Took about 3 hours, wasn't that hard...

I bought the car with about 57k on it, it now has about 68k... 5 of the 8 Exhaust valves were WAY tight.. Like SET at .003 or .004. If I understand correctly, valves usually loosen up over time, not tighten-- so the last person who did a valve adjust didn't know what the hell they were doing, yeah?

How likely is it that I burnt an exhaust valve?

No smoke, good compression... Idle was getting progressively rougher though.

Haven't started it up yet tonight, will give idle / driving impressions tomorrow.

Thanks

 

If the valves where burned the engine would have low compression test #'s, fail a cylinder leakdown test, and run like crap.

 

The only way this could be possible:

-Previous guy screwed up the adjustment

-Be sure you are measuring in the correct spot, and the cams are set in the right place per cylinder.

I've done close to 200 s2ks, I think the tightest exhaust valve I ever found was .009

 

Guess I have to go with, previous guy screwed up adjustment.... Runs like a dream now, just feels smoother and more powerful.

I've adjusted valves before and defintely had the cams in the correct posistion, as well as measured in the right place... So I'm not sure what gives...

 

on the subject of valves, what did you distinguish what a slight drag was?

 

It's between too easy and too hard... I use the next feeler up as a no go. From what I can tell most people tend to go tighter, so I followed suit and had the feelers near to no go, very heavy drag.

 

I might be mistaken, but what happens when the valve seats were out? Would not the clearance be tighter?

 

Sorry, the previous post was supposed to read "wear out" and not "were out".

 

correct...as the seats wear, the clearance becomes smaller, theoretically.

As for your typo, you can just click the edit button on your post, and go in and fix it up

 

I've only done about 10 or so, but I've also never seen valves adjusted too tight. More often than not, there are some exhaust valves adjusted too loose.

I know you said that you adjusted in the right place, but adjusting valves on the F20C is different than some other Hondas. Just to be sure - did you adjust between the valve stem and the adjustment stud, or between the cam lobe and the follower?