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April 2nd, 2008, 04:21 AM   #1
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Scratched Valve Stems

Hi everyone,
I'm in the process of taking my engine to pieces and have managed to put a couple of scratches on the inlet valve stems.
I was using a valve spring compressor, but it looks like I've scratched the stems whilst removing the collets.
I just clamped the spring compressor in place and wound it in until the collets popped out, but it looks like i should've 'shocked' them out of place using a hammer.
Valves and valve seats etc all look OK otherwise.
Can I lightly buff these scratches out?
You can feel a sharp edge when running your finger across the scratch and I think it'll wreck the valve stem seals if it's not fixed.
I'm planning on replacing the stem seals anyway, is it advisable to get new inlet valves too?
I'm trying to do dismantle the engine myself to save some £££, then put all the bits into my local mechanic to measure wear / tolerances etc as I've not got the equipment.
Anything which is still servicable will be going back into the engine, as I've not got a lot of £££ going spare at the moment.
Thanks in advance for any advice.
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April 2nd, 2008, 05:27 AM   #2
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RE: Scratched Valve Stems

you've got no choice but to make do with those valves: have you seen the price of new ones?

i suggest that you stick the tip up to the collet groove in a drill.

put the drill in your vice upside down so that the trigger is at the top. you'll note that your drill has a shoulder along the top that 'squares' it slightly so this will help.

i would then get some P600 'wet 'n dry' and quarter it then fold into 3 so it represents 4cm x 12cm strips (approx).

dip the paper in jizer and turn the drill on. then start rubbing the scrape down. you can put something flat inside the rubbing down paper. keep moving the paper and 're-angling ' it.

regards

Taffy
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April 2nd, 2008, 12:22 PM   #3
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Now normally I can interpret what Taffy is saying, but this one has me stumped! What the heck is a "jizer"?
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April 2nd, 2008, 03:03 PM   #4
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jizer is a degreaser brand name. swarfega? etc etc. i figured you bought it over there? oh well!

regards

Taffy
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April 2nd, 2008, 03:08 PM   #5
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I have plenty of degreasers, just never heard of that brand, I thought you were talking slang for a tool of some sort, which got me curious.
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April 2nd, 2008, 04:18 PM   #6
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Isnt Jizer like Varsol?
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April 4th, 2008, 04:23 PM   #7
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What's wrong with good old oil or even a bit of WD-40?
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