25-09-2017, 02:38 PM
(23-09-2017, 04:57 PM)Austin in the Shed Wrote: I'd agree with Ian,the only way to check a modified cam is to set it up in an engine, (Timing disk and drop clock on the valves).even then how it is likely to perform is another matter.I have a box full of them ,some have been fitted and quickly taken out again ( Done by well known regrinders).Most have too much duration to give any power low down,and one brand new one £330 absolutely useless.
I personally prefer a good standard cam with reprofiled followers the best compromise for power and torque for a road engine.There is also an advantage of being able to up the compression ratio a bit.
This seems good advice though the Jack French cam I have in my special has a bit ground off the bases and works well in conjunction with JF cam followers which are gently profiled i.e. not over flattened.
( but remember to shorten the guides) This combination gives good torque at low revs which is important in a road car.
It occurs to me that we have an advantage these days with strong cranks available and electronic ignition. Given a good carb ( I have an inch and quarter SU using a no 6 needle) your road car should be a lot of fun to drive.
Charles