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Old 04-01-2009, 11:40 PM   #1
williaty
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Default "Cam Plugs" Reusable?

So I'm about to tear into my heads to swap cams. I was working from a parts list that turned out to be incomplete. The list was lacking the "cam plugs". These are apparently plastic/rubber cap/plug things that go on the rear end of the cam to create an oil seal at the back of the head. This is on a EJ253 if it matters.

If I manage to remove the existing ones from the current cams without damaging them, is it reasonable to re-use them?
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Old 04-01-2009, 11:59 PM   #2
Merp
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My service manual says you don't need to replace the cam plugs, but there is a seal underneath the plug that you should replace if removed, they mention that you should only remove said seal if necessary.
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Old 04-02-2009, 01:11 AM   #3
n2oiroc
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i dont see why not. just clean all the old silicone off and clean them up good. the silicone does all the sealing.
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Old 04-02-2009, 01:29 AM   #4
williaty
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Supposedly you're not supposed to put RTV on these things though.

Specifically, the only place these things are mentioned is on page ME(H4SO)-52 of the 2005 service manual. The entirety of the text is:
Quote:
4)Install the plug using ST.
ST 499587700 CAMSHAFT OIL SEAL INSTALLER
The only time RTV is mentioned is when re-installing the "cam cap" (metal frame that hold the cam in place and gives a mounting for the rocker assy) and that's over and done with a page before these cap things are mentioned.

Last edited by williaty; 04-02-2009 at 01:36 AM.
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Old 04-02-2009, 02:22 AM   #5
n2oiroc
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oh crap, i was thinking the half moon rubber plugs at the back of the heads. im not familiar with the 253, does it use a different setup? if its actual oil seals then get new ones.
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Old 04-13-2009, 08:11 PM   #6
jester409
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I am doing a 2.5L swap and noticed that my donor motor has the passenger side cam plug knocked in unevenly at least 1/8" on one side. I would like to pop it out and replace it with a new one but can't locate them anywhere online. I finally gave up and came to search NASIOC which brought up this thread.

Question #1: What is the part number for a replacement plug (engine is a 2005 EJ253 SOHC)?

Question #2: Will having this plug knocked too far in damage anything, assuming it doesn't leak of course.
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Old 04-13-2009, 08:21 PM   #7
williaty
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1) 807045040

2) From taking it apart, twice, if it's sealed and not rubbing against the cam, I can't think of anything it can hurt.

I'm not a professional, though, so you may not want to take my word on this one since I'm don't have a huge amount of engine building experience.
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Old 04-13-2009, 08:59 PM   #8
slowmike
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They get brittle when they get old and the the edges break off easily when you remove them. I install them with Honda Bond, works good. If they are not damaged it wouldn't hurt to reuse but, why chance a leak on a $5 part?
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