issue: incosistant temps on engine.. run a tank of fuel get it to 205f.. pretty good power, but boggy, so get it to 225f which makes great power.. run tank all is well.. shut it off..
next tank.. start it up.. hits 250+ so fast its crazy, cannot get temps down.. kill engine..
next tank.. cannot get it to 200f..
next tank back to the nice 225f..
what i did tonight after these issues.. it almost sounds like a air leak? can it be? HSN is 4 turns out, LSN is 6 turns out. i pulled the needles, what fun that was.. the o rings had no lube on them to turn easily, so hint #1 the suck air till resealed.. the LSN actually shaved alittle rubber off the outer o ring and debre was in the housing.. so i greased them up..
First tank at idle was good. When it shut off the piston was competely stuck in the sleeve, but a wrench took care of that.
When driving ( I am breaking in as stated in the manual) the temp does not get up when giving less than 1/2 throttle. If I give more, it reaches 110 degrees C and it pulls very well! When it's on such temps, the temperature stays like that and doesn't drop below 100. (215F)
It sputters because of the rich setting, but the higher the temp, the better it performs. Whem nailing the trigger, it boasts off, then sputters, and then pulls to speed. I have measured 127 degrees C (265F. But because I was at point 3 in the manual, I let it cool down. I am now ready to tune it to 80% performance, but am affraid the temperature will go up more. My HSN is now 1 1/2 counter clockwise from factory setting. I can now start it without pre-heating. Just loosen the glow plug a bit. But when fully broken in, the thing rips..
Toberloth
-------------------- If you try to fail and you succeed, what did you just do? Posts: 61 | From: Oosterhout / Rijen ( NB ), The Netherlands | Registered: Apr 2004
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i also broke mine in as per manual.. but i also used a tip i read on the forum about piston sleve pinch, basically stated somewhere is a tip of after warm, remove the glow plug and turn the engine over by hand, when you can no longer feel pinch, rember the glow plug is removed, its ready to race.. so once i got to this point, after tank 3, i started tuning it in.. but took it easy for 2 tanks of tuning..no rapid starts or anything horrific.. but full rpm band..
but the temp issue is why i asked this carb o ring issue.. i know the "junk picco 26" does that to me very often any time i touch a needle, except after i lubed up the o rings.. then just the start of every day now, it is so touchy 1/16th a turn will be the differance between to rich and too lean..
my ws7II keeps tune so well and the carb looks identical, i just have to wonder if the o ring is the issue im having..
posted
I just broke in this beast also. I am having issues with the engine stalling after the first minute of running or so, i still think I'm running a little rich but temp is around 215 F. Any advice?
Posts: 11 | From: UNITED STATES | Registered: May 2004
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what someone found on savage-central is with the hb pipe he had a incostant temp issue.. it went aay the second he put the rb 063 pipe on it.. ive gotten mine to stay around 245f which consitant to me is est.. pleanty of smoke and oil from the pipe..
i greased up the o rings on the needles and issue went away..
posted
Well I have greased the o rings as well (although I couldn't get the LSN out, so I just put grease on the threads) and it seemed to work. Temps were about constant but still I have measured 150 deg centigrade today. Even though it is so rich it almost stalls when accelerating and fourstrokes like hell when 1/2 throttle.
Surely this can't be the badly greased LSN only?
I am gonna try the 063 pipe which is said to lower temps, but it shouldn't be neccesary.
Let's see what the dealer says tomorrow...
-------------------- If you try to fail and you succeed, what did you just do? Posts: 61 | From: Oosterhout / Rijen ( NB ), The Netherlands | Registered: Apr 2004
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Sounds to me like you guys are too lean on the LSN. If the 28 is like other RB's the temps will not go down until your LSN is rich enough.With a proper tune, the engine will load up and die quickly if left to idle and you must constantly keep the engine cleared out. Try this, open the LSN a full half turn or more, and then lean the HSN until the engine revs up good and see if the temps don't go way down. You will probably need to raise the idle a bit too to keep it from dying too easily at idle.
Posts: 994 | From: santa rosa CA | Registered: Apr 2004
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That's what I was going to try the next time I run it. But I have to wait for my conrod to arrive. Almost burnt 5 liters through it...
Thanks for your input
-------------------- If you try to fail and you succeed, what did you just do? Posts: 61 | From: Oosterhout / Rijen ( NB ), The Netherlands | Registered: Apr 2004
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posted
actually it was LSN was too rich and well too much oil causes over heating too.. the biggest dramatic effect was lubing the o rings so when i tampered with a needle the o ring would not reseal till after a few cycles.. the grease allowes them to stay sealed and move freely..
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