[Vwdiesel] Small displacement turbo

[pmdolan at sasktel.net]

In a Dasher, about the last thing I would do is reduce the stroke. 
 That is a lot more car than a bunny, and a 1.5 struggles at best to 
drag that around.  With a shorter stroke, you will need more cylinder 
pressure (and crank-rod load) to make the same amount of torque at the 
same engine speed.  I would ALWAYS opt for longest stroke possible out 
of a diesel setup (since the revs are so low) and let the turbo work 
the greater displacement without having to resort to exotic bits of 
hardware to contain cylinder pressures. 

BTW:  you really need to check in at vwdiesel.net - this is where the 
IDI crowd hangs out and there is a ton of experience and enthusiasm 
there.  You will find both DIY and commercial solutions to making the 
pump and injectors perform.  The hot tip for a turbo for your setup 
would probably be a VNT 15 as removed from ALH - IF you can control the 
gates (IMHO, needs to be done mechanically by boost to be the ultimate 
retrofit blower). 

On Sat, 8 Oct 2011 18:59:08 -0700, Brian and Ruth Decker  wrote:
Hi Folks;
>
>                 I'm on the finishing touches of putting a stock VW 1.6 turbo
> engine in my 1990 VW Fox. It's running good with a 9Q 5 speed but will be
> pretty awesome I think when I get it finished. 
>
>  I'm looking for some suggestions for a new engine for my 1981 Dasher Wagon. 
> I have always thought a 1.5 N/A was a better running engine than a 1.6. My
> thought  is to take my 1.6 turbo  block with its oil squirters and turbo
> pistons  and install a 1.5 shorter throw crank,. I would have  custom made
> lightweight rods made and while I'm at it make them short enough to lower
> the compression to perhaps 19 to 1 and therefore run higher boost ( along
> with an in intercooler).  Perhaps I can have an engine that gets great
> mileage when driven sanely and a lot of fun when driven hard. I know I'm
> crazy but perhaps some others have some crazy ideas that might help. One
> good thing about this engine is that except for custom Rods I have all the
> other parts. 
>
> Brian Decker
>
> Toledo WA
>
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