Carburettor joint leak

[Wangler]

Hi

Please can anyone tell me how the brass pipe is attached to the carb?  There is a small weep from where the brass pipe joins the alloy carb body.

Any suggestions as to how to seal the joint would be much appreciated.

[dhla40]

It is a push fit, if you can pull it out and refit with loctite that should be ok. Or if you are brave you could remove the top cover and try running some electrical solder round it.

Sean

[Wangler]

Excellent thank you.

Half the battle with this sort of thing is knowing how it’s fitted in the first place. One can do a lot of damage by pulling too hard on something that’s threaded rather than a push fit. The sneakiest things are probably bolts with left hand threads!

[Wangler]

Am I correct in thinking that the pipe is a push fit that’s then soldered in place, perhaps with silver solder?
I can’t budge it and don’t want to risk breaking it.

[Richard Fridd]

Is it a shrink fit?
I would like to remove a push rod end from an alluminium pushrod so may try mild heat.

Richard

[Wangler]

It could be I guess. Although it seems a strange way to go about getting a properly sealed joint. Going back to my previous question, I suspect that it isn’t soldered in because in those days it would’ve been technically very difficult if not impossible to get a bond between cast aluminium and brass.

Whatever the case I’m left with a leaking inlet pipe that I don’t know how to get out without risking breaking something! I could try heat but that involves taking the top of the carb off which I would rather avoid.

I’ll try a slow setting epoxy petrol proof sealer where the pipe enters the body and see how that works.

[davidwheeler]

Loctite might creep into the joint, otherwise Araldite?   Especially if it is warmed gently so the glue would flow more easily.

[Richard Fridd]

Cut off existing and drill and tap a thread to accommodate a new union?
Richard

[Wangler]

Thanks David, I've just used some regular Araldite, warmed the tube with a mini torch (the one my wife uses for caramelising creme brulee topping - with a fire extinguisher at the ready) and the glue then used an artist's brush to apply. Then I came in and read your post! Great minds think alike?

Fingers crossed, I should know if it works when I test it tomorrow.

[Wangler]

Thanks Richard. I might send it off to a carb specialist if the Araldite doesn't do it.

[Wangler]

Looks as though the Araldite has worked. I'll keep an eye on it and try to remember to put up another post if it fails.

From what I can find, ordinary 2 part epoxy Araldite is pretty well petrol proof.

[chriswgawne]

Just going off slightly at a tangent, whilst the Araldite 2 pack resins are very good, I have found the Henkel 'Nural' 2 pack range to be more effective in certain applications and they certainly bond very well with excellent 'post setting' properties depending upon the specific type used.
The problem is that for some reason they arent available in the UK? Why I wonder when many other Henkel products are?
I have found the best availability is actually in Portugal for some reason so I try to stock up if ever I go there. 
Chris