Hi, i am in the process of upgrading to twin dcoe Webber’s from the single Webber carb on my Robin Hood S7
I have bought a second hand inlet manifold that fits fine but the hose tail that screws into the bottom of the manifold for the coolant hose is missing, I assumed I could use the original out of the standard Sierra/cortina manifold but the threads are too big so I’m trying to find one that is the right size,
It’s a minefield trying to find one as the sizes are all so different, some say it’s a BSP fitting others say NPT.
All I know is that the hole in the manifold is approx 15mm inside diameter, the hose that fits onto the barbed hosetail is 16mm inside diameter and it needs to be a 90 degree elbow to clear the engine breather,
So does anyone know the correct size for the Webber manifold or have a link to somewhere I could buy one please ?
Any help would be greatly appreciated
Thanks
John