Re: Update: Clay test and Measuring Valve MOP
Posted: Fri Oct 20, 2017 6:58 am
'The exhaust/outlet sprocket usually has the letters EX engraved on it. On your photo I can see IN scratched on the sprocket on the inlet side so that is correct. I cannot see EX scratched/engraved on the other sprocket.'
In my experience, only the inlet camshaft sprocket was engraved by Lotus. Latter day owners and engine builders may have scratched EX on that particular sprocket, for more clarity when reassembling.
'Oddly enough I do not know how to distinguish the inlet cam from the outlet/exhaust cam; someone else will have to describe that.'
As 2cams says, the camshafts are identical, OR WERE, WHEN THEY WERE NEW, so long as they both have no rings, 1 ring, or 2 rings where the sprocket fits. I say when they were new because when they were new, there was no wear on the lobes, but after thousands of miles, the lobes have worn individually but not identically with their respective bucket and therefore the camshafts should not be moved from their original location.
Leslie
In my experience, only the inlet camshaft sprocket was engraved by Lotus. Latter day owners and engine builders may have scratched EX on that particular sprocket, for more clarity when reassembling.
'Oddly enough I do not know how to distinguish the inlet cam from the outlet/exhaust cam; someone else will have to describe that.'
As 2cams says, the camshafts are identical, OR WERE, WHEN THEY WERE NEW, so long as they both have no rings, 1 ring, or 2 rings where the sprocket fits. I say when they were new because when they were new, there was no wear on the lobes, but after thousands of miles, the lobes have worn individually but not identically with their respective bucket and therefore the camshafts should not be moved from their original location.
Leslie