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pat in Santa Cruz · 02-19-2015, 12:23 AM

Torque the crankshaft main caps. Don't use the OD of the cam gear flange as it is not an accurately machined surface. Just behind the cam gear threads is a 1" diameter area this is a good spot to measure across. You should be able to get a measurement between there and the crank gear press
fit diameter. If you know someone with a GOOD micrometer, that would be the best way to measure. Subtract the radius of each shaft to get the ctr to ctr distance. On Dan Mc Eachern's gears, a rule of thumb is that for each .001 difference in center distance, the back lash will increase or decrease about .0005. If you are using Dan's gears, he will happily explain it.
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02-19-2015, 12:23 AM	#2
pat in Santa Cruz Senior Member Join Date: May 2010 Location: santa cruz, calif Posts: 2,011	Re: measuring crank to cam distance Torque the crankshaft main caps. Don't use the OD of the cam gear flange as it is not an accurately machined surface. Just behind the cam gear threads is a 1" diameter area this is a good spot to measure across. You should be able to get a measurement between there and the crank gear press fit diameter. If you know someone with a GOOD micrometer, that would be the best way to measure. Subtract the radius of each shaft to get the ctr to ctr distance. On Dan Mc Eachern's gears, a rule of thumb is that for each .001 difference in center distance, the back lash will increase or decrease about .0005. If you are using Dan's gears, he will happily explain it. .