Repairing the main seal leak, Finally got to the first part of it. |
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Repairing the main seal leak, Finally got to the first part of it. |
mmichalik |
Nov 11 2024, 09:46 AM
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#1
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MikeM Group: Members Posts: 734 Joined: 27-January 16 From: Valley Center, CA Member No.: 19,600 Region Association: Southern California |
I was able to get some time this weekend, at the cost of all of the household chores, to pull the motor so I can start repairing the main seal leak.
I was a bit nervous about doing it for the first time but, It was relatively straight forward and much easier then I thought it would be. Hopefully I can get back to the job this weekend so we can button this thing up and I can start driving it again. Thanks to @ChrisFoley for the engine lift plate. Thing worked like a charm! Here are a couple pictures: Attached thumbnail(s) |
mmichalik |
Nov 11 2024, 09:50 AM
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#2
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MikeM Group: Members Posts: 734 Joined: 27-January 16 From: Valley Center, CA Member No.: 19,600 Region Association: Southern California |
Dropped the engine so I can fix the oil leak
Attached thumbnail(s) |
JeffBowlsby |
Nov 11 2024, 10:02 AM
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#3
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914 Wiring Harnesses Group: Members Posts: 8,759 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None |
While you are in ther you have to at least get a valve adjustment, and what else can you do that will save you time later?
;) |
mmichalik |
Nov 11 2024, 10:21 AM
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#4
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MikeM Group: Members Posts: 734 Joined: 27-January 16 From: Valley Center, CA Member No.: 19,600 Region Association: Southern California |
While you are in ther you have to at least get a valve adjustment, and what else can you do that will save you time later? (IMG:style_emoticons/default/wink.gif) Great suggestions. I will do just that. Thanks @JeffBowlsby |
rjames |
Nov 11 2024, 11:23 AM
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#5
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I'm made of metal Group: Members Posts: 4,146 Joined: 24-July 05 From: Shoreline, WA Member No.: 4,467 Region Association: Pacific Northwest |
I'd also do the oil cooler seals. Although, based on how clean everything looks, I'm' guessing you don't need them. (IMG:style_emoticons/default/smile.gif)
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JeffBowlsby |
Nov 11 2024, 02:07 PM
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#6
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914 Wiring Harnesses Group: Members Posts: 8,759 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None |
Unless you know they are recently changed, if it were me I would also replace the front & rear main seals, the front trans shaft seal and inspect the clutch disk and first/reverse gear assembly
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mmichalik |
Nov 11 2024, 02:56 PM
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#7
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MikeM Group: Members Posts: 734 Joined: 27-January 16 From: Valley Center, CA Member No.: 19,600 Region Association: Southern California |
The entire unit, from front to back, has probably less than 200 miles on it since the rebuild of the engine and transmission. Which I had done by people who definitely know what they are doing and is why it's so clean right now.
Checking the valves, while it's out is a good idea. The other pieces should be brand new. The rear main seal was not put in with a tool, just by hand and I think that's the culprit. Particularly since the hand that put it in was unskilled (read = Mine) when we put the clutch on and mated the transmission to the engine. I will eyeball everything that has been mentioned though, just to make sure. |
Jack Standz |
Nov 11 2024, 03:25 PM
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#8
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Member Group: Members Posts: 396 Joined: 15-November 19 From: Happy Place (& surrounding area) Member No.: 23,644 Region Association: None |
When you put the new seal in, this tool helps get things lined-up properly:
https://gowesty.com/products/rear-main-flyw...=41426745753765 And, you should check the clutch disk. If it's contaminated with oil, best to replace it now. |
mmichalik |
Nov 11 2024, 03:34 PM
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#9
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MikeM Group: Members Posts: 734 Joined: 27-January 16 From: Valley Center, CA Member No.: 19,600 Region Association: Southern California |
When you put the new seal in, this tool helps get things lined-up properly: https://gowesty.com/products/rear-main-flyw...=41426745753765 And, you should check the clutch disk. If it's contaminated with oil, best to replace it now. That's the one I purchased already. Glad to see I grabbed the right thing. I've ordered a new clutch disk as well. If the amount of oil that spilled out is any indication, it will probably need to be replaced and if not, I'm building a new engine that I can use it on. |
930cabman |
Nov 14 2024, 05:58 AM
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#10
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Advanced Member Group: Members Posts: 3,722 Joined: 12-November 20 From: Buffalo Member No.: 24,877 Region Association: North East States |
Might check the trans input shaft also for leakage
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Superhawk996 |
Nov 14 2024, 08:13 AM
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#11
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914 Guru Group: Members Posts: 6,544 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch |
(IMG:style_emoticons/default/smilie_pokal.gif) on knowing how to drop the engine / trans / exhaust / muffler as an assembly. This is the easiest way to do it in my opinion.
