Honda-SOHC

SOHC.co.uk Forums => CB500/550 => Topic started by: paulbaker1954 on April 08, 2019, 01:19:00 PM

Title: Head Oil Leak
Post by: paulbaker1954 on April 08, 2019, 01:19:00 PM

Have a small oil leak definitely coming from head (suspect O rings between barrel and head)

This is a new replacement head gasket and O rings from a recent top end rebuild so its not an age thing

Trig did comment on a prior post that aftermarket O rings are often thinner than OEM so could cause this.

What I wanted to ask, is if it is worth just slacking off and re-torquing the head bolts (I know this is often a should do after a new head gasket and I didn't do it) before going the whole hog and installing OEM gasket and O rings.

Cheers

Title: Re: Head Oil Leak
Post by: K2-K6 on April 08, 2019, 01:27:33 PM

By way of investigation,  you could go round them with your torque wrench set to same as when you assembled it to see if they "click" at that setting.

This will at least tell you if they are holding any less tension than prior to running.

If loose,  then there may just possibly be some benefit in re-torqueing them to spec.

If they all click OK,  you would probably looking at replacement seals / gasket to effect a cure.

Title: Re: Head Oil Leak
Post by: Johnwebley on April 08, 2019, 04:15:02 PM

When re torquing.slacken off first

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Title: Re: Head Oil Leak
Post by: MrDavo on April 08, 2019, 05:18:48 PM

Quote from: Johnwebley on April 08, 2019, 04:15:02 PM

When re torquing.slacken off first

I didn't know that! Old dog, new tricks etc..

Title: Re: Head Oil Leak
Post by: paulbaker1954 on April 09, 2019, 10:04:07 AM

Quote from: Johnwebley on April 08, 2019, 04:15:02 PM

When re torquing.slacken off first

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Thanks John
Thats what I thought was the correct procedure