2004 350z replace rings or replace engine

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Crow350z
Posts: 1
Joined: Mon Nov 16, 2020 4:13 pm
Car: 2004 Nissan 350Z

2004 350z replace rings or replace engine

Postby Crow350z » Thu Nov 19, 2020 12:04 am

2004 350z replace rings valve stem seals or buy used engine


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mrwrolguy
Posts: 83
Joined: Sun Nov 26, 2017 2:39 pm
Car: 2004 White 350z Touring Edition

Re: 2004 350z replace rings or replace engine

Postby mrwrolguy » Sat Nov 21, 2020 8:32 pm

replace engine... you can get a JDM engine shipped from Japan 50k+ miles for 1500$ and remove the Cats and replace with resonated test pipes... the cat dust on decel getting pulled back into cyl destroyed your rings. I swapped my engine is a couple of weekends. Good Luck. ps mark everything and take pictures expec the coils and injector plugs if you swap engine harness.

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VStar650CL
Posts: 2707
Joined: Thu Nov 12, 2020 1:25 pm
Car: 2013 Nissan Altima 2.5 SL
2004 Nissan Altima 2.5 S

Re: 2004 350z replace rings or replace engine

Postby VStar650CL » Sat Nov 21, 2020 8:46 pm

Good advice. We see "cat inhalation" all the time, and not just on Z's. Nissans all have exaggerated valve overlap to suck back a little exhaust and avoid the need for an EGR. Works great unless a cat goes bad, then it inhales metal. It isn't worth re-working them once the walls are scrubbed.

Emrys
Posts: 3
Joined: Mon May 10, 2021 4:49 am
Car: 2006 Nissan 350Z

Re: 2004 350z replace rings or replace engine

Postby Emrys » Thu Jul 15, 2021 11:23 am

mrwrolguy wrote:
Sat Nov 21, 2020 8:32 pm
replace engine... you can get a JDM engine shipped from Japan 50k+ miles for 1500$ and remove the Cats and replace with resonated test pipes... the cat dust on decel getting pulled back into cyl destroyed your rings. I swapped my engine is a couple of weekends. Good Luck. ps mark everything and take pictures expec the coils and injector plugs if you swap engine harness.
Any suggestions on a good JDM engine importer?

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mrwrolguy
Posts: 83
Joined: Sun Nov 26, 2017 2:39 pm
Car: 2004 White 350z Touring Edition

Re: 2004 350z replace rings or replace engine

Postby mrwrolguy » Thu Jul 15, 2021 5:26 pm

I found mine via craigslist... I was in Houston and was a short trip... most large cities have importers


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