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[Webby the Bear]

Hi guys, hope you're well.

Ok, got two heads left from the rebuild. i'm going to remove the valves. Will they be hard to pull out bearing in mind they're bent? And will the carnage from ''when valve met piston'' have damaged the guides in any way?

Cheers

[05omegav6]

Nothing a tap on the stem with a suitable hammer drift won't move, assuming of course that they don't just fall out when the collets are removed

You'll be able to see/inspect the guides properly once the valves are out no point guessing before hand...

[Webby the Bear]

ok, magic, thanks Al ill post up pics when i can get them out when im in school next.

are a set of new valves (for both heads) expensive and do we suggest any aftermarket or is it genuine?

finally, skimming..... if i decided to get them skimmed is this going to cause a problem with compression ratios?

[Gaffers]

skimming isn't recommended on these heads unless absolutely necessary, and if it was I would consider new heads.  Taking material off the head face affects the bolts alignment in the V thus affecting the inlets.

Valves can be expensive from the stealer but 2nd hand should be reasonable, but make sure they are true

[Webby the Bear]

Thanks guffer. touch wood theyre not needed so i can take my time. ill check ebay out for valves

[omega3000]

Nothing a tap on the stem with a suitable hammer drift won't move, assuming of course that they don't just fall out when the collets are removed

You'll be able to see/inspect the guides properly once the valves are out no point guessing before hand...

Arrrrrrrrgh !! Collets

[Webby the Bear]

Nothing a tap on the stem with a suitable hammer drift won't move, assuming of course that they don't just fall out when the collets are removed

You'll be able to see/inspect the guides properly once the valves are out no point guessing before hand...

Arrrrrrrrgh !! Collets

hahahaha i remember that day!

i dont find collets bad at all. when you get in a rythm and youve got a spare 96 hours 

[omega3000]

Nothing a tap on the stem with a suitable hammer drift won't move, assuming of course that they don't just fall out when the collets are removed

You'll be able to see/inspect the guides properly once the valves are out no point guessing before hand...

Arrrrrrrrgh !! Collets

hahahaha i remember that day!

i dont find collets bad at all. when you get in a rythm and youve got a spare 96 hours 

Taking them out is no problem long as you dont drop them  Putting them back in is an art form , ask the collet master 

[Webby the Bear]

Nothing a tap on the stem with a suitable hammer drift won't move, assuming of course that they don't just fall out when the collets are removed

You'll be able to see/inspect the guides properly once the valves are out no point guessing before hand...

Arrrrrrrrgh !! Collets

hahahaha i remember that day!

i dont find collets bad at all. when you get in a rythm and youve got a spare 96 hours 

Taking them out is no problem long as you dont drop them  Putting them back in is an art form , ask the collet master 

not that bad..... lots of grease on the end of a thin flat head i thought the hbv you did was harder

[Darth Loo-knee]

The heads I have done on Omega's with bent valves haven't created problems with the guides I would suggest fitting new stem seals being honest (I would only fit VX ones) as the price of them far out weighs the stress of wishing you had done them at a later date

[Webby the Bear]

The heads I have done on Omega's with bent valves haven't created problems with the guides I would suggest fitting new stem seals being honest (I would only fit VX ones) as the price of them far out weighs the stress of wishing you had done them at a later date

Awesome. Thanks Daz, just remembering from when martin/symes did stem seals on steve's veccy..... the stem seals just sit on top of the guides, right?

[Darth Loo-knee]

Yeap. Can be sometimes awkward to remove... saw a pair once that looked like someone had used a chisel or something to remove them and mishaped the guides take your time putting them back on with a socket or something similar that fits over the top nicely of the stem seal should push them down without damaging

[Webby the Bear]

cheers mate... just one final question... due to the tight interferemce fit am I right in thinking that should the guides need replacing this has to be done by a shop that will heat the head up to expand so the guides can be knocked out easily? .... or is there a home way of doing it?

[Marks DTM Calib]

You can remove and fit guides yourself.

You can possibly also ream them to size yourself.

But re-cutting the valve seat is a different matter!

[Webby the Bear]

You can remove and fit guides yourself.

You can possibly also ream them to size yourself.

But re-cutting the valve seat is a different matter!

ok thanks mark. how much force do they take to come out?

what is reaming them to size? do i not just buy new huides and smack them in? also what depth do they go to?