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allanworks 06-05-2011 04:35 PM

help oil leaking around exhaust pipe/engine
i just noticed that theres oil coming out at the bottem of the header where it bolts to the engine. its not much about 2 table spoons worth in an half hours worh of riding. she doesnt im confused some body told me to pull my header off and replace the exhaust gasket and a o ring thats sapposed to be in there.but my kawasaki service manual doesnt say anthing about exhaust o rings or i cant find it.its a 1978 kawasaki kz750 twin and cant ride till i fix it.

Easy Rider 2 06-05-2011 06:01 PM


Originally Posted by allanworks (Post 261120)
its not much about 2 table spoons worth in an half hours worh of riding.

You'd better hope it is a LOT less than that......because all the new exhaust pipe gasket will do for you is route the oil out in a different place: Down your pipes and out the back. That's where the oil goes when you start "burning" oil due to bad rings or valve guide seals.

When that crush gasket goes bad or becomes loose, it is not unusual to have a TINY bit of oil/gas/soot mixture seep out there. By that, I mean a few drops, not 2 Tbsp. How did you estimate the amount ??

If the pipes have been off before, there might not even be a gasket there anymore. There isn't a gasket AND an o-ring; the gasket IS a metal O-ring.

This is a tricky decision to have to most times the bolts holding the header on are rusted and frozen. Messing with them often causes at least one to break off. If the amount of leakage isn't enough to cause the crankcase level to drop noticeably, then it is probably OK to ride just as is.

allanworks 06-05-2011 07:34 PM

she is a pretty old bike probally just throw a gasket on her and run her tell she dies .would like to restore her but might be to much work then shes worth. i was gestamating probably less then i think. i like the bike she hugs the rode like a bulldog with a t bone.but have a bigger problem now the starter wont engage and the kick start doesnt work think it was a fuse to dark out to you think i could restore her for under $1000 doing part of the work myself must include rebuilding engine trans carbs recover seat and paint job

The_AirHawk 06-05-2011 07:39 PM

"197X Japanese Motorcycle" and "$1000 Resto" are mutually-exclusive phrases, and not to be used in the same paragraph one with another; except in the description of improper grammar.

allanworks 06-05-2011 08:54 PM

what do you think it would cost i already have 2 carb kits a pet**** kit and a engine seal kit will cost $90 pistons will cost $50.i buy alot off ebay. looking to replace all worn out parts

sarnali2 06-05-2011 10:37 PM

Remove license plate, soak motorcycle in warm salt water for 48 hours, instal license plate on new motorcycle.

allanworks 06-05-2011 10:53 PM

i wish i could do that just bought the bike for $600 .its to be a learner bike so if i wreck it im out not that much .how hard is it to replace the valve seals or should i just replace the header gasket and keep an eye on oil level

A Star Ride 06-06-2011 04:35 AM

I wouldn't worry about it if only a visual prpblem is seen, unless you feel something mechanical. Oil leaks are like baby puke. By that I mean, if you poured 2 tablespoons of oil down the engine, it would run to the bottom & drip off, you likely just have a stain from exhaust soot & condensation.

Easy Rider 2 06-06-2011 05:52 AM


Originally Posted by allanworks (Post 261131)
or should i just replace the header gasket and keep an eye on oil level

THAT gets my vote. If the header bolts look to be rusted and frozen, I probably wouldn't even try to do that. If they are moveable, then a TINY tightening might solve the problem too.

I'd say "Enjoy your $600 bike as long as you can, doing as little as possible to it.......and then sell or trade it for $600 in a year or two".

seruzawa 06-06-2011 06:37 AM

At this juncture I'd advise that you scrap that POS and getting something that doesn't require so much effort.

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