Maintenance & Technical > KX500 Original

BASE GASKET BLOW OUT

<< < (3/9) > >>

monster malibu:
I checked out cometic.com and they list a topend gasket set for my 87 kx500. My bike has the stock bore 86mm, cometic lists a 88mm for my bike, will it work?

gowen:

--- Quote from: BDI on September 23, 2007, 05:16:10 PM ---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.

--- End quote ---

Correct. I have run Cometic for years and years without issue on every single bike I've owned.. I have also used Moose with success on my KX (Eric Gorr had a thick one designed for my KX or something like that).. Everything else had Cometic. I'd guess it was warped too.

KXcam22:
Regardless of the gasket brand, I like to glue my base gaskets with some type of form-a-gasket.  Once rebuilt, the 500 tends to stay together for quite a while so I don't mind the extra effort to scrape/clean off the glued gasket during the next rebuild.  However, I have had to do at least one rebuild because an unglued base gasket blew out (un noticed) and sucked dirt into the engine, ruining a out of town riding adventure.  My K5 one (OEM) is nicely cemented in place with the last of my Kawibond. Cam.

hughes:
I agree. I use yamabond 4.

BDI:
Maybe I'm crazy but anything that works better and makes my life easier, Im all about It. A gasket that doe's not need to be glued In place and never blows out and comes off cleen when your done with It. How could you not want that :? I rate scraping gaskets right there with spooning tires,cleaning air filters and smashing my finger with a hammer. All things I'm capable of but probably would never do again If I did not have to.

Navigation

[0] Message Index

[#] Next page

[*] Previous page