gaskets

[Aldoo]

Can anyone tell me whats the difference?
http://www.halfords.com/motoring-travel/tools-diy/head-gasket-exhaust-repairs?type=Gasket++Maker+%2F+Sealant
They all seem the bloody same to me! :confused:

its looking like im going to have to sort the common 'curvy clutch housing leak' so i want to have this ready for if needed
And am i right thinking that a 3-3.1mm sponge cord will do for the outer housing o-ring?

Cheers :)

Changed title - it now appears to be from a breather ...but its still not that simple! :confused:

[Bibio]

in the older days we used to lap the casings.

get a nice thick piece of glass (old 70/80's nest of tables) and put the casing on the top. next get a bit of paper and start trying to slide it under the casing to see if its warped, depending on how bad it is you either buy a new casing or lap the one you have. to lap the casing you get some valve grinding paste and place on the glass then start moving the casing in a figure of 8 till the gap in gone. it takes a while but its cheeper than sending it to a machine shop.

once its been lapped you then use the OEM gasket with a very thin smear of sealer on each face of the gasket, too much sealer is bad and ends up inside the engine, this i why you put the sealer on the gasket first so you only get a very thin film of it. you must also get all the old gasket off as well without scraping (if you do have to scrape then use something plastic like an old credit card) using gasket remover.

gasket sealer is not a gasket and will not help sealing warped surfaces.

if your going to use cord remember that you need to glue the ends together to form a ring and never use gasket sealer on it, to hold it in place use a small smear of RRG. its the crushing action on the cord that seals the surfaces.

remember keep it clean grit and oil on any of the mating surfaces is goodnight and you have to start again.

always tighten bolts in a star pattern going furthest to furthest, first finger tight then hand tight and finally torqued to the right setting (its the only time i ever really use a torque wrench is on engines)

hope this helps.

[rictus01]

I don't think I've done that in the last 20 years Lance, proper old school ( mind you I've done a few valves, I've my dads valve lapping tool and his pot of paste in my shed) .

I believe the curvy clutch cover is plastic, most of the "warped" ones I've seen have been either overtightened or bolted down asymmetrically at some point, I've had some success gently heating it and carefully mating it up hand tight until cool.

Oh and the difference between the various "instant gaskets" available is generally how solid they set (some go solid/ some semi), strength and specific application (heat rated and alike).

[Geodude]

Mine leaked even with a new gasket in it so i took it off and then used some loctite 5910 (pictured) stopped leak and its held for the last few years.





http://www.fishermotorfactors.co.uk/media/catalog/product/cache/1/image/500x500/9df78eab33525d08d6e5fb8d27136e95/L/o/loctite5910.jpg

Old post of mine and the 5910 is still working :)

[Aldoo]

thanks for the help guys :)

Im still trying to pin point it at the moment

The common leak is from the small circular part, however mine has had the full thing replaced, the big section that holds the water pump too. (when i bought it the p.o. told me he'd had a new one fitted just for visual reasons)

Im not sure if its actually that part thats leaking now..

[Aldoo]

I hate this thing! Lol
Cleaned the engine so I could find it.
Started it on the side stand till it was hot then killed the engine - no leak
So I put it on the paddock stand and did the same ...still no leak!!

Yet every time I ride it and park up it smokes like mad!


The investigation continues..

[Aldoo]

I've had a ride today and found that its coming from a breather pipe just by the clutch cover.

Ive looked up this hose cant really find what it is. here is a pic of it i found from a google search

http://www.reddit.com/r/motorcycles/comments/2jg7f7/what_is_this_black_rubber_tube_for_that_is/
Unfortunately the site is full of people who either arent sure or are comedians lol

From searching the internet and here it is said to be either a fuel or coolant breather pipe - so why is mine leaking oil?
Another thing i think you may suggest is to check the pipes on the airbox - they are both connected :)

Cheers guys

[Bibio]

for a start you need to check your oil level when the bike is on the ground and upright off the side stand to make sure that its not over filled.

that hose is for your petrol tank and cooling expansion bottle. so might be worth checking how much coolant is in the system. if its filled to much then when the bike gets hot it will drain the excess out through that hose, it might look like oil as the inside of the hose could be dirty. if its not filled to much then it could just be the system is finding its own level.