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S65 4.6L Stroked and Bored Engine

$23,999.00$24,499.00

The CARBAHN Autoworks S65 4.6L stroked and bored engine is built around high performance camshafts, over-sized forged pistons, a forged crankshaft with increased stroke, and high-strength forged Carrillo connecting rods. The bore is increased to 94mm and the stroke is increased to 83mm.

We do a complete rebuild that increases power and improves durability with Clevite-Dinan racing rod bearings, CARBAHN Autoworks valve springs, an MLS (Multi-Layer Steel) head gasket, a valve job with new hydraulic lifters, plus timing chains, timing chain guides, timing chain tensioners and all associated seals and gaskets.

 

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Description

Steve Dinan has been building high performance and racing engines for BMW’s since 1977, winning 11 racing championships including 3 prototype championships and two 24 Hours of Daytona. The same engine shop that builds the racing engines also builds the street car engines; these talented engineers, machinists, and builders have built hundreds of engines from OEM street rebuilds to full-blown racing engines.

The CARBAHN Autoworks S65 4.6L stroked and bored engine is built around high performance camshafts, over-sized forged pistons, a forged crankshaft with increased stroke, and high-strength forged Carrillo connecting rods. The bore is increased to 94mm and the stroke is increased to 83mm. We do a complete rebuild that increases power and improves durability with Clevite-Dinan racing rod bearings, CARBAHN Autoworks valve springs, an MLS (Multi-Layer Steel) head gasket, a valve job with new hydraulic lifters, plus timing chains, timing chain guides, timing chain tensioners and all associated seals and gaskets.

Refer to the graphs below for the power results without catalytic converters on 100 octane race gas and using J607 (the typical aftermarket correction).

 

S65 4.6L Wet sump:

RPM TRQ HP
3500 373.4 248.9
4000 392.2 298.7
4500 393.9 337.5
5000 390.8 372.1
5500 399.0 417.8
6000 388.4 443.8
6500 382.4 473.3
7000 371.5 495.1
7500 358.6 512.1
7700 352.3 516.5
8000 337.4 514.0

No cats, 100 octane unleaded, J607

 

 

 

S65 4.6L Wet sump with street cams:

RPM TRQ HP
3500 354.7 236.4
4000 372.6 283.8
4500 384.1 329.1
5000 391.8 373.0
5500 400.2 419.1
5600 402.6 429.3
6000 395.0 451.3
6500 392.4 485.6
7000 377.4 503.0
7500 363.1 518.5
8000 346.9 528.4
8200 340.2 531.2

No cats, 100 octane unleaded, J607

 

 

Additional information

Engine Options

I-Beam Rods, H-Beam Rods

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Our team is always ready to help you in any way possible and we can connect you with the best products around. Call today and talk to one of our specialists about how we can upgrade and improve your BMW.


 

Steve Dinan - Engine Sales     (669) 223-0563

Stephen Freeth - Racing Services Specialist     (408) 622-1529 Contact Stephen

Sean Williams - High Performance Specialist     (650) 495-0421 Contact Sean