Quote:
Originally Posted by DWR
The definition of overlap depends upon the lift at which it is measured. There is more than 1 standard method. Diesels can have overlap that is negative degrees. So, are you saying that you have experimented with duration and lobe center separation or just advance and retard?...
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Yes, yu are right, I donīt understand first, sorry.
I have tried more lift + intake open earlier and shut down later + exhaust open earlier and shut down later. It was quite a long time ago, I donīt remember degrees or anything any more and the paper is certainly lost.
No benefit anyway.
Porting head gives more flow.
MB head flows a bit better as stock as BMW one lightly ported (+10%)