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polaris sl650 now on premix, what about carbs?
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John
Jul 25, 2001, 11:53:29 PM7/25/01
to
I'm going to convert over to premix after I replace the engine on my 93
sl650 (oil pump failure). The darn carbs are all adjusted different on
the high screw ( manual says 3/8, 5/8, and 7/8 ) on the carbs. Has
anyone gone premix and how did you end up with the carb settings. Oh
yeah, the high speed screws are all set up differently but the low
speed screws should all be the same (1/4 out)
sl650 (oil pump failure). The darn carbs are all adjusted different on
the high screw ( manual says 3/8, 5/8, and 7/8 ) on the carbs. Has
anyone gone premix and how did you end up with the carb settings. Oh
yeah, the high speed screws are all set up differently but the low
speed screws should all be the same (1/4 out)
MR-HPT
Jul 26, 2001, 2:41:39 AM7/26/01
to
John. Never use any tuning specifications from another machine, specially
data posted on this NG. Each machine differs greatly from the other. To
many veritables effect precise tuning. Best way to start is by jetting your
carburetors at near 4 stroking point, and only then proceed with fine
adjustments. Call me if you wish I will lead you throe it.
Regards
George Ski Chop Shop Eliminator.
HPT Sport USA
http://www.hpt-sport.com
Tel 270-898-2617
data posted on this NG. Each machine differs greatly from the other. To
many veritables effect precise tuning. Best way to start is by jetting your
carburetors at near 4 stroking point, and only then proceed with fine
adjustments. Call me if you wish I will lead you throe it.
Regards
George Ski Chop Shop Eliminator.
HPT Sport USA
http://www.hpt-sport.com
Tel 270-898-2617
Raggedraider
Jul 26, 2001, 9:38:59 AM7/26/01
to
whats " four stroking "?
thanx
MR-HPT
Jul 26, 2001, 12:36:54 PM7/26/01
to
When two stroke engine gets more fuel in to a cylinder then it can
handle, it will miss fire on avery other stroke. It will sound like a 4
stroke engine. That is one of the oldest methods to start tuning your
machine to protect top end from seizure. How ever if to much fuel
resides in cylinder for to long of a time, you may damage your top end
due to loss of lubricant, between cylinder, and piston by extra fuel,
not to mention possibility of glazing cylinder, piston, and rings dos
exist. Tuning at the edge for High Performance requires know how, and
lots of patience.
GJG
handle, it will miss fire on avery other stroke. It will sound like a 4
stroke engine. That is one of the oldest methods to start tuning your
machine to protect top end from seizure. How ever if to much fuel
resides in cylinder for to long of a time, you may damage your top end
due to loss of lubricant, between cylinder, and piston by extra fuel,
not to mention possibility of glazing cylinder, piston, and rings dos
exist. Tuning at the edge for High Performance requires know how, and
lots of patience.
GJG
Kelly Matchett
Jul 26, 2001, 9:57:20 PM7/26/01
to
Hey, bozo, according to the post, it's a stock machine minus the
injection. On stock machines, the settings aren't as critical as you
like everyone to believe, or if they were then all those pages in the
manuals stating the carb settings would be a hell of a waste, right
along with the factories having to set each one up on a one on one
basis. Of course, your reading skills wouldn't allow you to know that.
John, I'd help, but haven't done this myself and don't have any sure
fire settings. I did remove the injection on my 650 for a short time and
without adjusting anything, never saw a difference, but don't recommend
it this way. I put the injection back on due to the pain of premixing in
my riding style. It's all in reading piston wash, but judging by your
other post, that would take a bit or learning for ya. Hopefully someone
will come on here with some real help, instead of the useless crap
below, and above for that matter.
Kelly
injection. On stock machines, the settings aren't as critical as you
like everyone to believe, or if they were then all those pages in the
manuals stating the carb settings would be a hell of a waste, right
along with the factories having to set each one up on a one on one
basis. Of course, your reading skills wouldn't allow you to know that.
John, I'd help, but haven't done this myself and don't have any sure
fire settings. I did remove the injection on my 650 for a short time and
without adjusting anything, never saw a difference, but don't recommend
it this way. I put the injection back on due to the pain of premixing in
my riding style. It's all in reading piston wash, but judging by your
other post, that would take a bit or learning for ya. Hopefully someone
will come on here with some real help, instead of the useless crap
below, and above for that matter.
Kelly
MR-HPT
Jul 27, 2001, 2:41:54 AM7/27/01
to
Kelly. Tell your story to those people who ended up with thousands of dollars in
damage to their engines listening to would-be tuners. Sense when manufacturer
tune their engine for best performance under ALL conditions, and elevation.
Variation in bland of fuel alone can be a huge problem. Do you know that many
states have different blending requirements? For those who are interested in
keeping engine out of trouble I strongly recommend to take it to person who
understands tuning procedure, If you wish to do you own tuning make sure to
provide plenty fuel to a cylinders to get your engine
running at 4 stroke point ( over rich condition ) only then proceed with tuning
to best performance.
George Ski
damage to their engines listening to would-be tuners. Sense when manufacturer
tune their engine for best performance under ALL conditions, and elevation.
Variation in bland of fuel alone can be a huge problem. Do you know that many
states have different blending requirements? For those who are interested in
keeping engine out of trouble I strongly recommend to take it to person who
understands tuning procedure, If you wish to do you own tuning make sure to
provide plenty fuel to a cylinders to get your engine
running at 4 stroke point ( over rich condition ) only then proceed with tuning
to best performance.
George Ski
Kelly Matchett
Jul 29, 2001, 5:54:50 PM7/29/01
to
Those big words getting in the way again? Sorry, I can't include
pictures on here... Uh, we're talking about stock engines, of which
manufactures send out by the thousands all with the same settings. And
when that same stock engine only has a mod like an injection removed,
all those same engines will respond equally well to a small adjustment
to compensate, and in some cases those adjustments aren't even needed.
And when you run into that "bland" fuel a little sugar will help you
out. I recommend it.
Oh, just to spell it out... n o o n e w a s t a l k i n g a b o u t
m a x p e r f o r m a n c e h e r e , o n l y a d j u s t i n g
f o r m i n o r c h a n g e s. LEARN TO READ!!
Kelly
pictures on here... Uh, we're talking about stock engines, of which
manufactures send out by the thousands all with the same settings. And
when that same stock engine only has a mod like an injection removed,
all those same engines will respond equally well to a small adjustment
to compensate, and in some cases those adjustments aren't even needed.
And when you run into that "bland" fuel a little sugar will help you
out. I recommend it.
Oh, just to spell it out... n o o n e w a s t a l k i n g a b o u t
m a x p e r f o r m a n c e h e r e , o n l y a d j u s t i n g
f o r m i n o r c h a n g e s. LEARN TO READ!!
Kelly
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