Inspiration: Highly tuned S54

Westersund · 02-25-2016, 09:55 AM

Stumbled across these on a Swedish BMW forum. It's not a Z4 M Coupe, but it's still a S54 that resides in a E46 M3. Thought I'd share.

Spec:

- Stroked to 3.5L
- Forged crank shaft
- Ported head
- Bigger valves
- Stiffer valve springs
- New cam shaft
- Forged pistons
- Rev limiter raised to 8800 rpm
- 413 whp
- Etc...

longress · 02-25-2016, 02:27 PM

That's a sweet ride!

dubsesd · 02-25-2016, 03:47 PM

wow awesome!!

yousefnjr · 02-25-2016, 04:55 PM

Holy smokes

I wonder how much $

Westersund · 02-26-2016, 12:48 AM

Quote:

Originally Posted by yousefnjr

Holy smokes

I wonder how much $

The owner just said "XXX.XXX SEK" which translates to at least 15.000$ (exchange rate at the time), but it's probably closer to 30.000$ than 15.000$.

In todays exchange rate it would be 12.000-24.000$.

Vanne · 02-26-2016, 01:18 AM

stroker kit!!

Digs · 02-26-2016, 07:20 AM

That was nuts! And ear porn

ga41 · 02-26-2016, 09:19 AM

If it really pumps out that much horsepower it's amazing! But the sound isn't anything special really, i bet it sounds much nicer in person though.

Westersund · 02-29-2016, 08:50 AM

The owner just clarified some thing about his build. It cost him between 25,500-30,200$ in todays exchange rate between SEK and USD (favourable for the USD). That includes all parts and labour. According to the tuner building the engine the stock engine is only spec'd to 8300 RPM, after that the the engine will wear FAST. So raising the rev limiter on a stock engine isn't a good thing in terms of reliability (but it will give you 20-25 more hp, for a while

). What also was said is that the CSL intake only flows slightly better than the stock intake, which apparently can flow nicely up to 480 hp. A tune will not yield much without a different cam shaft, unless you raise mentioned rev limiter and compromise the reliability and health of the engine.

Most bang for the buck is a 296/280 cam shaft, which is the maximum duration the stock valve springs can handle reliably, and a tune and that will give you about 370 hp. That's what was said in the thread, so don't shoot the messenger. However I tend to believe someone who've spend more on the engine than the car is worth and the job was done by one of the best tuners (Köhler) in Sweden when it comes to NA BMW engines.

02-25-2016, 09:55 AM	#1
Westersund Captain 500 Rep 876 Posts Drives: BMW Join Date: Nov 2011 Location: Hallstahammar iTrader: (1)	Inspiration: Highly tuned S54 Stumbled across these on a Swedish BMW forum. It's not a Z4 M Coupe, but it's still a S54 that resides in a E46 M3. Thought I'd share. Spec: - Stroked to 3.5L - Forged crank shaft - Ported head - Bigger valves - Stiffer valve springs - New cam shaft - Forged pistons - Rev limiter raised to 8800 rpm - 413 whp - Etc...
	Appreciate 2 Tweet Quote

02-25-2016, 02:27 PM	#2
longress Second Lieutenant 105 Rep 233 Posts Drives: 2007 Z4M Coupe Join Date: Oct 2015 Location: Wyoming iTrader: (2)	That's a sweet ride!
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02-25-2016, 03:47 PM	#3
dubsesd #dubspec 6336 Rep 5,201 Posts Drives: G05 X5/ 2016 F80 M3 INDVL Join Date: Jul 2011 Location: Ottawa iTrader: (2)	wow awesome!! __________________ LCI ///F80 M3 Individual Atlantis Metallic / Black Full / Carbon Cermics / 6MT MPE / M Performance & Carbon package / KW v3 / 20" HRE R101LW / 20" HRE 527s / Michelin PSS / 20% tint / 3d Design / Streckenn splitters / OEM GTS hood / EAS Carbon seatbacks / Carbon RKP sideskirt / Bootmod3 / M Performance Tri color alcantara / AWE S Flow instagram: @ dubsesd
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02-25-2016, 04:55 PM	#4
yousefnjr salty cowboys fan 6158 Rep 3,407 Posts Drives: ‘06 Z4MR, ‘20 X7, ‘22 M4x Join Date: Dec 2012 Location: Bay Area, CA iTrader: (2)	Holy smokes I wonder how much $
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02-26-2016, 01:18 AM	#6
Vanne Down Under!! 1621 Rep 4,294 Posts Drives: 2007 Z4MC Join Date: Mar 2013 Location: Dubai iTrader: (4)	stroker kit!! __________________ 2007 EuroSpec Z4///MC - Building/Developing Z4 GT3 Powered by
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02-26-2016, 07:20 AM	#7
Digs Second Lieutenant 133 Rep 274 Posts Drives: Z4M Coupe Join Date: Apr 2015 Location: Perth, WA iTrader: (0)	That was nuts! And ear porn
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02-26-2016, 09:19 AM	#8
ga41 Lieutenant 31 Rep 503 Posts Drives: Z4 M Coupe Join Date: Jun 2009 Location: Paphos iTrader: (0) Garage List 2006 Z4 M Coupe [0.00]	If it really pumps out that much horsepower it's amazing! But the sound isn't anything special really, i bet it sounds much nicer in person though. __________________
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02-29-2016, 08:50 AM	#9
Westersund Captain 500 Rep 876 Posts Drives: BMW Join Date: Nov 2011 Location: Hallstahammar iTrader: (1)	The owner just clarified some thing about his build. It cost him between 25,500-30,200$ in todays exchange rate between SEK and USD (favourable for the USD). That includes all parts and labour. According to the tuner building the engine the stock engine is only spec'd to 8300 RPM, after that the the engine will wear FAST. So raising the rev limiter on a stock engine isn't a good thing in terms of reliability (but it will give you 20-25 more hp, for a while ). What also was said is that the CSL intake only flows slightly better than the stock intake, which apparently can flow nicely up to 480 hp. A tune will not yield much without a different cam shaft, unless you raise mentioned rev limiter and compromise the reliability and health of the engine. Most bang for the buck is a 296/280 cam shaft, which is the maximum duration the stock valve springs can handle reliably, and a tune and that will give you about 370 hp. That's what was said in the thread, so don't shoot the messenger. However I tend to believe someone who've spend more on the engine than the car is worth and the job was done by one of the best tuners (Köhler) in Sweden when it comes to NA BMW engines.
	Appreciate 2 Voockey16.00 Quote