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iceee187

Leaky radiator fluid.

5 posts in this topic

2006 yz 450 high comp piston, full exhaust , non oem top end gaskets.

Ofter a rebuild I have fluid coming out of the front cyclinder head flange. leaking a drop a second. very notciable. Everything is in spec of tightness. could my head gasket be blown some how. Its a tuck offraod gasket. ask and I can give u more details.

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Check for a coolant leak at the joint between the head and the tube where radiator hose connects to the top end.

How did you do your cylinder head torque?

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there is no leakage from the head gasket anwhere, it seems to still be coming from the front flange. Just put a OEM oring in the front top head cylinder head rad intake flange.

I did a 22 ft lb then a 180 degree turn on the bolts???

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I did a 22 ft lb then a 180 degree turn on the bolts???

That would be overtightened. You're supposed to pretorque to 22 ft/lb, then loosen the bolt and retorque to 14 ft/lb, THEN turn each bolt another 180 in 90 degree steps.

Read:

http://www.thumpertalk.com/forum/showthread.php?t=972816

As far as the leak, if it persists from the outlet tube, inspect the socket the tube sits in as well as the tube and the O-ring for damage.

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