Re: Dual vs. Single Knock Sensor MC

[Erik R Addy <erik@aero.und.edu>]

John Corbishley wrote:
> 
> I seem to remember some time back that the brains trust indicated a
> preference for the single knock with water cooled K24 rather than the higher
> compression dual knock which I believe was fitted to the 89 & 90 200TQ.
> 
> Which is preferable for an Ur-Q upgrade?

The answer to this probably depends at least somewhat on your
priorities.
That being said, I have owned 200tq's with both motors (both in stock
and
chipped form) and would recommend you try and get the K24 model unless
you
are going to be going for over 250hp.  It has _far_ less turbo lag,
better
throttle response, and spins up quicker (lighter flywheel).  It seems to
pull well throughout the rev range.

However, they are probably harder to find and more expensive.  If you do 
get the MAC11/K26 model, I would suggest you consider a high flow
downpipe
form Graydon (assuming he is still selling them now that he has moved up
in
the world to V8 power :)).  These apparently do quite a good job in
reducing
turbo lag, and should help hi-end power as well.  2Bennett also has one
but
it is twice as expensive (Stainless, though).  No personal experience w/
either of these products, though.

HTH
Erik