like a .120 main, but at my altitude I think it will be pretty rich at that. Everyone says rich is better though, so that's what I will do. I'm going to pull the carbs tonight and see what needles and pilots are in there and measure the dump tubes etc. Thanks for the help, keep the comments comming everyone! Oh yeah, and this is a 4mil stock cylinder ported (dunno by who yet) I will do a compression check tonight. I know timing is set at +4. - Jared Quote Link to comment Share on other sites More sharing options...
BigRed350x Posted December 16, 2006 Author Report Share Posted December 16, 2006 OK tore the carbs all apart tonight and cleaned them... good thing I did. the .101 jets that were in the carbs actually measured out to .113. LOL After I saw that I pulled them completely apart so I knew what I was dealing with for sure. I got a bunch of my old jets and drilled them out since I was down at the shop tonight. Here's what I had on hand in the way of drill bits, so this is what I now have for jets.... .098 .101 .106 .110 .113 .120 .125 .128 Here's what I have in the carbs right now... Main: .120 Pilot: 58 Needle: EGN on middle clip Powerjets: 4 Turns out. K&N POD Filters, 7500ft and its about 35 Quote Link to comment Share on other sites More sharing options...
dajogejr Posted December 16, 2006 Report Share Posted December 16, 2006 I think you're more than fat enough to get a good feel for it. Quote Link to comment Share on other sites More sharing options...
majicmike Posted December 16, 2006 Report Share Posted December 16, 2006 (edited) I think you're more than fat enough to get a good feel for it. Red im am suprized that the neddle says egn thats a gas needle I would get a egq for sure also im sure that the "needle jet tube" the tube that the main jet screews in to is only .113 becuase thats should be what stock was. If you dont drill that out to .120 then nomatter what jet you put in it it will never flow more than .113. Always check your jets never asume that they are what they say they are even if you drill them. you should start with a 120 and play with the timing alcohol loves timing but for the small jet that was in there much over +5 and it was detonating. just clean them up real good and check jet sizes dont forget that the pilet afects the whole rpm range and if it seems fat on the low end and you lean it you need to add fuel on the big end. P.S. I would not try to drill the needle tube out more than .120. you may want some mains like 118 and 116. We were running .120 in robs 10mm with the power jets closed on kod and it was snowing and cold also I would mix my methanol at 28:1 kyle is the same so is rob Edited December 16, 2006 by majicmike Quote Link to comment Share on other sites More sharing options...
BigRed350x Posted December 16, 2006 Author Report Share Posted December 16, 2006 Red im am suprized that the neddle says egn thats a gas needle I would get a egq for sure also im sure that the "needle jet tube" the tube that the main jet screews in to is only .113 becuase thats should be what stock was. If you dont drill that out to .120 then nomatter what jet you put in it it will never flow more than .113. Always check your jets never asume that they are what they say they are even if you drill them. you should start with a 120 and play with the timing alcohol loves timing but for the small jet that was in there much over +5 and it was detonating. just clean them up real good and check jet sizes dont forget that the pilet afects the whole rpm range and if it seems fat on the low end and you lean it you need to add fuel on the big end.P.S. I would not try to drill the needle tube out more than .120. you may want some mains like 118 and 116. We were running .120 in robs 10mm with the power jets closed on kod and it was snowing and cold also I would mix my methanol at 28:1 kyle is the same so is rob Thanks man! Quote Link to comment Share on other sites More sharing options...
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