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Old 02-15-2014, 02:30 PM   #18
hardtimes
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Join Date: May 2010
Location: South California
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Default Re: crab- rotor clearance to-cap termanal

Quote:
Originally Posted by Walt Dupont--Me. View Post
What if it's got .030 or .040 clearance, how do you know? Walt
Hey Walt,
I'm sure that everyone has considered this, but worth saying anyhow,eh.
IF the dizzy bushing/shaft clearance is moving/bad.. clearance is bound to be off..depending on how bad/much bush to shaft is..
That said, I run .025 to .026 gap in my four cylinder dizzy (with new bush), and always have, without any problem, i.e.- missing, arcing.
Of course, on my type setup, I can take cap off and make precise measurements (after putting on CVS .99c eyes).
If I couldn't see , as with crab/helmet, I'd set gap with unit off of engine by placing some matter (clay/wax/solder/whatever)on ends of rotor OR cap , spin it slowly...and keep at it until satisfied. And, yeah , I'd use .025 to .030 and be consistent at whatever gap I pick.
Note: obviously the points of contact MUST be clean to help prevent arcing.

Last edited by hardtimes; 02-15-2014 at 02:32 PM. Reason: speil chekc
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