mk1-forum.net

I have just removed an original Oil pressure gauge oil pipe fitting from a Mk 1 S block and now want to fit it into a 998 A+ block but the thread is different.
Can someone tell me what the correct thread size is please, or give me a lead on a fitting that I can buy and use.

Cheers.
David

Never mind, I believe I have answered my own question.

http://www.minispares.com/product/Class ... |Back%20to

Hey? I thought they were all 1/8" NPT from start to finish.

So did I, but the original fitting wont screw into the A+ block. The block is not damaged in any way, they are just different sizes.

Mine has been moved between both old A series, and later A+ - without trouble.

I'm sure I've seen 60's A series engines oil take off fitted with a copper washer, so were probably 1/8 BSPP.

Having said that oil pressure senders are 1/8 NPT, but they would nip up and hold pressure on a parallel thread.

850man wrote:So did I, but the original fitting wont screw into the A+ block. The block is not damaged in any way, they are just different sizes.

Sounds like one of the butchers from your favourite forum have been at it.

I'm sure I've seen 60's A series engines oil take off fitted with a copper washer, so were probably 1/8 BSPP.

Here is what I have - http://www.minispares.com/product/Class ... o%20search
Mine is original BMC, not repro.

Having said that oil pressure senders are 1/8 NPT, but they would nip up and hold pressure on a parallel thread.



I believe the block is 1/8 NPT and what I am trying to screw into it is 1/8 BSP. Strange because I have fitted hundreds of the oil gauge fittings into A series blocks without an issue but now I am trying to fit one to an A+ block it wont screw in.

Its not damaged in any way, a normal oil pressure switch screws straight in.

I'll have a look at a Cooper S Block when I go down to the workshop later.

Spider wrote:I'll have a look at a Cooper S Block when I go down to the workshop later.

I removed the fitting from an S block, that was fine, its the newfangled A+ thing that's giving me grief.

Not 100% sure but isn't the SPi A+ block of later vintage an M10x1.0mm?