N63 Exhaust Manifold/Header conversion

[lenabos]

Has anyone ever attempted to swap the S63TU snake manifold for the basic N63 manifold?


N63


S63TU

I appreciate the S63TU flows infinitely better than the N63 but i'd happily sacrifice a few HP and some throttle response for that traditional V8 burble.

Has anyone tried it and what are the results?

[Craze]

This is stupid honestly
Why would you bother?

[Kyleo134]

I actually just did the opposite. I put the s63tu manifolds and turbos on my N63tu. Still trying to get it to run right.

[TinCanSailor]

Downpipes and an xpipe will go a long way to sporting up the sound of the engine.

[Dasky_spas]

Originally Posted by Kyleo134

I actually just did the opposite. I put the s63tu manifolds and turbos on my N63tu. Still trying to get it to run right.

Could you share via a post of your progress? I love my car but I really don't care for the lumpy note of the n63tu3 motor. The s63 sounds much better to me, much smoother so I want to upgrade to Weistec or Pure turbos and throw in the s63 manifolds to my g15.

Did you have to switch/swap precat 02 sensor plug in locations?

[Kyleo134]

I have an appointment with a tuner on thursday. Hoping he can get it running correctly. I will update the post when I find out.

[Dasky_spas]

Originally Posted by Kyleo134

I have an appointment with a tuner on thursday. Hoping he can get it running correctly. I will update the post when I find out.

Awesome. Great project!

[Dasky_spas]

Originally Posted by Kyleo134

I have an appointment with a tuner on thursday. Hoping he can get it running correctly. I will update the post when I find out.

How did the session go?

[Kyleo134]

It’s actually been postponed. I’ll post when the tune is complete though!

[JimiJoey]

Originally Posted by Kyleo134

It’s actually been postponed. I’ll post when the tune is complete though!

Any progress with your tune??

[JimiJoey]

Has actually anyone made this work?? Can’t find any proof of it.

[JimiJoey]

Hi,

Just wanted to share with you guys that it’s been done. I made the s63 exhaust manifold (cross banked) conversion to the n63 engine and it’s running great. Way better flow, less heat, better throttle response and gained performance. It sounds even better than it was.

It was a pain in the ass to find the right guy who could pull this off and get the car running right.. Tuner Vladfet did a fenomenal job

[Dasky_spas]

Originally Posted by JimiJoey

Hi,

Just wanted to share with you guys that it’s been done. I made the s63 exhaust manifold (cross banked) conversion to the n63 engine and it’s running great. Way better flow, less heat, better throttle response and gained performance. It sounds even better than it was.

It was a pain in the ass to find the right guy who could pull this off and get the car running right.. Tuner Vladfet did a fenomenal job

Was this done via coding logic or tuning? How long did it take to do the coding conversion?

[JimiJoey]

It was pure tuning the MSD85 dme. This can be done with a special interface from your obd port, no need to read/write in bench mode.

[Kamilos]

Hi, since last year I've been trying to figure out how to do it and whether it's worth doing it, the sound has changed a lot compared to the series? Is it more like the s63 engine? Do you have a recording?

[JimiJoey]

Originally Posted by Kamilos

Hi, since last year I've been trying to figure out how to do it and whether it's worth doing it, the sound has changed a lot compared to the series? Is it more like the s63 engine? Do you have a recording?

It is a very nice upgrade, there are not many N63’s with this setup. The sound isn’t like the s63 (higher pitched) it still has that n63 rumble(deeper tone), but more balanced and way better throttle response. Very pleased with it. I’ll try to post a video of it.

There are two ways to approach it, you can use s63 turbos (turbine housing to exhaust manifold straight fit) but you would need to change cooling lines from the turbos etc etc. Second option, use the stock turbos and machine the turbine housing to fit the s63 manifold. I went with the second option.

[Dasky_spas]

What about the oil cooler? The n63 motors use a large water to oil cooler in the engine 'valley' that takes up a lot of room there. It looks like the bulky oil cooler would be in the way of the s63 manifold. How did you sort that?

[scottminor]

So from what I am reading, you cannot just change the exhaust manifold. It looks like a tune is needed and some additional cooling line mods. In addition the N63 turbos will not mount to the S63 cross plane manifold.

[M5Rick]

The plot thickens .

[JimiJoey]

Originally Posted by Dasky_spas

What about the oil cooler? The n63 motors use a large water to oil cooler in the engine 'valley' that takes up a lot of room there. It looks like the bulky oil cooler would be in the way of the s63 manifold. How did you sort that?

Hi, it’s not a oil cooler, but a vacuum reservoir. There are two types of reservoirs. I have the flat plastic one. Just got some longer vacuum line and mounted it nicely to the subframe under the radiator pack.

[JimiJoey]

Originally Posted by scottminor

So from what I am reading, you cannot just change the exhaust manifold. It looks like a tune is needed and some additional cooling line mods. In addition the N63 turbos will not mount to the S63 cross plane manifold.

Don’t have to modify cooling lines when you use the n63 turbos.

[scottminor]

I have s63 cross exhaust manifold on the way. This is part of a bigger project.

Silicone intake tubes using 2020 M5 turbo intakes. I hope they fit.

Crank case catch can.

Charge pipes. I think the ARM versions.

Turbo blankets. Heat wrap or ceramic coating for new manifold. Thermal shielding for block valley.

I already have the Dinan Sportronic installed. Hopefully this will be more than just cosmetic. If it is then I hope to have some fun doing it.