I've been and gone and done it. The drilling and tapping of the rear Diff box.

Thanks to the forum, I drilled out the existing 11.5 mm blind hole with a 12 mm HSS drill bit. It was too tight to use my 18v hand drill so I bought one of these and it worked very well to get in the space.

https://www.toolstation.com/shop/p40354?table=no


I tapped the 12mm hole out with a 14mm 1.5 thread pitch (2nd hand) tap. I used a 14mm 1.5 pitch sump plug and crush washer that I had lying around from my previous car. I have put a strong magnet on the sump plug in the hope it will magnetise the plug to catch any metal bits.

Last edited by I Like Chips on 27th Jul 2017 7:27 pm. Edited 1 time in total

Im thinking of doing this - I got some some info from Austen at Bell Engineering. Got any pics ? Jules

I don't have a mobile phone so no pics. Its so easy to do.

Hi guys!

Sorry for my ignorance but what does doing this acheive!? Is it a preventative actuon for anything!?

Regards
Ash

It makes a easy oil change for the rear diff a doddle. I have also put a drain plug in the front transfer box using the existing bolt hole.

"existing bolt hole" not looked yet but is there one? I sucked out the oil (a real pain!) but didnt notice a 'bolt' please expand and a photo would be good....

It's been photographed and done before on the Front Transfer box

http://www.freel2.com/forum/topic14659-15.html


The rear diff has a blind drilling that needs to be drilled and tapped, or rather my one has. Again there is a prexisting photo showing the hole


http://www.freel2.com/forum/topic14659-30.html

Thanks for the link...