valve seating

[n00blike]

I pull two of my vales off and was not sure if they were seating correctly.

does it look like i may need a valve job?

 

[ramcharger]

Yes you do. Those pits on the valve face and sunk seating area on the other valve face are dead giveaways. It'll run like that and I've seen much worse, but you're giving up cylinder pressure.

 

[n00blike]

what should i look for in a good valve job?
what should i ask the person to find out if they are competent to do it?

 

[green1]

3 angle. for about $200; that will chase out the a=holes.

 

[moper]

Look at the equipment first. If they use seat cutters rather than stones, ask how many angles they use. If they use stones, move on. Most performance shops are using at least 5 angles on thier cutters now and the high end equipment can cut a seat that is within .0001" of perfectly round and requires no lapping in. Expect to pay for quality work. Also, an easy way to get the best results is to replace the valves as those look rather haggard and stock.

 

[n00blike]

thanks for the great info guys! Ill give some shops around here a call on monday.

looking at the valves in the Mancini racing site. Is there an real need to go with stainless steel?

when they talk about multi-grooves are they talking about the grooves up top that help lock them right?