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mmichalik |
Nov 14 2024, 11:33 AM
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#12
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MikeM Group: Members Posts: 734 Joined: 27-January 16 From: Valley Center, CA Member No.: 19,600 Region Association: Southern California |
(IMG:style_emoticons/default/smilie_pokal.gif) on knowing how to drop the engine / trans / exhaust / muffler as an assembly. This is the easiest way to do it in my opinion. Thanks! It just seemed like the most logical way to do it. Now, I just have to wait for parts to arrive. Hopefully I will be able pull things apart and get ready for the new parts this weekend. |
technicalninja |
Nov 14 2024, 12:29 PM
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#13
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Advanced Member Group: Members Posts: 2,026 Joined: 31-January 23 From: Granbury Texas Member No.: 27,135 Region Association: Southwest Region |
Raby does case mods to help the RMS housing drain. He puts a little V in the parting line at the bottom.
The original set up has a drain as well. It's just higher than it needs to be. Make SURE the original drain path is OPEN or you will be doing this again! Best "practice" is a large drain on the bottom and a smaller air vent on the top. The OEM has only the drain about halfway up the recess. |
bkrantz |
Nov 14 2024, 08:15 PM
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#14
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914 Guru Group: Members Posts: 8,155 Joined: 3-August 19 From: SW Colorado Member No.: 23,343 Region Association: Rocky Mountains |
Welcome to the drop the engine club. If you do it 2 or 3 more times, it will become a normal reflex for just about any reason.
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porschetub |
Nov 14 2024, 09:12 PM
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#15
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Advanced Member Group: Members Posts: 4,739 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
(IMG:style_emoticons/default/smilie_pokal.gif) on knowing how to drop the engine / trans / exhaust / muffler as an assembly. This is the easiest way to do it in my opinion. Thanks! It just seemed like the most logical way to do it. Now, I just have to wait for parts to arrive. Hopefully I will be able pull things apart and get ready for the new parts this weekend. Never used seal installer but up to you if not confident on a replacement fitting ,IMO its more important what seal you use , I won't touch anything that isn't a known brand such as Kaco ,Elring etc,I avoid Victor Reinz as found a poor fit in my 911 motor case to the point I have no trust now, they do make great gaskets however. A good lick of motor oil on the crank and seal lip and a small bit on the OD of the seal helps it go in better you will be fine . |
mmichalik |
Nov 15 2024, 09:18 AM
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#16
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MikeM Group: Members Posts: 734 Joined: 27-January 16 From: Valley Center, CA Member No.: 19,600 Region Association: Southern California |
(IMG:style_emoticons/default/smilie_pokal.gif) on knowing how to drop the engine / trans / exhaust / muffler as an assembly. This is the easiest way to do it in my opinion. Thanks! It just seemed like the most logical way to do it. Now, I just have to wait for parts to arrive. Hopefully I will be able pull things apart and get ready for the new parts this weekend. Never used seal installer but up to you if not confident on a replacement fitting ,IMO its more important what seal you use , I won't touch anything that isn't a known brand such as Kaco ,Elring etc,I avoid Victor Reinz as found a poor fit in my 911 motor case to the point I have no trust now, they do make great gaskets however. A good lick of motor oil on the crank and seal lip and a small bit on the OD of the seal helps it go in better you will be fine . I have the Elring seal for this job. The one I had in there was from GoWesty but like I said, I'm sure we damaged it putting it in. Hopefully, it's "2nd time is a charm" on this (IMG:style_emoticons/default/smile.gif) |
Superhawk996 |
Nov 15 2024, 11:14 AM
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#17
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914 Guru Group: Members Posts: 6,544 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch |
Pay close attention to the flywheel sealing surface. If you have a groove there - it will never seal properly regardless of what seal you use.
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930cabman |
Nov 15 2024, 01:40 PM
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#18
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Advanced Member Group: Members Posts: 3,722 Joined: 12-November 20 From: Buffalo Member No.: 24,877 Region Association: North East States |
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mmichalik |
Dec 1 2024, 01:48 PM
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#19
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MikeM Group: Members Posts: 734 Joined: 27-January 16 From: Valley Center, CA Member No.: 19,600 Region Association: Southern California |
Pay close attention to the flywheel sealing surface. If you have a groove there - it will never seal properly regardless of what seal you use. As it turned out, the sealing surface on the flywheel was marked pretty badly. Not sure if it was a casting problem (because it kind of looks like that) or if it was rust but, it was definitely deep. I ended up ordering a new one from AA Performance and grabbed a couple of other bits while I was doing that. Hopefully they will all be here by Friday so we can put it back together and get it back in the car. I wanna drive it! Attached thumbnail(s) |
Ishley |
Dec 1 2024, 01:59 PM
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#20
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Member Group: Members Posts: 168 Joined: 4-October 21 From: Clarendon Hills Il Member No.: 25,957 Region Association: Upper MidWest |
Check that new flywheel carefully. I got the wrong one from AA and it took me a bit to figure it out. They fixed it but an extra week of delays.
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