timing advance causing to overheat?

[BlackBurg10]

I got this banshee just recently I have been going through everything on it that the previous owner did, for some reason the timing plate was set at like -5 so I set the timing to +4 and at the same time I installed a new impeller. Today was the first test ride only around my neighborhood for about 10 minutes and when I got back I noticed it was running alot hotter then it had before. What would change going from -5 to +4 would the jetting need to be redone possibly? Before the quad was backfiring and sputtering, and now with the plate set at +4 it seems to run much better now just much hotter.

[Sandfrk33]

Timing adds heat for sure. I noticed it on mine

[crustydemon]

An increase in temperature from a 9 degree change in timing would be normal but since you replaced the impeller just make sure your full of coolant and dont have a air lock. I would check your jetting for sure!

[BlackBurg10]

Ok thanks for the replies, how hot do they usually run? It was to the point where I couldn't keep my hand on the radiator it was so hot..

[Jereme6655]

okay what mods does your bike have? im starting to wonder if your doing other internal damnage by mistake because of the previous owners idiotness.....llike WHY would he have the timing retarted to -5? Either he had no idea what the hell he was doing or he had a problem (like detonation or needing race fuel) that he couldn't solve. Also even though a banshee is a liquid cooled quad...it is not fan cooled. So you need to keep air flowing through the radiator in order to keep the motor cool. Even just letting it sit there and idle for a long time can actually cause a normally perfect running banshee to over-heat.

[Larry's Shee]

Well you usually can't put your hand on a car radiator. I would do a comp test to see what you might need for fuel. What other mods and what's your jetting?

[bansheesandrider]

According to my TrailTech temp gauge, my Banshee runs at 185-200 degrees when I am moving across the dunes. You can't hold your hand on the radiator at that temp and I would consider thst to be running normal. When I am racing the hil or doing tree shots or hillclimbs it can go up to 215 or more but that is when I do something to cool it off. Also, the hotter you run it, the shorter your ring life will be.

[06specialedition]

Get a temp gauge. Normally on a hot summer day my bike runs at about 190-200. I always shut it down at about 210.

 

I just bought an over sized aluminum radiator so we'll see if there's a change this summer. Also check your jetting... and compression.

[ggalleone]

Not to be a dick, and correct me if im wrong...but if your judging your engine temp by whether or not you can touch the radiator, then mabey your bike is running fine?! Get a temp guage to be sure.

[C&B]

D all the above Andif its a modquad impellar.... They have a tendancy to rub on the housing hence they FAIL!!! So make sure youre all good there..

[fastquad02blaster]

I'd say that something could be jacked up. I don't have any clue why you would set your timing at -5*. I'm sure that setting it at plus 4* would help it run better. From 0 to plus 4 helps them run better. Check compression, as said, and go from there. If you got a modquad impellar, you might have issues.

[bansheesandrider]

I think this is being overanalyzed.Of course your radiator is going to be hotter after you bump the timing. Why you ask- because you bumped the timing to get more horsepower and to make more horsepower you have to make more heat. So if you have more heat, your radiator is going to be hotter.

[BlackBurg10]

Well I rode It quite a bit the way that I bought it which now I'm realizing was probably not good. I knew the whole time that it was not running quite right and I planned to just rebuild the whole engine anyways, and get new cases since the ones on it are cracked then i can also check the gears. But thanks to all you guys here on Bansheehq I found out about all the timing stuff and other info I think I have it somewhat sorted out now. When I first got it the thing was always backfiring, and just dead at part throttle it would only run well wide open. But now I adjusted the timing plate and also replaced a bent carb needle it seems to run good all around, i've slowly just been finding out more and sorting it all out the previous owner was obviously clueless because its all poorly done. As well I took it to Gorman with the timing the way it was before and somehow it blew a head gasket.(found out because it was shooting coolant out overflow.) Thats all that appeared to be wrong, so i put a new head gasket on and it seems perfectly fine now fires up first kick no more coolant overflowing, and now with the timing it appears to run even better no more backfiring. I really just need to rebuild the motor on it I've replaced many parts on it so far its come a long way. From replacing axle to replacing destroyed bolts and clutches and next is replacing the bent long travel thats on it haha?? Anyways the mod's are Toomey t5s, Keihin 28mm carbs( I am unsure of jetting I just recently got it done at a place called Jettuning before I even knew about the timing.) It also has reed spacers, vforce reeds, and k&n's with pod filters. I just installed the Chariot hi-flow impellar, with his water pump cover. It was rubbing when I first installed it and I didnt want to start it like that so I found out that if you pound the bearing in further just barely it doesn't rubb. So now I rode it ( I didnt let it idle for long.) Only about 2 minutes then rode it around for about 15 minutes and I could feel it much warmer around my legs then usual I came back and touched the radiator and it was super hot and it was no where near that way it was before I was just tryin to get an idea of what major things go into play when adjusting the timing plate if anything at all. I will try the compression test at some point if it continues to run good, and I will be purchasing the temp gauge thanks for the info!

[mofoka]

If you are running lean that could be an issue to start.

 

I like the faster warm up time with the advance.

 

I use engine ice instead of regular coolant, it's supposed to keep it cooler. But i haven't ever had issues with overheating.... I'll count myself lucky

[bigblockbanshee]

I'm guessing not only did the guy not have a clue but he was reading the timing plate wrong and could've possibly meant to put it at +5 instead of -5. At any rate advancing the timing and raising the compression, if the head has been milled, would effectively cause a very noticeable increase in heat. And also as was stated above if you're jetted too lean it will without a doubt overheat and likely to the point that it butts ring ends together and busts a ring groove causing the dome to separate from the skirt of the piston thus greatly thinning your wallet/bank account. Sounds like a great time to do a full rebuild before it pukes so you can make 100% certain of what's in the motor and the specs on it.