I built a 998 imp years ago. Cam came from the rally car. Cooper s ignition. It would see 9000 rpm. Wish I still had it.
@spiroskatsikas
7 ай бұрын
The vaule cut out will not cause problems 😊
@peterwilkinson2998
7 ай бұрын
I have a tool post grinder.
@erichlausch9886
7 ай бұрын
👍👍👍👍👍
@damo1061
7 ай бұрын
Happy new year mate 🙏🍻
@jamesmckenzie295
7 ай бұрын
Why is the carter plate on back to front ?
@sidecarbod1441
7 ай бұрын
I must admit that I find it hard to imagine how the inlet valve can accelerate quicker off its seat than the cam wants it to accelerate, after all the valve would rather stay still if it had its way, the forces involved should act against valve float. The exhaust valve on the other hand might not keep up with the receding cam lobe and therefore it could have 'floated', this would mean that the exhaust valve is open more than the cam lobe intends it to be lifted, for this reason the piston to exhaust valve clearance needs to be more than the piston to inlet valve clearance. The way I've measure this sort of stuff is by fitting light weight valve springs, then with the cam fitted the engine can be set to say 20 BTDC on the exhaust stroke, you then push each valve down until it hits the piston and measure the travel, then turn the engine 5 degrees and repeat. I repeat the whole process until around 20 degrees ATDC (now on the induction stroke). This is with Rover V8 engines, which makes it a bit easier because the camshaft is down in the valley area, once there it does then not need to be removed again. In fact Rover used valve float as a crude rev limited, at around 5400 RPM the standard setup would start to have valve float, this would cause the hydraulic lifters to pump up, this in turn would cause the valves to be held off their seats until the lifters bled down, this in turn would cause a loss of power and a misfire signalling to the lead footed driver to change up a gear! ). Anyway in simple terms I can understand how the valve can float off the nose of the cam or the trailing edge of the lobe but not off the leading edge of the cam.
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