Author Topic: Head gasket  (Read 454 times)

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Online David Wheeler

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Head gasket
« on: April 30, 2018, 01:04:53 PM »
2 things, firstly a uk supplier for solid copper head gaskets and the torque figure for tightening the head down
Thanks

Offline camman3

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Re: Head gasket
« Reply #1 on: April 30, 2018, 01:17:22 PM »
Unless it is a C10 you will not get a torque wrench in, so it is a mild grunt :-\...if it is c10, then 20 ft/lbs is about right.
I think Draganfly are doing solid copper gaskets now, but if not the ones supplied by copper gaskets unlimited in USA, are excellent quality
http://stores.ebay.co.uk/copper-gaskets-unlimited?_trksid=p2047675.l2563

Graham
1957 C12
In sunny (sometimes) Christchurch, Dorset, UK

Offline Ginge

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Re: Head gasket
« Reply #2 on: May 01, 2018, 11:25:29 AM »
I just ordered a solid copper gasket for a C11 from Draganfly.  Should be here in a couple of days.

If you want to hold off I'll report back but I think they are from the same bloke that Cammman linked to.  He has had a few good reports on this forum.
Ginge.

Offline RayC10

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Re: Head gasket
« Reply #3 on: May 01, 2018, 05:49:59 PM »
Got a C10l gasket on back order, no stock at present.
Ray

C10L 1954 at Heacham, Norfick.

Offline ianinglis

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BSA C10L 1956 - JFO 588
BSA C10L 1954 - MVE 107
RM6 RALEIGH RUNABOUT
ENFIELD DIESEL KUBOTA OC 95
BSA M21 RIGID RKN 816
CBF 1000
BSA ARIEL 3

Offline camman3

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Re: Head gasket
« Reply #5 on: May 01, 2018, 06:59:19 PM »
That is the same supplier that I mentioned earlier Ian, I am not certain, but I think David is after one for a C12 :-\
1957 C12
In sunny (sometimes) Christchurch, Dorset, UK

Offline ianinglis

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Re: Head gasket
« Reply #6 on: May 01, 2018, 08:51:50 PM »
that is for RAYC10


IAN
BSA C10L 1956 - JFO 588
BSA C10L 1954 - MVE 107
RM6 RALEIGH RUNABOUT
ENFIELD DIESEL KUBOTA OC 95
BSA M21 RIGID RKN 816
CBF 1000
BSA ARIEL 3

Offline camman3

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Re: Head gasket
« Reply #7 on: May 01, 2018, 09:49:43 PM »
Sorry Ian...I should have gone to..blah blah :-[

Graham
1957 C12
In sunny (sometimes) Christchurch, Dorset, UK

Offline dud

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Re: Head gasket
« Reply #8 on: May 02, 2018, 11:05:04 PM »
Got mine (solid) from Draganfly. seems OK, just anneal if reusing. Also available is high temp copper gasket sealing spray paint from Dupli-Color, which cleans off on disassembly with metho or prepsol.
Phil Irving advises 30lb/" for 3/8"" and 20lb/" for 5/16".
See my post in "Stripped Head Bolts" for torquing procedure.
« Last Edit: May 02, 2018, 11:45:35 PM by dud »

Offline RayC10

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Re: Head gasket
« Reply #9 on: May 04, 2018, 09:01:39 PM »
Nice package from Draganfly waiting for me today in the letterbox.....great! Solid copper head gasket I thought! Nope...in the package a bloody crappy NOS composite mesothelioma inducing thing that I have a shed full of already! Think it best to return and cancel the order. Will check out the link that Ian posted.
Ray

C10L 1954 at Heacham, Norfick.

Offline johnboyfully

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Re: Head gasket
« Reply #10 on: May 16, 2018, 01:07:51 PM »
Just to clarify is it only necessary to anneal if re-using but not from new? JBF

Offline Tman

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Re: Head gasket
« Reply #11 on: May 16, 2018, 02:45:08 PM »
I do it from new too. The stamping-out action work hardens it to a degree, so for five minutes to anneal it before fitting...

Offline camman3

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Re: Head gasket
« Reply #12 on: May 16, 2018, 02:59:31 PM »
As said, does no harm to anneal before fitting a new one, although gaskets from Lani's are laser cut not stamped.
Graham
1957 C12
In sunny (sometimes) Christchurch, Dorset, UK

Offline johnboyfully

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Re: Head gasket
« Reply #13 on: May 16, 2018, 06:20:55 PM »
To anneal or not anneal that is the question 😄 JBF

Offline dud

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Re: Head gasket
« Reply #14 on: May 24, 2018, 10:55:44 PM »
Finally got my head to seal. Replaced worn Tiger cub 9:1 piston with standard 6.5:1, bought from Austria. Annealed gasket sprayed with copper hi-temp paint. Re-torqued at about 50km, it had loosened up considerably. I used external star washers under the nuts, as original, and they loosened off quite a bit. Once again, see my post in "Stripped Head Bolts" for torqing procedure.
Runs better on the lower comp piston, but doesn't do 70mph so readily any more. At least the oil leak into the combustion chamber has stopped.