They are pressed in. Good luck.
2006-11-27 10:28:26
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answer #1
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answered by Silverstang 7
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How good a mechanic are you? You need to remove the head, - and take out the valves, Is this a car?? The valves should be in the head which is a fairly streight foreward project, - unless hou have the camshaft in the head too, then you have to Get the timing chain, - or belt off. Now you have the problem of keeping the crankshaft from being out of time with the camshaft!
Anyway after the valves are removed you need to take to a machine shop and have the valve guides "pressed out"-- (unless you happen to have a 10-or 15 ton "arbor press" handy!And have new ones pressed in! Then the valve seats need re-ground (to make sure valve sits exactly in center of area so valve will seat properly), - and then the valves need re-touched to make sure they are making good contact with the seats!
So normally the disassemble and re-assemble project could be carried out at home, but the machine work on the head should be done in a repair shop! This will save you quite a bit of money on labor anyway!
If you want to tackle the job, go get yourself a "Haynes auto repair manual", -- It will give you step by step procedure to remove and replace the head on engine, - it also has lots of illustrations that show you what you are looking for (for parts identification)! Just get the manual for our year and model car! --They run less than $20 most of time and places like "Auto Zone" have them (where I buy mone anyway)!!
If you are talking "motorcycle", the parts are a whole lot easier to work with, but the basic principle is the same, -- except most motorcycles have valves in block so you have to take some other stuff off to get there (but taking off the head is very simple!)
2006-11-27 10:49:23
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answer #2
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answered by guess78624 6
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guardrails answer looks pretty good but you should measure the top length of the guide before you remove it and you need to check the valve face contact before installing the valves - you can do this by using valve lapping compound and a suction cup made for that purpose at an auto parts store - they are cheap - if the seat contact area is to large ,off center you will need to have the seats cut and may need new valves - you will usually not need this if the engine has not been run to long with worn guides
2006-11-27 12:29:37
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answer #3
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answered by royjet3 2
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--Sure, if you know how. Here's how
--Remove the cylinder head
--Remove the valves & valve springs
--Remove the valve guide seals
--Heat up the cylinder head in your oven, or place it on a hot plate.
--When the head is hot enough, they can be tapped right out.
--Tap in the new ones
--When the head cools down so you can touch it, the valve guides then have to be "reamed".
Everyone willing to work on their own bike should own a shop manual.
http://www.motocom.com/motorcycles/
2006-11-27 11:21:09
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answer #4
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answered by guardrailjim 7
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if your riding a triumph or other british bike, heat up the head to around 250 degrees. or hot enough to feel through heavy gloves, usually about 45ec. of heat, prior to this put the new guides in the freezer for a couple hours. tap out the old guides, tap in the new ones. look in your manual, it will show you how to make a drift, make sure that you have the right size guidesfor the exhaust and intake.
2006-11-27 17:58:45
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answer #5
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answered by alwaysthinking 1
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Valve guides must be installed by a machine shop.
2006-11-27 10:32:16
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answer #6
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answered by michelle_greene_ragio 2
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if you know the depth , some people have had luck putting them in the freezer for a day or so and just tapping them in . how you get the old ones out is another story altogether
2006-11-27 10:35:55
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answer #7
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answered by sterling m 6
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