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Drain plug thread type
Posted: Mon Sep 07, 2015 3:08 am
by gmsclassics
Does anyone know what the Sprint gearbox drain / filler thread sizes are? Is the sump the same? Hopefully I can then get something suitable locally.
Old one measures approx 5/8 diameter and thread is tapered and 18tpi. It would help if I knew what to ask for.
Thanks
Geoff
Re: Drain plug thread type
Posted: Mon Sep 07, 2015 8:47 am
by Magenta Auto Sprint
Sounds like a 3/8 BSP thread. BSP sizes do not relate to the thread diameter but the size of pipe they are intended for.
Hope this helps
Malcolm
Re: Drain plug thread type
Posted: Mon Sep 07, 2015 9:51 am
by Jon Tilson
The drain plugs are also tapered to get a better seal....
ooops I just noticed you already said that...
Jonners
Re: Drain plug thread type
Posted: Mon Sep 07, 2015 1:08 pm
by Mad Mart
I always wrap a bit of PTFE tape around the threads. Not sure of the size though.
Re: Drain plug thread type
Posted: Mon Sep 07, 2015 2:35 pm
by Edin Dundee
Mad Mart wrote:I always wrap a bit of PTFE tape around the threads. Not sure of the size though.
6mm.
That's the PTFE tape I always use.
...
..
.
Re: Drain plug thread type
Posted: Mon Sep 07, 2015 3:34 pm
by geeksteve
Edin Dundee wrote:Mad Mart wrote:I always wrap a bit of PTFE tape around the threads. Not sure of the size though.
6mm.
That's the PTFE tape I always use.
http://i.imgur.com/wJmHyyU.gifv 
Yes.......
Posted: Mon Sep 07, 2015 4:22 pm
by sprint95m
The gearbox (and also engine and back axle) filler and drain plugs are interchangeable.
The BL workshop manual describes it as "3/8" N.P. plug".
Ian.
Re: Drain plug thread type
Posted: Mon Sep 07, 2015 5:01 pm
by Mad Mart
Edin Dundee wrote:Mad Mart wrote:I always wrap a bit of PTFE tape around the threads. Not sure of the size though.
6mm.
That's the PTFE tape I always use.
...
..
.
I knew I should have reworded that.
Re: Drain plug thread type
Posted: Mon Sep 07, 2015 8:06 pm
by lazeruspete
geeksteve wrote:Edin Dundee wrote:Mad Mart wrote:I always wrap a bit of PTFE tape around the threads. Not sure of the size though.
6mm.
That's the PTFE tape I always use.
http://i.imgur.com/wJmHyyU.gifv
perfect gif!
Re: Drain plug thread type
Posted: Mon Sep 07, 2015 10:08 pm
by GlenM
Mad Mart wrote:Edin Dundee wrote:Mad Mart wrote:I always wrap a bit of PTFE tape around the threads. Not sure of the size though.
6mm.
That's the PTFE tape I always use.
...
..
.
I knew I should have reworded that.
Does that mean you're sh#t?