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How to clean cylinder head mating surface


Yawn

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My First Post (Newbie here)

I am replacing the head gasket of my 94 civic and I just want to know the best way to clean the mating surface (cylinder head & block). This is the first time I am going to do this kind of job on my car. I know I am not suppose to use any abrasives since head is made of aluminum. A friend told me to scrape it using using a sharp blade. Thanks in advance.

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after using the sharp blade, I can still see some marking of the old gasket on the surface. How am I suppose to remove these markings. I don't want to keep on using the sharp blade since I might damage the surface. Can I use something like paint thinner or acetone to remove these marking left?

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use thinner and a dish sponge with a scrubbing surface on one side. works good(minimizing the amount you spill into bottom end of course). if this still isnt getting it all off for ya , than use a scotchbrite pad with fast long strokes. also , the sleeves arent alluminum. so you can wirewheel them with a soft brass one and id recommend it for a nice new seal. just need good control over your grinder or drill as to not knick alluminum surface.

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should I clean both mating surfaces until they are shiny or some gasket marks left will be ok? I don't know if I should clean it up until no marks are left on the surfaces. I am trying to run my finger across the surface trying to feel any bumps and it seems it's pretty smooth even if marks are still present.

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Your name made me tired, Im out.

 

Good night.

 

lol. Not my name, it was your avatar that made you tired. I hope by the time you go online tomorrow you have the answer to my question.

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