A look at Aresenal Motorsports N54 engine build packages - S 600, S 850, S 1000, and 1XXX hp capable

[Eleventeen]

Because it will actually handle that amount on the roadcourse lap after lap and not just dyno pull after dyno pull.

Still a crap shoot with stock rods and valve train. $6750 for some head porting and new pistons? Pistons are probably the cheapest part of a good build.

[Sticky]

Still a crap shoot with stock rods and valve train. $6750 for some head porting and new pistons? Pistons are probably the cheapest part of a good build.

I'm not going to defend their pricing but it's very difficult to say what the N54 can handle as it completely depends on the application and use.

1 guy has a 1/2 mile car, another a roadcourse, another a commuter that rarely gets pushed, etc. Very different wear and tear.

When we say what the motor can do it is in very general terms and usually based on what it hit on the dyno nevermind how long it lasted after that.

[FRNTHVY]

Nobody ever posts their head flow data in the BMW world. It's lame.

Well, come to think of it, I think we only have head flow data from one set of N54 heads.

One of the main reasons I went with a stage 3 ABR head is because they DID provide me with flow results on my head. No one else would be willing to give me anything more than their generic marketing material or their "word".

Sam

[onurleft]

Not to be argumentative, but I've yet to ever see any mention of valve train float on these cars; or head gasket issues for that matter. If it's something to keep an eye out for I'm all ears. I was under the impression the stock head was designed fairly well.

Actually we were having blow by through the injector ports - not valve float. So we replaced the head.

An E36 head will out flow an N54 head .. so..

If anyone thinks these motors or any inlin6 from BMW doesn't have issues lifting the head, they need to go back to tuner school

[Cortez08]

If anyone thinks these motors or any inlin6 from BMW doesn't have issues lifting the head, they need to go back to tuner school

[93siro]

Nobody ever posts their head flow data in the BMW world. It's lame.

Well, come to think of it, I think we only have head flow data from one set of N54 heads.

You have 3.

One is from PAW. Old stuff, but still it's something.
Then you my mine. VAC stage 3.
And lastly, MMP.

I posted mine a long time ago here, i have to look where it is if you have to ask.

[Sticky]

One of the main reasons I went with a stage 3 ABR head is because they DID provide me with flow results on my head. No one else would be willing to give me anything more than their generic marketing material or their "word".

Sam

Any way we can see those numbers?

[Sticky]

You have 3.

One is from PAW. Old stuff, but still it's something.
Then you my mine. VAC stage 3.
And lastly, MMP.

I posted mine a long time ago here, i have to look where it is if you have to ask.

Yep that's right. The PAW was the original I think.

There are some stock N54 head flow figures around here somewhere. The results were... um... sad.

The E36 heads do indeed flow better.

[93siro]

Yep that's right. The PAW was the original I think.

There are some stock N54 head flow figures around here somewhere. The results were... um... sad.

The E36 heads do indeed flow better.

Thats due M5x having larger valves (35mm intake for s54 vs 31.5mm for n54) This trend of having over square design shows its big drawback which is small valves.

[KevinC39]

I'm guessing direct injection also contributes to the small valves?

[93siro]

Yes that too, however it’s actually more hurting the exhaust side than the intake side and the N54 is not that much worse than say S54 in that area and usually people don’t do porting on exhaust side. However if you do (i did), due to the small meat between port walls and injector housing, you can’t go as aggressive as a conventional PI head.

BTW earlier i meant to say under square not over square.

[Sticky]

So anyone know why these guys folded so fast?

I'm not surprised as they made big claims without any proof.

They disappeared almost as quickly as they showed up.

[Sticky]

Might explain a few things:

[maxnix]

Ouch. Better known than unknown.

[blaster3500]

It amazes me how much people will spend on an unproven vendor. I am not surprised by this at all.

[Sticky]

It amazes me how much people will spend on an unproven vendor. I am not surprised by this at all.

Boggles my mind as well. Even once you get more info out there and even point out scams (JPworkz...) people STILL will go to that vendor.

Human stupidity never ceases to amaze.