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Old 03-15-2020   #1
90zr1blknred
 
Join Date: Mar 2019
Location: Colorado - Denver
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Default Pilot bearing knocked out my engine plug

Help I have a 90 zr1 I was replacing the pilot bearing on and I knocked out the engine plug behind it. Any tips on how deep to set my new plug since I don't have a reference now. And tips or tricks to set it right. Thanks everyone.
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Old 03-15-2020   #2
Ccmano
 
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Default Re: Pilot bearing knocked out my engine plug

The search feature for this forum is your friend. It’s what makes the big difference between a forum like this and Facebook. The later being very difficult to search.
The following thread should help. Good luck and don’t worry, this stuff happens to all of us.
H

http://www.zr1.net/forum/showthread....ght=Crankshaft
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Old 03-15-2020   #3
90zr1blknred
 
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Default Re: Pilot bearing knocked out my engine plug

Thank you so much
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Old 03-15-2020   #4
tf95ZR1
 
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Default Re: Pilot bearing knocked out my engine plug

By "I knocked out the engine plug behind it" do you mean
pushed the rear engine seal into the engine? Can that happen?
That would be no bueno.
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Old 03-16-2020   #5
90zr1blknred
 
Join Date: Mar 2019
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Default Re: Pilot bearing knocked out my engine plug

Yes I popped the plug into the motor and need to install a new plug after I tear the entire clutch and flywheel out again. Ugh.
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Old 03-16-2020   #6
Paul Workman
 
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Default Re: Pilot bearing knocked out my engine plug

Quote:
Originally Posted by tf95ZR1 View Post
By "I knocked out the engine plug behind it" do you mean
pushed the rear engine seal into the engine? Can that happen?
That would be no bueno.
Yeah...pushing it through...is different than pulling it out. It happens sometimes. But, I don't recall what (perhaps it was Marc H) may have said about it. Is it a "biggie"?? IDK either.

I'll camp on this one....
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Old 03-16-2020   #7
90zr1blknred
 
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Default Re: Pilot bearing knocked out my engine plug

No big deal. It drops into the oil pan and you put in a new one. I’m told it will be ok if I set the new one correctly. More worried about not screwing that up and what the best depth is to put it back in since I have no reference as to where it was originally. Ugh
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Old 03-17-2020   #8
Jagdpanzer
 
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Default Re: Pilot bearing knocked out my engine plug

The rear crankshaft cup plug seals the lube oil bore in rear main journal. There is another pressed in cup plug located forward of it to seal the other end of the bore.
Image1584498084.240205.jpg
The dislodged cup plug should be fished out first before installing a new plug. Be sure to thoroughly clean the rear cup plug sealing area with suitable solvent and install using Loctite 620 and J38837 rear cup plug installation tool according to FSM instructions.


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Old 03-18-2020   #9
Jagdpanzer
 
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Default Re: Pilot bearing knocked out my engine plug

Sorry, can’t understand your question.


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Old 03-18-2020   #10
90zr1blknred
 
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Default Re: Pilot bearing knocked out my engine plug

Do you have any thoughts on how to fish this out given that it was a tight seal engine plug that was pushed in. I fear it won’t come out but Haibecks thought was that it would just drop into the pan and wouldn’t be an issue. I appreciate the different thoughts here as I’m not certain what the effects could be if I can’t get it out.
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