another, bogs at takeoff after warm up
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another, bogs at takeoff after warm up
Hi everyone, my 95 elite sa50 bogs at take off. only for the first few feet. when it warms up.
So when it's cold it take right off. then it warms up ,and it bogs for the first few feet at every take off. after that it runs fine.
this is what I have installed: polini 72cc head kit boost port matched. 8.4.1 rear gears, 1000rpm center rear spring & 3 -1000 clutch springs, 92 jet on stock carb, stock air box drilled, drill out the stock exhaust pipe. keli speed variator.
I cleaned out the carb twice. and adjusted it many ways. no luck.
any info on this problem would be appreciated. thanks.
P.S. the polini head only has about 25 miles on it.
I have another elite same setup but no boost port matching and it run perfect 50-55mph.
So when it's cold it take right off. then it warms up ,and it bogs for the first few feet at every take off. after that it runs fine.
this is what I have installed: polini 72cc head kit boost port matched. 8.4.1 rear gears, 1000rpm center rear spring & 3 -1000 clutch springs, 92 jet on stock carb, stock air box drilled, drill out the stock exhaust pipe. keli speed variator.
I cleaned out the carb twice. and adjusted it many ways. no luck.
any info on this problem would be appreciated. thanks.
P.S. the polini head only has about 25 miles on it.
I have another elite same setup but no boost port matching and it run perfect 50-55mph.
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Last edited by ped on Sun Nov 03, 2013 9:42 pm, edited 3 times in total.
Life's a trip enjoy the ride.
94 elite SR, 86 spreedio, polini corsa, keli variator, 8.4, jet. speed 65 mph
spreedio video. https://www.youtube.com/watch?v=BZr46_-douQ
94 elite SR, 86 spreedio, polini corsa, keli variator, 8.4, jet. speed 65 mph
spreedio video. https://www.youtube.com/watch?v=BZr46_-douQ
- swimmingfree
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Re: another, bogs at takeoff after warm up
pull the bystater and test it ...
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se50 crank...
SpreJunk 87elite in a spree body
ruckus variator , 3.5 tire , 1500 drive face spring , a 64 bbk ,
8 gram rollers, stock carb , after market air filter and 105 jet
Re: another, bogs at takeoff after warm up
Gregg's right...test the bystarter because it could be failing to shut off the enrichening circuit and causing a rich condition once warmed. Good place to start...
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- paulpauly7
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Re: another, bogs at takeoff after warm up
or the pilot jet is to small in the stock carb and when the choke shuts off theres not enough fuel till you twist the throttle more and start engageing the main jet
86 Nifty Fifty (spree)
ZX disk brake
Kitico 120kmh speedo
AF18 ZX ported
Polini corsa
Malossi crank
CTmani
24mmOKO
40pilot118main
Scorpion pipe
8.44 to 1
Michelin s1
71.3mph
92 yz125, 94 crm250
ZX disk brake
Kitico 120kmh speedo
AF18 ZX ported
Polini corsa
Malossi crank
CTmani
24mmOKO
40pilot118main
Scorpion pipe
8.44 to 1
Michelin s1
71.3mph
92 yz125, 94 crm250
Re: another, bogs at takeoff after warm up
Thank you all. I will check the bystater. and the carb.
Life's a trip enjoy the ride.
94 elite SR, 86 spreedio, polini corsa, keli variator, 8.4, jet. speed 65 mph
spreedio video. https://www.youtube.com/watch?v=BZr46_-douQ
94 elite SR, 86 spreedio, polini corsa, keli variator, 8.4, jet. speed 65 mph
spreedio video. https://www.youtube.com/watch?v=BZr46_-douQ
Re: another, bogs at takeoff after warm up
hi paul, I see what your thinking. I was thinking about the pilot hole and cleaned it. if I port matched the head I think I may need a carb with a bigger pilot jet?paulpauly7 wrote:or the pilot jet is to small in the stock carb and when the choke shuts off theres not enough fuel till you twist the throttle more and start engageing the main jet
I have another elite same setup but no boost port matching and it run perfect 50-55mph.
Life's a trip enjoy the ride.
94 elite SR, 86 spreedio, polini corsa, keli variator, 8.4, jet. speed 65 mph
spreedio video. https://www.youtube.com/watch?v=BZr46_-douQ
94 elite SR, 86 spreedio, polini corsa, keli variator, 8.4, jet. speed 65 mph
spreedio video. https://www.youtube.com/watch?v=BZr46_-douQ
Re: another, bogs at takeoff after warm up
What do you mean you port matched the head? Are you talking about port matching the cylinder to the block? I'm no fan of the stock carb, especially for a 72cc polini kit.
Re: another, bogs at takeoff after warm up
hi LoveMyHonda. yes I port matched the cylinder to the block. also the bottom base gaskit. as I was told this will improve the flow.LoveMyHonda wrote:What do you mean you port matched the head? Are you talking about port matching the cylinder to the block? I'm no fan of the stock carb, especially for a 72cc polini kit.
I may have to keep the stock carb in order to go 50+ miles on a tank. back roads no gas stations.
thanks.
Life's a trip enjoy the ride.
