Morris Minor Owners Club

Okay,

I'm pondering doing battle with the exhaust in the not-too-distant-future (especially since I 'did something' to the original one and it's now leaking again).

Which means switching back to the original ital carb (yay!).

But I still don't know where the oil breather pipe is meant to go. It doesn't have a hole to go into on the (original ital) air filter - and so I'm a bit confused as to where it should go...

...can anyone tell me? The Haynes manual says it goes directly into the carb but didn't go so far as to include a diagram, or anything like that :-/

There should be an upward (well, outwards and upwards) pointing brass tube slightly larger than the others on the rear of the carb (viewed when looking from the front of the car with the carb on). The front breather pipe connects to this. If your carb for some reason does not have this connection (and it should), then leave the breather pipe open to atmosphere. It will still breathe but you won't be 'recycling' the crank vent fumes (no real big deal).

Is the carb a HIF44 or HS6? I'm not sure what was original equipment on an Ital (I suspect HIF44 though). Have you got a piccy of the carb to be sure?

Ah, I think I see the one you mean, at any rate, here's some photos:

HIF carb - Back
HIF carb - Front

Sorry for the quality of the photos, I'm still wearing my 'nice' clothes and didn't want to get too grubby - if we need better ones I can take some after lunch... When I'm planning to go and get all covered in grot.. again

OK. In the 'Back' picture you seem to have a link pipe between the breather inlet and the fuel overflow!

Take this pipe off and use the 'top' connection for the breather. The bottom one should have length of pipe attached and pointed towards the ground as that's the overflow route out for the petrol if the needle valve stops working.

There should also be another connection lower down (can't see it in the piccy) for the fuel inlet.

That one, I reckon. I'm thinking you probably did too...
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Now we're all confused!

Why? Kate asks where the crank case breather connects to, and I reckon (or rather, have always seen) it connected to that pipe.
PS I think - as I 'spect you've noticed, I'm prone to idiocy...

Right, just to cause chaos I've uploaded a newer shot of the back, in the same place...

And this is my [vague stab at] labeling.

I'm 'a bit' confused, 'cos Cam's said that pipe (with it's lovely U bend in it, which has now snapped incidentally) was on the oil breather and the fuel overflow; and that there should be a pipe below it, but in the newer picture (here) you can see there's definately no lower inlet.

So, if we shuffle them using Andrew's breather label as a start, I *think* we end up with... .

Does that look correct? Mind you I've still got to sort out an exhaust fitting routine. Anyone good at bending pipes? I can offer coffee and tea / biscuits!

Right! Well, I can see what going on now in that pic!

Yes that one above is labelled correctly. It looks like the fuel inlet and outlet were connected together!

Ah, now the U-shaped pipe sounds familiar, I think my (HIF38 Metro) carb has one of those. I think it's a 'part throttle weakening device' which Mr Vizard mentions in the little read 'Economy' chapter. My carb does have a breather as well as this, can't offhand remember which end it is though, I think the fuel inlet is the lower one as per your photo though.
If you don't want the U-shaped pipe then I guess you'll have to block off both the pipes it used to connect to. Doesn't do any harm though, you still get full power with full throttle but, allegedly, better cruising economy.

Stig28 wrote:If you don't want the U-shaped pipe then I guess you'll have to block off both the pipes it used to connect to.

Are you talking about the pipe that broke on Kate's carb? If so, then you won't be blocking off both pipes as the top one needs to be connected to the front crankcase breather and the middle one (fuel overflow) needs to have a pipe connected and pointed to the floor.

Cam wrote:Are you talking about the pipe that broke on Kate's carb?

Yes, but I'm guessing that's what it was. If it's got another connection for the breather then one of them will need blocking off, you're quite right about the overflow though (Doh!)
-route it well away from the tyre though as petrol is dead slippery...

Stig, the point of the post was to find out where to put the breather pipe from the engine. The breather connection to the carb is the answer, and bearing in mind that the fuel overflow has been dealt with, then nothing needs blocking off.

Hmm, it looks like it's got two breather connections though, hence one of them goes to the crankcase and the other either loops round to the overflow or gets blocked off. Sorry if I've confused things, I'll have a close look at my carb tonight if I get a chance and see what all the connections actually do. Sadly I don't have a digital camera to post a picture of it though.

Useful aren't they (digital cameras)?

The next thing of course (with wireless internet connection, laptops and webcams) is to have live 'talk me through this' procedures with live 'in garage' action!

Cam wrote:Useful aren't they (digital cameras)?

The next thing of course (with wireless internet connection, laptops and webcams) is to have live 'talk me through this' procedures with live 'in garage' action!

I love the idea of using really hi-tech stuff to diagnose a car designed in the 1940's!

The next thing of course (with wireless internet connection, laptops and webcams) is to have live 'talk me through this' procedures with live 'in garage' action!

well, there is already an MMOC chat room, we just need to add webcam capability.....

Well, it's on hold (again) - anyone recommend a good source of an LCB frontpipe for a 1275 equipped minor?

Only... the ital one I've got is totally inappropriate (Let's not ask how todays mechanic activities went, okay?).

yes me i have one, no seriously, try any moggie shop, esm etc unless one comes up 2nd hand, or try ebay, i think there is a complete system on there for a car