Oldskoolrob
Active Member
Hey groovers - is it stamped on the block wether it's 3.5 or 3.9? I can't remember.....
As for state of Vic in Oz, you are allowed to up engine power by certain amounts before you need to get an engineering inspection - currently 20%. So if you went from a 10.5:1 CR 3.5 giving 158hp to a 3.9 (unknown CR?) giving 190hp you would be right on the edge - 158hp +20%=189.6hp. Dont know the hp figure for the other CR types - interested in the figure for 9.25:1.
I seriously doubt many inspectors would know off the top of their heads how to read Rover engine no codes. I plan to put a 3.9 (38d...) in mine later and all I will do is notify Vicroads of an engine no change, and show them the no if asked. Even if you had a 4.0 or 4.6 type, how would they get to see the cross bolting, or the unused bosses on a 3.9?
Any idea if there were camshaft changes between the different CR in the early engines? Would seem logical, with CR varying from 8.5 to 9.25 to 10.5.
I have only just seen your post; I use an MG-B overflow bottle that takes a ( pressure ) radiator cap that is mounted on the inner fender above radiator height; the radiator having a zero-pressure capTokyo - how did you get on with water pump location on a serp front cover in a P6B? Pump looks to be higher than a std P6B? I have eyes on a 3.9 interim, and it would be ideal if I could keep the serp front cover.
thanks