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| Author: | hillaholic [ Wed Jun 24, 2009 1:04 am ] |
| Post subject: | Dual 44 IDF jet help |
Need some suggestions on what to change in my jetting. Looks like its running a little rich  Engine specs 2332 110 cam 11 to 1 compression ratio Ported stock heads with 40 x 35.5 valves Autocraft ratio rockers (don’t know what ratio) MSD Distributor MSD off road ignition MSD High vibration coil NGK B6HS Plugs gapped to 40 Dual 44 idf’s with CB upgrade kit Jetting F-7 Tubes 130 Mains 160 Air corrections 55 Idles |
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| Author: | Odyknuck [ Wed Jun 24, 2009 8:20 am ] |
| Post subject: | Re: Dual 44 IDF jet help |
For that size motor your air corrections are a little on the small side. Also the oil on the threads is an Indication that your burning oil and not nessasarly running too rich. Its appears you may have a little of both conditions. |
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| Author: | Baddvw [ Wed Jun 24, 2009 2:30 pm ] |
| Post subject: | Re: Dual 44 IDF jet help |
I am running 44's with an upgrade kit from CB Performance with F-11 tubes, 65 idles, 145 mains, 200 air, and some backing off on the accelerator pump. I have tried over $400 worth of jets and adjustments and this is the best I can get, I even bought a set of F-7 tubes and it made the motor run like it got a set of IDF 40's (like it is WAY too small) This is a 2276cc with 44x37.5 S/E heads, FK-7 cam, 1.4:1 rockers, all MSD goodies, Champion 810 plugs gapped at .055 inch. You can wipe your finger inside the exhaust pipe and it is not black at all, not even a smudge. |
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| Author: | chris38375 [ Wed Jun 24, 2009 4:32 pm ] |
| Post subject: | Re: Dual 44 IDF jet help |
looks like its burning pretty good |
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| Author: | derwood [ Wed Jul 01, 2009 2:30 pm ] |
| Post subject: | Re: Dual 44 IDF jet help |
Somtimes it is not as complicated as it may seem. Sounds to me like your float needs adjusted. Your Bowl may be filling up to high. When it comes to off-road the float level is very important. If your bowl is filling up to far you will run very rich no matter what you do to the jets. Are both sides of your engine showing the same signs or is one side worse? |
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| Author: | hillaholic [ Mon Jul 06, 2009 11:47 pm ] |
| Post subject: | Re: Dual 44 IDF jet help |
The jets I posted were wrong. They were off my old single 44idf. I just checked the dual 44 idf and they have 55 idles 145 mains F11 emulsion tubes 200 air I put new NGK’s in before my last trip and had to pull them when I rolled it. The plugs looked like new after 4-5+ hrs of hard riding. Also the floats have been set to 15mm suggested by Weber for hard off-road. |
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| Author: | Odyknuck [ Tue Jul 07, 2009 11:23 am ] |
| Post subject: | Re: Dual 44 IDF jet help |
Ok, thats more like what you should have in those carbs. When you say the plugs look like new, are the porcelins still white? |
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| Author: | hillaholic [ Tue Jul 07, 2009 7:50 pm ] |
| Post subject: | Re: Dual 44 IDF jet help |
Odyknuck wrote: Ok, thats more like what you should have in those carbs. When you say the plugs look like new, are the porcelins still white? They looked brand new, It looked like I just put them in. It was just after the roll so that might have washed them off. It would hardly crank over and was dumping gas out of the exhaust. I’m riding this weekend at Walhonding Hills Campground so I will pull them after that trip and post some pictures. |
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| Author: | RaceBugg1098 [ Wed Jul 08, 2009 11:03 am ] |
| Post subject: | Re: Dual 44 IDF jet help |
Does it always run bad, or just sometimes, like when climbing, or going over rough stuff? Do you still have the choke bodies on them? |
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| Author: | Odyknuck [ Wed Jul 08, 2009 11:34 am ] |
| Post subject: | Re: Dual 44 IDF jet help |
Ok, Keep an eye on them because setting the float to 15mm has leaned out the carbs. White plugs = lean condition and is not good. Rejetting may be required. hillaholic wrote: Odyknuck wrote: Ok, thats more like what you should have in those carbs. When you say the plugs look like new, are the porcelins still white? They looked brand new, It looked like I just put them in. It was just after the roll so that might have washed them off. It would hardly crank over and was dumping gas out of the exhaust. I’m riding this weekend at Walhonding Hills Campground so I will pull them after that trip and post some pictures. |
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| Author: | Roy [ Wed Jul 08, 2009 5:40 pm ] |
| Post subject: | Re: Dual 44 IDF jet help |
Try the floats at 12. |
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| Author: | hillaholic [ Tue Jul 14, 2009 11:34 pm ] |
| Post subject: | Re: Dual 44 IDF jet help |
Here they are after my last trip. 110 fuel, trail riding and a few small hills, about 6hrs total riding time. What do you think?    
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| Author: | chris38375 [ Tue Jul 14, 2009 11:48 pm ] |
| Post subject: | Re: Dual 44 IDF jet help |
looks fairly good ,,maybe a little rich,if so you run on ur idle jets probaly 75% of the time,u might need to go down 2.5 on your idles jus to try it |
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| Author: | RaceBugg1098 [ Wed Jul 15, 2009 8:12 am ] |
| Post subject: | Re: Dual 44 IDF jet help |
They look good to me. You are running pump fuel, right? |
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| Author: | redrail1915 [ Wed Jul 15, 2009 8:54 am ] |
| Post subject: | Re: Dual 44 IDF jet help |
looks like #2 is lean not bad |
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| Author: | Odyknuck [ Wed Jul 15, 2009 9:00 am ] |
| Post subject: | Re: Dual 44 IDF jet help |
Those are running just fine. Now leave the the carbs alone and ride lol. 
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| Author: | hillaholic [ Wed Jul 15, 2009 11:42 am ] |
| Post subject: | Re: Dual 44 IDF jet help |
RaceBugg1098 wrote: They look good to me. You are running pump fuel, right? I'm running 110 with 11 to 1 compression |
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| Author: | Roy [ Thu Jul 16, 2009 3:10 pm ] |
| Post subject: | Re: Dual 44 IDF jet help |
Looks damn close to me. #2 is a bit lean, fatten it up some. |
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| Author: | RaceBugg1098 [ Thu Jul 16, 2009 3:19 pm ] |
| Post subject: | Re: Dual 44 IDF jet help |
If your running race fuel, it is a lot harder to read the plugs. The inside of my exhaust is white when I finish a race, but its not running lean. I just played with jets, and when we dynoed it, we could monitor the egt and they were all actually kinda low. i wanna say around 1100 degrees or so. But if you look at the plugs, you would say its lean. |
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