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Re: non-vented TR4 gastanks?

To: CarlSereda@aol.com
Subject: Re: non-vented TR4 gastanks?
From: Malcolm Walker <walker05@camosun.bc.ca>
Date: Thu, 27 May 1999 22:47:12 -0700 (PDT)
Cc: triumphs@autox.team.net
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


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