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Workshop => Carburetor, Intake, and Exhaust => Topic started by: Saber569r on January 04, 2016, 08:52:20 AM
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Maxed out my jetting done at hassy drags, got to a 220 and still felt lean. Would 44mm lectron be a better set up? I only run the hill and straight drags.
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Maxed out my jetting done at hassy drags, got to a 220 and still felt lean. Would 44mm lectron be a better set up? I only run the hill and straight drags.
That'd work or run a smart carb on that motor like I did
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That'd work or run a smart carb on that motor like I did
Been thinking about getting the smart carb but 38 might be too small. Can a smart carb be bored to 40.5? That be the way to go?
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Been thinking about getting the smart carb but 38 might be too small. Can a smart carb be bored to 40.5? That be the way to go?
I ran a billet 40 with a Q05 rod
https://technologyelevatedco.com/product-category/large-billet-smartcarbs/
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Maxed out my jetting done at hassy drags, got to a 220 and still felt lean. Would 44mm lectron be a better set up? I only run the hill and straight drags.
Are you running Alky? What carb do you have now? If on 110 that 220 is huge compared to what my 363 ran. 0Ft of elevation, 40.5mm Kehein, Shearer OOF, VF3 I was running below a 170 main I think.
That'd work or run a smart carb on that motor like I did
You run alky through the Smart Carb?
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Are you running Alky? What carb do you have now? If on 110 that 220 is huge compared to what my 363 ran. 0Ft of elevation, 40.5mm Kehein, Shearer OOF, VF3 I was running below a 170 main I think.
You run alky through the Smart Carb?
Rupp I did not, this is a 110 motor that Matt told me when I had the pipe built would take a huge jet the volume and length of pipe is huge for an inframe.
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Are you running Alky? What carb do you have now? If on 110 that 220 is huge compared to what my 363 ran. 0Ft of elevation, 40.5mm Kehein, Shearer OOF, VF3 I was running below a 170 main I think.
You run alky through the Smart Carb?
I ran vp 110, 220 main still felt lean but ran great, Its a brand new 40.5 from Eddie.
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Saber, what does the plug look like?
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A littltle white but never ran over 180 degrees.
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If it's just a drag bike I'd run a Lectron. Call Dennis Packard and have him set one up for you with the big bowl
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Hills and straight drags...get a Alky dome,call Packard for lectron and put another 20 horses on that bad boy!!!!!����
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Hills and straight drags...get a Alky dome,call Packard for lectron and put another 20 horses on that bad boy!!!!!����
Been thinking of having Pete cut me one. Just can't get alky up here. Only place to get is a hour and a half away. Theirs a vp outlet in Phoenix.
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Check local race engine shops for cars for alky too. I ran a 44 and a 48 lectron on my pro x on alky
On gas 40.5 and yes 168 and below on the jets shearer pipe
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A hide a way spot that people over look is a cart shop or go cart racing shop the keep tons of Alky!!!!
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Been thinking of having Pete cut me one. Just can't get alky up here. Only place to get is a hour and a half away. Theirs a vp outlet in Phoenix.
There should be some guys in Flagstaff that have sprint cars or midgets that have drums of methanol or can tell you where they get theirs.
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I'm thinking of doing this set up, how hard is tuning with alky? Im at 7000 feet so cloud be a pain.
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Can Pete get a lectron for me I'd pefer to have my builder set up the carb?
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Lectron is the easiest carb to tune on the market. I could tell you within a turn or two on the pj at 1500' and below, however I know at 7000' it will need LESS fuel so that's not helpful. I wouldn't hesitate to go to a lectron. They can be had for 250-350 with billet bowls all day long used. The bowl will need the right side front section modified to fit well on a honda, case clearance. Or go with CP bowl for a Honda, they are already built with the clearance.
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...................... I could tell you within a turn or two on the pj at 1500' and below, however I know at 7000' it will need more fuel so that's not helpful. I wouldn't hesitate to go to a lectron. ..............
Didn't you intend to say you will need LESS fuel at 7000' than at 1500'?
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Didn't you intend to say you will need LESS fuel at 7000' than at 1500'?
Ahhhhh. Yes, I will edit that post so no one reads it wrong. Sorry bout that
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Theirs a Packard racing 44 on eBay right now. Bowl looks billet but I doubt it notched for the r cases.
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Could just do that or do I need to buy the Packard set up?
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Pay close attention to the slide, that is where they wear as it is all aluminum. Should have to the two relief holes drilled into the slide near the top too, reduces the pressure on the slide so it will close. I suggest two pj's as you will start out fat and need the extra fuel. With all that said, Packard setup would be close to plug and play.
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It has been a long time since I have done any flow testing on the Lectrons. Lectron measures their carbs differently than Mikuni or Keihin. Keihin and Mikuni rate their carbs based upon what the minimum diameter of the airflow passageway is through the carb.
Example:
Keihin 38mm PWK has an airflow passageway that has a minimum internal diameter of 38.0mm. The end of the airflow passageway where the carb plugs into the rubber reed manifold is about 39 to 39.5mm. A TM 38 Mikuni has similar internal airflow passageway diameters as the 38 PWK.
Some 48mm Lectrons airflow passageways have a minimum diameter of 46mm while other 48mm Lectrons minimum airflow passage way is 43 to 44 mm. I am not sure what the minimum diameter is on the 44 Lectrons but I suspect that it is probably 2mm to 3mm smaller than 44mm.
So what I am trying to say? If you are wanting more airflow than what a 41.5 or 42.0mm Keihin or Mikuni has, you may need a Lectron that is larger than a "44 Lectron".
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I've ran a 40.5 Keihin, and a 44 Lectron. The 44 made more power. As Jerry stated, going bigger then 44 may be beneficial.
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48mm will work on A 363?
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48mm will work on A 363?
Short answer, Yes. I know there are people running 48's on ESR 370's with good results, however user preference. Personally had great results with the 44 on my setup.
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shoot just go 48mm I would say, if your draggin at hassy. for everything else you cant beat the throttle response of the PWK
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shoot just go 48mm I would say, if your draggin at hassy. for everything else you cant beat the throttle response of the PWK
90% will be up here at 7000 feet.
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I was talking to Pete about doing a solid 370 dune motor for me and we got on the topic of carbs, I told him I had a 39 PWK "Is there anything else you'd prefer or recommend " Throw a 48 Lectron on it!" was the first thing that came out of his mouth, I chuckled and said, "I wanna dune this thing, not just drag race!" he starts laughing and tells me, "Well, I guess that PWK will be fine then" jokingly.
But honestly, I wouldn't doubt you could run a 40 or 44 Lectron and be SET. Give Pete a call. You know he's gonna get ya situated!