Can the valve guides be replaced on an in-line 6 without pulling the head?
sorry for dumb questions and thanks.

R. Griffith

 

In theory, yes. In practice? That's another matter.

You have to remove the cam shaft, then you can pressurize the cylinders one
at a time, and remove the valve springs, then take the guides out and put
new ones in.



"Ralf" <xstream@highstream.net> wrote in message
news:10tjld94v9bj015@corp.supernews.com...
> Can the valve guides be replaced on an in-line 6 without pulling the head?
> sorry for dumb questions and thanks.
>
> R. Griffith
>
>

 

In theory, yes. In practice? That's another matter.

You have to remove the cam shaft, then you can pressurize the cylinders one
at a time, and remove the valve springs, then take the guides out and put
new ones in.



"Ralf" <xstream@highstream.net> wrote in message
news:10tjld94v9bj015@corp.supernews.com...
> Can the valve guides be replaced on an in-line 6 without pulling the head?
> sorry for dumb questions and thanks.
>
> R. Griffith
>
>

 

In theory, yes. In practice? That's another matter.

You have to remove the cam shaft, then you can pressurize the cylinders one
at a time, and remove the valve springs, then take the guides out and put
new ones in.



"Ralf" <xstream@highstream.net> wrote in message
news:10tjld94v9bj015@corp.supernews.com...
> Can the valve guides be replaced on an in-line 6 without pulling the head?
> sorry for dumb questions and thanks.
>
> R. Griffith
>
>

 

Ralf did pass the time by typing:
> Can the valve guides be replaced on an in-line 6 without pulling the head?
> sorry for dumb questions and thanks.

"The only dumb question is the one left unasked."

And yes, they can. But, you need something to keep the valves from
falling in. Either compressed air into the cylinder (leakdown kit
if you have one, or a long bit of cord you can pack in.

You can also rotate the engine so the pistons are up for the cylinders
your working on. Then use a bit of vac hose to hold onto the valves.
(don't use vicegrips it farks up the surface) ... I know someone who
did this then wondered why his new seals wore so fast. :/ amazing.

While your in there you might want to go ahead and replace the valve
springs. It's fairly cheap and the springs do weaken over time.
Also check the push rods/rockers for proper wear pattern.


--
-- DougW -- 93 ZJ 4.0 http://members.***.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!

 

Ralf did pass the time by typing:
> Can the valve guides be replaced on an in-line 6 without pulling the head?
> sorry for dumb questions and thanks.

"The only dumb question is the one left unasked."

And yes, they can. But, you need something to keep the valves from
falling in. Either compressed air into the cylinder (leakdown kit
if you have one, or a long bit of cord you can pack in.

You can also rotate the engine so the pistons are up for the cylinders
your working on. Then use a bit of vac hose to hold onto the valves.
(don't use vicegrips it farks up the surface) ... I know someone who
did this then wondered why his new seals wore so fast. :/ amazing.

While your in there you might want to go ahead and replace the valve
springs. It's fairly cheap and the springs do weaken over time.
Also check the push rods/rockers for proper wear pattern.


--
-- DougW -- 93 ZJ 4.0 http://members.***.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!

 

Ralf did pass the time by typing:
> Can the valve guides be replaced on an in-line 6 without pulling the head?
> sorry for dumb questions and thanks.

"The only dumb question is the one left unasked."

And yes, they can. But, you need something to keep the valves from
falling in. Either compressed air into the cylinder (leakdown kit
if you have one, or a long bit of cord you can pack in.

You can also rotate the engine so the pistons are up for the cylinders
your working on. Then use a bit of vac hose to hold onto the valves.
(don't use vicegrips it farks up the surface) ... I know someone who
did this then wondered why his new seals wore so fast. :/ amazing.

While your in there you might want to go ahead and replace the valve
springs. It's fairly cheap and the springs do weaken over time.
Also check the push rods/rockers for proper wear pattern.


--
-- DougW -- 93 ZJ 4.0 http://members.***.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!

 

Hi Ralf,
"Valve Guides" are an machinist operation, and done to an empty
head, clamped to a gig, as part of a valve grind.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Ralf wrote:
>
> Can the valve guides be replaced on an in-line 6 without pulling the head?
> sorry for dumb questions and thanks.
>
> R. Griffith

 

Hi Ralf,
"Valve Guides" are an machinist operation, and done to an empty
head, clamped to a gig, as part of a valve grind.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Ralf wrote:
>
> Can the valve guides be replaced on an in-line 6 without pulling the head?
> sorry for dumb questions and thanks.
>
> R. Griffith

 

Hi Ralf,
"Valve Guides" are an machinist operation, and done to an empty
head, clamped to a gig, as part of a valve grind.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Ralf wrote:
>
> Can the valve guides be replaced on an in-line 6 without pulling the head?
> sorry for dumb questions and thanks.
>
> R. Griffith