Need to know the thread size on the exhaust side of the cossie block where people take their breather pipes from.

Pic here, stolen from Damo



Anyone know?

Ding - your guess was wrong!

 

5/8 's ?

i wasn't at home

 

LOL - it would appear it's 3/8BSP........

 

Oops 5/8's 3/8's

simular init

 

Okay, up she goes..............

My mate still can't work out the size. It's definitely 3/8BSP, but it might be tapered?

 

They are 3/8 bspt 19 (taper) mate but in dingy's defence 5/8 x 18 unf is a very close fit....

 

Sib, while you're online... quick question...


im thinking of running a laminova cooler to cool my oil rather than an air to air cooler


does this sound ok to you? in your exp ?

 

I thought it might be tapered!

I can't get a BSPT to JIC adapter.

I make 5/8x18UNF equivalent to -7JIC -can that be used?

 

You can get the adapter...I think goodridge do them....i got some recently Rich...i can check in the morning they may have been parellel adapters and we have re-tapped the blocks and used a copper washer....justed checked the catalogue they are listed parellel...goodridge part no 741-06-10...these are the ones we have used to -10 on the breather...

All the other suppliers should have an equiv...

HTH

regards

Ian

 

Rich , its not a Tapered thread as thats a , NPT NATIONAL PIPE TAPER ,
you should be returning below oil level anyway mate !

 

So are they actually 3/8 npt then tony? hold my hand up...I have defo done them to bsp on 2 blocks recently no probs and did exactly the same as rich's mate I thought they were 5/8 unf at first....

 

Tony,

Yes, but surely it could well be a tapered BSP thread.

I'm guessing it is, as I have a 3/8BSP to -10JIC adaptor in my hand, and it fits perfectly as you wind the first few turns before going tight on the thread.

Thread is clean too.............

 

th

 

pond,,thought you were selling your taxi

 

I am.

Thanks for your concern

 

the BSP adaptor is correct mate.....

 

Okay, but I'm not retapping anything - are we concluding that I need a 3/8BSPT to -10 adaptor?

 

surely depends on the size of the return hose and rest of the breather system?

 

Matt - it does return to the sump below oil level anyway.........

 

Put a parellel BSP adaptor in it...... thats what I have used as per the part no from goodridge....no leaks...

 

Rich have you not got any taps you could use to try and find out the size?

 

Cant help you I'm afraid , nice pic though

And just to clarify, the hose in my pic is a breather hose the return to sump is the other side

 

Damo - you on MSN?

 

no mate but email me

be quick though... past my beddiebyes

 

Im using #8 back to my block 3/8 npt to #8 jic i think is what i used

 

Okay - neither 3/8BSP or 3/8NPT fit this fookin block - what is going on?

 

get a set of taps and find out what size its is and save the guessing bother

 

Andy - sensible suggestions just clearly aint gonna work

 

Ring Bailey and ask them

Neil.

 

They don't take their breathers from there

 

Rich ,
just checked this with Ray at Julian godreys, youre right there is such a thing as BSP-T , but its almost identical to NPT anyway . The thread size is 1/4 BSP-T apparently but the 1/4 NPT screws in too .
hope that makes sense .

 

Definitely not 1/4 Tony, as that's tiny!

I have both 3/8BSP and 3/8 NPT sat in front of me, and both will screw in four or five turns, and then tighten up!

This is a real pain in the arse!

 

Errr, how come my bailey breather breathes from there then?

Neil.

 

Did think it was a bit strange ! . Just wind it in , bit of silicone mastic , no worries ..

 

It doesn't - it returns to there

 

Want to bet?

Neil.

 

Rich, it doesnt matter too much... screw it in as tight as poss and some sealant, it will be fine

 

No

Tony - was that a joke?

 

Tell u wot...caused some hassle this one....it is actually 3/8 x 18 npt as tony says....hand held up....but bsp will go as I said.... get the fooker wound in....

 

Rich, I think 30cm will be too short, I checked my list earlier and the shortest I had listed was 15 Inches, BUT I may have over compensated on my measurements... time will tell

Dave, why dont you lend rich your adapter so he can identify it

OH and Rich, do you happen to know the thread size/type on the vacum outlet on the fuel reg off hand??