Valve seal supposed to "snap" into place?

[tsidrift1]

I have the new motor running and it has been running good. I have about 750 miles on it now. I have started noticing smoke at starup and at idle. It has gotten worse and worse. I finally started to disassemble the top end tday to change out the valve seals. I thougt it would be rare to have bad valve seals with a new rebuilt refreshed head at 750 miles. Well i go to pull off the firts spring and I noticed that all my exhaust valve seals are pushed up to the top by the top of the spring. I took it off and then went to pull the seal off and it slides right off then I went to push it back on and noticed that it snapped into place. Is that what the seals are supposed to do. Are they supposed to snap into place? If so, do you think I should just slide all of them back down towards the bottom and snap them into place and be done with it? Or should I just replace them now, since the others have basically been riding along with the valve stems and have been leaking.


Let me know,
Anthony

 

[EagleTalonTim]

to be safe, i would go ahead and replace them. They snap right in if you use a 10mm to 12mm socket to tap them in place.

 

[ekanddsm]

are you going to remove the head to replace the seals, I took out the spark plugs, fed some rope into the cylinder and then slowly rotated the engine over till it held the valve in question tight against the seat. then went to work on the seals. just 2 cents worth

 

[daren_p]

Since you have it all apart anyways, I'd just replace them as if they weren't inplace like you said, they may have been damaged. They should snap down in place, when I did mine I used a socket & small hammer to tap them into place.

 

[tsidrift1]

I went ahead and replaced them all today. the new ones I got were a harder plastic. the ones I pulled off of the head were a soft rubber kind. Anyway, none of the exhaust seals were down towards the bottom of the seat. I had only three intake seals that were actually snapped into place. I put them all on with a deep well 12mm and pressed them into place till they couldnt go anymore. I hope everything works out ok. I did use the rope trick and it worked great.

Ill keep ya posted.
Anthony