Power User
Roostin Away
R coolant overflowing but why???
Ok here's the deal.......
The radiator is completly filled, then it spills into the overflow. It dosn't come out of the overflow idleing, but as soon as you give it gas it's spewing out.... Obviously this drians the radiator. I only make a run or two up my driveway, maybe give it a shot of throttle in 4th, then it needs to be re-filled......
So my question is, what gives???? Why is it overflowing crazy like this???? I'm lost on this one......
"I have but one lamp by which my feet are guided, and that is the lamp of experience." -Patrick Henry
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Power User
Teaching quads a lesson
its running real hot or the radiator cap is bad. I would replace the radiator cap first.
Power User
The day begins with 3WW
Could be a blown head gasket. With a blown gasket, your cylinder preasurizes the radiator, pushing fluid out the resevoir.
Is it smoking more then usual?
Last edited by ATC-Eric; 09-15-2006 at 06:53 PM.
My feedback: http://www.3wheelerworld.com/showthr...k-for-ATC-Eric
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Power User
Roostin Away
Hmmmmmm I was thinking the head gasket too.......
I'm getting a new one hopefully tomorrow....... The radiator cap is fine, when you pull it off there's pressure.....
ATC-Eric your proubly right........
"I have but one lamp by which my feet are guided, and that is the lamp of experience." -Patrick Henry
NEW ENGLAND ATC owners please join!:http://www.3wheelerworld.com/group.php?groupid=27
Power User
The day begins with 3WW
Originally Posted by 250r'en +TCB
Glad to help out man.I had the same problem.
My feedback: http://www.3wheelerworld.com/showthr...k-for-ATC-Eric
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At The Back Of The Pack
Arm chair racerFirst time rider
yea i agree with you guys i also think its the head gasket
savin one atc at a time
Power User
The day begins with 3WW
Did you do the retorquing procedure after the first time the motor cooled down?
Just Too Addicted
Arm chair racerJust too addicted
I am having the same problem with my Tri-z. I just had the head machined and a new bore. More than likely it's the head gasket. You can swap rad caps first, but if it's coming out when you give it throttle, then it's the head gasket. And yes, like BigGreen says, torque the head properly also.
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Catch me if you can
I'd be willing to bet its a head gasket. And someone else more informed then me correct me if I'm wrong, but dont the big bore cylinders require a different head gasket from stock?
Trikein' Away
Arm chair racer4 Wheels? Huh?
I have gone through that with my Z and ended up needing a new head gasket.
1985 YAMAHA TRI-Z 250 sold
2006 YFZ 450
At The Back Of The Pack
Arm chair racerFirst time rider
yes it does use a different head gasket. These 72mm resleeves of the stock cylinders are well known for this sort of issue, as there is not much room between the water jacket and the combustion chamber. I ran one of these and had the same problems, so I ditched it and went back to a well ported 66mm cylinder.
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