Valve position measurements

Today did a whole lot of measurements, close to 400, measuring the position of the exhaust and inlet valve against the crank shaft angle.

So will start entering all the data in a spread sheet, and do some graph magic…

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Above you see the overlap measured at a 6 thou opening. It measures about 30 deg, where as normally its about 60 deg. So it looks like the exhaust can indeed be delayed quite a bit….

Lets wait for the comments from the CAM specialist and then decide how we are going to make adjustments  🙂

Just looking at these  two graphs, we (Warren and me) have the feeling we can delay the exhaust valve by quite a bit, resulting in loosing less exhaust gas that is suppose to push the piston down.

And if you are interested here is the spreadsheet with all the measurements and graphs :xxxxx

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