Cylinder oil leak HELP please

Red-leader · 03-Apr-2006, 10:39

After dropping out the engine and changing the O rings on the rear cylinder head its still leaking oil from that area.
Is there any other reason for the leak please ?
I know they all weep a bit but mine is chucking it out. I thought that the O rings would cure the problem.
Its a 91 900ss.
Help Kev !!!!

Iconic944ss · 03-Apr-2006, 11:16

Is it deffo the head - or are you spotting the oil deposits on the crankcase top?

If thats the case it could be the oil breather instead.

Only other things I can think of from the top of my head (after a nightshift) - is valve cover / head torque not correct / oil feeds ???

Good luck - Frank

[Edited on 3-4-2006 by Iconic944ss]

Red-leader · 03-Apr-2006, 11:27

Its the head, the top 6 cooling fins are dry as a bone.
The one on the joint is wet with oil.
Why should it still leak after changing the O rings ?
Operation went without a hitch. All changed over with no drama.
Is there another answer?
Oil breather was changed a month ago.
Help

Henners · 03-Apr-2006, 11:29

Considered a nice VFR ??

Iconic944ss · 03-Apr-2006, 12:01

Henners...dont be naughty and go directly to the H*nda forum !!!

Kev, I didnt realise the head is only sealed using the 'O' rings - I honestly thought there was a gasket of some sort on top of the barrel.

Looking at the parts pdf it shows TWO DIFFERENT part numbers for the O rings used - could you have used wrong ones or got them mixed.

Otherwise - I'm stumped and can only think of awful things like distorted head or barrel OR perhaps your oil pressure is running too high for some reason...

CALL FOR SUPER-NELLY !!!!!!!!!!!!!

Sorry - Frank

Red-leader · 03-Apr-2006, 13:49

There are two different size O rings. One small one and two large.
Or did you mean two different types ?

UKRR · 03-Apr-2006, 14:33

My SS had an oil leak when the cylinder stud snapped - a common faul with early SS engines.
Strengthened studs are available

Red-leader · 03-Apr-2006, 15:30

No problems in that department all studs are at the correct torque. Thats what I cant understand, everything is as it should be !

03-Apr-2006, 15:33

so all your studs are up to the job ??? Mrs Leader will be happy .... shame about the messy leakage though ..... :P

cheers for the cuppa yesterday .....

Henners · 03-Apr-2006, 16:12

Sounds like something's warped Kev ...

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03-Apr-2006, 11:29	#4
Henners Registered Forum User Ducati Corse Posts: 3,338 Join Date: May 2002 Considered a nice VFR ?? Reply

03-Apr-2006, 13:49	#6
Red-leader Registered Forum User 500SD Posts: 882 Join Date: Oct 2002 Location: Chertsey Mood: wobbly !!! There are two different size O rings. One small one and two large. Or did you mean two different types ? Reply

03-Apr-2006, 14:33	#7
UKRR Registered Forum User Mille Posts: 147 Join Date: Sep 2004 Location: cheshire Mood: Got the S - waiting for the Termi's My SS had an oil leak when the cylinder stud snapped - a common faul with early SS engines. Strengthened studs are available Reply

03-Apr-2006, 15:30	#8
Red-leader Registered Forum User 500SD Posts: 882 Join Date: Oct 2002 Location: Chertsey Mood: wobbly !!! No problems in that department all studs are at the correct torque. Thats what I cant understand, everything is as it should be ! Reply

03-Apr-2006, 15:33	#9
Dibble Posts: n/a so all your studs are up to the job ??? Mrs Leader will be happy .... shame about the messy leakage though ..... :P cheers for the cuppa yesterday ..... Reply

03-Apr-2006, 16:12	#10
Henners Registered Forum User Ducati Corse Posts: 3,338 Join Date: May 2002 Sounds like something's warped Kev ... Reply