Author Topic: 376 flange distance washer and gasket question  (Read 171 times)

Online scotty

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Treating my 376 carby to a clean and new gaskets and it’s got me wondering
about the spacer between the manifold on the iron head and the drip shield thingy. My parts manual calls it a flange distance washer
I don’t have the distance piece in there just a rather thin gasket.
Is this a critical thing?
Can anyone advise the correct thickness of spacer?
Also my carby has an o ring on the mounting flange
Should I also be using a gasket between carby and drip shield or is o ring alone sufficient?
cheers
S

Scotty
'56 A10 Red Flash
'54 B33
'98 HD FLHTPI
‘74 BMW R75-6

Online mikeb

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Re: 376 flange distance washer and gasket question
« Reply #1 on: 06.03. 2019 01:00 »
do you mean the tuffnol spacer? its a fat brown thing about 1/4" thick that stops heat transfer from head to the carb. its a good idea - I'd want one. available online and the usual suspects.
the sequence should be: head , paper gasket, drip tray, paper gasket, tuffnol , o ring , carb

put heaps of friendly goo on the joins and don't overtighten the mounting nuts as you can easily distort the carb body so that the slide stick open. i use nyloks or consider blue loctite, so it does not need to be tight.
the o-ring can get hard and old - make sure it isn't as can also help distort the carb. some people do away with the o-ring and add goo - whatever makes it gas tight and snug.
New Zealand
'61 Super Rocket  - '47 B33 -  '18 Triumph Street Triple RS

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Online scotty

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Re: 376 flange distance washer and gasket question
« Reply #3 on: 06.03. 2019 21:05 »
Thanks to the two Mikes !

I can see what I need to do

S

Scotty
'56 A10 Red Flash
'54 B33
'98 HD FLHTPI
‘74 BMW R75-6