Joined: Aug 2017 Posts: 1,715 Threads: 47
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Location: Auckland NZ
Car type: 36 Nippy, 31 RM, 38 Special, 24 Works Rep
I have been hearing rumours coming out of the UK that the Silicone Base gaskets have not been entirely successful for some people, I wondered if those who have first hand experience could provide feed back.
Personally I have used a couple now with complete success, my Nippy has covered 4000miles since fitment and is still completely oil tight, as a result I was surprised to hear negative rumours.
Black Art Enthusiast
Joined: Aug 2017 Posts: 882 Threads: 48
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Location: North Wiltshire
Car type: 1927 Chummy, 1938 Big Seven 1/2 a Trials Chummy
I used one on my Chummy (mag) engine, 2000 miles and no leaks.
Joined: Mar 2015 Posts: 5,445 Threads: 231
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Location: Scotchland
17-04-2018, 10:39 AM
(This post was last modified: 17-04-2018, 12:34 PM by Ruairidh Dunford.)
I have fitted a good number now (possibly 20-30) all have been 100% successful in my experience.
Faces must be completely clean prior to assembly, I leave the block for 24 hours before setting the tappets to allow for settlement.
Joined: Aug 2017 Posts: 59 Threads: 4
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Location: Northland New Zealand
Used it on my first engine build last year and have had no issues with it. Now just need to sort out the tappert cover.
Joined: Aug 2017 Posts: 3,394 Threads: 106
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Location: Darkest Bedfordshire
Has anyone tried using them with a spacer plate under the block, and if so what did you do exactly? (2 gaskets?)
And has anyone measured the fully compressed thickness of the gasket?
Thanks
Joined: Aug 2017 Posts: 1,715 Threads: 47
Reputation:
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Location: Auckland NZ
Car type: 36 Nippy, 31 RM, 38 Special, 24 Works Rep
Thanks guys, as I suspected these rumours are unfounded and quite simply hear say, but like all rumours they can be damaging if not stopped.
Black Art Enthusiast
Joined: Aug 2017 Posts: 176 Threads: 11
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Location: Upton upon Seven
Car type: 1931 RN, 1933 RP
1000 miles since fitting and the joint is rock solid. No problems at all. As suggested, the joint needs to bone dry otherwise the gasket squishes around to a misaligned position when the block is tightened down.
Roly
1931 RN, 1933 APD
Joined: Aug 2017 Posts: 865 Threads: 74
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2500+ miles with no leaks. My modern Skoda leaves more oil on the drive than the Ruby!
Peter.
Joined: Aug 2017 Posts: 1,715 Threads: 47
Reputation:
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Location: Auckland NZ
Car type: 36 Nippy, 31 RM, 38 Special, 24 Works Rep
Hahaha, yes it is quite a revelation to be able to park your seven on someones drive with out having to apologise for the mess!
Black Art Enthusiast
