Will I get better results if I adjust valve clearance like this, rather then the "normal" way between the rocker and valve stem?
Found this info here:
EDIT:
Also, what adjustment is optimal for best performance? E30talk seems to think 0.30mm is best. (which translates to 0.192mm between cam and follower)
You can do a google search for "m20b25 Ventileinstellung" if you want more info.
Found this info here:
Here is a really usefull tip!
if the head is not new the method described can often still result in the wrong clearance, this is because the eccentric usually wears a little hollow in the tip of the valve stem, the feeler gauge bridges this hollow and holds the eccentric above it so you end up with a much bigger clearance that you think and the engine still ticks
So a better way is to put the feeler gauge between the cam and the follower BUT!!!! you must then account for the rocker ratio and the setting should be only 007" or 0.16mm
This will work every time no matter how worn the eccentrics are and you should have a nice quiet engine again 8)
if the head is not new the method described can often still result in the wrong clearance, this is because the eccentric usually wears a little hollow in the tip of the valve stem, the feeler gauge bridges this hollow and holds the eccentric above it so you end up with a much bigger clearance that you think and the engine still ticks
So a better way is to put the feeler gauge between the cam and the follower BUT!!!! you must then account for the rocker ratio and the setting should be only 007" or 0.16mm
This will work every time no matter how worn the eccentrics are and you should have a nice quiet engine again 8)
Also, what adjustment is optimal for best performance? E30talk seems to think 0.30mm is best. (which translates to 0.192mm between cam and follower)
On M20 (320i, 323i, 325e, 325i), it has the valve clearance proved contrary to BMW specifications (0.25 mm) to adjust a little looser. i.e. 0.30 mm inlet and outlet side. This provides a more stable idle (especially when 320i) and some fuel zigere performance. The clickers the valves becomes barely noticeable louder, the measure is worthwhile in any case.
You can do a google search for "m20b25 Ventileinstellung" if you want more info.
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