0.03mm inlet valve clearance

Gregger said:

Inlet valve clearance should be between .10 and .15 mm. That's .004 to .006 inch. .03 mm is close to holding your intake valves open which will cause problems. You still have some clearance but those shims need to be changed. If you have your cams removed, I'd recommend removing all the shims and measuring them. Saves doing it in the future.

The valves don't appear too bad. A bit of carbon build up on one. So long as you still have compression, the seats haven't been compromised. Adjust and move on.

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bebsy said:

Thanks alot for that mate I will put my spanners down for the night I had my own head fried thinking I'd have to change them, is there anyway I can clean that carbon off the valve maybe? I forgot to mention the plugs were healthy when I to them all out I guess is a good sign.

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Jvheli said:

I would shim to spec, check compression and call it a day.

You are not doing anything good by attempting to clean coking without a full disassemble. What your seeing isn’t out of the ordinary, it looks quite good to me.

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TURBO200R4 said:

how many miles is on your rocket

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bebsy said:

Copy that thanks... A word from the Wise if the specs are 10 to 15 and 15 to 20 we're do you think the best spot would be for shimming bearing in mind inlets have run tight and exhaust loose if that's a path they are on?

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bebsy said:

Mine has 24,000 miles. Hate to share this but this is what prompted me a friend of mine with similar miles on a 2005 threw an inlet valve into the cylinder last week luckily at a slowing pace.

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