What thread type is the oil pressure boss on an RRV engine? ive seen reference that its NPT.
Just want to make sure before i order a hose to mount the DD2 sender which is BSP.

cheers

I dont think it is NPT, 1/8th BSPT rings a bell but its a long time since I had to order one. Its likely to actually be a Japanese tapered thread which are fully interchangeable with BSPT, as discussed here hence why I think BSPT is what you need, whereas NPT isnt interchangeable with either, as mentioned in the "North American" section of the above website.

[Edited on 1/5/06 by ChrisGamlin]

Cheers Chris,

Just found this thread too which seems about right
http://locostbuilders.co.uk/viewthread.php?tid=42629

Whilst we're on this topic, what range should I get for a Blade oil pressure gauge?

ie. what do they generally run at?

Mine used to run at about 5bar @ 6k rpm when hot, and about 2/3bar hot idle, so probably 0-8bar at least

Okey, ta.