High Build Primer

Would painting my engine with a coat or 2 of high build primer to smooth out the block and heads cause to much heat??

 

Is it street driven...or a show car...???

If street driven...why would you want it super smooth...???

R-

 

To answer your question....yeah. maybe. You really should keep the thickness of anything you squirt on there to a minimum. That being said, I have one medium coat of DP and a couple thin coats of color and a couple thin coats of clear covering the color, and have over ten thousand miles on one of my cars without any hint of increased heat...

 

Thanks Ed, what's DP?

Its a street driver but I also want it to be showie.since not many people around here run Nailheads I want to give them something to look at

 

Night Crowd

 

DP is an epoxy primer made by PPG. If you really want to get your engine smooth break out your mini grinder and rolocs and go to town.

 

I played around with some rolocs and sanding stones on the intake looks good but i still have to get the crevisis which is the hard part. Doesnt take very long but is a patients and pressure control thing

 

Try a dremel and the various size sanding drums that they make. I dont have one but I know they make all kinds of different bits that will fit anywhere that you want smooth. If you were to put enough primer on to fill all the casting bumps and then paint you will have outrageous mil thickness, and with the heat the motor produces, I can forsee problems.

 

Search Chopolds's threads on here. He did a tech on smoothing your block and head castings as well as everything up to final paint. You definitely want to keep your build down, as Special Ed said. Not so much for causing too much heat, but because the heat will expand the block and having a lot of build will cause the paint to crack. By keeping the build as low as possible, you minimize the risk of the paint cracking.

 

Thanks Bill coming from a painter I'm sure you know what your doing

 

http://www.jalopyjournal.com/forum/showthread.php?t=226157

 

What tips and bits did you use to get into the crevices

 

For the first cut I used a variety of shapes in carbide burrs, on a high speed die grinder. From round to very pointy cones.
Then to finish up those areas, to a smoother finish, I used cartridge rolls...those things they use to port heads. I picked up an ***ortment at Carlisle one year, different grits, straight and cone shapes. These helped smooth the rough carbide cuts a LOT!
One of the better discoveries I found was a "flap disc" similar to the ones you find for big grinders...in 2 and 3 In. sizes for die grinders. Fast metal removal, but depending on the grit, they can leave a very smooth surface.

 

Thanks Chop, I was using those sanding stone's then I found the sanding discs that look like scotchbite pads those ****ed. I give the mini flap discs a shot I found these for pretty cheap

http://www.hmabrasives.com/FlapDisc2in60.html