M45 Upper Intake Manifolds

[crweaver]

Fellas, gotta quick question here. Will the upper intake from a 07 m45 fit the lower of a 04-05 m45? Just pondering some thoughts here.

[EdBwoy]

Not really, although the lower manifold will bolt on either engine. Whatcha thinking bout,...hmmm?

[crweaver]

Gotta replace my motor and I can get a brand new 03/05 m45/q45 motor for half the cost of a used m45 motor. The only differences I can see is the upper intakes...

[EdBwoy]

Not quite, there's more to it. Take some time to look over this thread that I created - v8-engine-replacement-options-do-the-03 ... 19905.html

[LIBRILZ]

man wth is up with all these M45 motor replacements

[EdBwoy]

crweaver, do you mind sharing what happened to your engine?

[crweaver]

it developed a knock in the engine. Sounded like someone was hitting it with a hammer. Then it locked up. Busted the oil pan and crushed #1 spark plug. Its toasted!

[crweaver]

edbwoy, check yo PM

[LIBRILZ]

yeah.........this makes me want to get rid of my M45

[FlawleZ]

yeah.........this makes me want to get rid of my M45

I have to laugh when I read this. You think his engine randomly developed a knock for no reason at all? These engines are only failing when proper maintenance or care isn't given. Sure, if you go 10K miles without changing the oil or you bounce the car off the rev limiter every day your engine won't live long. But neither will any other.

[LIBRILZ]

yeah.........this makes me want to get rid of my M45

I have to laugh when I read this. You think his engine randomly developed a knock for no reason at all? These engines are only failing when proper maintenance or care isn't given. Sure, if you go 10K miles without changing the oil or you bounce the car off the rev limiter every day your engine won't live long. But neither will any other.

Idk, I hear of quite more than a few having engine problems..I know some other VK45s seem to always show poor metal wear numbers in oil analysis that are done..stuff just makes me nervous lol

Granted a few days ago I saw a video on youtube of a guy with 233K on his M45, he said it was doing fine just had to replace a cam angle sensor or something like that

fwiw my 2001 I30 used to see redline all the time, I drove it till 203K with zero mechanical issues lol

[macgiver]

mac , FlawlesZ - "bounce the car off the rev limiter" That's a good one . M45 owners should maybe get a magnetic drain-plug , when you see a BRILLO pad hanging off it next oil change - goto Plan-B

[crweaver]

yeah.........this makes me want to get rid of my M45

I have to laugh when I read this. You think his engine randomly developed a knock for no reason at all? These engines are only failing when proper maintenance or care isn't given. Sure, if you go 10K miles without changing the oil or you bounce the car off the rev limiter every day your engine won't live long. But neither will any other.

Yes it did develop a knock for no reason. Hell they're failing even with proper maintenance lol. With any high mileage motor problems are bound to happen. 10k on a oil change is nothing. Been using Amsoil for 7 years and changed oil at 15k. Got 290k miles out of it before it decided go. Sure I drove it hard from time to time but who don’t. My 02 Tahoe just 356k and I have a motor waiting on it too so when it decides to go to motor heaven the transplant will begin.

[macgiver]

mac, a magnetic drain-plug should be a free giveaway with every amsoil order ?? Reading between the lines here? I hear there's a push for the purple oil to give'm out too. Then the "card" will say to
change your oil AFTER 25kmi .

[EdBwoy]

I tried to get some conversation going to figure out why these engines seemed to be more sensitive to normal abuse and neglect. The thread didn't go too far.

All I advise people is to keep an eye on their oil levels. That 10k mentioned as an example, might not be bad for a drain and refill; but you should not shut your hood then only open it after 10,000 miles. Oil consumption is still happening and you could be running dry way before your next oil change.

[crweaver]

I tried to get some conversation going to figure out why these engines seemed to be more sensitive to normal abuse and neglect. The thread didn't go too far.

All I advise people is to keep an eye on their oil levels. That 10k mentioned as an example, might not be bad for a drain and refill; but you should not shut your hood then only open it after 10,000 miles. Oil consumption is still happening and you could be running dry way before your next oil change.

Agreed on that. Luckily this was one of the few where oil consumption was very minimal. Still kept an eye on it though. found out today that the oil pump failed due to low psi. Once we dropped the oil pan one of the two "O" rings was missing. The other one was cracked and pretty brittle. My guess is when it went to the dealer a few years ago for a cracked oil pan, they didn't change them out. Too late now

[LIBRILZ]

I have to laugh when I read this. You think his engine randomly developed a knock for no reason at all? These engines are only failing when proper maintenance or care isn't given. Sure, if you go 10K miles without changing the oil or you bounce the car off the rev limiter every day your engine won't live long. But neither will any other.

Yes it did develop a knock for no reason. Hell they're failing even with proper maintenance lol. With any high mileage motor problems are bound to happen. 10k on a oil change is nothing. Been using Amsoil for 7 years and changed oil at 15k. Got 290k miles out of it before it decided go. Sure I drove it hard from time to time but who don’t. My 02 Tahoe just 356k and I have a motor waiting on it too so when it decides to go to motor heaven the transplant will begin.

290K isn't too bad..I've seen some meet similar fates with far less mileage, sure..there could be user error involved

But comparing the VK to the engine in my 99Q45 and 01 I30, the older Infiniti seem to not care about abuse or neglect as much, not to mention they didn't burn oil or anything of the like..I really enjoy the engine in both of those cars..Might have to get another I30/35/Q45 one day, I really liked both those cars. Hell the sound system in both of them were in many ways better than my M as well, the Q45 had a great sound system..Granted I have the middle tier Sound package in the M, but still think it should sound better