Question for anyone who restores/paints old motors

[nwcove]

the cowl for my johnson cd 13 (motor needs powerhead) is not in such great shape but i still want to sand and paint it. my question is reguarding "no sanding required" primer. the cowl has some pitting in places and i would like to keep things as smooth as possible, can no sanding required primer be sanded????? the spray can offers no info. im hoping that its just not required but ok to do.

 

[JimS123]

Re: Question for anyone who restores/paints old motors

Painting is all about preparation. If you prepare it correctly, no need to sand the primer. If you prime and find its not smooth, you didn't sand correctly in the first place.

That said, no-sand primer means you don't have to sand it. It doesn't mean you can't. The best coating application consists of priming followed by 2 top coats, all within a 1 hour time frame. If you find that you screwed up the preparation, wait 48 hours after the prime coat, then sand it to your liking, then re-prime and topcoat.

If your cowl is aluminum, you need a self-etching primer. If its fiberglass, use a good automotive primer.

 

[nwcove]

Re: Question for anyone who restores/paints old motors

this cowl is aluminum, and must be in worse shape than i thought. the metal is pitted in spots, moreso than could or should be sanded. the pitting isnt all over the cowl, but it would definitely show through any paint job. i did get self etching primer, and i hope i can fill the pitting with primer and sand it out. most of the paint has been weather beaten off this motor, so it needs to brought back to bare metal for a fresh start. would glazing putty adhere to the trouble spots? maybe im just being to fussy??

 

[5150abf]

Re: Question for anyone who restores/paints old motors

Sand it a little with some 320 wet/dry to get the worst of it off then use an etching primer, any auto parts store, then you can use a high build primer over that, it will probably take 4-5 coats with a wet sand in between but you should be able to work out almost all the pits, you could try the glazing after the etching primer btu that has to go on first.

With some time and elbow grease you should be able to get this looking like new again, as Jim said, it is all about prep, I stripped my engine down and repainted it, spent 15-20 hours prepping and maybe 1-2 hours actually painting.

The difference between a $400 paint job and a $4000 job is about 100 hours, everything else is the same.
it si all about prep

 

[nwcove]

Re: Question for anyone who restores/paints old motors

thanks guys, i will follow your advice! dont want to have to sand this to bare metal twice!