lean low end causing overheating..??
#1
Tech Master
Thread Starter
lean low end causing overheating..??
on a race engine, COULD running the low speed adjustment even just a pinch too lean cause the engine to run hot..??
#3
but a lean bottom is better then a lean top
#4
Tech Master
Thread Starter
this overheating problem seems to happen after racing for a few minutes...
#5
Tech Elite
iTrader: (86)
have you tried to richen it up when it starts running hot? if so it could be a couple of things clutch dragging air leak you could start out richen the top about 1 full turn and drive it till it gets up to temp if it still over heats when you richen the top i would say check for air leaks.
#6
Tech Master
iTrader: (34)
lsn has the biggest effect on engine temps. pinch test never fails, clear out the motor on the box, after the motor drops to idle pinch the fuel line right before the carb with some needle nose and count to 4. if its still running when you hit 4 you are on the rich side, if it is dies before you hit 4 your on the lean side. if it dies right when you hit 4 you are dead on race tune, adjust the idle stop screw so the engine drops to idle about 10 seconds after clearing it out.
#10
an overly rich low end can cause overheating to. say what??? think about it. you have a rich low end and dont know it. so while tuning you exibit a bog at mid rpm, so you lean the top end to get rid of it. An overly rich bottom end can cause a tuner to make and overly lean top end. which would cause overheating.
#11
idk i just listen to mine,, and she tells me secrets.....
#12
re
on another very overlooked note a bad bearing in your drivetrain wheels diffs etc can also cause an overheat in your engine,also when you "clear"out your engine on the box it should not take 10 seconds to return to an idle
#13
Tech Master
Thread Starter
thanks for the info, guys....will come in handy this coming w/e(motorama)...