94 elite SR, 86 spreedio, polini corsa, keli variator, 8.4, jet. speed 65 mph
spreedio video. https://www.youtube.com/watch?v=BZr46_-douQ
94 elite SR, 86 spreedio, polini corsa, keli variator, 8.4, jet. speed 65 mph
spreedio video. https://www.youtube.com/watch?v=BZr46_-douQ
- Red Eft Performance
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Re: another, bogs at takeoff after warm up
If you want to keep stock carb you could try drilling out the pilot jet.
http://www.hondaspree.net/phpBB3/viewto ... =5&t=21448
http://www.hondaspree.net/phpBB3/viewto ... =5&t=21448
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Re: another, bogs at takeoff after warm up
Heh. You upsized the displacement but want the same fuel economy?ped wrote: hi LoveMyHonda. yes I port matched the cylinder to the block. also the bottom base gaskit. as I was told this will improve the flow.
I may have to keep the stock carb in order to go 50+ miles on a tank. back roads no gas stations.
thanks.
I can tell you right now, economy's going to be set by your main jet, not the pilot.
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Re: another, bogs at takeoff after warm up
Hi noiseguy. I think I was getting 65mpg stock. now in getting about 45-50mpg. but i'm all ways at WOT on the back roads.noiseguy wrote:Heh. You upsized the displacement but want the same fuel economy?ped wrote: hi LoveMyHonda. yes I port matched the cylinder to the block. also the bottom base gaskit. as I was told this will improve the flow.
I may have to keep the stock carb in order to go 50+ miles on a tank. back roads no gas stations.
thanks.
I can tell you right now, economy's going to be set by your main jet, not the pilot.
any lower mpg and I may not make it to next gas station
Life's a trip enjoy the ride.
94 elite SR, 86 spreedio, polini corsa, keli variator, 8.4, jet. speed 65 mph
spreedio video. https://www.youtube.com/watch?v=BZr46_-douQ
94 elite SR, 86 spreedio, polini corsa, keli variator, 8.4, jet. speed 65 mph
spreedio video. https://www.youtube.com/watch?v=BZr46_-douQ
Re: another, bogs at takeoff after warm up
What I mean is that enlarging the idle jet wouldn't impact your MPG much. Most of the fuel is going up the main jet.
But agree, if you're going for economy, you want a small-bore carb, which is what you have now.
Strap a 1 gallon fuel tank on the back rack and increase your range 1X.
You know, I wonder if one could add a custom tank to the inside underseat area. Add another vacuum-operated petcock and T the fuel and vacuum lines to it. Probably could put 1.5 gallons of fuel in that space... would move range up to over 100 miles.
But agree, if you're going for economy, you want a small-bore carb, which is what you have now.
Strap a 1 gallon fuel tank on the back rack and increase your range 1X.
You know, I wonder if one could add a custom tank to the inside underseat area. Add another vacuum-operated petcock and T the fuel and vacuum lines to it. Probably could put 1.5 gallons of fuel in that space... would move range up to over 100 miles.
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Re: another, bogs at takeoff after warm up
hi noiseguy. I was thinking of adding a gas tank like a dirt bike type or making the one is has larger.
the for everyone help.
the for everyone help.
Life's a trip enjoy the ride.
94 elite SR, 86 spreedio, polini corsa, keli variator, 8.4, jet. speed 65 mph
spreedio video. https://www.youtube.com/watch?v=BZr46_-douQ
94 elite SR, 86 spreedio, polini corsa, keli variator, 8.4, jet. speed 65 mph
spreedio video. https://www.youtube.com/watch?v=BZr46_-douQ
Re: another, bogs at takeoff after warm up
no, it was not the bystator. I replaced with a good one from my running ped. no luck.
I thing i'm going to change the whole carb. see if that helps. it has been cold and raining things going slow.
thanks for everyone advice.
I thing i'm going to change the whole carb. see if that helps. it has been cold and raining things going slow.
thanks for everyone advice.
Life's a trip enjoy the ride.
94 elite SR, 86 spreedio, polini corsa, keli variator, 8.4, jet. speed 65 mph
spreedio video. https://www.youtube.com/watch?v=BZr46_-douQ
94 elite SR, 86 spreedio, polini corsa, keli variator, 8.4, jet. speed 65 mph
spreedio video. https://www.youtube.com/watch?v=BZr46_-douQ
Re: another, bogs at takeoff after warm up
Bogging is a lean condition. Idle jet's not adjustable, and you've changed the main jet.
Any of you guys ever try changing out the venturi tube? This is the tube under the main jet. It controls the mix at 1/4 to 3/4 throttle.
Suspect that it's lean for what you're doing. Perhaps get a spare and drill it out? These parts are available from Honda but I've never understood the numbering structure.
Any of you guys ever try changing out the venturi tube? This is the tube under the main jet. It controls the mix at 1/4 to 3/4 throttle.
Suspect that it's lean for what you're doing. Perhaps get a spare and drill it out? These parts are available from Honda but I've never understood the numbering structure.
Admin, Hondaspree.net
Buy air filters and gaskets here (Ebay): http://stores.ebay.com/noiseguysstore
Buy air filters and gaskets here (Amazon): www.amazon.com/shops/spreepower
Buy a t-shirt here: https://teespring.com/stores/spree-powersport-products
Buy air filters and gaskets here (Ebay): http://stores.ebay.com/noiseguysstore
Buy air filters and gaskets here (Amazon): www.amazon.com/shops/spreepower
Buy a t-shirt here: https://teespring.com/stores/spree-powersport-products