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Red six fuel pump thread

Can anyone tell me what size the thread is on the outlet side of a red six fuel pump?
I believe it is tapered. Is this correct?
David

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looking at one i have here i'd say 5/16 unf
but most fuel brass fittings are a gas thread so i'm unsure on the pitch
yes its a tapered fitting

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I would of said BSP thread ?
British Standed Pipe

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"just my 2cents worth"

"were going to need a bigger shed"
trippled75@yahoo.com.au
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I would of said BSP thread ?
British Standed Pipe

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"just my 2cents worth"

"were going to need a bigger shed"
trippled75@yahoo.com.au
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They leak oil because the holes are open to the crankcase.

The threads must have sealant or thread tape on them...

http://holdenpaedia....

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T

My Shed

Holdenpaedia, they're the brakes Mate.

The thread on the outlet of a Holden 6 fuel pump is 1/8" NPT, not BSP.

Dr Terry

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That’s right bsp a cors thread and npt a fine thread
I had a feeling I wasn’t right, that’s why I said I thought.
thanks DR Terry

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"just my 2cents worth"

"were going to need a bigger shed"
trippled75@yahoo.com.au
This will take You to" Old Holden sheds"
https://web.archive....

Thanks everyone. Got it sorted.
I put a new Carter type fuel pump on, but I couldn't get the brass plug to seal on the unused outlet.
The instructions specifically said do not use thread tape, so I put some sealant on the thread, but it wouldn't seal.
A wise man once said, 'If at first you don't succeed, ignore the instructions."
I put some thread tape on and it's all good.
I was worried it might be the wrong brass plug, because it screwed virtually all the way in by hand.
The old pump started leaking. I think it had been crook for a while because it seems to start and idle happier now. Maybe the old girl just likes a bit of attention.
I'm off to Coffs for the WRC on Wednesday so I'll see how it goes on a long run up the highway.
David

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Old is good.

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