650(1981c)
1.360 Lobe 1.380
1.105 Base circle 1.105
0.255 Lift 0.275
650(1979std)
1.390 1.403
1.110 1.110
0.280 0.393
FIND MORE INFO ON STOCK LIFTS 550 AND 650!!!
650 Manual states
Intake lobe :1.4026-1.4089
Exhaust Lobe:1.3903-1.3966
Wear limit intake :1.40
wear limit exhaust :1.39
Does anyone out there have a 650(or even a 550) cam they can measure the base circle, as well as cam lobe height?
(basically the smallest and largest measurements)
thnx
l8r
Cam measurments anyone??
Re: Cam measurments anyone??
Here is what I measured at an old 63hp camshaft (probably Z-model) with a slide caliper rule from smallest and largest lobe dimensions:
intake 35.7mm
outlet 35.3mm
base circle 28.25mm
It more or less seems to fit what my manual says.
For the 50hp camshaft, the lobes are close to 33mm both. I could find and measure one, too, if it helps.
intake 35.7mm
outlet 35.3mm
base circle 28.25mm
It more or less seems to fit what my manual says.
For the 50hp camshaft, the lobes are close to 33mm both. I could find and measure one, too, if it helps.
Re: Cam measurments anyone??
I try to get the data by next week. but I don't think it is the one you have as I am quite sure the lobes are smaller and almost perfectly equal. In case it is not of the 550, I once read of a CB650 French version with an intermediate power (58hp?, I think it was at http://www.cb500four.com/interactif/phpBB2/index.php). Having a look at your little database, that may come out quite right. So if you don't get ahead maybe it's worth to track this trace.
Here is a picture I took some time ago. Maybe the position of the timing mark to the onset of the second lobe already gives a hint. The data above was measured at the right camshaft.
Here is a picture I took some time ago. Maybe the position of the timing mark to the onset of the second lobe already gives a hint. The data above was measured at the right camshaft.
Re: Cam measurments anyone??
Here the 50hp camshaft measurement:
lobes 33.1mm
base circle 28.1mm
Within the capabilities of my slide caliper rule and of myself , intake and outlet are equal.
lobes 33.1mm
base circle 28.1mm
Within the capabilities of my slide caliper rule and of myself , intake and outlet are equal.
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