rascal Posted July 20, 2010 Report Share Posted July 20, 2010 hey guys HELP... vitos 421 full drag port ... 4mill vitos stock rod crank, 34mm kehin pj carbs , 172 mains .needles 3rd from bottom.pilots 32, elevation 1100ft... fmf fattys ..kn pods ,timing +4 ...hemi head 2 with 22cc domes . pro flow billet intakes with v force 3 reeds.. i installed a billet high flow impellar too! plenty of oil ....32 to 1 mix... and high octane fuel....mixed it 50/50 115 and 93 oct.. dam thing keeps heating up and bubbling into the reserve tank when not MOVING through the wind!! runs great other wise but a little rich in the mid..WHAT WOULD CAUSE THIS..THE BIGGER PISTONS...? .the engine only has 2 hrs total on it.. cant barelly be ridden in the woods! any help or comments would help .... thanks Quote Link to comment Share on other sites More sharing options...
methyman Posted July 20, 2010 Report Share Posted July 20, 2010 First thing is to put a temperature gauge on the return so you exactly how hot it is getting. It could be a o-ring in the cool head. Did you torque the head down in the sequence in three steps? It could be a couple of things. Quote Link to comment Share on other sites More sharing options...
TeamRealtreeHD Posted July 20, 2010 Report Share Posted July 20, 2010 32 pilots is a problem. Quote Link to comment Share on other sites More sharing options...
lykins89shee Posted July 20, 2010 Report Share Posted July 20, 2010 32 pilots is a problem. x2 Quote Link to comment Share on other sites More sharing options...
sleeper06 Posted July 21, 2010 Report Share Posted July 21, 2010 air leak? Quote Link to comment Share on other sites More sharing options...
MacRacer1 Posted July 22, 2010 Report Share Posted July 22, 2010 wrong jetting Quote Link to comment Share on other sites More sharing options...
SonOfSand Posted July 23, 2010 Report Share Posted July 23, 2010 I run a 48 pilot @ 5000 feet. Quote Link to comment Share on other sites More sharing options...
PassionRE Posted July 24, 2010 Report Share Posted July 24, 2010 I run a 48 pilot @ 5000 feet. Check your billet impeller...Ive seen them eat out the covers before and destroy flow capability...Jim Quote Link to comment Share on other sites More sharing options...
wesw Posted July 25, 2010 Report Share Posted July 25, 2010 I run a 48 pilot @ 5000 feet. first off your running totally different carbs sec each needle changes variable alot 3rd ones persons jetting is going to be the exact to anothers sure they might be close but always different. while i do argee 32 is beyond lean there is alot of other variable to be looked into. Quote Link to comment Share on other sites More sharing options...
rascal Posted July 25, 2010 Author Report Share Posted July 25, 2010 32 pilots is a problem. my pilots are 57 s ..i wrote it wrong..it idless great..all day long.. its rich too .. mid to top..plug chop was great. brownish.. Quote Link to comment Share on other sites More sharing options...
rascal Posted July 25, 2010 Author Report Share Posted July 25, 2010 I run a 48 pilot @ 5000 feet. i wrote it wrong ..they are 57 pilots at 1100 ft.. was thinkn of my stockers! Quote Link to comment Share on other sites More sharing options...
rascal Posted July 25, 2010 Author Report Share Posted July 25, 2010 First thing is to put a temperature gauge on the return so you exactly how hot it is getting. It could be a o-ring in the cool head. Did you torque the head down in the sequence in three steps? It could be a couple of things. yes ..i torqed it the way it said.. no leaks either.. plugs look great. ... no collant escaping into the cylinders.. Quote Link to comment Share on other sites More sharing options...
rascal Posted July 25, 2010 Author Report Share Posted July 25, 2010 wrong jetting na man if anything is perfect on idle..tiny bit fat in the mid...top looks great but a bit rich.. wont pull real hard on a load in 5th and 6th gear..like it a bit rich thow for the higher rpm range! Quote Link to comment Share on other sites More sharing options...
InSein54 Posted July 28, 2010 Report Share Posted July 28, 2010 x2 on Impeller - i started running hot, nothing else seemed out of the ordinary, ended up being impeller issues. Quote Link to comment Share on other sites More sharing options...
camatv Posted July 29, 2010 Report Share Posted July 29, 2010 make sure the impeller is working ( pop cap, rev bike, look for coolant wooshing around), replace your cap, 13-16psi is available at o,reilley's ( its an import cap) do you have actual coolant in there like 50/50 mix right out of the bottle? or straight water out the tap ( big no no) THEN make sure your radiator is CLEAN that is NO mud or dirt or crap in the rad finn's is your grill stock or one of those aftermarket ones that you cannot even see the rad? wash it out with water and LET it dry before you ride it in the woods. if the finns are bent bad you might try and straighten them. you can't really just put put a bike like this in 1st gear or so. there is no fan and they can get pretty hot due to the lack of flow. the 16psi cap might solve the issue also. IF everything else is ok. Quote Link to comment Share on other sites More sharing options...
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