i have had a problem with the oem honda valve seals sealing especially on the US seal and the one supplied in the head sets. i have discussed this issue with one other person and a tech i work with at honda and we have seen similar situation with the new seals leaking. any input is welcome along with advice. supposebly the Japanese version of the seal works well but no 100% confirmation on this. This issue definatly needs to be addressed so that you will not be replacing valve seals in a new motor. thanks

 

I have used both. There are 2 part numbers. Some are aprox. a dollar a piece and the others are like 3 or 4 dollars each. I have used both types. However the last set I purchased were the cheaper ones, and yes one or two of those bastards is leaking.

 

37 experts or engine builder have viewed but no one has seen this problem or heard.

 

I noticed the same problem here as well. On three honda vehicles we had the same situation with the genuine honda (made in USA) valve stem seals. On two of the three vehicles, the honda valve stem seals were removed and replaced with an aftermarket valve seal made available from a local machine shop. The results gave way to a perfect operating engine with no oil consumption due to oil leaking past the valve stem seals and thus causing the annoying blue smoke coming out of the tailpipe. I know that when honda only manufactured the valve stem seals that came directly from Japan, this was never an issue.

US made (made by NOK) valve stem seal part numbers:
12210-PZ1-004
12211-PZ1-004

Japan made: (made by ARAI)
12210-PZ1-003
12211-PZ1-003

anyone else have this problem? This could be an indication that the US made valve stem seals are not as good as they should be. Something that should be addressed and thus save all engine builders time, money, and avoid improperly functioning vehicles.


Modified by se93 at 5:07 PM 12/3/2003

 

good info

i just did a head
and installed the US made ones that cost like 4 bucks a pop

hope they hold up ok

 

Valve seals are made to leak a little down the valve stem for lubeing. Otherwise it would be just raw metal to metal.

 

Honda doesnt manufacture these seals.I believe they are made by NOK..as they are marked,i tried both the felpro and the honda ones,they look exactly the same,they seem to work fine either way....If you have loose valve stem clearances,then the seals won't do you any good anyway.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by aeolus &raquo;</TD></TR><TR><TD CLASS="quote">Honda doesnt manufacture these seals.I believe they are made by NOK..as they are marked,i tried both the felpro and the honda ones,they look exactly the same,they seem to work fine either way....If you have loose valve stem clearances,then the seals won't do you any good anyway.</TD></TR></TABLE>

this is not a post of who manufactures what. this is also not a post about telling me the operations of an engine part. i am a tech and i under stand all of the variances of the proper sealing for a valve stem seal. this is not a clearance issue and never has been . this is about a faulty part from honda and i am trying to get responses from someone (preferably an engine builder) who has seen this sort of problem. this is a seriuos matter that needs some conformation.

by the way the Jap version is around 5 bucks and the USA version is around 60 cents.

 

I've changed valve stem seals twice on my current engine with the -004 stem seals. Both have never smoked.

The first set was on there for ~11k miles. Never smoked.

The second set has been on there for about 1k miles. Nothing.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by junbb1 &raquo;</TD></TR><TR><TD CLASS="quote">

this is not a post of who manufactures what. this is also not a post about telling me the operations of an engine part. i am a tech and i under stand all of the variances of the proper sealing for a valve stem seal. this is not a clearance issue and never has been . this is about a faulty part from honda and i am trying to get responses from someone (preferably an engine builder) who has seen this sort of problem. this is a seriuos matter that needs some conformation.

by the way the Jap version is around 5 bucks and the USA version is around 60 cents.</TD></TR></TABLE>

Ok,well sorry if i wasnt helpful,but i have built engines and helped other people build engines also,so i was giving you my experience and point of view.And i do know for a fact if the guides are too loose,the seals wont seal for very long.It is just info i found out on my own.But I don't have any experience with the arai seals yet. I guess i should have quoted a previous reply where it was mentioned that honda manufactured the seals.All i can say is try another set.And out of curiosity,what did you lubricate the valve stem guide with when you installed the new valves???

 

i just picked up a set of the NOK's hopefully they seal or i'll be pissed.

 

this is good info. i never new the differences in the part numbers til now
i replaced mine with the ones from japan. thats what came out, thats what went
back in. why be cheap on your head rebuild.(not aimed towards anyone, my opinion)
anyways, i had mine for around 4000 miles, and my car sits ALOT, and when i start
it no smoke at all. does not use any oil.

 

Bringing back an old topic:

I rebuilt my motor using the NOK seals and it is leaking like a bastard from hell when vtec kicks in. I talked to Len at Barance and he told me that you can't order the good valve seals anymore from Honda, SUX. But he did have just the exhaust side ARAI seals and NOK intake side so I bought another set and replaced all of them again. It still burns oil like a bitch. I did a compression test and it seemed OK, I need to do a leak down test to see if it could be coming from the rings, but I have yet to do that,

 

oem honda valve seals are awesome. i doubt there is anything better out there. Its not your seals, check your guides.

 

1 of my valve stem seals is leakin on my head. only got about 12 passes or so at the track on it. new ones comin. im not sure which brand they are. OEM is all i know.

 

Have any of you guys tried the STONE rebuild gaskets/seals?? They are supposedly manufactured by Ishino of Japan. We carry this brand and was planning on using it on my H22A rebuild. I know Ishino makes some gaskets for Honda as genuine Honda parts.