Relph
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| posted on 5/4/15 at 04:04 PM |
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Cleaning carbon from exhaust valves
Hi guys,
I've got quite a lot of carbon build up on my exhaust valves and I've tried to remove it using a wire wheel but it hardly touches it.
Have you guys got any other methods of removing or dissolving carbon ?
Thanks.
If in doubt, flat out.
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ian locostzx9rc2
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| posted on 5/4/15 at 04:14 PM |
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Put valves in a drill and use very fine emery paper and wear a mask or use some egr / turbo cleaner .
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Dingz
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| posted on 5/4/15 at 05:13 PM |
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Gently by hand with an old hacksaw blade
Phoned the local ramblers club today, but the bloke who answered just
went on and on.
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avagolen
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| posted on 5/4/15 at 06:42 PM |
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I bought a new set - quicker & easier by miles..... 
The Answer for everything, but never the last word....
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Relph
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| posted on 5/4/15 at 09:53 PM |
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Cheers lads,
I put them in a drill and used some sandpaper.
Got the boring job of lapping them in tomorrow night.
Thanks.
If in doubt, flat out.
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Mr Whippy
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| posted on 6/4/15 at 11:40 AM |
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if there is a lot of valve wear and the valves are clearly old I'd recommend you just buy new ones as they'll seat so much better plus
most valves are quite cheap really. I use to spend hours doing this trying to reuse as much as possible but these days just buy new valves and get a
machine shop to do the initial refacing of the seats, it's like £50 plus they check the guides at the same time and then I just do the final
lapping them in. The results are so much better.
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