M50NV ecu swap?

[evandael]

Quick question,

I'm considering a NV swap but would like to keep open the possibility for a turbo build in the future. I've read that TU motors come with a different ecu that is more readily chip tuned (like with TRM tunes).

I am wondering if in the future I could adapt a TU ecu, harness, and other ancillaries to the NV motor to make the tuning process easier (instead of using megasquirt or an expensive standalone).


Also as far as the prep goes, I'd pretty much only need an MLS head gasket and ARP studs, and be good to go right? I would be looking for modest boost and power goals (10psi or not more than 300whp).


Thanks!

[jrdeamicis]

Quick question,

I'm considering a NV swap but would like to keep open the possibility for a turbo build in the future. I've read that TU motors come with a different ecu that is more readily chip tuned (like with TRM tunes).

I am wondering if in the future I could adapt a TU ecu, harness, and other ancillaries to the NV motor to make the tuning process easier (instead of using megasquirt or an expensive standalone).


Also as far as the prep goes, I'd pretty much only need an MLS head gasket and ARP studs, and be good to go right? I would be looking for modest boost and power goals (10psi or not more than 300whp).


Thanks!

Everything vanos will bolt on. When you turbo you should just vanos at the same time. WOOHOO..


You could run stock head bolts and stock gasket, many guys have done with it great success. A lot of failures that have happened were because of bad tunes.

MLS gaskets can be quite a pain in the ass. I would get your deck checked and the head and get some true flatness going, run a BMW gasket and BMW Bolts.

[evandael]

I suppose I could go full VANOS, if the price for the head was right. But would the VANOS ECU be confused with the NV head in place?


And as far as the turbo build.. I would just machine the block deck and head, OEM gasket, and get a good tune? That's pretty excellent. I suppose if I really wanted to build it, I would o-ring the block (just read that that is preferred to MLS gaskets) and use ARP studs.

[ForcedFirebird]

You are going to want a thicker head gasket. Boosting 10:1 works, yes, but if you have any detonation, bye bye. It's common to use a .140" gasket if you aren't lowering the CR with custom pistons.

[Wanganstyle]

I suppose I could go full VANOS, if the price for the head was right. But would the VANOS ECU be confused with the NV head in place?


And as far as the turbo build.. I would just machine the block deck and head, OEM gasket, and get a good tune? That's pretty excellent. I suppose if I really wanted to build it, I would o-ring the block (just read that that is preferred to MLS gaskets) and use ARP studs.

OEM head gasket + o ringing is quite good. with stock head bolts should handle most of what 91 octane poop gas can do. With ARP studs a local has done over 1krwhp with stock gasket + O ring.

Install the vanos to the M50 non vanos head.

http://forums.bimmerforums.com/forum/showthread.php?t=1379263

[evandael]

it seems like it would make more sense for me to just start with a vanos motor... regardless, if i can get a deal on the NV motor i'm just going with that!


so it's a definite NO on the TU ecu working with the NV head?

[Wanganstyle]

it seems like it would make more sense for me to just start with a vanos motor... regardless, if i can get a deal on the NV motor i'm just going with that!


so it's a definite NO on the TU ecu working with the NV head?

read above linked thread; you ADD VANOS to the non vanos head. then the DME does not know anything changed

I installed a M50 nv head in place of a s52 head on my 1997 M3. nothing else was changed, S52 original obd2 DME was used with all sensors staying in my car attached to my block.

[ForcedFirebird]

OEM head gasket + o ringing is quite good. with stock head bolts should handle most of what 91 octane poop gas can do. With ARP studs a local has done over 1krwhp with stock gasket + O ring.

Install the vanos to the M50 non vanos head.

http://forums.bimmerforums.com/forum....php?t=1379263

With stock compression? You like bf.c, yet everyone will tell you there as well that the stock compression won't last over 8psi.

read above linked thread; you ADD VANOS to the non vanos head. then the DME does not know anything changed

I installed a M50 nv head in place of a s52 head on my 1997 M3. nothing else was changed, S52 original obd2 DME was used with all sensors staying in my car attached to my block.

The DME's are different. Sure, you can run a NV ECU with a vanos head, but the cam timing will be fixed, why put vanos if you aren't going to use it?

[evandael]

read above linked thread; you ADD VANOS to the non vanos head. then the DME does not know anything changed.

The DME's are different. Sure, you can run a NV ECU with a vanos head, but the cam timing will be fixed, why put vanos if you aren't going to use it?

Maybe I'm not being clear with my questions. Wanganstyle is saying I add vanos cams and the vanos actuator to the NV head, hook up the TU ecu and it's all good to go.

Firebird, what I'm aiming to do is run the TU ecu for tuning reasons, not to actuate vanos (and with the NV head, it wouldn't be there at all).


Thanks everyone!

[ForcedFirebird]

Oh, OK. Yeah, there's a lot more support for the 413 DME's. I was getting confused with the other posts talking about "the ECU thinks, or doesn't know". We have used the emulator on 413's and tuned them, same equipment for the m20/m42/m30 (well any OBD1) Motronic stuff.