M62 4.6 info

[Jean]

As I was browsing through to learn about the differences between the 4.6is parts, I found the following parts that are shared with the older engines and some are specific only to x5 4.6is and the e52 alpina

Some have replaced the 4.4 m62tu blocks with the 4.6 from the 01-03 x5 to get the larger displacement, so this is why I did some looking. The even later 4.8 block is too much different, so not even worth looking.

The 4.6 is rated at about 350hp vs 300 for the 4.4

------------------ part one ----------------


4.6 block with pistons - 11117512872 - specific to x5 4.6is
4.6 lower cover - 11141708209 - used on e38/e39/e53

4.6 upper timing covers 11141745506 / 11141745509 - used on e38/e39/e52/e53
4.6 valley cover - 11141742042 used on e31/e32/e34/e38/e39/e53)
4.6 rear upper seal cover/gasket 11141729832/ 11141729836 used on e31/e32/e34/e38/e39/e53)
4.6 rear main seal 11141710247 - used on e31/e32/e34/e38/e39/e53)
4.6 lower pan 11137500210 - specific to 4.6

4.6 cyl gasket 11127519410 / 11127519406 - specific to 4.6 and e52 alpina
4.6 cyl head 11127512607 / 11127512608 - specific to 4.6

4.6 crank with shells - 11217512876 - specific to 4.6
4.6 connecting rods - 11241725809 (used on e31/32/34/38/39/53)
4.6 piston alusil mahle - 92.98mm - 11257512411 (specific to 4.6)


------------------ part two : valve train and cams ----------------


alpina intake cam 11318025823 / 11318025824 specific to alpina e52
alpine exhaust cam 11317513235 / 11318025824 specific + x5 4.6is

x5 4.6is intake cam 11317513227 / 11317513231 - specific to 4.6is
x5 4.6is exhaust cam 11317513235 / 11317513238 - specific to alpina e52 + x5 4.6is

e52 alpina valves
INTAKE VALVE 35,0/5,94MM 11341435480 (same as on e31/e32/e34/e38/e39/e52 alpina/e53 4.4i and 4.6is)

EXHAUST VALVE 30,5/5,94MM 11341435482 (same as on e31/e32/e34/e38/e39/e52 alpina/e53 4.4i and 4.6is)

Hydraulic valve lifter 11321440256 (same as on e31/e38/e39/e52 alpina/e53 4.4i and 4.6is) (note, not the same as the e32/e34)

[JGood]

The 4.6 engines are expensive due to rarity. I'm on xoutpost.com a lot, and I've only seen one for sale...for $7k. I'm curious of the actual WHP difference of the 4.4 and 4.6. I don't think I've seen a proper comparison of the two on a dyno (or ever, for a 4.6, for that matter). And I'm curious how much of that difference is simply in the intake manifold (the 4.6 comes with the 'non-vanos' manifold that all the vanos m62 guys love.) So add that to your list. And obviously the tune... Since it's an Alpina spec'd engine, it would only be fair to moderately tune the 4.4 as well (although I'm not sure there's many gains to be had). Basically, I question if the cost of the 4.6 engine is worth a crap, unless you need every last HP. We all know the m62b44TU's nearly put down in WHP what BMW rated them at in crank HP (270-280). If BMW didn't do the same for the 4.6, and you figure ~17% on 347 HP, that's only 288whp...

The later 4.8 engines are a different animal as you said, they are actual an N62 engine. The engine/trans harness and computers are tied heavily into the drivetrain and body control modules. That would be an insane project.

I have the m62b44TU in my 2002 X5, if anyone has any questions they want answered about parts (pics, dimensions, etc...). I haven't tore into it too much, just timing cover and valve cover gaskets.

I'm really starting to gain interest in doing an m60/m62 swap in my e30. I've got it down to a bare shell currently, doing some rust repair and am debating to put the cammed m50 back in, do an s52, or do an m62. This swap doesn't seem overly difficult...

[Jean]

I currently have a 94/95 m60b40, and will add m62b44 to the mix eventually when one comes up at a good price. I thought it was interesting to know what changed with these over the years/models before getting into an overly complicated N62.

