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April 7th, 2018, 02:11 PM   #571
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It will fit Doc C, you have all the expertise to make it so!
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April 15th, 2018, 01:36 AM   #572
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Now the crank case goes to machining. We will make a "seat" for the cb housing in the crank case. That will secure the position of the cb housing, reducing the amount of machining after the welding. I will have to make a new front engine mount as well, so CrMo tubes and a sheet has been purchased.



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April 15th, 2018, 01:43 AM   #573
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Shouldn't take long with a big grinder!

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April 15th, 2018, 11:47 AM   #574
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Is that an engine breather in the starter motor housing? Is it extra or instead off the head?
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April 15th, 2018, 08:22 PM   #575
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Originally Posted by canolman View Post
Is that an engine breather in the starter motor housing? Is it extra or instead off the head?
Very perceptive and correct! It is extra. With higher combustion chamber pressure, the "blow-by" gets higher and will carry oil if the speed of the air is high. So I doubled the ventilation area, reduced the speed to 50% and Voila! No oil coming out of the engine!

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April 19th, 2018, 06:38 AM   #576
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Gotta admit, its nice having the right tools at hand to work with !
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April 19th, 2018, 09:26 AM   #577
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Nice work Doc, would an extra breather out through the clutch cover work or is that too low? I like the idea of extra breathing but I'm very fond of my electric start!
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April 21st, 2018, 02:04 AM   #578
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Originally Posted by canolman View Post
Nice work Doc, would an extra breather out through the clutch cover work or is that too low? I like the idea of extra breathing but I'm very fond of my electric start!
Wouldn't it be possible to use the oil filler hole as an extra ventilation?
Just make sure to avoid direct oil spray on the ventilation outlet from inside the Engine!
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