M45 rebuildhelp

Forum for Infiniti M35 and M45, and Nissan Fuga owners.
Smhooligan
Posts: 3
Joined: Wed Mar 27, 2019 10:20 pm
Car: 2007 Infiniti M45S

M45 rebuildhelp

Postby Smhooligan » Thu Mar 28, 2019 9:51 am

So I have a 07 M45 Sport that my wife spun a #4 rod bearing.... I have the entire rotating assembly ripped apart. My problem is I can't find ANY aftermarket pistons or rods for the 45, only 35. I saw the are dnj kits for 04-05 m45's, but aren't they pretty much same engines?


EniGmA1987
Posts: 2045
Joined: Tue Apr 28, 2009 5:13 am
Car: '06 M35 Sport

Re: M45 rebuildhelp

Postby EniGmA1987 » Thu Mar 28, 2019 11:01 am

I was pretty sure they were the same VK45DE engines. Looked it up on wikipedia to verify, and it is listed as VK45DE for both Y34 and Y50 bodies. The weird part though, is the Y34 model says it has 340hp, and the y50 model says it has 325hp. So....? Probably just tuning differences, as the engine in the FX45 models is listed as 320hp, and the President model still is called the VK45DE yet has a measly 276hp. If I look up the actual VK45DE engine it says it is a 340hp model and lists the engine as being used from 2003-2010 in M45s.

In looking up the VK45DE, I was quite surprised by its capability that was so underutilized. In race trim limited power spec it has 493hp, and non-limited race spec can reach 789hp!!! :blush: I want...



ANYWAY. you can preobably buy a whole used engine and scavenge the necessary parts from it (or just use the engine as is?) for cheaper than aftermarket, new rods, bearings, and pistons.

Smhooligan
Posts: 3
Joined: Wed Mar 27, 2019 10:20 pm
Car: 2007 Infiniti M45S

Re: M45 rebuildhelp

Postby Smhooligan » Thu Mar 28, 2019 11:43 am

EniGmA1987 wrote:
Thu Mar 28, 2019 11:01 am
I was pretty sure they were the same VK45DE engines. Looked it up on wikipedia to verify, and it is listed as VK45DE for both Y34 and Y50 bodies. The weird part though, is the Y34 model says it has 340hp, and the y50 model says it has 325hp. So....? Probably just tuning differences, as the engine in the FX45 models is listed as 320hp, and the President model still is called the VK45DE yet has a measly 276hp. If I look up the actual VK45DE engine it says it is a 340hp model and lists the engine as being used from 2003-2010 in M45s.

In looking up the VK45DE, I was quite surprised by its capability that was so underutilized. In race trim limited power spec it has 493hp, and non-limited race spec can reach 789hp!!! :blush: I want...



ANYWAY. you can preobably buy a whole used engine and scavenge the necessary parts from it (or just use the engine as is?) for cheaper than aftermarket, new rods, bearings, and pistons.
I know the 04 had a different intake, but the Piston and rods should be the same. I thought about just getting a used motor and using the internals like you said, but I'd like to put new ones since it's open.

EdBwoy
Moderator
Posts: 3295
Joined: Tue Dec 25, 2012 12:47 am
Location: St. Louis Metro East - IL
Contact:

Re: M45 rebuildhelp

Postby EdBwoy » Thu Mar 28, 2019 12:56 pm

There is info here that you might find to be of help with what you're looking for:
06-infiniti-m45-vk45de-engine-rebuilt-n ... l#p6765772

Smhooligan
Posts: 3
Joined: Wed Mar 27, 2019 10:20 pm
Car: 2007 Infiniti M45S

Re: M45 rebuildhelp

Postby Smhooligan » Thu Mar 28, 2019 1:55 pm

EdBwoy wrote:
Thu Mar 28, 2019 12:56 pm
There is info here that you might find to be of help with what you're looking for:
06-infiniti-m45-vk45de-engine-rebuilt-n ... l#p6765772
Thanks! Also trying to post pics, but not too sure how. EdBwoy I saw your signature with the instructions, but on my phone it brings up the mobile version which wasn't the same as the instructions.

http://imgur.com/a/87IFGX6


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