Previous Thread
Next Thread
Print Thread
Cam bearing- would you run it? #1785408
03/22/15 01:17 AM
03/22/15 01:17 AM
Joined: Mar 2013
Posts: 571
Spring Hill Fl
65Fury440 Offline OP
mopar
65Fury440  Offline OP
mopar

Joined: Mar 2013
Posts: 571
Spring Hill Fl
What do you guys think?

Re: Cam bearing- would you run it? [Re: 65Fury440] #1785409
03/22/15 02:50 AM
03/22/15 02:50 AM
Joined: Oct 2011
Posts: 290
Dayton, WA
wesgtx440 Offline
enthusiast
wesgtx440  Offline
enthusiast

Joined: Oct 2011
Posts: 290
Dayton, WA
Sure looks like it needs replaced to me.

Re: Cam bearing- would you run it? [Re: 65Fury440] #1785410
03/22/15 03:02 AM
03/22/15 03:02 AM
Joined: Aug 2005
Posts: 11,543
chicagoland,usa
B
buildanother Offline
I Live Here
buildanother  Offline
I Live Here
B

Joined: Aug 2005
Posts: 11,543
chicagoland,usa
If the cam turns nice by hand, you can run it. I've seen ugly cam bearings out there.

Re: Cam bearing- would you run it? [Re: buildanother] #1785411
03/22/15 03:11 AM
03/22/15 03:11 AM
Joined: Jul 2003
Posts: 3,378
Rancho Cordova, CA
Exit1965 Offline
master
Exit1965  Offline
master

Joined: Jul 2003
Posts: 3,378
Rancho Cordova, CA
Quote:

If the cam turns nice by hand, you can run it. I've seen ugly cam bearings out there.




I'd say that too. I have run ugly bearings.

Now, if you are taking the block to the machine shop, sure. If it's together and this is the only concern with the cam bearing, it's not really a concern in my experience.

Re: Cam bearing- would you run it? [Re: Exit1965] #1785412
03/22/15 11:56 AM
03/22/15 11:56 AM
Joined: Sep 2007
Posts: 14,889
up yours
Supercuda Offline
About to go away
Supercuda  Offline
About to go away

Joined: Sep 2007
Posts: 14,889
up yours
Remember cams run at half the engine rpm.

That said, if the block is out and stripped down I'd just replace it since it won;t get easier or cheaper than right now.


They say there are no such thing as a stupid question.
They say there is always the exception that proves the rule.
Don't be the exception.
Re: Cam bearing- would you run it? [Re: Exit1965] #1785413
03/22/15 11:58 AM
03/22/15 11:58 AM
Joined: Feb 2003
Posts: 2,069
Renton, WA
G
GreenBlurr Offline
super gas
GreenBlurr  Offline
super gas
G

Joined: Feb 2003
Posts: 2,069
Renton, WA
Yep that is more than good to go. factory or rebuilt engines can get that kind of leading-edge damage from cam install alone....much less form wear. And the facing surface of the bearing is evenly worn. One should only assume you are to be running a high-volume oil pump after whatever work you do to the engine if you were already. And to of course be running Valvoline 4-stroke ATV engine oil afterwards as well as that is the only one with zinc in it to properly lubricate a flat-tappet cam and lifters, etc.

Re: Cam bearing- would you run it? [Re: GreenBlurr] #1785414
03/22/15 04:11 PM
03/22/15 04:11 PM
Joined: Mar 2013
Posts: 571
Spring Hill Fl
65Fury440 Offline OP
mopar
65Fury440  Offline OP
mopar

Joined: Mar 2013
Posts: 571
Spring Hill Fl
Hello and thanks for the replies.

This bearing is supposed to be new, it just looked pretty scrubbed to me. All the other bearings you can tell are new. This one looked suspect though. The PO slid a couple cams in and out and maybe thats where the wear is from. A brand new CC camshaft turns freely, so I guess I'll leave it alone.

I plan on using a high volume oil pump, I was not aware ATV oil had high zinc content. I usually use Valvoline synthetic racing oil and zinc additive, but man, it's pricy. I think the last oil change I did on my 440 with a premium filter was right around $100.00

Re: Cam bearing- would you run it? [Re: GreenBlurr] #1785415
03/22/15 11:21 PM
03/22/15 11:21 PM
Joined: Jun 2004
Posts: 3,319
Chicago Burbs
sthemi Offline
master
sthemi  Offline
master

Joined: Jun 2004
Posts: 3,319
Chicago Burbs
That will be fine, I have run much worse with no problems. Simply "fitting" a new bearing to the block can look much worse than yours.

Re: Cam bearing- would you run it? [Re: 65Fury440] #1785416
03/23/15 01:52 AM
03/23/15 01:52 AM
Joined: Jan 2003
Posts: 75,023
U.S.S.A.
JohnRR Offline
I Win
JohnRR  Offline
I Win

Joined: Jan 2003
Posts: 75,023
U.S.S.A.
Quote:


I usually use Valvoline synthetic racing oil and zinc additive, but man, it's pricy. I think the last oil change I did on my 440 with a premium filter was right around $100.00




Use the non synthetic and you'll not need the additive , and it's cheaper. Atv oil will have a different additive package .







Powered by UBB.threads™ PHP Forum Software 7.7.1