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[humbucker]

refurbing some v6 heads at the moment. i need to remove the valves etc to replace the stem seals and clean up the valves themselves but i'm at a loss to work out how to remove the valves.

couldnt find a how2 so thought id ask for the equivalent in the form of advice.

just to mention, heads out of the car already.

[tunnie]

cam brackets are out then? I just used some locking pliers to pull each one out

[humbucker]

yes, heads are out of car, camshafts and camshaft shells have been removed, so just heads and valves/lifters present.

wanted to know how to remove valves when i've pulled lifters out of the way. also any tried and tested methods for removing lifters (some fall out others stuck firm)

what should i look out for or avoid doing? ta 

[tunnie]

i only took the cams out, never been down to valve level myself, sure someone else will be along shortly though 

[Marks DTM Calib]

The secret to getting the lifters out is to use the rubber sucker type valve lapping tool


If I could find my Post on Mick Dundees head re0furb, it has plenty of pics on valve removal etc

[tunnie]

The secret to getting the lifters out is to use the rubber sucker type valve lapping tool


If I could find my Post on Mick Dundees head re0furb, it has plenty of pics on valve removal etc

I never had a problem getting lifters out, even covered in oil, just got the groove of the teeth in the lockable pliers on the edge of the lifter, lock, and out it came.

[Marks DTM Calib]

The secret to getting the lifters out is to use the rubber sucker type valve lapping tool


If I could find my Post on Mick Dundees head re0furb, it has plenty of pics on valve removal etc

I never had a problem getting lifters out, even covered in oil, just got the groove of the teeth in the lockable pliers on the edge of the lifter, lock, and out it came.

Yes but, you dont ever want to risk damaging the faces or side of lifters as they fit in close tolerance machined holes

[humbucker]

i was going to get the valves out as i was considering a light skim before i put the heads on; theyre replacement ones and while they show no signs of HG failure i thought it better to be safe than sorry. thoughts on this?

tbh the valves look good and the heads look good i just didnt want to put them on and suffer hg failure somewhere in the not too distant after all the effort cleaning them up

[andyc]

If you want to remove the valves from the head you'll need a valve spring compressor
http://www.sealey.co.uk/popupimage.htm?Images/Products/VS154.V2.jpg
like this

Cheers
Andy

[Marks DTM Calib]

i was going to get the valves out as i was considering a light skim before i put the heads on; theyre replacement ones and while they show no signs of HG failure i thought it better to be safe than sorry. thoughts on this?

tbh the valves look good and the heads look good i just didnt want to put them on and suffer hg failure somewhere in the not too distant after all the effort cleaning them up

I have lost count of how many V6 heads I have seen and worked on....never seen one that needed a skim yet 

So, check them with a straight edge

[humbucker]

mark i dare say you're right. they look as flat as can be tbh and i'll check the mating surfaces over thoroughly tomorrow night. if the valves look good and the head looks flat is it worth removing them anyway for renewal of stem seals?  or best left alone?!

[JamesV6CDX]

The secret to getting the lifters out is to use the rubber sucker type valve lapping tool

Agreed - this works wonders for me

[Bent valve]

You are supposed to use a spring compressor to remove the valves, however I always screw up a rag and shove it in the combustion chamber then lay the head flat down on a timber surface (an old kitchen worktop is ideal) then place a socket on top of the valve spring and give it a tap with a 2lb hammer. This compresses the spring but prevents the valve moving down and the collets will just pop out.
 You will have to be  carefull not to damage the machined tappet bore, but it does save a lot of time when theres 24 valves!
You will need a compressor to refit them though. I have a specialy modified compressor to suit the v6 head. You are welcome to borrow it if you pay the postage

[espen22]

I think you should use the compressor tool for the whole job, hammering off the caps can cost you a head if you do not know how to:)
There is also a special tool with a magneto inside that is made for changing the valveseals without removing the head...
When you first take this job, regrindig the valves with fine valve grinding compound is a good thing to do.
I use to find me a rubber hose that i put on the valvepin, and i then can use a drill to rotate the valves

Mark if the valves and seats are totally clean and free of edges, this is not needed:)
And  mark the valves, if you refit one wrong without grinding it, you might get a leaky valve;)
I use a plate of hard paper, and put the valves in that as if it was the head so i know where each one belongs