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Old 10-23-2012, 06:44 PM
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Painting underside,firewall,chassis,exc

Im restoring a 79 z28 i have the motor and trans out rebuilding them and i dont want to install them until i paint underside of the car along with the firewall and chassis components. Anyways my question is how to go about doing this. My thoughts were to sandblast to bare metal, using something like por15 then a top cote of por15 chassis black. Is this overkill because theres hardly any rust just a bunch of old paint. Would i be just as good to clean really good like wire brush every thing, degrease and spray with a good cote of chassis paint. I dont think i want to use rubber undercote or bedliner spray i just want something that looks neat and clean and prevents rust and long lasting.

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Old 10-24-2012, 04:48 AM
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The most durable finish I've found is to use a good epoxy
primer then cover with a urethane paint.
Looks great and is really tough.
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Old 10-24-2012, 04:57 AM
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If paint that is under there is solid, I would not strip it......Scuff it and prime/paint over it.
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Old 10-24-2012, 07:52 AM
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Yeah, I wouldn't dream of stripping that paint. Sand it and epoxy prime it and paint it. If you want it a satin color or non gloss, the urethane is difficult because it does't flatten well, it may have spots with different gloss. In that case an enamel with flattener works well.

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Old 10-25-2012, 06:57 PM
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has any one used eastwoods chassis paint they have a chassis epoxy primer and the chassis paint would they work well over the old paint if its scuffed and clean also do i need any of the rust preventive paint stuff or just prime and paint
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Old 10-25-2012, 10:21 PM
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I've never used the Eastwood product so as far as quality, ease of application and durability I can't comment. I will say that any quality epoxy is the key, as mentioned, if your original substrate (existing paint) is good give it a good scuff and paint, no need to sand blast. The other thing you'c got going for you here is the fact that the areas are all covered, under the hood and chassis don't get a lot of sun so in closing the most important information is the information on the epoxy. I'm sure Eastwood has tech MSDS (Material Safety Data Sheets) on this product. Post them and I know a bunch of guys can help.

Best
Ray
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Old 10-25-2012, 10:52 PM
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I find the best methond is to blast the areas that have surface rust and epoxy them or get a can of Rust Encapulater from Eastwood prior to paint. Not only does it remove the rust better it is also faster then messing with with a wire wheel.

The place I work we use a semi gloss paint for topcating the underside and frames.
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Old 10-26-2012, 06:42 PM
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Quote:
Originally Posted by munchigan View Post
has any one used eastwoods chassis paint they have a chassis epoxy primer and the chassis paint would they work well over the old paint if its scuffed and clean also do i need any of the rust preventive paint stuff or just prime and paint
Whatever finish you use, do not use gloss black- it will not look 'right'. A satin or semigloss finish will look MUCH better. You don't want flat black, either. Every time it gets touched it'll leave a mark that can't be removed.
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Old 10-26-2012, 06:48 PM
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Quote:
Originally Posted by cobalt327 View Post
Whatever finish you use, do not use gloss black- it will not look 'right'. A satin or semigloss finish will look MUCH better. You don't want flat black, either. Every time it gets touched it'll leave a mark that can't be removed.
Awesome advice there... LOVE satin black paint !!
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