The thought of a non vanos stout 4.6-4.8L making 350-400hp in a light e30 makes me grin like an idiot.

I would like to learn more about the various cams OEM cams used in different models/years, interestingly the valve size remained the same from what 93 to 2003?


The M62TU block (should be the same as in your X5 m62b44tu as you call it) might be a way to go as well with non vanos hardware/heads and maybe even 4.6is cams if they fit....


And here is one thread on 4.6 to 4.8 swap.

http://www.bimmerfest.com/forums/showthread.php?t=290730

[Jean]

"M62B46 is the name of the BMW variant of the B10 V8 (347hp) engine. It's pretty much identical to the Alpina engine but mass-produced instead of handbuilt. In the X5 4.6iS it produces 342hp and 480Nm."

http://www.m5board.com/vbulletin/alpinaboard-com-bmw-alpina-discussion/124980-b10-v8-single-double-vanos.html

[Jonsku]

Are the problems related to head-gasket failures with the larger bore engines (especially 4.6, maybe 4.8?) true or exaggerated? I've heard rumours of the 4.6 head gaskets failing on their own, though not sure if it's just BS...

Otherwise, M60B44 with proper head-work is very tempting idea :)

[Jean]

Are the problems related to head-gasket failures with the larger bore engines (especially 4.6, maybe 4.8?) true or exaggerated? I've heard rumours of the 4.6 head gaskets failing on their own, though not sure if it's just BS...

Otherwise, M60B44 with proper head-work is very tempting idea :)

Yeah, B44 is doable...just don't know yet if the 62B44 and 62tU blocks are the same or not.

I am going to compare the 62tu with b40 head gasket profile, and possibly with b44nv in the near future to start with. I have a lead on the 62tu and b44 engines, just need to confirm if I'll be able to use the 62tu with b40 heads...

[glucklich21]

According to car-part.com, there's 4 available. Hella expensive.

[Jean]

Yes, 4.6s are expensive.... I made the thread just to get the info out to keep the "eyes/ears open" for it.

Here is the Alpina E36 with the 4.6 swap http://www.alpina-archive.com/?page_id=59&nmt=B8-4.6

[mtnbikeman123]

So the B46 has different cams than the B44, I looked around and could find zero information about the individual cam profiles. Does anyone have any insight on whether the B46 cam has greater lift and/or durations than the B44?

I cant find a used set of B46 cams so the point may be moot, but if there are gains to be had, maybe I could regrind a set of B44s for less than a new set of B46s

[Etexise30]

fuck the B46 and get the S62

[mtnbikeman123]

I agree, I am trying to minimize cost though....

[iamsam]

fuck the B46 and get the S62

It's all about cost. The reason the M60B44 hybrid is becoming a sought after swap is because they are so darn cheap. M60s and M62s alike can be had for nearly free.

For S62 money, you may as well go LSx/T56 and make more power with greater reliability, robustness, and a huuuuge aftermarket.


Every time I hear someone say something along the lines of "Dude, be a man and just go S62/M88/otherhugelyoverpricedengine", I want to pummel them with cans of diced peaches.

And 100% of the time, the person saying it does not own the engine that they are referring to.

That said, I don't own an LSx... ;)

[Etexise30]

It's all about cost. The reason the M60B44 hybrid is becoming a sought after swap is because they are so darn cheap. M60s and M62s alike can be had for nearly free.

For S62 money, you may as well go LSx/T56 and make more power with greater reliability, robustness, and a huuuuge aftermarket.


Every time I hear someone say something along the lines of "Dude, be a man and just go S62/M88/otherhugelyoverpricedengine", I want to pummel them with cans of diced peaches.

And 100% of the time, the person saying it does not own the engine that they are referring to.

That said, I don't own an LSx... ;)

ive been inside a e39 m5 and HOLY SHIT!!!! but i got the 62Tu and its supposed to have more torque but idk im still dealing with ews b.s

[iamsam]

ive been inside a e39 m5 and HOLY SHIT!!!!

Be inside a Corvette Z06 and let me know how that goes.

[Etexise30]

Be inside a Corvette Z06 and let me know how that goes.

ive been in one and its scary quik