valve removal and refitting.

[Bubba]

If I remove my valves do they have to go back in the same place? And is it worth me polishing them?

[Andy]

Yes its good practice for them to go back in same place,either stamp them or poke them thjrough some card marked 1-8/16.
Im sand blasting mine,then thouroughly cleaning them,thats it.

[Stuart]

dont sand blast them!!!! they will be slags to get the seat ground properly and you will screw the guides up with a rough surface.

[Bubba]

I did mark them :D mine will be hand polished

[swedge]

i put mine in a piller drill and used some carb cleaner and some scotch brite

[Andy]

dont sand blast them!!!! they will be slags to get the seat ground properly and you will screw the guides up with a rough surface.
What media would you suggest,i cant remember what we used at the engine shop i work experienced at (it was 12 years ago lol) but i definately remember blasting them.

[Stuart]

what rodney said.

OR buy new vavles since they are that badly ruined lol

[Andy]

what rodney said.

OR buy new vavles since they are that badly ruined lol
Nah theyre not bolloxed,just a friend has bought a blasting cabinet so was just going to abuse it while im there lol
What media would it have been do you reckon?? Just out of curiosity

[swedge]

very very fine if i was you, when you lap them back in it could take a while if you mark the valve seat part

lap them in like i did with a cordless drill lol

[Stuart]

you can buy lapping attachments that do the oscilation thing so you dont drill the valve into the head lol

probably coconut shell media... I hope.... or they were a cowboy outfit and just blasted with pea shingle

[Andy]

lap them in like i did with a cordless drill lol
Er no,i'd prefer to do it properly thanks!

[Andy]

probably coconut shell media... I hope.... or they were a cowboy outfit and just blasted with pea shingle
Thanks for that,i would have probably blasted them and royally fukked them.
Cheers

[swedge]

lol saved me time and worked perfectly, plus i had lost my stick with the sucker on it lol

[Andy]

lol saved me time and worked perfectly, plus i had lost my stick with the sucker on it lol
Theyre £3 including pots of fine and course paste! You will have used more than that in electricity lol

[swedge]

got plenty paste but im a lazy git and it worked for me

[Bubba]

800 and 1000 grit (used wet) then autosol'd

https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash4/402100_10150617413862845_717137844_11408366_140085 0428_n.jpg

[Riggy]

meh , good old hand lapping in

http://img.photobucket.com/albums/v13/riggy4/578c515b.jpg

http://img.photobucket.com/albums/v13/riggy4/c339cc66.jpg

had to clean the crud of the bottom of the vlave off with fine emery to get the stick to stick :thumb:

[swedge]

did you lose any collets? lol

everytime i do valves i always manage to drop a collet and spend an hour finding the thing

[TonySR]

I always use a bit of fuel/water hose and two jubilee clips when lapping valves in.

Removed spring and collets etc.
Attach hose to end of valve (leaving room to move valve up and down to add paste/clean) and other end to drill bit and tighten jubilee clips.
Put course paste on valve and lap away with drill power.
Clean paste off valve when theres no pitting left.
Lap with fine paste.
Repeat on all 8/16/24 valves.

It saves so much time and effort.

[Benn]

800 and 1000 grit (used wet) then autosol'd

https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash4/402100_10150617413862845_717137844_11408366_140085 0428_n.jpg

Very much how mine looked when i polished mine. But i used red scotch bright.