Any tips on cleaning valves?
Turbo Mini Forums

Ive never seen any valves as carbonised as this and even with some gentle scraping it still won't budge?

The inlets clean up no problem, only light carbon on them, but the exhaust valves seem to be a mix of carbon and calcium build up?

Sorry about the pics, wanky camera phone wouldn't focus.





Any tips, or if you could recommend some good cleaning jollop. Would be much appreciated.

Oh yeah the head is aluminium and coated the same around the exhaust valves aswell, as there a but more difficult to reach a suitable cleaner would probably best rather than relying on elbow grease, any recommendations for this aswell Lol!

Cheers

Matt

Edited by matty on 21st Mar, 2007.

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1/4mile in 13.2sec @ 111 terminal on 15psi

stick the valves in a drill then touch em with some wet and dry. thats hows i've done em in the past anyway.

I know what your saying but TBH mate, not sure if that will touch them, the carbon is really hard and will pobably rip the wet and Dry before cleaning.

Tried a soft wire brush in the chuck and held the valve against it, doesn't budge!

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1/4mile in 13.2sec @ 111 terminal on 15psi

Get an old hack saw blade and cut it square. Use the flat edge to scrap of the worse of it then swap to the wet and dry.

Even if you get the carbon off you'll need to have the valve's seat ground. Have them bead blasted and ground professionally. Just hacking that carbon off, and installing them back in the head is just plain stupid.

Here's a picture of a set of valves I did up. These were in VERY good condition but still needed a regrind.

Edited by Vegard on 21st Mar, 2007.

soak in oven cleaner i reckon would help soften it up.

Either that or get them fooking hot and it will all fall off.

angle grinder.

WWW.FORCE-RACING.CO.UK PLEASE CLICK HERE

i have come across this 1000s of times right.........................................

use P40 production paper firstley
then P80
then p180

if you want a mirror finish ?

320 wet and dry then use p600 you can shave in them

p180 is more than up to the job on the last pass

dont go up the shank on the valve more than the carbon build up

Edited by BENROSS on 21st Mar, 2007.

Hi,
I cheated and dumped the wholw head in a vat of carbon dissolving liquid at my local engine builders
Mind you it still took a 24 hour soak to get it off!
Cheers,
Gavin :)

VEMs Authorised Installer / Re-seller. K head kits now available!

WB/EGT gauges. Click here for customers write-up

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My Mini build diary

you could aleays buy 4 new shiney ones, for not a lot of money,

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Ah cheers for all the replies, not sure which method to try first now. Lol

Have easy access to oven cleaner...Gavin do you know what that carbon cleaner is called and where its available, if its ok to use on aluminuim that would do for the head. :)

Will probably finish with wet and dry, as I want them blinging, still got some sanding discs from my respray so thats all good. Do you think P500 is a bit overkill?

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1/4mile in 13.2sec @ 111 terminal on 15psi

try the swarfega degreaser you can get in halfords in 5-litre bottles. i left some valves to soak in it over a few nights and it chewed the carbon right off, had same problem as you!

turbo 16v k-series 11.9@118.9 :)

Denis O'Brien.

matty, dont spend your hard earned money

PLEASE! USE!! the guide i have given you buddy

TOP results and you have all the scrag ends of paper lying around

Then use the couple of quid, fiver say youve saved

to spend or add to something else you want.

Edited by BENROSS on 22nd Mar, 2007.

use a HAMMER!!!!

angle grinder with a wire wheel will remove any carbon no problem.

and be shiny to boot

always looking for them bigger bunches of bannanas

CILLITBANG!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Hi,
Wouldn't just that stuff, the guy keeps SHOUTING at me! Grrrr.
Cheers,
Gavin :)

VEMs Authorised Installer / Re-seller. K head kits now available!

WB/EGT gauges. Click here for customers write-up

Visit www.doyouneedabrain.co.uk

My Mini build diary

Ah of course...how could I forget of ol' Bazza's Cillit Bang.

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1/4mile in 13.2sec @ 111 terminal on 15psi

LOL @ Jon F

ITS MY OLD FAVORITE!!