Valve clearance?

[my325ha]

About a week or so ago I asked about a ticking noise and i was wondering if I needed a valve adjustment. I decided to go ahead and do the vavle adjustment anyway since it is standard maintenance. I picked up two manuels from the car's previous owner, neither of them much good but still providing some information. Problem is, each manuel gave a different spec for the valve clearence, one said 0.25mm and the other 0.30mm when cold. I did the adjustment this morning at 0.25mm. Is this OK or is that to tight? What does everyone here set the clearance at?

[gorgeee]

i think .25mm is correct i think as i was gonna do mine today but when i got to car i realised it was warm as wife took it out
how did you find it after

[E30Adam]

0.25mm is correct, always make sure the engine is stone cold.

There's a full writeup in the articles section for info.

[Brianmoooore]

0-25mm is the correct cold clearance, 0-30mm is hot.
All mine get set to 10 thou. cause I'm to tight to buy a set of metric feeler gauges.
That is for the M20 engine by the way, M10 is slightly tighter at 0-20mm cold.

[my325ha]

i did the adjustment sunday morning and i hadn't driven the car since the night before so the engine should have been cold enough. I set the clearence to a tight 0.25mm. I think im going to do it again and set the drag a little looser. What kind of damage is caused by having them too tight?

[Brianmoooore]

Too tight will burn valve seats and wear cam, but I doubt that you've set them that tight.

[my325ha]

The problem with this and any presision measuring is defining "slight drag" I set them so it took so effort to move the feeler gauge. I think that might be a little tight so im going to check them again next weekend.