speed_demon24

iTrader: (6)

I had my heads ported by Lloyd earlier this year, and they have about 3000 miles on them. I had him port them, mill them, put in 2.0" and 1.6" valves, and put in new bronze guides. I'm in the middle of putting on new springs (changing out 918's to pac 1518's) and I noticed all of them seemed lose to me, but I have no idea whats acceptable or not. But now I just got to one exhaust valve, and it seemed VERY lose to me, so I set up my dial indicator real quick, and it has .020" play in it. Is this accepteable? Or am I going to have put pull my heads and have this fixed?

:edit:
I'm not sure if you measure the play at the valve tip, or the base, it has .020" of play at the top, or .013" of play at the bottom of the vavle stem.

GIZMO

iTrader: (8)

Did you check your rocker geometry when you put the motor together?

speed_demon24

iTrader: (6)

Yep its fine.

SincalT/A

iTrader: (16)

.001 to .002 between the guide and the valve stem.do not measure end play at the tip.the valve really should'nt move side to side at all.

Yeahdoug

Yep you want 1 - 2 thou of play. Which you really can't feel or barely feel, but the valve should move up and down nice a freely.

.020 is way too much

speed_demon24

iTrader: (6)

Here's a video showing the slop.
http://s86.photobucket.com/albums/k1...t=100_0363.flv

smoknta

I would say you have some serious issues there. Not only can you see the gap, but now that metal is in the motor.

ToxicTA

Looks like you will need to pull the heads to address this issue.

speed_demon24

iTrader: (6)

Heres a picture showing the geometry. I don't have the intake manifold off yet so I can't put in a solid lifter to check the wear pattern, but when the rocker is on the base circle of the cam it is prety much dead center on the valve. I should have the heads off sometime this week...
http://s86.photobucket.com/albums/k1...t=100_0364.jpg
http://s86.photobucket.com/albums/k1...t=100_0367.jpg