ZRP-USA Stroker Crank - Experience?

[02TurboMI]

I'm looking for a stroker crankshaft for my M10 Turbo build and came across ZRP-USA. Does anyone have experience with this brand? Or would you guys recommend an alternative stroker crank?

 

BMW M10 2002 / Stroker S14 Billet Crankshaft

ZRP-USA.COM

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The ZRP crankshaft for BMW S14B20 is manufactured from aerospace grade 4340 solid billet steel and no compromises have been made to the quality of the material, in order to ensure the best possible pr

 

[TobyB]

My thought is that if you're going forced induction, 2 liters is a lot, and the stock crank is very stout.

 

Beyond that, not much...  

 

t

 

[Zak]

49 minutes ago, TobyB said:

My thought is that if you're going forced induction, 2 liters is a lot, and the stock crank is very stout.

 

Beyond that, not much...  

I agree. The stock pre-77crank is forged and surface hardened. It's not cast like most later BMW cranks. Leave it 2.0L and save yourself $$$. And, hunt down a stock pre-77 forged 2.0L crank in "Standard" size, not reground.

 

Forget about the "Americana" "Stroker" hot rod concept. The 2.0L already has a long stroke. Why make it longer ? If you keep increasing the stroke, you'll end up with a truck engine.

[2002iii]

First your link is to a crank for a s14b20 with a 80mm stroke that's the same as an m10b20, so not a stroker crank.

 

I would spend my money on a better turbo before a stroker crank.

[williamggruff]

I suppose if you're gonna stroke it, might was well stroke it to the moon:

 

BMW 2.5L M3 S14B25 Stroker 2.6L Billet Crankshaft

ZRP-USA.COM

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The ZRP stroker crankshaft for BMW M3 S14B25 increases the capacity to 2.7L (95.0mm x 95.0mm). This is manufactured from aerospace grade 4340 solid billet steel and no compromises have been made to th

 

[tzei]

I bet there is a lot of metal work to be done until that turns over with rods in M10 block.

[TobyB]

Quote

The stock pre-80 crank is forged

 

as far as I've seen, even the 1.8i crank's forged, it's just not as evenly balanced.

 

t