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Old 01-05-2021, 02:46 PM #1
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Best Valve Cover Gaskets 3.4L?

Hi. Haven't posted in a while. I did a search but nothing turned up to my question about the best valve cover gaskets for the 3.4L V6.

Mine are leaking on an reman engine with just 5k miles. Needless to say I'm not happy about having to go back into the engine with so few miles on a basically new engine.

Since I have to though I'd like to use the best quality gaskets available so I hopefully don't need to do it for at least 100k miles.

An independent mechanic says he has the best luck with neoprene valve cover gaskets. Does anyone make these for the T4R 3rd gen.
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Old 01-05-2021, 03:19 PM #2
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Talking

I've used oem and it's been solid for over 100k miles. Some have used felpro and have been fine.
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Old 01-05-2021, 03:50 PM #3
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I used Felpro with NAPA o-rings that go on the bolt and it has been fine ever since. I would use OEM if you want longevity.
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Old 01-05-2021, 03:55 PM #4
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I've used oem and it's been solid for over 100k miles. Some have used felpro and have been fine.
Thank you. I'll use that info to buy the next set.
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Old 01-05-2021, 04:05 PM #5
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I've used both felpro and OEM, OEM seems a lot softer and works very well. Since its new you might get away with reusing the washers, and maybe even the spark plug tube seals if there is no oil in the tubes, that's a big maybe, I would remove and reseal the half moons and even the Cam plugs just to be sure, you will want to use a oil specific sealant for the half moons insuring they are positioned flush and where the VC gaskets goes over the contours of the cam shaft bearing caps.
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Old 01-05-2021, 04:46 PM #6
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I also plan to do this.. currently at 270k miles and its leaking and messy all over inside... I plan to power pressure wash all the engine oil parts and then do the valve gasket job, tune up... I am going OEM parts... I plan to follow this thread posted here on this forum...its very detailed and has all the oem part ##.. and also follow Timmy toolman youtube.

Replacing Valve Cover Gaskets - A True Write Up - **PICTURES**

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Old 01-05-2021, 05:40 PM #7
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Please use OEM and TOYOTA FIPG. Also, apply a small film of FIPG to the lower end of the cylinder head/valve cover mating surface.
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Old 01-05-2021, 05:48 PM #8
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Oem with everything.. McGeorge toyota parts is one of the less expensive sites.
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Old 01-05-2021, 06:05 PM #9
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That FIPG red is really expensive, it was grey sealant from the factory for the VC, only other Toyota sealant available is black that I'm aware of, it's very good I'm sure but pricey. I've used Permatex Ultra grey on 4R and Mitsubishi VC, Oil pans, differentials, Manual Transmission halves, Auto trans pans, oil pump housings and many other components, never had a problem, just make sure your prep work is immaculate.
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Old 01-06-2021, 11:47 AM #10
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Quote:
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Oem with everything.. McGeorge toyota parts is one of the less expensive sites.
Thank you.
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Old 01-06-2021, 12:25 PM #11
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Just use OEM parts. Also, this job isn't just valve cover gaskets if you want to do it right. You should also be replacing the cam plugs on the rears of the heads, you should be removing and resealing the 4 half moons on the heads, you should replace the spark plug tube seals, you should buy new valve cover bolt washers, you should replace both plenum gaskets, you should consider replacing the throttle body gasket, you should consider replacing the PCV valve and grommet, you should consider replacing the spark plugs and spark plug wires while doing this job and you should consider cleaning your throttle body, IAC, and MAF sensor while doing this job.

In regards to the RTV or FIPG to use, I recommend you go with the Toyota 103 FIPG (black) The red FIPG is for transmission, transfer cases and differentials. Don't do what the write-up suggests and put a huge bead of RTV on the heads. That is totally unnecessary. Ramon did a great job on his write-up for this job, but his application of FIPG was pretty ridiculous and way overkill. You only need to put it over the half moon junctures and in the corners of the cam humps. You also need to put some onto the cam plug collars when installing the new cam plugs. The cam plugs Do Not require FIPG on them like some guys do. The cam plugs have a rubberized outer surface and that makes a seal with the head and collar just fine. Adding FIPG to the cam plugs is just going to make it a nightmare to clean out the old FIPG at the back of the heads if you ever have to perform this job again. Good luck!

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Old 01-06-2021, 01:23 PM #12
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Agree with above, I would do as much as I can while Ive got it all apart.

just remeber torque for the valve cover bolts is in INCH POUNDS. You can convert to foot pounds. But these covers crack easy, luckily not me yet.
there are other parts of your car that use inch pounds for torque, so good excuse to buy one I had one from working on motorcycles.
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