Can someone please name this part for me?

[raceperformance]

Can someone please tell me what this is called? I need to order a new one, and can't find it on moss' site. It sits between the manifold and the carb on my 75 MGB.

 

[AlanT]

It is an 'Induction Heater' Part # LZX1084. The hole at the top should have a thermostat that controls the heater coil. It comes on at some very cold temperature that we never have seen here in the deep south.

Alan T

 

[AlanT]

It appears that LZX1084 changed to part # LZX1583 and the last time I see it in a price sheet under a factory part # is 1995.

Alan T

 

[Bret]

That is the induction heater and fits between the manifold inlet & the Zenith Stromberg Carb. The element is missing in the upper smaller hole. Anyway I’ve never really seen a write up as to what exactly the benefit of this device is. But I suspect you don’t really need it and that’s a good thing because I don’t think you can get’em anymore anyway.

However the green wire with the quick disconnect that attaches to the element is live 12Vs and will pop fuses if you don’t tie it back & shrink wrap it or use electrical tape to protect it.

 

[tony barnhill]

Its been on every car I've owned that has a Zenith Stromberg regardless of part of country. When its not working properly, the poor ZS gets the blame.

 

[Nunyas]

and it's purpose is what... warm the air entering the engine to help atomization?

 

[tony barnhill]

Actually, it warms the gas/air mixture

 

[Nunyas]

but... what purpose does that serve?

 

[tony barnhill]

THE ZS carb really doesn't have a choke per say...there's a hose that takes warm air off the exhaust into ther air filter compartment (preheater) & then this heats the gas/air mixture as it goes into the intake....all are making sure the car will start & run automatically in bad weather....usually when there's a problem with the 'auto choke' its because one of those is missing or not working properly or the auto choke needs cleaning.

 

[raceperformance]

You guys are amazingly fast! Thanks for the info.

 

[tony barnhill]

By the way - where's the long round black electrical element that goes in it?

 

[raceperformance]

I have it, it's just not in the picture. I have the wire that goes down it and around the port as well.

 

[AlanT]

I see no good explanation of the induction heater in any of the common workshop manuals. Somewhere boxed away I have the factory publications/updates that only dealers received and I remember reading about this piece in detail but that was about twenty-eight years ago. Twin SU cars also had them as an option in certain climates. I think the induction heater was to prevent icing of the mixture...IMHO.

Alan T

 

[kennypinkerton]

What's wrong with it? Why do you need a replacement?

 

[raceperformance]

[ QUOTE ]
What's wrong with it? Why do you need a replacement?

[/ QUOTE ]
You can't tell in the picture but it's cracked. I have a fuel leak which I thought was the carb, but when I took it off to replace the gaskets, I now think that the leak was actually coming from between the manifold inlet and this spacer, or this spacer and the carb.

 

[jlaird]

Four options.

Get a new one.

Seal the old one, ie stop it from leakein. A good gasket material with goop of some sort.

Just don't put it back in. This is my choice. for the short term anyway.

Make a spacer that thickness if you feel better with it.

 

[raceperformance]

[ QUOTE ]

Just don't put it back in. This is my choice. for the short term anyway.


[/ QUOTE ]
That would be my first choice but the studs coming from the manifold are not threaded until the last inch or so...so without the spacer I run out of thread to seal the carb to the manifold.

 

[jlaird]

Washers, use washers. Hehe, this is a short term fix remember.

 

[tony barnhill]

Well, I probably have some good ones laying around in my engine building.

 

[jlaird]

I saw that building, must be 20 engines in there.