question about lifter tapping

[Ben Swann]

Yes - the MC cam is a bit more aggressive, and makes a nice little upgrade in the 4kq KX in my experience.

I concur with the opinion that 10W-30 is not a good viscosity range for the I5 engines, especially the older ones.  I tend to use 20W50 Castrol, maybe 10W40 in much colder weather has provided good results.  I have found some generic brands of even 20W50 tend to "thin out" quickly.  I swear by the Castrol 5W50 Syntec for my positive experience over the years, and when trying something else - well, not so positive.

YMMV.

Ben

[Thanks to all that replied.  It looks like it could be a lifter issue.  I
have some that I can swap in tonight, or this weekend.  Another question
along this lines.  I have an extra cam out of a MC engine.  Would that make
a difference on my KX ?  I think that the MC cam is a little more
aggressive.   Anyone?

-N]