Re: OK, Stocker "valve jobs".
 

Jim
How long is your valve? We didn't do anything exotic to use those springs and retainers.
If I have enough valves I will send them to you. We actually had shims under them for a while.

Re: OK, Stocker "valve jobs".
 

valves are 01-1101 and 01-1102 I don't remember if they are SI or Ferrera. They are 5.090 total length. Are you sure your checker is calibrated? We didn't do anything crazy to get them in there, We did replace the seats when we went to 30 degree. we used that combo in D5 and D7 heads.

Re: OK, Stocker "valve jobs".
 

Is my checker calibrated?? oh crap?

It seems on with stock springs but maybe ill see if i can compare it to another tester. Maybe thats my issue? Ooh that would be maddening, lol.

Regardless, im going to grab another head tomorrow just to see if its the same. No more cutting until i confirm the checker now.

Re: OK, Stocker "valve jobs".
 

Don’t give up you’re doing great. Good luck!

Re: OK, Stocker "valve jobs".
 

Thanks Larry, smashing away at it, lol.

Checked my tester and its about 10 heavy. Good news is, i picked up new springs and +.050 locks and combined with my moly retainers i think i got it. Just dropped it off and spent 10 minutes checking before taking off to town.
More to follow but i might be good����

Re: OK, Stocker "valve jobs".
 

Success!!

Between the +.050 locks and some moly retainers plus some shims i found from 30 years ago, i got it!

Break in pressure is 50 on the seat and 150 over the nose on all + or - 5#
Running pressure will be 110-120 on the seat and 265-270 over the nose
Once that was done i rechecked all the stem heights and found a couple too tall so i trimmed them about .020 on the 4-5 i had to adjust.

Next up was a way to check the springs on the head? cant find my checker so i made one that fits the rocker arm and a 1/4? drive torque wrench. By taking the springs on and off to confirm, i found 50? # is equal to 50? # on the spring. 90? is 90? etc.
Now i can confirm spring pressure on the car.

Another benefit to the tool is, i bolted the rocker arms down, then used the tool to compress the springs .400 or so and after using market on the tips i was able to (crudely) approximate where the rocker and spring contact. Almost all are a thin line on the stem but some are a little towards the outside which means the rocker arm is too high (or you have too long of a pushrod)
Obviously its not perfect, might of pulled too far or not far enough which would affect where it marks but generally it was pretty good.

Pulled the intake and heads off the car and now have to pull the front of the engine off to change the cam.

Getting closer!

Re: OK, Stocker "valve jobs".
 

Okay guys, I did some checking.
Yes, any valve job means just that.
Grinding the seat area on a valve is part of a valve job , so that's legal..at any angle.
Back cutting the area of the valve above the sealing angle,...legal, and part of "any valve job"
Reduced stem between the valve head and the guide .."Any valve job"
Cutting the sides of the combustion chamber away with your top cut... Yes, you guessed it.."any valve job"
Apparently , no modifying of the chamber refers to grinding or cutting in the plug area, and between the valves
Oh, and + or - 1 degree does refer to the fixed valve angle in the head...not what it used to mean. Of course angle milling a certain amount could put the valve at more than 1 degree different than the factory spec, but angle milling is legal.
Some of this sounds contradictory , but there it is.

I hope this helps a few racers that aren't familiar with reading between the lines of the rule book.

Re: OK, Stocker "valve jobs".
 

Now you tell me?.. lol!!!

Clarity is always good, most keep their cards near their chest, i throw them on table face up and say “I don’t know how to play, is this hand good”? Lol.

If i ever fail tech it will be because i didnt know, not because “ I know a speed secret” or even know how to “push the boundaries”.

Re: OK, Stocker "valve jobs".
 

Converting to a canted valve ok if angled towards a port is needed? May only be 2 degrees worth.

Re: OK, Stocker "valve jobs".
 

Jim, if you hang around long enough, you will find this statement from a previous post to be as true as rain.

Re: OK, Stocker "valve jobs".
 

No, ONE degree is all that's allowed. Wait until you try to get the rocker to comply ;).

Re: OK, Stocker "valve jobs".
 

If you installed the larger screw in studs to help stop some of the lift loss from deflection, a racer could regain the correct rocker valve angel relationship. I think

Re: OK, Stocker "valve jobs".
 

Not if you're trying to "cant" the valve - then the stud would have to also have the corresponding "cant". Think big block Chevy, the valves are angled AND canted.

Re: OK, Stocker "valve jobs".
 

This is a great post Billy. But i think most racers have no clue what we are talking about. Going to reply ,so not directed at anyone.

Re: OK, Stocker "valve jobs".
 

This started because i didn’t have a clue, either! Lol!

Re: OK, Stocker "valve jobs".
 

Well aware of BBC angel a cant of the valves. Spent a ton of money on a 68 427/ 400 project with 290 small plug heads. The car we got was from Wayne Shaw was a 69 350/ 350 car. I sold to John Livingston and he made the Tennessee Thunder car. NHRA made him change doors and put the key on the dash.
We enlarged the hole with an end mill to keep the tap drill from following the path of least resistance. And then spot faced the seat of the screw in stud.

Re: OK, Stocker "valve jobs".
 

[QUOTE=Larry Hill;698408] ...NHRA made him change doors and put the key on the dash....
/QUOTE]


Flash of nostalgia for when rules mattered and a car had to be correct for the year. Little things like a pushbutton door latch and location of the ignition switch were no doubt a total pita but before "close enough" grey areas. No, can't think of a single performance advantage but somehow I liked it better that way.

Re: OK, Stocker "valve jobs".
 

Certainly must have been far fewer first gen 350 and B B powered, as well as automatic transmission equipped "Z/28" Camaros running in Stock and Super Stock back in the "old days". I still remember when a buddy took his 69 Camaro 427/425 Super Stocker down to Pomona, and the tech guy made him remove the SS emblem between the tail lights, since that was a COPO combination. Or when if you wanted to run a 69 Mustang 428 CJ car as a GT rather than a Mach 1, you needed to use the GT only gas cap. Things have certainly changed!