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Graeme

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63 Posts
Member #: 264
Advanced Member

Southampton

15th Nov, 2004 at 12:54:29am

Im currently rebuilding an 1987, 65k turbo engine

Whats the best way to remove the deposits of coke(carbon or whatever it is) off the valves. Can i just use emery paper/cloth or is there a magic chemical is can use which will disolve this crud?

Thanks

Yes, Im getting there.....

www.itsmuckingfagic.com

Nick
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4828 Posts
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Post Whore

Midlands

15th Nov, 2004 at 03:07:13am

i just use a wire brush in the end of me drill

On 20th Oct, 2015 Tom Fenton said:
Well here is the news, you are not welcome here, FUCK OFF.

Vegard

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7765 Posts
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I pick holes in everything..

Chief ancient post excavator

Norway

15th Nov, 2004 at 09:21:45am

Get them bead-blasted while you have them regrinded.

On 13th Jul, 2012 Ben H said:
Mine gets in the way a bit, but only when it is up. If it is down it does not cause a problem.

sim_ou_nao

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362 Posts
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Porto/Portugal

15th Nov, 2004 at 07:34:20pm

I use "White Spirit"

Pedro Silva

http://miniciados.blogspot.pt/


BENROSS

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9812 Posts
Member #: 332
Resident Cylinder Head Modifier

Mitsi Evo 7, 911, Cossie. & all the chavs ...... won no problem

16th Nov, 2004 at 05:50:11pm

what i use and have done so for many years is put the valves in a elec hand drill spin them up, then use somp P40 grit paper to take the worst off, then use p 80 grit, then say p180 working my way down the papers i find this enough, but if you wish you can use say 320 wet dry to give a nice polish to finish with.
only go up the shank of the valve about 10mm max you dont want to score the stem. also be carefull of the valve seat dont go over the top there.

have fun
regards
BENROSS:*happy*






Graeme

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63 Posts
Member #: 264
Advanced Member

Southampton

17th Nov, 2004 at 12:22:50am

Thanks alot guys, I had thought of using a hand drill but wasnt sure if it was a big no no.

I will give them a nice polish tomorrow!

Yes, Im getting there.....

www.itsmuckingfagic.com

AlexF2003

5795 Posts
Member #: 80
AFRacing LTD

Newbury, Berks

17th Nov, 2004 at 09:14:42am

its a good idea to wrap the valve stem in electrical tape or somthing so that the drill chuck cant damage the stem.

alex

AlexF

Vegard

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7765 Posts
Member #: 74
I pick holes in everything..

Chief ancient post excavator

Norway

17th Nov, 2004 at 10:13:54am

Remember to have the valves recut EVERY time they are out of the head. It's silly not to, as they wear sufficient not to seal after 10000miles.

On 13th Jul, 2012 Ben H said:
Mine gets in the way a bit, but only when it is up. If it is down it does not cause a problem.

BENROSS

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9812 Posts
Member #: 332
Resident Cylinder Head Modifier

Mitsi Evo 7, 911, Cossie. & all the chavs ...... won no problem

18th Nov, 2004 at 10:48:47am

Vegard: i have never come across the actual valves been cut ?
i usually ditch these if the seats are totally knackard and fitt new ones, did you mean the valve seats on the head? my friend.

regards BENROSS:*smiley*
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