boggong spree
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boggong spree
My spree bogs at 3/4 throttle. tried different carb(known good one) changed reeds, coil filter on filter off. could it be low compression?
Re: boggong spree
First I would check the fuel flow available to the carb (there has to be vacume applied to the other line of the petcock for fuel to flow). Second I would check the exhaust for plugging or decarbon it. A compression test takes a few minutes and will give a good idea of the condition of the internals so check that too.
- spree-rider
- Elite
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- Joined: Tue Nov 03, 2009 8:24 pm
- Location: Burien, WA
Re: boggong spree
pull sparkplug. it could possibly be lean.
86 spree
sb 50 intake and reeds
3.00x10 rear tire
waxed
99Polaris indy 700
harliquim paint
2" bar riser
lefty throttle
ice scratchers
SLP tri keel skis
ported
high compression head
chrome low windshield
mountain bar
Xtra-10
I ALWAYS KEEP ONE ROLLED
sb 50 intake and reeds
3.00x10 rear tire
waxed
99Polaris indy 700
harliquim paint
2" bar riser
lefty throttle
ice scratchers
SLP tri keel skis
ported
high compression head
chrome low windshield
mountain bar
Xtra-10
I ALWAYS KEEP ONE ROLLED
- Trafficjamz
- CBR1000RR
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- Location: Eastlake, MI
- Contact:
Re: boggong spree
veithouse wrote:My spree bogs at 3/4 throttle. tried different carb(known good one) changed reeds, coil filter on filter off. could it be low compression?
Make sure the air box is sealed up tight.
new best 1/8th mile time 9.647 seconds @67.155 mph 310lbs total weight
Re: boggong spree
it was the carbon build up in the exhaust port.
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- Veteran OG
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- Location: North of Seattle, WA
Re: boggong spree
Hey good work
While it's close in your memory, could you help out by drawing the approx port shape and obstruction you cleared out? I think it would be good info to all.
While it's close in your memory, could you help out by drawing the approx port shape and obstruction you cleared out? I think it would be good info to all.
Re: boggong spree
I can describe it, the port is oval around an inch wide, 3/8 inch high, the hole was reduced to the size of a pencil. had to take off the jug and clean it out. put it back together and it runs good around 30 mph.
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- Veteran OG
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- Joined: Tue May 22, 2007 8:10 pm
- Location: North of Seattle, WA
Re: boggong spree
Thanks - I've had some to take pics of, but never that obstructed.
Good info for all
Good info for all
- killerpancake
- Spree
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- Joined: Thu Dec 30, 2010 11:33 pm
- Location: Grand Rapids, MI
Re: boggong spree
is there any cleaner to run through the engine to get rid of carbon build up? will sea foam do that?
If it don't fit, force it. If it breaks, it needed to be replaced anyway.
(Previous)
87 honda spree
85 honda spree
(Current)
88 yammy razz
(parts bike)
another 88 yammy razz
(Previous)
87 honda spree
85 honda spree
(Current)
88 yammy razz
(parts bike)
another 88 yammy razz
- spree-rider
- Elite
- Posts: 693
- Joined: Tue Nov 03, 2009 8:24 pm
- Location: Burien, WA
Re: boggong spree
yes ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
86 spree
sb 50 intake and reeds
3.00x10 rear tire
waxed
99Polaris indy 700
harliquim paint
2" bar riser
lefty throttle
ice scratchers
SLP tri keel skis
ported
high compression head
chrome low windshield
mountain bar
Xtra-10
I ALWAYS KEEP ONE ROLLED
sb 50 intake and reeds
3.00x10 rear tire
waxed
99Polaris indy 700
harliquim paint
2" bar riser
lefty throttle
ice scratchers
SLP tri keel skis
ported
high compression head
chrome low windshield
mountain bar
Xtra-10
I ALWAYS KEEP ONE ROLLED
- killerpancake
- Spree
- Posts: 240
- Joined: Thu Dec 30, 2010 11:33 pm
- Location: Grand Rapids, MI
Re: boggong spree
thanks
If it don't fit, force it. If it breaks, it needed to be replaced anyway.
(Previous)
87 honda spree
85 honda spree
(Current)
88 yammy razz
(parts bike)
another 88 yammy razz
(Previous)
87 honda spree
85 honda spree
(Current)
88 yammy razz
(parts bike)
another 88 yammy razz
Re: boggong spree
Cheap oil it the villain in this situation. Run good oil and this won't happen.
The marine 2 stroke industry for years has had a product that is called "Engine Tuner". Warm engine up, spray the stuff in running the engine above idle (major smoking will ensue) and then slowly back off on the throttle until engine dies. Let engine set for 20 minutes to and hour and then fire it up and run it at WOT. It removes carbon and other nasties from your engine.
I bought an antique engine for my collection once for $20 that would barely run due to the crap oil the owner used in it. After a cursory inspection thru the intake ports, it had stuck rings, compression was low and it was full of cardon. So as a test I used engine tuner on it once a week for 6 weeks. At the end, compression was back up to the minimum specified and the thing ran rather well. When I tore it down for the restore that winter there was only one ring partial stuck (I was able to free it up and reuse it) and almost all the other carbon and crap was gone. The stuff works.
The marine 2 stroke industry for years has had a product that is called "Engine Tuner". Warm engine up, spray the stuff in running the engine above idle (major smoking will ensue) and then slowly back off on the throttle until engine dies. Let engine set for 20 minutes to and hour and then fire it up and run it at WOT. It removes carbon and other nasties from your engine.
I bought an antique engine for my collection once for $20 that would barely run due to the crap oil the owner used in it. After a cursory inspection thru the intake ports, it had stuck rings, compression was low and it was full of cardon. So as a test I used engine tuner on it once a week for 6 weeks. At the end, compression was back up to the minimum specified and the thing ran rather well. When I tore it down for the restore that winter there was only one ring partial stuck (I was able to free it up and reuse it) and almost all the other carbon and crap was gone. The stuff works.
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'83 Aero 80 X 3
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'85 Aero 80
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'85 Spree
'83 Aero 80 X 3
'84 Aero 80 X 3
'85 Aero 80
'84 Aero 125 X 2
'84 Aero 125
'84 Aero 125 X 2
'85 Aero 50
'85 Spree