Maintenance & Technical > KX500 Original
BASE GASKET BLOW OUT
monster malibu:
Are the oem gaskets metal/paper combo, or are they just made of paper? Anybody using Moose gaskets, or Vesrah gaskets with any luck?
FactoryPhil:
The OEM gaskets are paper only. In my experience they are less flimsy or flexible than most aftermarket ones. Honestly, I have used Cometic gaskets with great success in the past. You might want to check your cylinder and crankcase mating surfaces very carefully next time you replace the gasket. It is possible there could be some old gasket left or maybe a gouge from scraping that caused the failure.
kaw rider:
oem are paper base gasket.
BDI:
Cometic makes base gaskets that are aluminum with foam rubber on each side. These gaskets will not blow out sideways because of the metal in them. The foam rubber makes them seal much like O-rings would, plus when you have to take your engine apart they come right off with zero clean up, no gasket scraping means no scratches and no future sealing problems. If your base gasket leaks around the transfer area it is very likely that the base of you cylinder is not flat. This is usually caused by over torquing of the base nuts. You should check the bottom of the cylinder for flatness and have it machined accordingly then torque the base nuts using a crows foot to 25 foot pounds. You should first torqe them to ten then twenty then twenty five In a criss cross patern. Cometic makes the best gaskets I have ever used and this Is not my first rodeo. If you order your gaskets from a after market supplier you will get what they have on the shelve. If you order from www.cometic.com you will get what you specify. They even have stainless steal gaskets the are rubber coated but they are expensive. If a gasket blowes It Is generally not the gaskets fault. You must figure out why It blew and fix the problem.
FactoryPhil:
--- Quote from: BDI on September 23, 2007, 05:16:10 PM ---If a gasket blowes It Is generally not the gaskets fault. You must figure out why It blew and fix the problem.
--- End quote ---
Bingo!
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