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ZRP-USA Stroker Crank - Experience?

02TurboMI
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02TurboMI Community Regular

02TurboMI

Posted
Posted

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?

 

C-BMW-001_1200x630.jpg?v=1622084982

6554b6be8c0d829a8bf63ae0c82cf121_link.pn BMW M10 2002 / Stroker S14 Billet Crankshaft

ZRP-USA.COM
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

 

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TobyB Grand Master

TobyB

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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

 

"I learn best through painful, expensive experience, so I feel like I've gotten my money's worth." MattL

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Zak Collaborator

Zak

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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.

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williamggruff Grand Master

williamggruff

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

 

C-BMW-003_4565086f-baf4-469d-bbf0-7df239

6554b6be8c0d829a8bf63ae0c82cf121_link.pn BMW 2.5L M3 S14B25 Stroker 2.6L Billet Crankshaft

ZRP-USA.COM
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

 

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williamggruff

'76 2002 "Verona" / '12 Fiat 500 Sport "Latte" / '21 Toyota 4Runner TRD Off Road Prem “The Truck”

 

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TobyB Grand Master

TobyB

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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

 

"I learn best through painful, expensive experience, so I feel like I've gotten my money's worth." MattL

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