Please be careful when answering peoples technical questions that you do not misguide them into taking inappropriate action.
Not only is this annoying, but it can also be costly and could even be dangerous if the wrong information is given.
This is why we ask that only first-hand and factual information is posted in reply to peoples queries.
If you are not 100% certain of your reply, be sure to point out your uncertainty.
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Mar 9 2010, 10:28 PM
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#1
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Passed Test ![]() ![]() Group: Members Joined: 20-February 06 From: Worcester |
Just a quick question, Have removed the head to change the gasket, the piston's have alot of carbon build up on them, can somenoe tell me the best way to get rid of it? Didn't fancy a wire attatchment on my drill, just in case i damaged the bores in the block. What chemicals work best? Cheers Rob. |
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Mar 9 2010, 10:32 PM
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#2
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Mini Mad ![]() ![]() ![]() ![]() Group: Members Joined: 25-August 09 From: Tamworth Member of a Local Club?: nope |
I'd just CAREFULLY scrape off the big lumps. Leave it round the edge of the crown as this helps to form a better seal in the bore
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Mar 9 2010, 10:37 PM
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#3
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Passed Test ![]() ![]() Group: Members Joined: 20-February 06 From: Worcester |
Cheeers James, wil give that a go!
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Mar 9 2010, 10:38 PM
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#4
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Super Mini Mad ![]() ![]() ![]() ![]() ![]() ![]() Group: Members Joined: 9-February 08 From: Kent |
Smear LM grease (brown stuff) around the edge of the piston between piston and bore before you do this, so any carbon can be wiped out and doesn't land on the rings.
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Mar 9 2010, 10:40 PM
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#5
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Mini Mad ![]() ![]() ![]() ![]() Group: Members Joined: 25-August 09 From: Tamworth Member of a Local Club?: nope |
No problem, There will almost certainly be better ways of doing it but thats just a quick easy way of getting the job done!
Something else that might be worth doing if there is a lot of carbon build up, is to 'lap' the valves in so they form a better seal when they are closed |
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Mar 9 2010, 10:48 PM
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#6
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Passed Test ![]() ![]() Group: Members Joined: 20-February 06 From: Worcester |
All the valves have been lapped and head face skim by Chris @Smart, excellent job too! |
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Mar 10 2010, 12:19 PM
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#7
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Mini Mad ![]() ![]() ![]() ![]() Group: Members Joined: 2-April 09 |
When I was a lad we made a scraper out of an old toothbrush, cut the head off at an angle and use that. Being plastic it is unlikely to damage the piston crown.
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Mar 10 2010, 03:09 PM
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#8
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Speeding Along Now ![]() ![]() ![]() ![]() ![]() Group: Members Joined: 18-December 09 From: suffolk |
i had this couple weeks ago an i was told by my grandad to use distilled vinager soak the bores an it brakes up the carbon an then i just wiped it all out with a tissue then obviosly done an oil change it mine seem to be fine an the pistons came up like new
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Lo-Fi Version | Time is now: 31st July 2010 - 07:13 PM |