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head gaskets

Started by theLeopard, August 09, 2015, 11:27:05 AM

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theLeopard

anyone have experience with head gaskets.
i guess i blew one (or more) of mine.

engine expells compression from some unidentified location and misfires.
occassionally dies at 1000rpm idle.

gonna read thru my manual but tips & advice are always welcomed.
1992 FJ1200

Quote from: George"It is What It Is Until It Ain't Anymore"

theLeopard

im browsing thru my manual.

only head gasket i can find is the valve cover gasket and i aoready replaced that.

am i missing something?
1992 FJ1200

Quote from: George"It is What It Is Until It Ain't Anymore"

FJmonkey

Quote from: theLeopard on August 09, 2015, 12:40:31 PM
im browsing thru my manual.

only head gasket i can find is the valve cover gasket and i aoready replaced that.

am i missing something?

Is item 5 what you are looking for?
http://www.ronayers.com/oemparts/a/yam/50043271f8700209bc78b2cb/cylinder

Or item 18?
http://www.ronayers.com/oemparts/a/yam/50043271f8700209bc78b2ca/cylinder-head

Either one can be sourced from Randy at RPM quite quickly if needed fast. Plus he will have good prices and can supply all the other bits you will need for this job.
The glass is not half full, it was engineered with a 2X safety factor.

'86 Ambulance - Bent frame, cracked case, due for an overhaul
'89 Stormy Blue - Suits my Dark Side

theLeopard

randy has the gasket. not sure why i havent found it in my manual yet but its the aluminum gasket for the heads not the valves


ooc does randys carb rebuild kit have stock jets or the recommended (larger) jets?
110/42.5/155
https://www.rpmracingca.com/proddetail.asp?prod=Carb%3Arebuildkit3&cat=39
1992 FJ1200

Quote from: George"It is What It Is Until It Ain't Anymore"

movenon

My knowledge of the head gasket is limited to the one time I pulled the FJ head but to add to the knowledge base when shopping for a FJ 1200 head gasket you can run across 2 different Yamaha versions.  The picture below shows the difference.  The top one is the newer style and the one you probably want. RPM sells the newer version I am sure.  The older version you will see on e bay and resellers of discontinued parts so heads up.



If you do the job you will need a couple of special copper washers and seals also.

Your comment on  "engine expells compression from some unidentified location" could also be a valve.  
George
Life isn't about having the best, but about making the best of what you have...

1990 FJ 1200

FJmonkey

Quote from: theLeopard on August 09, 2015, 01:08:46 PM
ooc does randys carb rebuild kit have stock jets or the recommended (larger) jets?
110/42.5/155
https://www.rpmracingca.com/proddetail.asp?prod=Carb%3Arebuildkit3&cat=39

I am sure you can request what jet sizes you want, and Randy can make recommendations once he knows more about your bike.
The glass is not half full, it was engineered with a 2X safety factor.

'86 Ambulance - Bent frame, cracked case, due for an overhaul
'89 Stormy Blue - Suits my Dark Side

theLeopard

ugh.
i wanted to rebuild the engine looks like i may get my wish :dash2:

found the gasket in the book, 3-46.
I'll pick up the engine gasket kit also,  trying to fix an oil drip maybe ill get lucky.
1992 FJ1200

Quote from: George"It is What It Is Until It Ain't Anymore"

theLeopard

while were on the subject when i decelerate via compression i occassionally hear this sound which i can only describe as jingling keys.
1992 FJ1200

Quote from: George"It is What It Is Until It Ain't Anymore"

Steve_in_Florida

Quote from: theLeopard on August 09, 2015, 01:27:46 PM
while were on the subject when i decelerate via compression i occassionally hear this sound which i can only describe as jingling keys.

I have to ask: Have you accounted for all your keys?

Steve  :pardon:
`90 FJ-1200
`92 FJ-1200

IBA # 54823