08-10-2018, 11:12 PM
Manual for 1600cc ohv Rootes engine gives tolerance of 44 +/- 1 cc but may not be within same head.
Any old engine with c.i valve seats is sure to have at lest 1mm variation in valve height, say.5cc. it is a pity to deliberately sink valves.
On th old site I was referred to some meaurements of Seven heads. Sample of 4 varied .3 to .7 cc within each..
Seems .1 of a cr could be reasonable.
Any old engine with c.i valve seats is sure to have at lest 1mm variation in valve height, say.5cc. it is a pity to deliberately sink valves.
On th old site I was referred to some meaurements of Seven heads. Sample of 4 varied .3 to .7 cc within each..
Seems .1 of a cr could be reasonable.