Jump to content

TR2 snorkel breather - it doesn't have one??


Recommended Posts

It should have a snorkel.

 

Peter W

PS The car looks like the horns are on the wrong way.  ie left is on the right and right is on the left

Link to post
Share on other sites

Brian, I would have thought to 'breath' there has to be an 'out' as well as an 'in'.

I have a what I presume is a later, it having the screws for cam bearings, Vanguard engine,

also without the tube type breather, but with a thick 'washer' pressed into the block breather hole.

It has an about 3/8" hole in the centre, which presumably provides the  breathing.

I've not seen/heard of this feature previously.

Roger M-E

 

Link to post
Share on other sites

Snorkel used on TR2/3/4, but deleted on TR4A and fumes from rocker cover then dumped into the carburettors or the inlet manifold.

Some breathing is necessary to avoid pressurising the crankcase etc.

Further investigation required, I suggest.

A 3/8" hole that low down and not fitted with a snorkel is likely to result in a TR, driven in a spirited fashion, sloshing its oil over the road.  The snorkel was fitted to TRs for this very reason.

Ian Cornish

 

Edited by ianc
Link to post
Share on other sites

The snorkel or draft tube is there to use the vacuum generated under the car while moving to extract crankcase fumes and relieve pressure. The breather is incorporated into the oil filler cap and the wire gauze in the cap provides some filtration for the make-up air being drawn into the engine.

The April, 1955 Autocar article entitled  A Triumph of Development describes and illustrates the tube which was an important part of the testing and development of the TR2 engine for high speed work. I assume it would have been present on all TR2s. Without it there would be copius oil leaks due to crankcase pressurization. 

Link to post
Share on other sites

If it is a TS block it should have the breather pipe, so could it be that it is a later block that has had the engine number altered to fit the documents for the car, or could it be a TS block that has at some time been fitted into a 4a and had the hole blanked off, or simply that a PO lost the tube and blanked off the hole.

Whatever the reason, unless you have the later closed circuit breathing system fitted, you will need to find and fit the snorkel.

Ralph

Link to post
Share on other sites

Here are  images of the blanking plug and the engine number.  According to the PO, the car has been off the road since 1973, so I can't imagine the engine has been elsewhere. So it's a mystery. 

I guess I need to source one, any ideas? There's one on eBay, but £60 seems a bit steep. Also I gather removing the plug will be tricky.

 

Breather plug.jpg

Engine number.jpg

Link to post
Share on other sites

Engine No. looks genuine enough, strange it should have the blanking plug.  Maybe a previous owner got rid of the snorkel because they do tend to drip a little oil.

Bob.

Link to post
Share on other sites

Looks like that blanking plug has been added later as factory fitted are in a lot further, you can see the lip of the plug there, should come out reasonably easy then.

Stuart.

Link to post
Share on other sites

I think from memory 28mm copper plumbing pipe fits with a little sealer I’m  sure something could be fabricated to suit. 

Link to post
Share on other sites

Brian - what about this from a forumite ( I think) on ebay: cheaper than £60 and at £50 , that seems to be the lower end of the going rate

https://www.ebay.co.uk/itm/Triumph-TR3-TR4-Crankcase-Breather-Draft-Tube-and-Bracket/143713985336?hash=item2176056338:g:f~wAAOSwKyxfTm2V

 

Cheers  Rich

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
×
×
  • Create New...

Important Information

Please familiarise yourself with our Terms and Conditions. By using this site, you agree to the following: Terms of Use.