looks like a bit of an oddball size, just measured my (brass) sump plug and get a nominal OD of 0.8165" (thou) and 20.75mm is the metric conversion on the digital vernier which is closest to 13/16" (0.8125") of which there is no such sized thread but surfing the web I came across similar ask on rangerovers.net website from someone wanting to fit similar type valves;
I want to fit my 2 Classics with Fumoto oil drain valves, but I have been unable to find out definitively the size and thread of the sump plug - even tried calling Land Rover in the UK without success!
Anyone know the sump plug specs?Thanks RED[/b]
REPLIES AS FOLLOWS;
And the answer is - well I decided to buy a spare sump plug and give it to one of the engineers in our machine shop at work; the response is it is not a standard anything! 20.5mm or ~13/16 and 14TPI BSW thread, in other words, it is an orphan and none of the Fumoto oil drain plugs will fit. However, the engineer did have a good suggestion, drill out the standard sump plug and tap it so that one of the smaller size Fumoto valves can be screwed into the old plug.
ANOTHER REPLY;
Hi
I fitted drainvalves from
http://shop.difflock.com/range-rover-dr ... -p-42.html to my Classic and P38. They are very well made, and certainly with the Classic save a lot of mess.
Regards
Mik
RESPONSE;
Thanks Mik; I have ordered the plugs from the link you provided; will save me a lot of work in drilling and tapping sump plugs!
Hope this helps Thomas, you might have to email your intended supplier (Roelex) and confirm they do one for the Rover V8 or you may have to drill and tap a roelex one to suit if you want to stick with your selected brand and probably drill and tap to suit 7/8" UNF or 22mm as there seems to be enough metal on the sump thread to do this but would mean removing sump to do this which is probably not the extra work you want to do!
Regards,