Re: Differences kh/mc

[Sachelle Babbar <sbabbar@iris.nyit.edu>]

Way advanced compared to what? If it's the kh, give me numbers@rpms
because I have a factory intoduction book with maps in it that I'd like to
compare the mc's to. By the way,I'm running 2.1 bar, so I'll go out on a
limb and assume that I'm running the factory rated power numbers.

Steve
'84  5ksT 1.6-2.0 bar

Disclaimer:"Any information contained herein is based purely on my own
personal experience and may not necessarily reflect yours. Use caution as
your results may vary from mine."

On Thu, 5 Feb 1998, Orin Eman wrote:

> 
> > I was thinking about something. My kh is approx.2.1 liters.8.3-1
> > compression and 1.5 bar of boost stock. The 2nd gen mc had 7.8, 2.2
> > liters, and boost most qlisters say 1.3 bar. KH-140 hp stock. MC-158-162.
> > What are the differences? Why does the mc on less boost and compression
> > make more power? Is the turbo cam the same from the kh to the 2nd gen mc?
> 
> The MC max boost is actually 1.42 bar according to the computer maps.
> 
> The MC has a knock sensor allowing more timing advance.  There are
> other tweaks according the the articles, but this is the main
> reason for extra power.  The slight displacement increase is
> pretty much canceled out by the lower compression ration.
> 
> If you look at the timing map for the MC, you will see it is way
> advanced at 5500RPM, which just happens to be where they quote max power.
> (Yes, there is a distinct _peak_ in the timing map - about 6 degrees
> advanced over a smooth curve at this point.)
> 
> Don't expect the rated power unless you are runing very good gas.
> 
> Orin.
>