Triumphrat

lovecuba · 11-17-2012, 03:41 PM

It appears the inlet camshaft has been ground to standard spec, the exhaust has been 'built up' and ground to the same spec.
Does this make the exhaust cam perform better than it's original factory grind? Is it a slightly 'warmer' or indeed quite 'hotter' grind, performance wise?
Can access a dial gauge, and be shown how to use it and, have the settings from Mr Pete as per an earlier post.

Mr.Pete · 11-17-2012, 05:00 PM

I'd say quite hotter;most effective rpm = 4000 to 7000.
It would still go OK to 8000 rpm.
Norman Hyde descibes it as "full race exhaust cam".Otherwise known as "Spitfire cam".

Expect idle speed to be no less than 1100 rpm.Apart from the slightly faster idle,it will still run smooth.You just need more rpm before it really starts working.

lovecuba · 11-17-2012, 05:28 PM

Quote:

Originally Posted by Mr.Pete

I'd say quite hotter;most effective rpm = 4000 to 7000.
It would still go OK to 8000 rpm.
Norman Hyde descibes it as "full race exhaust cam".Otherwise known as "Spitfire cam".

Expect idle speed to be no less than 1100 rpm.Apart from the slightly faster idle,it will still run smooth.You just need more rpm before it really starts working.

Cheers for that Mate, much appreciated.