AMAL 2 Jet Carb- Threads

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Polybus
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AMAL 2 Jet Carb- Threads

Post by Polybus »

Can anyone tell me the size/thread pitch for the two jets inside the AMAL 2 Jet Carby?

I have a body that I would like to use, but the threads in the hole for one of the jets (the smaller of the two jets) is a bit chewed up, so I'd like to run a tap/thread chaser through it to clean it up.

The thread for the banjo bolt is still pretty good, so I think this is definitely worth the effort to save.

Thanks.

Polybus.
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Nudge
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Re: AMAL 2 Jet Carb- Threads

Post by Nudge »

I will measure them in the morning for you
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Horsley-Anarak
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Re: AMAL 2 Jet Carb- Threads

Post by Horsley-Anarak »

I think they are an odd size.
Could even be their own size, Charles did say something about it in the past.
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Oyster 49
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Re: AMAL 2 Jet Carb- Threads

Post by Oyster 49 »

Is a tap available to cut that thread?
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Charles uk
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Re: AMAL 2 Jet Carb- Threads

Post by Charles uk »

H-A that was the jets for the 400 series Amal which were M7.

The only 46N threads I played with was for stainless inserts for the Banjo bolt thread, sorry.

It's a very short thread in poor material, you might do more harm than good with the correct tap, or you could just glue it in place with a spot of Araldite.
Make it idiot proof and someone will make a better idiot.
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Oyster 49
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Re: AMAL 2 Jet Carb- Threads

Post by Oyster 49 »

What’s the thread size?
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Nudge
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Re: AMAL 2 Jet Carb- Threads

Post by Nudge »

It is 28 TPI 55° 5.09mm over the high points of the threads.(on the one I looked at) I will have a look in my book and see if I can work it out better

It could be 7/32-28 BSF another way to check would be to see if a 4.60mm or #15 drill goes in the hole. I don't have one to check.
Last edited by Nudge on Mon May 20, 2019 9:43 am, edited 1 time in total.
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Charles uk
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Re: AMAL 2 Jet Carb- Threads

Post by Charles uk »

13/64" x 28 tpi that is a weird one, forget looking for a tap.
Make it idiot proof and someone will make a better idiot.
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