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Honda MX & Off-Road Dirt Bikes
1987 CR80 losing Gear Oil
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[QUOTE="bryank30, post: 1330376, member: 101282"] Over the holidays I purchased a '87 CR80 that needed a new crank and bearings so I went through the motor, used the all-balls crank bearings and seals and freshened up the top end. Well upon firing it up, it smoked alot and frequently fouled plugs but ran great inbetween. I checked the gear oil and it was low. So I know that oil is leaking past the right crank seal or the crankcase gasket- I sure hope its just the seal. How often does a crankcase gasket leak? I made extra sure to get both mating surfaces clean, but I did notice a few hairline nicks in the mating surfaces. I was told that the crankcase gasket will expand when oil touches it. I just got new crank seals and a complete gasket kit. Any tips would be appreciated. I wonder if I should use a spray on sealant on the gasket this time around to assist its sealing capabilities. [/QUOTE]
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Dirt Bike Discussions By Brand
Honda MX & Off-Road Dirt Bikes
1987 CR80 losing Gear Oil
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