Valve stem oil seal removal and re-seating valves

[SpikeyJp_68]

Don't say give it to a machine shop, I wouldn't ask if I didn't want to do it myself

Anyway, what way do the seals come out ? I'd imagine they lift up with a pair of long nose pliers or similar but they seem fairly firm when I tried that. What's the best way to do it ?

- I have the valves & springs etc. Out of the head just need to remove the seals

Also, when reseating the valves, will I grind them in using the old seals or new ones or is it irrelevant ?

Many thanks in advance,

Regards

Edited November 29, 2016 by SpikeyJp_68

[00joeindastarb0]

You should be able to give them a little squeeze one way and then the other with the pliers and then wiggle them out. You'll get it down after a few.

Or they do actually manufacture special pliers specifically for the job.

Seat the valves either way, I lubricated the guide and seal when doing so.

[PaddyDoyle]

Make sure the guides arent wore out. Very common

[SpikeyJp_68]

You should be able to give them a little squeeze one way and then the other with the pliers and then wiggle them out. You'll get it down after a few.

Or they do actually manufacture special pliers specifically for the job.

Seat the valves either way, I lubricated the guide and seal when doing so.

That's spot on cheers mate

[SpikeyJp_68]

Make sure the guides arent wore out. Very common

I'll put a pic up of my valves tomorrow

Not the valves the guides

Edited November 29, 2016 by SpikeyJp_68

[00joeindastarb0]

You need to check the movement of the valve in the guide, I had to replace my exhaust side.

[SpikeyJp_68]

You need to check the movement of the valve in the guide, I had to replace my exhaust side.

Side to side movement ? Is it possible to replace them at home ?

[00joeindastarb0]

No it's a bit specialist really

[SpikeyJp_68]

No it's a bit specialist really

That's okay, I'll check them though

[5e colin]

Valve re seating is simple put paste on valve seat stick valve Al the way in atac rubber hose to valve end thick wall want very stiff 1 stiffer the betteru the other end in a brill on low rpm turn head over grease up finger gently push down on valve now start drilling 10 min.per valve the original 30min and more per valve

[SpikeyJp_68]

Valve re seating is simple put paste on valve seat stick valve Al the way in atac rubber hose to valve end thick wall want very stiff 1 stiffer the betteru the other end in a brill on low rpm turn head over grease up finger gently push down on valve now start drilling 10 min.per valve the original 30min and more per valve

I've bought a valve lapping stick, I've read it's not the best to do with a drill

[5e colin]

no bother to do with drill left right left right easy peasy much much much faster

i done many this way now you get used to it with great results

yopu will find out how sore your hands are going to get with the stick 30minutes times 16

[tommyep82]

I've lapped in valves loads of times by hand its a cunt of a job but has to done, if u get good at it 5min to 10min per valve should do it, use the corse paste first then the fine stuff, u will see a good even shine all the way round the valve seat when done, its an idea to check them with petrol when fitted as wel,

[00joeindastarb0]

It shouldn't take more than a few minutes on each one if the seats and valve faces are decent.

[5e colin]

It shouldn't take more than a few minutes on each one if the seats and valve faces are decent.

ha ha ha ha few minutes no chance man fully seating a valve by hands takes ages not in 123 its not becouse the valve looks shiny from the paste its 100% seated it takes keen eye

[SpikeyJp_68]

Only way to find out is to crack on and do it I suppose might give it a go tomorrow and see how I get on

[00joeindastarb0]

If it's taking more than 10 minutes on each valve something isn't right.

[AdamB]

Shouldn't take no more than a few mins. You not building race motors here lads!

Spend too long on it, you'll end up fucking the seat, which is an even more cu*t of a job.

[5e colin]

i wonder how long your minutes are lads its only a few minutes jobby with the drill by hand fuck no yal have supersonic hands or what ???

i fully seat my valves its not a 3 angle job with 1mm seat on our heads

Edited November 30, 2016 by 5e colin

[5e colin]

https://forums.anandtech.com/threads/valve-lapping.2194727/

[SpikeyJp_68]

5-7 minutes of actual grinding is what I was told.

I'll give one a go tomorrow starting with coarse ending with fine and go for a 1mm seat as Colin says.

I'll time it start to finish so from applying the coarse grit to removing the fine grit and I'll report back with pics and a time

[Phil]

I didn't take to long to do mine.

Maybe should have taken longer but haven't had any real issues

Phil

[SpikeyJp_68]

They've been seated.

Intake valves tool about 7 mins each start to finish as they were in pretty good condition anyway.

Seated V non seated

On the other hand, exhaust valves took about 15 mins a piece becuase they were quite badly pitted. I ended up doing 2 runs with coats and 1 run with fine.

As before, seated V non seated

Now they look like this !

Took about 2-2.5 hours in total and is quite therapeutic once you're properly set up for it haha

[5e colin]

2.5hours not bad attal

well worth it