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Author Topic: Cams not getting oil  (Read 2119 times)

Offline Joseph New York

  • Posts: 91
Re: Cams not getting oil
« Reply #20 on: May 21, 2017, 21:20:20 »
if its been running with dry cams you are going to need at least another head and cams

the cam runs right on the aluminum head no oil film you have scrap

Ok wow I prob should have known that, thanks
CB(500/4|650|750|750/DOHC)
Norton Atlas
Suzuki Savage bobber

Offline Joseph New York

  • Posts: 91
Re: Cams not getting oil
« Reply #21 on: May 21, 2017, 21:44:37 »
if its been running with dry cams you are going to need at least another head and cams

the cam runs right on the aluminum head no oil film you have scrap
I went in the shop to inspect this. It's insane, went through every lobe and they all look perfect, one had a dark scar but not even the slightest groove or score. I'm going to go through it again when I get em off.
« Last Edit: May 21, 2017, 21:46:15 by Joseph New York »
CB(500/4|650|750|750/DOHC)
Norton Atlas
Suzuki Savage bobber

Offline datadavid

  • Posts: 1290
Re: Cams not getting oil
« Reply #22 on: May 22, 2017, 05:13:16 »
if its been running with dry cams you are going to need at least another head and cams

the cam runs right on the aluminum head no oil film you have scrap
Glad you mention that as well, i dont think he read it when i mentioned that

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Offline datadavid

  • Posts: 1290
Re: Cams not getting oil
« Reply #23 on: May 22, 2017, 05:13:39 »
Ok wow I prob should have known that, thanks
Yes i told you last week..😃

« Last Edit: May 22, 2017, 05:15:45 by datadavid »

Offline datadavid

  • Posts: 1290
Re: Cams not getting oil
« Reply #24 on: May 22, 2017, 05:18:19 »
I went in the shop to inspect this. It's insane, went through every lobe and they all look perfect, one had a dark scar but not even the slightest groove or score. I'm going to go through it again when I get em off.
Did you remove the cam caps? You need to check the bearing surfaces first. But if no blue lobes and no scored bearing surfaces, then guess what? You have oil pressure up there.

Offline Joseph New York

  • Posts: 91
Re: Cams not getting oil
« Reply #25 on: May 26, 2017, 00:24:56 »
Yes i told you last week..😃

Oops I quoted the wrong line here, did it twice. I meant I should have known the equation: 10 lbs per 1000 rpm hot :D
CB(500/4|650|750|750/DOHC)
Norton Atlas
Suzuki Savage bobber

Offline Joseph New York

  • Posts: 91
Re: Cams not getting oil
« Reply #26 on: May 26, 2017, 00:35:31 »
Did you remove the cam caps? You need to check the bearing surfaces first. But if no blue lobes and no scored bearing surfaces, then guess what? You have oil pressure up there.

I didn't, in fact I can't say for sure that I got a proper look at everything.

And your right, I'm totally open for the fact that the shop misdiagnosed everything. I rode her hard for a long time with little side effect and little to no wear.

The real test is when I get her home and and take her top off ;)
CB(500/4|650|750|750/DOHC)
Norton Atlas
Suzuki Savage bobber

Offline crazypj

  • Posts: 12892
  • Split personality, I fake being smart
Re: Cams not getting oil
« Reply #27 on: May 26, 2017, 15:36:18 »
Pull the sump off and check the pick up isn't blocked.
If motoir has been apart and silicon sealer used, you can almost guarantee it's blocked at least one feed hole. Worst case scenario is the outer rotor of oil pump broken.
Oh, pull oil filter and check the spring and washer are in place (and the pressure release valve in bolt isn't stuck open)
 The engine is about 212lbs, the shape makes it real awkward to move around and get out of frame. Couple of people have used carr engine hoists to lift it (I'm way too old and fragile to try lifting one nowadays  :( )
« Last Edit: May 26, 2017, 15:40:02 by crazypj »
'you can take my word for it or argue until you find out I'm right'
Best thing I ever overheard
"yep, PJ's my boss, he taught me everything I know, just didn't teach me everything he knows"
Brian Morgan, 1982

CB360's,  http://www.dotheton.com/forum/index.php?topic=11736.0
XS650,  http://www.dotheton.com/forum/index.php?topic=11922.0

Offline Joseph New York

  • Posts: 91
Re: Cams not getting oil
« Reply #28 on: May 27, 2017, 12:22:06 »
Pull the sump off and check the pick up isn't blocked.
If motoir has been apart and silicon sealer used, you can almost guarantee it's blocked at least one feed hole. Worst case scenario is the outer rotor of oil pump broken.
Oh, pull oil filter and check the spring and washer are in place (and the pressure release valve in bolt isn't stuck open)
 The engine is about 212lbs, the shape makes it real awkward to move around and get out of frame. Couple of people have used carr engine hoists to lift it (I'm way too old and fragile to try lifting one nowadays  :( )

Great, pointers to what I should do when I get the bike back is a help. 212lbs!! I'm young but built like a pencil, I'm not picking it up either. Sounds like a I'll be needing to call in on some favors.

What are some tests I should do while the bike is still in the frame, other than leak-down and compression, preferably in the oil category?

CB(500/4|650|750|750/DOHC)
Norton Atlas
Suzuki Savage bobber

Offline crazypj

  • Posts: 12892
  • Split personality, I fake being smart
Re: Cams not getting oil
« Reply #29 on: May 27, 2017, 15:32:44 »
There should be an oil gallery plug screwed into bottom of right side crankcase. you can fit a pressure gauge there and see what pressure you really have.
'you can take my word for it or argue until you find out I'm right'
Best thing I ever overheard
"yep, PJ's my boss, he taught me everything I know, just didn't teach me everything he knows"
Brian Morgan, 1982

CB360's,  http://www.dotheton.com/forum/index.php?topic=11736.0
XS650,  http://www.dotheton.com/forum/index.php?topic=11922.0