Upper Oil Pan Got Me…

Forum for Infiniti M35 and M45, and Nissan Fuga owners.
SeveLampley
Posts: 37
Joined: Tue Feb 18, 2020 8:04 am
Car: 2007 Infiniti M35-k23 silver, 5 stage paint correction, 2 ceramic coats, full bolt on, uprev tuned, d&s rotors, hawks hs1 pads, dot 5.1 steel lines

Upper Oil Pan Got Me…

Postby SeveLampley » Sun Oct 31, 2021 9:16 am

2007 m35 base rwd
Doing a routine oil change, wanted to drain my after market oil cooler, went to undo the the hoses to the sandwich plate. Snap! Cracked the plastic part of the oil pressure sensor. Went to oriellys and got a new one, went to torque it to 11 ft/lbs…….. bam cracked the upper oil pan. i have ordered a new OEM one from infiniti of orland park. along with the 2 o-rings and 2 front and rear gaskets and the oil filter pressure regulator. Other than the oil cooler gasket i believe i have accounted for everything. Has anyone else done this? Looks like i’m going to have to drop the subframe and support the engine from up-top. being that our cars are less common than others i haven’t really found much info on the job…. other than that it will be a complete PITA. If anyone has a work around for the this or short cuts/tips that will assist in making this go smoothly that would be greatly appreciated. Thanks


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Ilya
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Car: 2011 M56x but I spend a lot of time on my 2015 Kawasaki Vulcan S. Former owner of a 2007 M35x. Also take care of my wife's 2016 QX60.
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Re: Upper Oil Pan Got Me…

Postby Ilya » Sun Oct 31, 2021 10:01 pm

Paging VStar650CL!

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VStar650CL
Posts: 3170
Joined: Thu Nov 12, 2020 1:25 pm
Car: 2013 Nissan Altima 2.5 SL
2004 Nissan Altima 2.5 S

Re: Upper Oil Pan Got Me…

Postby VStar650CL » Sun Oct 31, 2021 11:11 pm

I've done plenty of transverse 3.5's and RWD 4.0's but no RWD 3.5's. I can ask our Z-maven on Tuesday, he'll have better answers than I do. For now I'll say there are no good shortcuts on either one of those. On the 4.0's you need to be very careful with the rear gallery o-ring, a leak back there will make your engine very sorry. Use new rings, period. Have a full tube of Gray Death and a seal cutter, the lower pan can usually be pried loose but the upper pan has to be cut.

I'm a little puzzled how you managed to crack the upper pan. If memory serves, the EOP sensor should be in the filter bracket and not the pan itself. The bracket should just be 3 bolts, although it may be in a bad spot (like everything else on an M).
:confused:

SeveLampley
Posts: 37
Joined: Tue Feb 18, 2020 8:04 am
Car: 2007 Infiniti M35-k23 silver, 5 stage paint correction, 2 ceramic coats, full bolt on, uprev tuned, d&s rotors, hawks hs1 pads, dot 5.1 steel lines

Re: Upper Oil Pan Got Me…

Postby SeveLampley » Tue Nov 02, 2021 6:29 am

VStar650CL wrote:
Sun Oct 31, 2021 11:11 pm
I've done plenty of transverse 3.5's and RWD 4.0's but no RWD 3.5's. I can ask our Z-maven on Tuesday, he'll have better answers than I do. For now I'll say there are no good shortcuts on either one of those. On the 4.0's you need to be very careful with the rear gallery o-ring, a leak back there will make your engine very sorry. Use new rings, period. Have a full tube of Gray Death and a seal cutter, the lower pan can usually be pried loose but the upper pan has to be cut.

I'm a little puzzled how you managed to crack the upper pan. If memory serves, the EOP sensor should be in the filter bracket and not the pan itself. The bracket should just be 3 bolts, although it may be in a bad spot (like everything else on an M).
:confused:
It is for sure the upper pan, and the pressure sensor is right next to the “oil cooler” if it can even be called that. I cant complain too much, she hit 170k last week and has not given me a problem that i haven’t caused by modding it and a bad battery so far. Currently trying to find a engine support/hoist(not a cherry picker the other type blanking on the name rn) Does anyone know if harbor frieght carriers them? It wouldn’t be the worst thing to have around being that my plans for this car include 700+ hp, it’s got all the supporting stuff now(big oil and big trans cooler. Big radiator, full poly suspension, Tien Coilovers, tuned) Hopefully all the parts come in friday and i can get her back rolling the way she way mid day saturday

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VStar650CL
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Car: 2013 Nissan Altima 2.5 SL
2004 Nissan Altima 2.5 S

Re: Upper Oil Pan Got Me…

Postby VStar650CL » Tue Nov 02, 2021 7:01 am

Yah, HF does have hoists. Several kinds as I recall.

