Prince George Vintage Motorcycle Club
Technical Section => Painting => Topic started by: luke on December 05, 2017, 10:39:00 AM
-
Hey there, new user, first post.
I have a 82 CB 750 Engine that I want to repaint. I'm not looking to tear down the cylinder heads and block. Just want to paint it while assembled. I have done a few of the covers by baking them in my oven, looks great, and seems very durable. Question is, how can I cure the primer and paint on the engine? Obviously too big to fit in any oven I have.
Is it enough to prime and paint then resemble and run the motor to cure the paint? I know that is what the label on the can says, but I wonder if some locations around the pan and clutch area wont reach the high temperatures required for a cure?
Also, does if matter if the primer and paint are heat cured as one?
I'm using VHT engine - primer and paint.
Any advice would be appreciated. Thanks!
-Luke
-
Welcome to the forum Luke.
I have painted several engines, and I have a very simple technique which I call the "rattle can rebuild," to make an engine look like new without breaking a seal.
Here is a picture of a bike I did a few years ago.
(https://i.imgur.com/WhJAIYj.jpg)
I will have to check my cupboards for the make, but I buy aluminum coloured paint at Chieftain Auto. I clean up the NON shiny aluminum as much as I can, and then just spray the paint on. I dries nice, and probably bakes on with time, but you don't need to put it in the oven. I have pressure washed these engines later, and never had any paint come off.
The shiny aluminum bits are a lot more work.
Peace & Paint, Dennis.
-
I have found the best way to bake the paint is to first let it cure for about a week, just letting it dry is not enough. Now go for a short ride, just long enough so you can smell it baking. let it cool then do it again 2 or 3 times, now go for a leisurely-not hard highway ride say to Salmon Valley. Enjoy! CHEERS.
-
Thanks for the advice. Im going to go ahead and prime this weekend. I'll bake the best I can. And I will set it aside for a week before final painting. I'm betting that will hold it on there until I can reassemble and run it for the final cure.
That Suzuki look deadly, as I rebuild this CB I'm thinking more and more about modifying it to the Cafe style.
-Luke
-
This is only sort of related, but I thought since you had a photo up of your engine with rags in the intake, I'd post a question.
Does anyone know of a source for rubber bungs or something that could be stuffed into the intakes and exhaust openings that would stay in place while pressure washing?
(https://i.imgur.com/O1xTcLU.jpg)
This engine is going to get the "rattle can rebuild" treatment, and I'd like to use a pressure washer to speed up the cleaning process.
Peace & grease remover, Dennis
-
Check out the $$$$ store. They have a pretty good assortment. Both in toys and pets.
-
Also at Hobby Brews. They may have a hole in them, but you can plug that with some silicone or hot glue.
-
Check out the $$$$ store. They have a pretty good assortment. Both in toys and pets.
Really? My daughter works at the Dollar Store (or Dollarama ... whatever the one at Spruceland is called). I will check it out.
Peace & Paint, Dennis
-
Painting went really well. I think the mat black was a good choice. Few missed areas that I will get next weekend but overall really smooth. I did the primer, then paint all in a one hour application, then tented the motor and gave it a mid-temp cure with a portable heater. We will see how durable it is during reassembly.