924Board.org

[PeterW]

Ok, I'm trying to adjust the valve clearances on my 1982 924 Lux. According to the Haynes manual, one turn on the adjusting screw changes the clearance by 2 thousandths of an inch. Every time I try turning the screw, the gap closes up tight after about a quarter turn, even though I need to close the gap by 4 thou which should be 2 turns of the screw. What am I doing wrong?!

[924RACR]

You're not turning far enough. Follow the directions, keep turning, take the feeler gauge out while adjusting.

All will become clear once you're made the first rotation...

_________________
Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype

[PeterW]

Now I see! The adjuster locks off after each full turn. A bit annoying if you don't want to close or open the valve clearances by 2 thou at a time, but at least the engine doesn't 'tick' any more now I've adjusted them!!

Thanks,
Peter

[bacook]

That's right. Just when you think your wrench is going to snap, it'll complete the turn. The first time you do it is a bit worrying, but it's the design.

[larso]

yes the first time i took my head apart, i wondered why you would have such a stupid design, because the valves would get wrecked up by the threads...but the valves are really hard and don't get scratched.

[Joes924]

Yea I remember mt first time it does get tight and then snapps in .. wonderfull