EniGmA1987
Posts: 2133
Joined: Tue Apr 28, 2009 5:13 am
Car: '06 M35 Sport

Re: Upper Oil Pan Got Me…

Postby EniGmA1987 » Tue Nov 02, 2021 7:57 am

SeveLampley wrote:
Tue Nov 02, 2021 6:29 am
It wouldn’t be the worst thing to have around being that my plans for this car include 700+ hp, it’s got all the supporting stuff now(big oil and big trans cooler. Big radiator, full poly suspension, Tien Coilovers, tuned) Hopefully all the parts come in friday and i can get her back rolling the way she way mid day saturday
Hopefully you also put new connecting rods in the engine. Stock rods will give out at around 400 wheel horsepower and it would be very bad to have one of those snap on you, it would mean a new engine. With just new rods and fuel injectors you should be able to get 700whp on these engines, though of course new ARP bolts would also be something recommended at that point since you probably will not last very long on stock bolts before they are stretched out of spec. You may also need a thicker head gasket to lower your compression if you are not going with new pistons.
Sorry for the thread jack, just want to make sure you are safe about it and not about to blow your engine up.


SeveLampley
Posts: 37
Joined: Tue Feb 18, 2020 8:04 am
Car: 2007 Infiniti M35-k23 silver, 5 stage paint correction, 2 ceramic coats, full bolt on, uprev tuned, d&s rotors, hawks hs1 pads, dot 5.1 steel lines

Re: Upper Oil Pan Got Me…

Postby SeveLampley » Tue Nov 02, 2021 12:59 pm

EniGmA1987 wrote:
Tue Nov 02, 2021 7:57 am
SeveLampley wrote:
Tue Nov 02, 2021 6:29 am
It wouldn’t be the worst thing to have around being that my plans for this car include 700+ hp, it’s got all the supporting stuff now(big oil and big trans cooler. Big radiator, full poly suspension, Tien Coilovers, tuned) Hopefully all the parts come in friday and i can get her back rolling the way she way mid day saturday
Hopefully you also put new connecting rods in the engine. Stock rods will give out at around 400 wheel horsepower and it would be very bad to have one of those snap on you, it would mean a new engine. With just new rods and fuel injectors you should be able to get 700whp on these engines, though of course new ARP bolts would also be something recommended at that point since you probably will not last very long on stock bolts before they are stretched out of spec. You may also need a thicker head gasket to lower your compression if you are not going with new pistons.
Sorry for the thread jack, just want to make sure you are safe about it and not about to blow your engine up.
Nope just bolted a 90mm t4 to her and hoped for the best lol, kidding, got a vq in my garage from an 07 m35 base, body was beat to high hell and interior was torn apart so i just pulled it out. currently peicing the motor part of the equation, will work my way from the turbo set up to trans to diff and axels when it’s time. i wanna get everything ready so i can just put it together and really not have to worry abt breaking it or overheating or anything else, it was tempting to grab the vq’s oil pan but i figure can hurt to have the new one

00pathyse
Posts: 149
Joined: Thu Aug 23, 2012 2:30 pm
Car: 2000 Nissan Pathfinder SE
2007 Nissan Altima 3.5 SE Sedan
Location: Toronto, Canada

Re: Upper Oil Pan Got Me…

Postby 00pathyse » Fri Nov 05, 2021 8:50 am

Subscribed

cruzad3r
Posts: 1333
Joined: Fri Mar 05, 2010 6:34 pm
Car: 2006 M35x fully loaded
Location: CT

Re: Upper Oil Pan Got Me…

Postby cruzad3r » Tue Nov 09, 2021 5:24 pm

i'm actually curious and want to see this cracked pan. is that weird? :D


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