plenum water heater bolt thread size

[spitfire4v8]

Hoping someone (Simon that means you!) might know what the thread size is for the 4 bolts which hold the water heater plate onto the underside of the rover plenum .. I haven't got a plenum off a car to measure up but the spanner is a 3/8th hexagon i know that ..

anyone know the thread ? google's thrown me a curve ball ..

cheers.

[grahambell]

Sure it's 3/8" and not 10mm?

If 10mm then most probably M6 thread unless it's some oddball bolt.

[Zener]

Its 1/4 UNC (Simon that means you!)

[spitfire4v8]

I knew you'd have the answer! thanks!

[Zener]

spitfire4v8 said:

I knew you'd have the answer! thanks!

Ya welcome