I lOvE mY lAnDy

New Member

• May 31, 2011

• #1

I have just bought a rear diff guard and it bolts onto the bottom of the diff, does anybody know what thread the two holes are? i haven't got a thread gauge small enough to get into the holes :/

 

jamesmartin

Well-Known Member

• May 31, 2011

• #2

whitworth ,bsc

 

Mr Noisy

Coming in your ears.

• Jun 1, 2011

• #3

Something quite old. 3/8" BSF im pretty sure, I have a tap which I cleaned mine up with, just can't remember for sure without looking!

 

I lOvE mY lAnDy

New Member

• Jun 5, 2011

• #4

Thanks its a whitworth and its a 5/16 thread.
Cheers for the replies and help

 

Mr Noisy

Coming in your ears.

• Jun 6, 2011

• #5

BSF or BSC? just curious to know whether i remebered correctly...

cheers anyway

 

jamesmartin

Well-Known Member

• Jun 6, 2011

• #6

bsf you were right ,its a bolt i allways save when stripping diff even though dont send diffs with them

 

Mr Noisy

Coming in your ears.

• Jun 6, 2011

• #7

yeah luckily my qt diff guards came with bolts, otherwise i would have been fairly snookered.

luckily my dad had a bsf tap set in his old tool box, i needed to tap out the holes to clean them up and a new one was rather dear!!

 

Mr Noisy

Coming in your ears.

• Jan 26, 2012

• #8

Just to clear this up, they're 3/8" BSF.

 

joe1972

Well-Known Member

• Jan 26, 2012

• #9

Now there's a coincidence....I was under m bobtail RRC yesterday wondering what the options are in terms of mounting the front QT guard I got, when it already has a Gwyn Lewis steering rod guard on....
I had thought about modifying the mount, so both guards use the same two bolts to hold them on the base of the diff..so I would've needed longer bolts to do that job.....and was about to look see what threads they are.
However, after further thought have decided not to go down that route, instead gonna mod the QT unit to weld on to the rod guard