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Author Topic: 1973 CB 750 Rebuild.  (Read 3541 times)

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Offline Grizzy

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Re: 1973 CB 750 Rebuild.
« Reply #25 on: January 21, 2018, 12:17:59 PM »
Could be, found set of cases on eBay under $100, looks like plan B
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Offline Grizzy

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Re: 1973 CB 750 Rebuild.
« Reply #26 on: January 27, 2018, 03:28:01 PM »
Got a set of cases for a cb750E on eBay from mrmonkeypaws. Weird name but excellent deal, just $85 with shipping. Cases look good, just need some cleaning and painting
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Offline Grizzy

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Re: 1973 CB 750 Rebuild.
« Reply #27 on: February 03, 2018, 02:14:02 PM »
Buying a bike that isn't running is risky, and it looks like I got bit.
Two broken rocker arms and 4 valves where the stems are mashed up enough they wouldn't slide out...had to grind down a bit with a dremel. Weirdest is that the exhaust valve stems have no seals, just seals on th intake. The valve seats look pretty good and I'm replacing the rocker arms, valves and seals hoping a lapping job will make all right again!
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Offline calj737

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Re: 1973 CB 750 Rebuild.
« Reply #28 on: February 03, 2018, 03:26:35 PM »
If your valves were mashed, I would anticipate needing new guides. And then recut the seats.
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'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline Grizzy

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Re: 1973 CB 750 Rebuild.
« Reply #29 on: February 03, 2018, 03:30:52 PM »
Your advice is sound and I may end up there after seeing how the new valves look
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Offline MauiK3

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Re: 1973 CB 750 Rebuild.
« Reply #30 on: February 03, 2018, 06:20:11 PM »
I have some K3 stuff available, cost would be little more than shipping.
Steve
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1973 CB 750 K3
10/72 build Z1 Kawasaki

Offline Grizzy

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Re: 1973 CB 750 Rebuild.
« Reply #31 on: February 04, 2018, 10:06:09 AM »
Any chance you have a camshaft? Those broken rockers have ruined the one in this bike
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Offline Grizzy

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Re: 1973 CB 750 Rebuild.
« Reply #32 on: February 04, 2018, 10:17:39 AM »
MauiK3,  Just saw your list on the For Sale forum, several items I would be interested in. I need to put a single list together, will contact you when I have that. Thanks!
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Offline Stev-o

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Re: 1973 CB 750 Rebuild.
« Reply #33 on: February 04, 2018, 01:08:08 PM »
I suggest having a qualified machinist inspect your head and make recommend exactly what work it needs.  This is not an area where you want to cut corners
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'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........
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