Replace Valve Cover Gasket

Forum for Infiniti M35 and M45, and Nissan Fuga owners.
gavnator
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Replace Valve Cover Gasket

Postby gavnator » Thu Aug 05, 2021 1:45 pm

I went to the Infiniti Service dept. today to have some needed maintenance done on my 06' M35x with 106,000 on the clock. Transmission flushed, F/R differential and transfer case fluid changed, oil change and some other items. They do a complete review of the vehicle. I was told the valve cover gaskets are starting leak at the rear of the engine. Not bad, just weeping a little bit. I got a quote of $1600.00 to replace the covers. Obviously, this is all labor but sounds somewhat high. It a good service dept, and they've been fair with other services. Just checking in to see if others have had this service and if so, related costs.


EniGmA1987
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Re: Replace Valve Cover Gasket

Postby EniGmA1987 » Thu Aug 05, 2021 2:17 pm

You can get new covers and gaskets for like $300 or something at Z1 Motorsports. Or just new gaskets which may be all you need are like $30. I think I was quoted around $450 last time I had my gaskets replaced because labor costs are high. I stopped paying for it after the first time I had to and just did it myself from them on.
It is a time consuming job, I would say 4-5 hours of actual work simply because you have to remove the whole intake manifold from the engine as well. It is best to start in the morning, 2-3 hours before lunch time. Get the engine stripped down and take off the old gaskets. Clean up the engine block and old covers (if you are not replacing them) of the old RTV. Be sure and get all of it off. Then put some new RTV on the valve cover and seat the new gasket into it.
Go to lunch while the RTV dries.
Come back and do the RTV on the engine block and seat the valve cover and new gasket onto the engine. Then put all the other stuff back on. By the time you get it all done the RTV on the engine should be dried and the engine ready to start.

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Re: Replace Valve Cover Gasket

Postby Larz » Thu Aug 05, 2021 8:38 pm

If doing it yourself, and you are able to leave the car idle for a couple of days, you might consider replacing other items to avoid having to dismantle half the engine bay in the future. This forum has a wealth of knowledge available in the DIY posts and there are also videos on You Tube if needed.

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MM...Good
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Re: Replace Valve Cover Gasket

Postby MM...Good » Fri Aug 06, 2021 10:47 am

Honestly, if its just weeping and not a serious leak, just keep an eye on the oil level between changes. I had the same issue (at least that's what my dealer said) on my 2006 and I never even had to add oil. That car was totaled with about 105K on the clock. My 2007 has 143K (119K when I got it) and if its got a leak, I wouldn't know it. I do change oil about every 3,500 miles though.

gavnator
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Re: Replace Valve Cover Gasket

Postby gavnator » Fri Aug 06, 2021 1:39 pm

I agree. I will keep my eye on the dip stick as I usually do and look for signs of leakage. My oil is usually changed way before the mileage timeline of 3500 as the M35x is not my primary use vehicle. Thanks all for your comments. M35/45 forum has help me resolve so many issues. It’s a great working group 👍👍

bicsintegra
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Re: Replace Valve Cover Gasket

Postby bicsintegra » Mon Sep 13, 2021 6:36 pm

I just did mine and I used felpro no problems thus far, it did take me a couple of weekends because i did plugs, plenum spacer, CAI, valve cover gaskets, aluminum under shroud, radiator, fan shroud, oil change, and i just did Rev9 coilovers this weekend.


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