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> stroking a 4 cyl
ws91420
post Jan 25 2007, 10:49 PM
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Yes I have one a Lensley 914
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Looking to build a 2270. I know I know get a Jake kit.
I'm a bit of a rebel and want to go at it myself.
Stroker crank 78mm what else is needed.

is a longer cylinder need for the stroke
longer rods should I go chevy or type 4 rod journals
thinking about doing larger intake valves on the heads and using 40mm Webers
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McMark
post Jan 25 2007, 11:08 PM
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914 Freak!
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RANT You will be hard pressed to replicate the combo that will net you 175 HP easy ENDRANT

You need to pick up a set of 96 mm pistons. Longer cylinders aren't necessary and OEM German cylinders are best.

Type IV rods are weak. Best bet is Type I rods. But this means custom pistons. Which means you gotta know pin height, ring heights, etc.

Larger intake valves are fine. If you want your power to start a 4000 rpm and peak at 7000. Smaller valves keep the air flowing nicely and boost low RPM power, but you reduce top end power (top end can mean 7500 RPM, ie, no power loss for street motors). If you decide you want some large valve heads, let me know. I have a set I'll make you a deal on. (IMG:style_emoticons/default/wink.gif)
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