Re: stroker cranks

["Randy B" <sirocco@telocity.com>]

Scott,
That would be 82.5mm bore (stock 2.0L 16V - 9A) and 95.5mm stroke right?
You are correct the 95.5 is the crank (forged BTW) from the later TDI VW's.

Formula
Displacement = (pi) X (Bore) X (Bore) X (Stroke) X (# of cylinders) / (4) X
(1000)

Soooooooo..........
(3.1416)X(82.5)X(82.5)X(95.5)X(4) / (4)X1000
 or
8168120.73 / 4000
or
2042cc

If you are going through all the trouble you might as well go with larger
pistons as well 8^D

83mm bore / 95.5mm stroke = 2067cc (largest cast piston size I believe)
83.5mm bore / 95.5mm stroke = 2092cc (Autotech's stroker kit - forged
pistons)
84mm bore / 95.5mm stroke = 2117cc!!! (what I am considering :^) - forged
pistons)

Don't forget, you will get more displacement from a larger bore than you
will from an equal # increase in stroke.

HTH

Randy



----- Original Message -----
From: "Scott F. Williams" <sfwilliams@home.com>
To: "Scirocco List" <scirocco-l@scirocco.org>
Sent: Wednesday, November 07, 2001 6:20 PM
Subject: stroker cranks


> Here's a question for yuz:
> 95.5mm crank + stock 2.0l 16v motor = ??? cc displacement?
>
> Also, in an otherwise stock motor, is the compression ratio changed? I've
> gotta learn this engine internals stuff next...
>
> P.S. The 95.5mm crank is from a TDI or some other diesel, correct?
> --
> Scott F. Williams
> NJ Scirocco nut
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