Iv got hold of a new transfer box. Before I put it on I'm gona do the breather. So who can tell me what size elbow and tap I need to use. Just the hole is 12mm already
Thanks andy
Transfer box breather
Re: Transfer box breather
Any idears
- Tramp
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Re: Transfer box breather
1/4 bsp, did you pull the collar out if the casing? It's an interference fit,
Edit*
Definatley 1/4 bspf as its the only bsp tap set I have.....
Edit*
Definatley 1/4 bspf as its the only bsp tap set I have.....
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Last edited by Tramp on Sat Apr 13, 2013 9:27 pm, edited 1 time in total.
Re: Transfer box breather
Yeh I took nipple out the hole just seams large for a 3/8
- Ladaman
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Re: Transfer box breather
BSP threads are based on the bore of the pipe, not the outside diameter of the bolt as normal threads are.
If you notice on the table Darrel attached the outside diameter of a 3/8"BSP thread is 0.656" or 16.6mm
Having said all that though, I've just checked mine, and I'm sure it's a 1/4"BSP thread I used which is 0.518" or 13.15mm outside diameter. The hole already in the case is close enough to the correct tapping drill size to not need to drill it out.
I recall I put some grease on the tap to hold the swarf, and had the gearbox as close to upside down as I could get it to stop the swarf entering the casing.
So believe it is 1/4" BSP you really need.
If you notice on the table Darrel attached the outside diameter of a 3/8"BSP thread is 0.656" or 16.6mm
Having said all that though, I've just checked mine, and I'm sure it's a 1/4"BSP thread I used which is 0.518" or 13.15mm outside diameter. The hole already in the case is close enough to the correct tapping drill size to not need to drill it out.
I recall I put some grease on the tap to hold the swarf, and had the gearbox as close to upside down as I could get it to stop the swarf entering the casing.
So believe it is 1/4" BSP you really need.
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Ignis Sport 1.5 16V; Jimny gearbox, 410 transfer box; 5.125:1 Vitara diffs; rear Lockright, Rob Storr full float rear axle, rear discs, YJ springs, virtual lift, 31" Grizzly Claws, beadlock rims, +50mm LR arches, LED rear lights, LED roof spots, bucket seats, Luke harnesses, internal cage
Ignis Sport 1.5 16V; Jimny gearbox, 410 transfer box; 5.125:1 Vitara diffs; rear Lockright, Rob Storr full float rear axle, rear discs, YJ springs, virtual lift, 31" Grizzly Claws, beadlock rims, +50mm LR arches, LED rear lights, LED roof spots, bucket seats, Luke harnesses, internal cage
- Darrell
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Re: Transfer box breather
I've no idea of the hole size , but that makes senseLadaman wrote:BSP threads are based on the bore of the pipe, not the outside diameter of the bolt as normal threads are.
If you notice on the table Darrel attached the outside diameter of a 3/8"BSP thread is 0.656" or 16.6mm
Having said all that though, I've just checked mine, and I'm sure it's a 1/4"BSP thread I used which is 0.518" or 13.15mm outside diameter. The hole already in the case is close enough to the correct tapping drill size to not need to drill it out.
I recall I put some grease on the tap to hold the swarf, and had the gearbox as close to upside down as I could get it to stop the swarf entering the casing.
So believe it is 1/4" BSP you really need.
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Re: Transfer box breather
Thanks guys I shall go for the 1/4