Valve seals keep popping

[onefast2gdsm]

So its been about 5kiles since my rebuild and ive had to change valve seals about 5 times. They keep popping off the guides. Also when i check the timing its always off a tooth after i realize the seals are bad. I rotate the motor 6 times and set perfect tension on it everytime i do the timing, so i dont know why it skips a tooth. Im running 25psi on a e3 16g, and i think the culprit is excessive crankcase pressure. Any thoughts?

 

[bastarddsm]

What cam's and springs are you running? Excessive pressure will not pop the seals off.

 

[bryanwheat]

You need to drive the seals on until they bottom out. There should be no reason for the seals to come off unless the guide is damaged some how. As for the timing. IF the tensioner is good and the tensioner pulley is adjusted properly there is no way for the timing to jump. When you released the tensioner pin were you able to reinstall it?

 

[onefast2gdsm]

I have brian crower 272/272 and brian crower stage 1 springs and titani retainers. I bottom the seal and out lube it before putting it on.

 

[onefast2gdsm]

Also timing grenade pin slid out easily and it had plenty of tension.

 

[BogusSVO]

Do the seals feel snug when you tap them on with a hammer?

If all you are doing is pushing them down with your fingers, you will not get the seal to lock onto the guide.

 

[onefast2gdsm]

I use an 11mm socket and push them onto the guide

 

[bryanwheat]

Are the seals all beat up? If the guides were not installed all the way than the retainer could be hitting the seal when the valve opens and damaging the seal, it isn't likely that the seal would come off the guide though.

 

[donniekak]

The valve guide, and inside of the seal should be dry. Some lube on the valve stem will be enough for the seal to not be dry. Also, they have to be tapped on with a hammer.

 

[onefast2gdsm]

What would cause them to pop. The car is at 26psi and i dont have a catchcan setup. The springs and retainers should be enough to preent valve float. Rev limiter is set at 7500

 

[nickk90]

Are you sure they are seated all the way? Just pushing them on with a socket isnt gonna do it, You need to give it a few hits with a hammer.

Do the springs make contact with the seals if so you will need to buy the seals with the small O.D. . Are the valve bent by chance thats the only other thing I cant think of

 

[Mr PopUps]

The springs on the 'top' are needed to keep them on, but require a decent amount of pressure to put on.