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Re: non-vented TR4 gastanks?

To: Malcolm Walker <walker05@camosun.bc.ca>
Subject: Re: non-vented TR4 gastanks?
From: Amy Jo Black & Tony Zager <amyjo@tranquility.net>
Date: Fri, 28 May 1999 11:43:38 -0600
Cc: triumphs@autox.team.net
References: <Pine.OSF.4.10.9905272243310.23580-100000@ccins.camosun.bc.ca>
Malcolm Walker wrote:
> 
> On Fri, 28 May 1999 CarlSereda@aol.com wrote:
> 
> > I am checking gaskets and fuel lines during my restoration but found I don 
>'t
> > have a vent fitting and tube at top of tank like in all the pictures! All my
> > books/catalogues show vents on TR3 and TR4 gas tanks. I don't even have a
> > hole for a fitting! Anyone else know if they have or don't have a vented gas
> > tank? It's really like an overflow escape in my opinion as the gas cap is
> > vented. Just wondering....
> 
> You have a TR4A / TR250 / TR6 tank.  These tanks are vented via the cap
> instead of via a draught tube.  (The may even have started doing this by
> late TR4; someone else may have a more accurate answer as to when the
> changeover from vented-tank to vented-cap was made)
> 
> I have a '62 TR4 and it has a vented gas tank.  As I am nowhere near the
> original owner, I can't say that it's the original tank (but I sure had a
> lot of rust removed from it... chances are, it is)  The vent was a banjo
> fitting and a tube that went down through a hole in the body and pointed
> at the ground.  I don't think it does much overflowing, a little gas might
> get out on hard corners with a full tank, but I seem to remember a bit of
> a baffle on the tank-side fitting, guess that stops most of the splashes
> from coming out.
> 
> -Malcolm
> * There is a FAQ for this list!  Its new home is:
> http://www.islandnet.com/~walker05/triumph/trfaq.htm

I have a TR 4 with a later non-vented tank.  Should I get a later vented gas 
cap 
to go with it, or just hope my rotted cap seal does enough?

Tony Zager
1963 TR 4

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