Re: Green White Cam
Posted: Mon Sep 13, 2010 5:13 pm
" I have noticed some numbers on the unmachined area next to the lobes. There is the number three followed by a dot then the number five. Under the dot is the number eleven. "
____ I don't know what that may mean but, I've seen the same on other camshafts from stock w-c 350s.
" Intake lift = 9.7mm
Exhaust lift = 8.28 "
____ These lobe-lift figures are (still) consistent with only a G&W-cam...
And the exhaust-lift is too low to be that of an (unworn) 'F1-cam' type cam-grind. _ So it seems that your particular G&W is the more useful (for a 350) 350Mk3-cam.
Even though it's not as wild as the F1-version, it's still not the best choice of cam for best overall-performance with stock exhaust or other restricted mufflers.
A stock/mufflered 350 with a White-cam will (very much) out-accelerate a 350 with the std.w-c 350-cam (even without muffler!), while below mid-range RPM ! _ And stay about even during high-range RPM (unless the G&W-cam equipped 350 is unmufflered).
__ So for anyone who appreciates the type of power that a single-cylinder provides, and expects to do street-legal riding,, the logical best-choice for a cam, would then be the 'White-cam' !
____ I'm confident that Graham has now done the measuring of his cam, as best as can be done with his measuring-tool. _ And the figures he has obtained are correct for an unworn 350Mk3/G&W-cam. - (Keep in mind that it seems the Ducati parts-books do not clarify which cam the G&W color-code actually belongs to but, top-sources [like John White] have always referred to the G&W-cam as being the very same camshaft as the '250F1-cam' ! )
__ Back before the '80s, I visited a number of DUCATI-shops (all east of the Miss.River), and never found anyone who had a Ducati parts-book which covered the pre-1968 wide-case models, but I was once told that such a parts-book existed. - (Supposedly Berliner had one and sent their own machine-copies of it to a few of their top-dealers.) _ If anyone still has that particular parts-book/copy, (I'd expect that DomiRacer should've HAD one!), it should tell what the color-codes of those unique-cams are !
Hopeful-Cheers,
-Bob
____ I don't know what that may mean but, I've seen the same on other camshafts from stock w-c 350s.
" Intake lift = 9.7mm
Exhaust lift = 8.28 "
____ These lobe-lift figures are (still) consistent with only a G&W-cam...
And the exhaust-lift is too low to be that of an (unworn) 'F1-cam' type cam-grind. _ So it seems that your particular G&W is the more useful (for a 350) 350Mk3-cam.
Even though it's not as wild as the F1-version, it's still not the best choice of cam for best overall-performance with stock exhaust or other restricted mufflers.
A stock/mufflered 350 with a White-cam will (very much) out-accelerate a 350 with the std.w-c 350-cam (even without muffler!), while below mid-range RPM ! _ And stay about even during high-range RPM (unless the G&W-cam equipped 350 is unmufflered).
__ So for anyone who appreciates the type of power that a single-cylinder provides, and expects to do street-legal riding,, the logical best-choice for a cam, would then be the 'White-cam' !
____ I'm confident that Graham has now done the measuring of his cam, as best as can be done with his measuring-tool. _ And the figures he has obtained are correct for an unworn 350Mk3/G&W-cam. - (Keep in mind that it seems the Ducati parts-books do not clarify which cam the G&W color-code actually belongs to but, top-sources [like John White] have always referred to the G&W-cam as being the very same camshaft as the '250F1-cam' ! )
__ Back before the '80s, I visited a number of DUCATI-shops (all east of the Miss.River), and never found anyone who had a Ducati parts-book which covered the pre-1968 wide-case models, but I was once told that such a parts-book existed. - (Supposedly Berliner had one and sent their own machine-copies of it to a few of their top-dealers.) _ If anyone still has that particular parts-book/copy, (I'd expect that DomiRacer should've HAD one!), it should tell what the color-codes of those unique-cams are !
Hopeful-Cheers,
-Bob