comparing 2 MC's

[Todd Phenneger]

I would concur,
  It definately sounds like it COULD be a KH.  Keep in mind
though that the KH also has a knock sensor.  ITs very similar to
the MC except that due to the 2.1l Disp, head that doesnt' flow
as well and a cam that is not optimal at High RPM the MC does
run much better at high RPM.  THe Free flow exhaust on the Sedan
will help that KH Rev up sooner and build boost faster, that
coupled with the Higher compression and a smaller K26 turbo will
definately make for a more responsive lower end.
  Just a htought though, it oculd be that one of hte cars has
the cam retarded or advanced one tooth.  First verify if you
have a KH or MC in the Sedan.  IF its an MC I suspect that the
car is off by a tooth.  Maybe from when a TIming Belt job was
doen previously.
Good Luck
  TOdd

--- auditude at cox.net wrote:
> Hi Stephane,
>
> Maybe your '86 really has a water-cooled KH.  Are you sure it
> has a knock sensor and such?
>
> If it is a KH, it would have 8.0:1 compression instead of the
> 7.8:1 of the MC-1, which would give it more off-boost
> response.  I don't know what boost the KH's run, but if it's
> also less then the MC-1, then that might explain what you are
> noticing.
>
> Or not.  :P
>
> Ken
>
> Livolsi, Stephane Stephane.Livolsi at investorsgroup.com wrote:
>
> <<I have a question for the tuning gurus amongst us.
> For the past 5 years I have been driving an 86 5kcstq, totally
> stock and
> just turned over 300,000 kms.  I did a lot of maintenance
> work, but no
> horsepower upgrades - the car is totally stock (ok, except for
> the high hp
> yellow pokemon stickers)
> Last month I bought a totally stock 88 5kcstq avant which has
> about
> 250,000kms.
> As I understand it, these 2 cars are pretty much identical in
> the engine bay
> - engine size, intake, ignition, etc.
> What I have noticed is that the 88 seems to have a bit less
> low end grunt
> and a whole lot more top end.  After about 3200 rpm it just
> rockets up to
> 6000 very easily and smoothly.
> On the other hand, the 86 seems to have a bit more pull at the
> lower end,
> and seems to peak out at a lower rpm - about 5000ish.
> As far as I know, neither car has had any modifications from
> stock that
> would affect the acceleration, etc.
> Does anyone know of any differences that might account for
> this?  Could the
> timing belt be moved over a tooth on one of them? would that
> account for it?
> Different turbos?
> Now that I think about it a bit, the exhaust on the sedan is
> not quite
> stock, it is stock diameter pipe, but the rear muffler is very
> free flowing.
> However, I would think that this would improve top end
> breathing and this is
> on the car that doesn't like the top end.
> This isn't a problem or concern, I just thought I'd throw it
> out there and
> get some opinions
> Thanks
> Stephane
>


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