comparing 2 MC's

[auditude at cox.net]

Doh!  I was pretty far off.  Both with the c/r and the knock sensor thing.  I was thinking of an
urq setup.  I think those are less knock sensors and are 8.0:1 c/r.  Sorry about that. =)

I didn't think of the throttle body/intake manifold thing, but that would be a good way to
check.  I was thinking it would be hard, like if they put an MC intake setup on a KH, but I
guess they aren't that sneaky.

For sure there is different tuning within the major changes, such as MAC-10? vs. 11B or
11C and such.  That could account for the different feel as well.

Ken

Ameer Antar antar at comcast.net wrote:
>
> Just so no misinformation ends up in the archives, the KH motor has 8.3:1 c=
> ompression not 8.0. I think others have mentioned that the KH does have a k=
> nock sensor and the later KH's have watercooled (but smaller) turbos than M=
> C's.
> So maybe it's a KH stuck in an '86 body. One of the ways to tell MC and KH =
> apart is the KH comes w/ a round throttle body opening and the air temp sen=
> sor is in the intake manifold. I think the MC throttle body has a sort of p=
> ear shaped opening and the air temp sensor is in the intercooler.
> Another posibility might be the changes made from year to year. Even though=
>  the specs for the KH and MC are the same for each year there are slight di=
> fferences like extra parts, different tuning settings, etc. for each model =
> year. I'm not positive, and I don't have my Bentley here, but I thought the=
> re were different tuning specs for the CIS systems in the '86 and '88 model=
>  years, even though both are MC's. Same thing w/ the KH. There are a few pa=
> rts here and there that were added to the later KH's. I doubt this would ma=
> ke much difference, but just a possibility.
> -Ameer
> ---Original Message---
> From: <auditude at cox.net>
> To: quattro at audifans.com, Stephane.Livolsi at investorsgroup.com
> Subject: re: comparing 2 MC's
> Date: Tue, 26 Aug 2003 16:46:13 -0400
> Hi Stephane,
> Maybe your '86 really has a water-cooled KH.  Are you sure it has a knock s=
> ensor 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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