timing cover

[mits]

Hi does anyone know if the timing cover on a 950 engine is dished rather than flat on the surface that has mowog written on
thanks
Tony.

[philthehill]

The timing chain cover fitted to a BMC 948cc engine should have a flat front face but invariably the front face ends up lightly dished.
Is there any particular reason you ask?

[mits]

Hi yes as im just about to paint the engine up and wasnt sure if its supposed to be flat as its dished quite a lot why do they do this?
Tony.

[philthehill]

I can only put it down to the constant expansion and contraction of the metal and that there is no support either inside or outside to stop it doing so.
The later 'A' plus engine timing chain cover had a split level front face and therefore the front faces do not appear to distort or go concave
If it is of concern - knock the timing chain front cover flat again before painting.

[mits]

ok thanks for that never seen that happen before but its not a problem it dont look too bad.