"the tuning bible"
#76
hi houston,
just wondering why offroad .21engines usually use a much hotter plug than onroad .21engines?
i've seen people using os p3 for their offroad engines but when it comes to onroad engines they'll use a much colder plug like nova#7. both using 25% nitro, air temp about 77F and humidity about 70%.
also, which is more damaging? over lean HSN or over lean LSN?
just wondering why offroad .21engines usually use a much hotter plug than onroad .21engines?
i've seen people using os p3 for their offroad engines but when it comes to onroad engines they'll use a much colder plug like nova#7. both using 25% nitro, air temp about 77F and humidity about 70%.
also, which is more damaging? over lean HSN or over lean LSN?
Last edited by keavze; 07-20-2009 at 06:50 AM.
#77
hi houston,
just wondering why offroad .21engines usually use a much hotter plug than onroad .21engines?
i've seen people using os p3 for their offroad engines but when it comes to onroad engines they'll use a much colder plug like nova#7. both using 25% nitro, air temp about 77F and humidity about 70%.
also, which is more damaging? over lean HSN or over lean LSN?
just wondering why offroad .21engines usually use a much hotter plug than onroad .21engines?
i've seen people using os p3 for their offroad engines but when it comes to onroad engines they'll use a much colder plug like nova#7. both using 25% nitro, air temp about 77F and humidity about 70%.
also, which is more damaging? over lean HSN or over lean LSN?
over lean hsn because thats where your engine is revving and needs more oil
not saying that a lean bog off the bottom is a good thing but its not just caused from a lean lsn . usually high temps or wrong pipe
#78
thankyou for yr reply houston.
however, what i'm trying to ask about the engine lean issue is that; what damages will happen to the engine if:
you're running it too lean on the
1) LSN, 2) HSN
by the way, how will the tune be affected if there's a change of plug? example from #6 to #5 or from #5 to #6?
however, what i'm trying to ask about the engine lean issue is that; what damages will happen to the engine if:
you're running it too lean on the
1) LSN, 2) HSN
by the way, how will the tune be affected if there's a change of plug? example from #6 to #5 or from #5 to #6?
Last edited by keavze; 07-21-2009 at 07:03 AM.
#79
Tech Initiate
what are perfect running temps for a OS V-spec?
#80
There's no such thing as the perfect temp for any engine? Throw your temp gun into the bottom of your pit box and only use it for running in!... Learn to tune by power, sound and smoke. It's a much more accurate way of getting the best perfomance and longevity out of your engines.
google RON PARIS and you'll find the best tips for tuning nitro engines!
google RON PARIS and you'll find the best tips for tuning nitro engines!
#81
thankyou for yr reply houston.
however, what i'm trying to ask about the engine lean issue is that; what damages will happen to the engine if:
you're running it too lean on the
1) LSN, 2) HSN
by the way, how will the tune be affected if there's a change of plug? example from #6 to #5 or from #5 to #6?
however, what i'm trying to ask about the engine lean issue is that; what damages will happen to the engine if:
you're running it too lean on the
1) LSN, 2) HSN
by the way, how will the tune be affected if there's a change of plug? example from #6 to #5 or from #5 to #6?
high speed usually equates to an out of balance feel when running and and much less engine life due to low lubrication flow on throttle .
#82
There's no such thing as the perfect temp for any engine? Throw your temp gun into the bottom of your pit box and only use it for running in!... Learn to tune by power, sound and smoke. It's a much more accurate way of getting the best perfomance and longevity out of your engines.
google RON PARIS and you'll find the best tips for tuning nitro engines!
google RON PARIS and you'll find the best tips for tuning nitro engines!
#83
low speed usually equates to poor low end performance with possible temp spikes and a very high idling that pushes you through the corner .
high speed usually equates to an out of balance feel when running and and much less engine life due to low lubrication flow on throttle .
high speed usually equates to an out of balance feel when running and and much less engine life due to low lubrication flow on throttle .
#84
#85
#86
newbie
hi guys
ive just got my frist buggy and me knowing nothing about tuning i'd thought ill ask what will happen if the car is
lean on bottom and what will the car do???
rich on bottom " "
lean on top " "
rich on top " "
or what should i look for.
as i really dont wanna stuff my motor
cheers
ive just got my frist buggy and me knowing nothing about tuning i'd thought ill ask what will happen if the car is
lean on bottom and what will the car do???
rich on bottom " "
lean on top " "
rich on top " "
or what should i look for.
as i really dont wanna stuff my motor
cheers
#87
Tech Apprentice
iTrader: (8)
i bought a losi 8ight 2.0 rtr buggy when they first came out and i have been racing it for a month and half. i still have the stock losi 350 engine in it and has great power and seems to run great.
my problem is when it flames out or runs out of fuel, it is nealy impossible to get it to restart until it sits for a while. it temps at about 250 when its 90 outside. i'm wondering if the metal carb could be causing vapor lock because it does not seem to be insulated from the block. thanks for the help.
my problem is when it flames out or runs out of fuel, it is nealy impossible to get it to restart until it sits for a while. it temps at about 250 when its 90 outside. i'm wondering if the metal carb could be causing vapor lock because it does not seem to be insulated from the block. thanks for the help.
#88
Tech Rookie
speed freak your too lean on bottom when you flame out hot and its hard to start there is not enough fuel richen your l/s an hour or two and you will find it better
#89
Tech Rookie
hi guys
ive just got my frist buggy and me knowing nothing about tuning i'd thought ill ask what will happen if the car is
lean on bottom and what will the car do???
rich on bottom " "
lean on top " "
rich on top " "
or what should i look for.
as i really dont wanna stuff my motor
cheers
ive just got my frist buggy and me knowing nothing about tuning i'd thought ill ask what will happen if the car is
lean on bottom and what will the car do???
rich on bottom " "
lean on top " "
rich on top " "
or what should i look for.
as i really dont wanna stuff my motor
cheers
#90
after a high speed pass, my engine will idle slightly higher; however if i blip the throttle, it'll return to normal idle.
if i don't blip my throttle, it'll return to normal idle after about 5s.
my guess is the LSN still abit lean?
if i don't blip my throttle, it'll return to normal idle after about 5s.
my guess is the LSN still abit lean?