Topic: Engine Paint

[Heironymous Josh]

So the PO of my 77 750F didn't use proper paint on the engine or didn't allow for proper curing.  Anywhere a drop of fuel lands, the paint is erroded away.  I want to paint the motor and hoping you guys could give me some input for a good durable engine paint in a spray can.  I don't have a large oven so high temperature curing could be a problem.  Thanks

Josch

[greenjeans]

Great handle.....
I've yet to find a good engine paint in a can.  I've tried Dupli-color high heat engine paint - looks great but doesn't stand up to gas.  There has to be something better...
Eastwood sells some as well, but I've heard it can't stand gas either.....  I've got both my engines out and cleaned and ready for paint.  Hopefully somebody will tell us the miracle paint.

[Brent C.]

How about powder coating?? Would it stand the heat??

[mick750F]

   I've been using PJ1 satin case paint on my '78F. It doesn't have quite the sheen of the original but it's close...a bit duller. It's rated for 500ºF. I haven't spilled gas on it but I suspect that it wouldn't hold up real well. The beauty of the paint is that because its a low sheen touch up is easy. Just clean and spray.

Mike

[scondon]

      Eastwood sells the VHT brand which i've used on my first engine. The 500degree satin and gloss black hold up pretty well against gas and oil. The 1200degree flat black holds up pretty good, but if you have any oil weeping from the engine it will begine to break down over time(if you let the oil build up and just sit on the engine for extended periods). VHT is highly susceptible to oil and gas until it is fully heat cured so if you can't bake your parts before assembly then be extra careful when assembling and for the first few days of riding. The engine parts should fit in even a small oven, just may have to do them one at a time.


     I painted my second engine with Duplo but have yet to put it in the bike. Duplo seems to be easier to handle before heat curing and definitely goes on thicker than the VHT. Don't have any word yet as to how it holds up after curing.

    With any paint, prep is the most important part. Even with good prep you should expect the paint to rub off near the shifter. Haven't found a way to "rattle can" an engine so it holds up as well as what Honda put on at the factory.

[ProTeal55]

I had my old tank sprayed with Dupli-color low gloss black engine enamel w/ceramic, and it held up pretty good to fuel (the few times I spilled filling up). Can't say how it would work on a motor but I am guessing it would work well...

[hymodyne]

I used VHT aluminium and clear for the lower case of the engine, and a can of BBQ grill black spray for the jugs and top end of the engine, as well as the header and pipes on the rebuild of my 500 shown in my avatar. I stripped everything and assembled once to make sure it would start and run properly unfinished,  took the engine out, then shot all the parts in their respective colors, put the engine back in and let its own heat from operation do the curing on head, headers, pipes and case. the clear yellowed a little after a few thousand miles, but the lower case paint remained pretty resistant to oil and gas. as for the upper parts painted black, weeping oil did degrade the finish up top in places that it was found, but after a wipedown with acetone I was able to spray and touch up those areas, start the bike and cure it again.

this time engine painting  should be interesting, if only because the upper portions of the engine are to be painted in gloss white. going to blast the juggs and other top end parts with plastic media before painting this time...

hym

hym

[Gordon]

this time engine painting  should be interesting, if only because the upper portions of the engine are to be painted in gloss white.

Have you considered what that's going to do to the engine running temperature?

[hymodyne]

how great of an effect will it have?

[Lumbee]

..I've heard of people powder coating (not to mention chroming) case/engine parts with no adverse heat effects, so I would think rattle can would be fine.

[BobbyR]

I used Krylon Hi Temp Aluminum paint. Enamel is gas resistant, and lacquer is not.  I know this since I had a bowl leak and the gas pooled next to the started cover and did not effect the Enamel paint.

[Magpie]

This is a great site about 750's! You can scroll down a bit to the engine paint link.
http://www.mypages.co.nz/~andyf/Honda.htm
Cheers,
Cliff.