Quick question for anyone who may know regarding the short stroke 77.4mm crankshaft Audi had in the 2.0l 5 cylinders. Does anyone know for certain if the 77.4mm stroke crank, part number 034105021G is cast or forged?
I'm considering buying one for the de-stroked AAN I'm building instead of going with a custom billet crank from Jeff Gerner because of cost, but I'm not sure I want to bother if it's not forged because I'm not sure how a cast crank would handle 9000+rpm with boost dumped on top of that.
Any insight is greatly appreciated.
Crankshaft 034105021G
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Re: Crankshaft 034105021G
by Noisy Cricket » Wed Jan 10, 2018 8:41 pm
The images I've seen look like a casting. Very thin parting line.
Pete, that rallycross guy
'06 Volvo S60 R (Swedish GTR)
'84 RX-7 (bridge ported, fuel injected, way modified dirt buggy)
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'06 Volvo S60 R (Swedish GTR)
'84 RX-7 (bridge ported, fuel injected, way modified dirt buggy)
'86 QSW (MC2 goes here. Eventually.)
'81 RX-7 (restoration project)
'73 RX-3 (poor man's Mk2 Escort)
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Re: Crankshaft 034105021G
by dougkehl » Thu Jan 11, 2018 7:08 am
Thank you, that verifies what I determined as well from looking initially. I figured a second opinion or someone with knowledge on these would help me decide on what crank to use.
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