Inside a 998cc Hillman Imp engine

The engines origins  go back to just after the Second World Wars ending and the well known Coventry Climax 700cc fire pump engine,Rootes copied the basics but made it to an 875cc engine size,this engine is now 998cc sized.Some motor rebuilders also say the block is near identical to the Honda 1500cc block?

This engine was originally designed to peak around 5000 rpm,the later Sports version,6100 rpm,this engine has a camshaft that peaks around 7800 rpm but the engine will rev quite a lot higher when required.

One main bearing cap has been removed to allow access to the new timing chain,once refitted ,the oil pump can be fitted.

The oil pump is now in place,the set screw and three nuts over washers have had Loctite applied for security.