Replacing valve seal for 1966 383 with 516 heads.

[raull]

Hello

I was planning on replacing the valve seals on my 1966 383 engine.

I was given great advise here on smoking problems with my 383 engine. My vehicle is smoking at start ups. The compresion is good for that year & type of engine. I went to purchase the valve seals to have my friend of mine install em withought removing the heads. But the parts store (also machine shop) informed us that those valve seals for that engine were pressure install (don't have the locks on em), and he did not recommend replacing that type of seals but rather have the head machine to accept the locks as well.

I am not sure if this is true. Does anyone know or have an idea? What do you suggest?



P.S. Cuda Ken have not checked the compression recently will post it as soon as I get the chance to check it.

[Chryco Psycho]

replcing the seal with the stock type is still better than dryed out of broken seal in there now , you could have the heads machined for positive style seals But the heads will have to be removed to do that & then you may as well install the 1.81 exhaust valves & port them ... your call

[RD]

you are using the OEM umbrella valve seal correct?

sounds the machine shop is trying to get business off of you that you really do not need done.

If you plan on replacing the valve seals while the heads are on the car, make sure you get an adapter that pressurizes your cylinder so that when you remove the springs the valves do not drop into the cylinder bore.

[aifilaw]

you are using the OEM umbrella valve seal correct?

sounds the machine shop is trying to get business off of you that you really do not need done.

If you plan on replacing the valve seals while the heads are on the car, make sure you get an adapter that pressurizes your cylinder so that when you remove the springs the valves do not drop into the cylinder bore.

this can also be done with a plastic pen down the spark plug hole too...pressurized air route is not possible for some of us.

[RD]

you are using the OEM umbrella valve seal correct?

sounds the machine shop is trying to get business off of you that you really do not need done.

If you plan on replacing the valve seals while the heads are on the car, make sure you get an adapter that pressurizes your cylinder so that when you remove the springs the valves do not drop into the cylinder bore.

this can also be done with a plastic pen down the spark plug hole too...pressurized air route is not possible for some of us.

go buy a air compressor! hehe j/k

[cudaken]

 Just get Duct Tape to come over, he blows. Well I read he did. Sorry tape.

Use the stock ones for now. They are not the best, but will last for 50,000 miles.

Raull, there is a chances, seals alone will not stop all the smoke. Valve guids could still be worn. If it only smokes at start up, why mess with it? I would say by the compression readings you have a 75% chances the seals will fix it. If you are getting it done free or cheap and your friend turly knows what he is doing have at it. Just make sure he turly knows what he is doing. Nothing like a valve lock not installed right and  going bad to ruin your day and 383.

                       Cuda Ken

[raull]

Update

Took the car to my friend the mechanic. Forgot to ask him to check the compression, hopefully I will ask him tomorrow. Ok went to the machine shop to get an estimate on the heads, putting in bigger valves, porting, etc. He did ask for specific information I had no clue on. But thats another thread I might start at a later time.

I informed him on the umbrella valve seals. He did state that I could replace those, if I don't plan to use them for a long time, because there was a warning on those type of seals. The warning on those seals where that the seals have been tearing and dropping into the oil pan where the suction tube has been known to clogged up with those pieces restricting the oil passage. That was the warning that came out. I decided to go ahead and replace em as I got them really cheap. 

I payed $5 for 16 umbrella valve seals.
I payed $5 for a pair of valve cover (cork). 
My friend will charge me $45 labor. 

$55 total, I have not taken the valve covers to check them yet I hope there isn't anything I am not expecting in there.

P.S. The car smokes when I rev it up hard, either cold or warmed up.

[Runner]

P.S. The car smokes when I rev it up hard, either cold or warmed up.

reving the motor when its cold is a bad idea

[raull]

Great news got the new seals in Vehicle doesnt smoke. 
However the cold weather makes the vapor come out of the pipes like four to six inches of the exhaust pipes looks nice. I am happy with the car once again. thx all

[Chryco Psycho]

 

[cudaken]

 That is normal, heck where I live and cold 20" of vabor. Told you it was not junk


                           Ken