cylinder head refurb

[schakal]

do valves and tappets need to go back into the exact
slots they came from??


if so whats the reason for this ?

[col]

To be honest mate , yes......its the wear factor ,each item rubs an wears differently......its a safer policy to follow what you re furbin?

[schakal]

To be honest mate , yes......its the wear factor ,each item rubs an wears differently......its a safer policy to follow what you re furbin?

just curious as ,not refurbing anything

need more specific details .
you mean the valve stems wear differently or the back of the valves
mating the valve seats ?
what about when you fit new valves , are not the valve channels allready
worn down to the old valves??

[col]

If your replacin with new, no probably not,but if reusing tappets runnin in different holes they could stick.

Check the aluminium sleeve of each tappet an notice the different wear marks.
,

[busterhymes]

To be honest mate , yes......its the wear factor ,each item rubs an wears differently......its a safer policy to follow what you re furbin?

just curious as ,not refurbing anything

need more specific details .
you mean the valve stems wear differently or the back of the valves
mating the valve seats ?
what about when you fit new valves , are not the valve channels allready
worn down to the old valves??

re the fitting of new valves would always be a good idea to change valve guides at same time

[Wobba]

As above, new seals should be sorted. New tappets are about £60 off ebay.

If re-using tappets, should make sure you put them back in the same places as they wear a bit in different places depending on the cam etc. The tappet surface needs to spin freely as they get twisted with the cam action.

Don't forget to prime the tappets too a bit by squidging them about whilst submerged in oil. It helps.

[queegan]

valve guides are obscene amounts of money from renualt!

[busterhymes]

valve guides are obscene amounts of money from renualt!

maybe a part thats available through a good motor factors or even through an engineering company

[queegan]

motor factors i doubt very much maybe an engineering company i dont think u will get them through a motor factors because its such and internal part maybe wrong though. coz i tried a few places with no luck !

[col]

gaskets an seals from m,factors................but valves ,guides etc best to get from engine builders,motor engineering companies.

If you have new guides then youll need the valve seats to be re cut or ground.