 Seized No one main bearing, But also found this |
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| jeffdon |
 Jul 14 2013, 12:12 PM
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Senior Member  Group: Members Posts: 1,094 Joined: 24-October 06 From: oakland, ca Member No.: 7,087 Region Association: None  |
The thrust bearing on the cam shaft lost one of its flanges? WTF? How does this happen? Anyone seen this? Maybe some extra metal from the failure got into my main bearing?
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| r_towle |
Jul 15 2013, 01:36 PM
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#2
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Custom Member Group: Members Posts: 24,588 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States 
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take a picture of the end of the camshaft...the bolt heads.
and a picture of the back of the oil pump . please rich |
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| jeffdon |
Jul 15 2013, 01:48 PM
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#3
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Senior Member Group: Members Posts: 1,094 Joined: 24-October 06 From: oakland, ca Member No.: 7,087 Region Association: None |
QUOTE(r_towle @ Jul 15 2013, 12:36 PM)  take a picture of the end of the camshaft...the bolt heads. and a picture of the back of the oil pump . please rich Slightly shows on the bolts, the pump took the worst of it.   |
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| worn |
Jul 16 2013, 02:27 PM
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#4
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can't remember Group: Members Posts: 3,162 Joined: 3-June 11 From: Madison, WI Member No.: 13,152 Region Association: Upper MidWest
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QUOTE(jeffdon @ Jul 15 2013, 11:48 AM) QUOTE(r_towle @ Jul 15 2013, 12:36 PM) take a picture of the end of the camshaft...the bolt heads. and a picture of the back of the oil pump . please rich Slightly shows on the bolts, the pump took the worst of it. When you use a type 1 pump not only will the tang be an issue, the body of the pump will need some means of spacing so the outlet and inlet holes line up with the galleries in the case. Like a spacer between the case and pump. I think I made one at 0.080 thick, but it might have been more. The cam bolts hitting the pump are an issue as well. I still am having trouble understanding the 180 degree bit affecting the tang clearance. From what I am seeing it seems like interference with the cam stressed and broke the thrust bearing and ruined the soft aluminum gear teeth, and alignment issues starved the rest of the motor for oil. Sound like a reasonable scenario? (IMG:style_emoticons/default/pinch.gif) (IMG:style_emoticons/default/icon8.gif) I agree that having a qualified air cooled machinist looking at the case is worth the trouble. |
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Posts in this topic
jeffdon Seized No one main bearing Jul 14 2013, 12:12 PM
OCD Performance
The thrust bearing on the cam shaft lost one of i... Jul 14 2013, 01:21 PM
jeffdon
The thrust bearing on the cam shaft lost one of ... Jul 14 2013, 02:09 PM OCD Performance In all my years of working on Type 2, 411, 412 and... Jul 14 2013, 05:44 PM Cap'n Krusty I'd sure take a careful look at the condition ... Jul 14 2013, 06:18 PM r_towle After seeing both, if this is the same motor with ... Jul 14 2013, 06:56 PM jeffdon
After seeing both, if this is the same motor with... Jul 14 2013, 07:17 PM Mark Henry
After seeing both, if this is the same motor wit... Jul 14 2013, 07:58 PM jeffdon
[quote name='jeffdon' post='1895163' date='Jul 14... Jul 14 2013, 08:05 PM OCD Performance
After seeing both, if this is the same motor wit... Jul 14 2013, 08:16 PM jeffdon
[quote name='jeffdon' post='1895163' date='Jul 14... Jul 14 2013, 08:22 PM OCD Performance Yup a whole new case. Much better than half a case... Jul 14 2013, 08:46 PM jeffdon
Yup a whole new case. Much better than half a cas... Jul 14 2013, 09:10 PM OCD Performance did the cam shaft come in contact with the block w... Jul 14 2013, 09:24 PM jeffdon
did the cam shaft come in contact with the block ... Jul 15 2013, 08:08 AM Cap'n Krusty Wait a minute. You snapped the cam because the oi... Jul 15 2013, 09:05 AM jeffdon
Wait a minute. You snapped the cam because the o... Jul 15 2013, 09:51 AM Mark Henry
Wait a minute. You snapped the cam because the o... Jul 15 2013, 11:10 AM jeffdon
Wait a minute. You snapped the cam because the ... Jul 15 2013, 11:38 AM Mark Henry
[quote name='Mark Henry' post='1895434' date='Jul... Jul 15 2013, 11:49 AM jeffdon
[quote name='jeffdon' post='1895445' date='Jul 15... Jul 15 2013, 11:56 AM Mark Henry
Cam bolt to pump drive was fine. I stand correc... Jul 15 2013, 01:09 PM jeffdon
[quote name='jeffdon' post='1895451' date='Jul 15... Jul 15 2013, 01:13 PM Mark Henry
[quote name='jeffdon' post='1895451' date='Jul 1... Jul 15 2013, 01:31 PM DBCooper You posted while I was typing... and answered my q... Jul 15 2013, 09:58 AM jeffdon More forensics. Oil pump cover, showing wear, an... Jul 15 2013, 10:24 AM Java2570 A lot of folks say to use the stock Type 1 steel c... Jul 15 2013, 12:43 PM jeffdon
A lot of folks say to use the stock Type 1 steel ... Jul 15 2013, 12:49 PM 76-914
[quote name='r_towle' post='1895501' date='Jul 15... Jul 24 2013, 03:57 PM Cap'n Krusty
[quote name='jeffdon' post='1895508' date='Jul 15... Jul 24 2013, 05:06 PM r_towle
[quote name='jeffdon' post='1895508' date='Jul 1... Jul 25 2013, 07:14 PM zig-n-zag Gene Berg manufactures Cast Iron oil pump covers. Jul 15 2013, 02:27 PM jeffdon
Gene Berg manufactures Cast Iron oil pump covers.... Jul 15 2013, 02:29 PM Cap'n Krusty I guess I wasn't clear, coupled with misunders... Jul 16 2013, 02:36 PM Mark Henry
I guess I wasn't clear, coupled with misunder... Jul 16 2013, 02:54 PM jeffdon
I guess I wasn't clear, coupled with misunder... Jul 24 2013, 03:43 PM jeffdon
I guess I wasn't clear, coupled with misunder... Jul 24 2013, 03:43 PM McMark Your pump and your cam gear need modification/clea... Jul 16 2013, 03:12 PM r_towle
Your pump and your cam gear need modification/cle... Jul 16 2013, 03:29 PM Jake Raby Failed cam bearings in this manner are somewhat no... Jul 16 2013, 07:04 PM r_towle
Failed cam bearings in this manner are somewhat n... Jul 16 2013, 07:45 PM Jake Raby
Failed cam bearings in this manner are somewhat ... Jul 24 2013, 07:09 PM jeffdon
[quote name='r_towle' post='1896094' date='Jul 16... Jul 25 2013, 08:19 AM Java2570 When the first cam got damaged by the oil pump, di... Jul 16 2013, 08:10 PM jeffdon
When the first cam got damaged by the oil pump, d... Jul 25 2013, 09:19 AM jeffdon Well, I got offered a 1.7 case for 50 bucks. Got ... Jul 24 2013, 03:41 PM jeffdon Man, thats a bad one.
Well, its allegedly been ch... Jul 24 2013, 04:27 PM Jake Raby Any loss of thrust control can lead to this. The f... Jul 25 2013, 06:45 PM |
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