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base gasket failure?

Started by HARTLESS, July 26, 2013, 06:25:08 PM

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HARTLESS

anyone ever had it happen without taking anything apart and ripping it? think that I developed an oil leak from it last weekend. not 100% sure yet though
STRIVE FOR PERFECTION, SETTLE FOR EXCELENCE

I ride HARTLESS or don't ride at all!

ribbert

Quote from: HARTLESS on July 26, 2013, 06:25:08 PM
anyone ever had it happen without taking anything apart and ripping it? think that I developed an oil leak from it last weekend. not 100% sure yet though

Yes I've seen a few that get damp around there. Even on motors that have never been touched.

This is me fixing a base gasket leak currently.



Top end gasket set, rings and hone.  In my case, a check of the valves after taking the head off showed the seats are a bit crappy and probably not worth putting back together without doing them.
$400-$500 in parts plus labour.

If it's just weeping, live with it.  Mine unfortunately was a full blown leak.

Noel
"Tell a wise man something he doesn't know and he'll thank you, tell a fool something he doesn't know and he'll abuse you"

fj11.5

Not an fj, but my gsx base gasket leaked from the day I paid for her , till selling her 9 years later, never weaped any more or less
unless you ride bikes, I mean really ride bikes, then you just won't get it

84 Fj1100  effie , with mods
( 88 ) Fj 1200  fairly standard , + blue spots
84 Fj1100 absolutely stock standard, now more stock , fitted with Fj12 twin system , no rusted headers for this felicity jayne

racerrad8

Yes, it was a problem that Yamaha addressed with the current replacement gasket. It is no longer a paper/fiber gasket which was prone to tearing due to heat cycle expansion/contraction. I was a really big problem on the race cars where we see much higher engine temps.

It also became more of a problem with the larger sleeve/bore of the 1300cc engine and the loss of gasket surface at the block.

The replacement gasket is a steel gasket with a sealant sprayed on each side. These gaskets are almost bullet proof, except for when they get hot enough to melt the sealant from the gasket surface, I have only seen this happen one time.

I will never use a fiber gasket again, only the current steel one; Yamaha Base Gasket, Steel .010

I am currently out of stock awaiting my Yamaha engine order which I hope arrives next week.

Randy - RPM
Randy - RPM

HARTLESS

ok, makes me feel a little better. happened after a long hot traffic delay so I was (still kind of am) a little nervous. its not profuse, but it is enough to leave a couple drips after a ride.
STRIVE FOR PERFECTION, SETTLE FOR EXCELENCE

I ride HARTLESS or don't ride at all!

Harvy

Quote from: ribbert on July 26, 2013, 09:09:37 PM
Quote from: HARTLESS on July 26, 2013, 06:25:08 PM
anyone ever had it happen without taking anything apart and ripping it? think that I developed an oil leak from it last weekend. not 100% sure yet though

Yes I've seen a few that get damp around there. Even on motors that have never been touched.

This is me fixing a base gasket leak currently.



Top end gasket set, rings and hone.  In my case, a check of the valves after taking the head off showed the seats are a bit crappy and probably not worth putting back together without doing them.
$400-$500 in parts plus labour.

If it's just weeping, live with it.  Mine unfortunately was a full blown leak.

Noel


Noel, that one on the right mate..... it won't fit in  the frame!



lol
Harvy
FJZ1 1200 - It'll do me just fine.
Timing has much to do with the success of a rain dance.

56 CHEVY

What is that engine was to the right of the FJ engine?

movenon

Kind of looks like a Model A ?
Life isn't about having the best, but about making the best of what you have...

1990 FJ 1200

Firehawk068

It looks like it's out of a tractor or something, and since it probably only makes 16 horsepower, I would put it back where it came from   :sarcastic:
Alan H.
Denver, CO
'90 FJ1200

Pat Conlon

The irony is that those old engines outlasted my grandfather, and my dad, and will still be around long after I'm gone....and probably my grand kids.
1) Free Owners Manual download: https://tinyurl.com/fmsz7hk9
2) Don't store your FJ with E10 fuel https://tinyurl.com/3cjrfct5
3) Replace your old stock rubber brake lines.
4) Important items for the '84-87 FJ's:
Safety wire: https://tinyurl.com/99zp8ufh
Fuel line: https://tinyurl.com/bdff9bf3

HARTLESS

 soooo.... i decided to check and see how tight the head bolts were and they were just barely not to spec. so i re torqued them but i also noticed my valve cover bolts were super loose. tightened them and the leak isnt as leaky. now, before i posted this post origionally, i had tightened the valve cover bolts not to long before that. is there any tricks to keeping them tight? not sure if i want to use locktite on valve cover bolts....... :sarcastic:
STRIVE FOR PERFECTION, SETTLE FOR EXCELENCE

I ride HARTLESS or don't ride at all!

rktmanfj

Quote from: HARTLESS on August 20, 2013, 10:01:32 AM
soooo.... i decided to check and see how tight the head bolts were and they were just barely not to spec. so i re torqued them but i also noticed my valve cover bolts were super loose. tightened them and the leak isnt as leaky. now, before i posted this post origionally, i had tightened the valve cover bolts not to long before that. is there any tricks to keeping them tight? not sure if i want to use locktite on valve cover bolts....... :sarcastic:

How fresh are the seals?
Randy T
Indy

Blessed be the LORD my strength, which teacheth my hands to war, and my fingers to fight.
Psalms 144:1

'89 FJ1200
'90 FJ1200
'78 XT500
'88 XT350