Valve guide seal replacement.

[grs]

Does anyone know what it cost to have a shop replace the valve guide seals. My truck smokes when I start it up. It does not smoke when it is running down the road. It is an 87 with a 305.

[Desert1957]

You can do it yourself with a few tools , some other tools you maybe able to rent (valve spring compressor).

The only real danger is making sure the piston is all the way up in its bore before taking the valve spring retainers and keepers off. you will need a good understanding of how to readjust ALL the valves properly to obtain proper lifter preload.

If you are not sure what I'm talking about ,you can use the search feature on this site to obtain most of the information you will need.

If you still can't find the info you need a lot of members here can walk you through it.

Here is a small list of tools you will need.
*basic socket set
*spark plug socket
*valve spring compressor
*small piece of rope to insert in the cylinder
(shop air compressor is preferred for this step)
*1 set of umbrella valve seals (16total needed)

Desert

PS: Can't imagine any shop charging less than $300-400 for this type of repair

[grs]

Originally Posted by Desert1957

You can do it yourself with a few tools , some other tools you maybe able to rent (valve spring compressor).

The only real danger is making sure the piston is all the way up in its bore before taking the valve spring retainers and keepers off. you will need a good understanding of how to readjust ALL the valves properly to obtain proper lifter preload.

If you are not sure what I'm talking about ,you can use the search feature on this site to obtain most of the information you will need.

If you still can't find the info you need a lot of members here can walk you through it.

Here is a small list of tools you will need.
*basic socket set
*spark plug socket
*valve spring compressor
*small piece of rope to insert in the cylinder
(shop air compressor is preferred for this step)
*1 set of umbrella valve seals (16total needed)

Desert

PS: Can't imagine any shop charging less than $300-400 for this type of repair

Why do I need a piece of rope? And thanks

[irishman999]

Originally Posted by grs

Why do I need a piece of rope? And thanks

you insert the rope into the cylinder so the valve cant fall in accidently when you take the keepers off.

[spencer_41188]

you can use a compression tester ... just take the valve stem core thats in it out and hook it up to compressed air and the air will hold the valves up as you compress the spring

i pen magnet will get the spring retainers and the valve spring will come off

i would go to an engine shop to get the valve seals because they come in alot of sizes and they can get you the right ones and there ushually cheaper then summit or jegs and when your there ash them what your getting yourself into they dont mind shairing knolage to do it your selvers

if your running solid lifters use a feeler gauge set the lash, if your running a cam use the specs on the cam if not ask the engine builder
if your running hydrolic lifters be shure to ask the engine builder how much preload to put on the lifter its gana be 1/2 turn to 1 turn from 0 lash