Yes, I went ahead and removed them...

 

Also to clarify, the valve clearance WILL change if you have sunken valve stems due to cracked retainers.

Like Bill said, now's the time to adjust. It takes maybe an extra 30 minutes, and then you know for a fact everything's within spec and your motor will be running the best that it can be.

EDIT FOR CLARIFICATION- Valve clearance WILL change if you have sunken valve stems due to cracked retainers and an adjustment had been done on said valves.

 

Hmmm...
Really?



A cracked retainer does not sit on the same position on the valve stem.
(that is why cracked retainers can damage the cam as thay can raise high enough to touch the rollers in the rockers and leave metal debris that will damage the cam, witout any indication in how the engine runs or change in valve clearance - as your buddy Bill has explained more than once)
IOW: valve clearance due to just cracked retainers stays the same and is no indiaction for cracked - or not - retainers.
Trick is: when you overrev with confidence, you bend valves so they don't completely seat and close lower and THAT changes clearance.
BIG difference though.

Oh... btw.. valves do not float long enough for rockers to come around and hit them on the head to crack retainers.
Old wifes tail.
Overrev = cam spins faster than valve can move up = cam slamms into seat unguided by cam = innertia damages retainer.
Simple mechanics.

Enjoy!

 

Valve stems do not sink.
Cracked retainers raise.

FUN
DA
MEN
TAL

difference.



edit:typo

 

Spitfire is correct, valve clearance does not change at all.

Valves do not sink. Spring gets longer, retainer gets higher. Keepers and valve stem position never change.

You could even do the valve adjustment first, and do the retainers after. Even though this is backwards, the clearance is not affected when you replace retainers, keepers, or springs.

Only camshaft, rocker, cam cap assembly, or the valve themselves will affect the clearance.

 

I
UN
DER
STAND



Don't talk to me like I'm some stupid uneducated person. I spent years in the Navy on Submarines as a mechanic, and before that I worked in various positions in the Automotive field. Relative to the retainer, valve stems DO sink. Glass half full/empty kinda thing. I understand that the retainer is rising. It's not rocket science.

If you had read what I posted, I was stating that I had a car that came to me where a valve adjustment was done on cracked retainers. Therefore making it invalid because the feeler gauge was contacting the tappet and the retainer rather than the tappet and valve stem. This is why is was NECESSARY to do a valve adjustment after changing out the retainers.

 

And relative to... a the piston of the same engine, while running?
What do retainers do relative to that?
Well.. first they sink, then they raise, then they sink again, and....
I'm sure you get my point, no sarcasm here.

When I talk about position of valves I relate them to the part they move in, which is the head.
And when I talk about position of retainers I relate then to the part they sit on, which is the valve stem.

I did see your post about someone checking valve clearance while the - cracked - retainer was raised.
But still you stated the valve dropped.

Maybe we should drop this?

 

from what i've seen at Supertech they say to use "prior to 2004 keepers" - so i guess those are AP1's...
if you put dual springs don't forget to use their spring seat.
unlike other vendors for some strange reason Supertech don't include seats in their kit.