MC camshaft profile specs

[Peter Berrevoets]

Lift and valve size would seem to have some bearing here yes?

I aslo seem to recall some talk/discussion regarding hydraulic valves
varying the lift/duration at various engine speeds. ie. lower lift and
duration at lower rpms - I think this may have been related to a specific
performance type lifter and not all hydraulic lifters in general.

my $ 0.02

Peter
1990 200TQ

> >-----Original Message-----
> >From: quattro-admin at audifans.com
> >[mailto:quattro-admin at audifans.com]On
> >Behalf Of Ameer Antar
> >Sent: Friday, October 13, 2000 1:40 PM
> >To: quattro at audifans.com
> >Subject: Re: MC camshaft profile specs
> >
> >
> >thanks much stephen...
> >
> >one more question for everyone:
> >
> >the KH is:
> >valve timing at 1mm valve and 0mm clearance
> >Intake opens before TDC   1.5 degrees
> >Intake closes after BTC    38.7
> >Exhaust opens before BDC  41.5
> >Exhaust closes before TDC  1.3
> >
> >>MC is:
> >>Valve timing at 1mm valve and 0mm clearance
> >>Intake opens before TDC   0 degrees
> >>Intake closes after BTC    41
> >>Exhaust opens before BDC  40
> >>Exhaust closes before TDC  1
> >
> >the intake seems longer on the MC, but is it true the ehaust
> >on the MC has
> >a shorter duration than the KH? If you just subtract the
> >closed value from
> >the open value it looks that way. Am I doing something
> >wrong? Why would
> >they make a shorter duration on the exhaust, yet longer
> >intake? How would
> >it affect my KH engine? Would it kill my torque? Thanks in
> >advance for any
> >advice.
> >
> >-ameer
> >