Paint The Inside Of An Intake?

[ARAMP1]

Okay, so the diesel engine I'm building is pretty much together. I'm just doing minor things here and there. Anyway, I bead blasted the intake and then washed it to get a good surface to paint. Anyway, it painted up nice with some high temp engine paint, however the inside of the intake is rusting. Should I just leave it rusted? Coat it in WD40? Or maybe paint the inside and hope it doesn't chip off and go through the engine?

I was thinking at least dust it with some paint. Any ideas?

I was thinking of welding up a sheet metal intake in aluminum, however that's pretty far on down the line.

 

[76zimmer]

I would have it acid dipped, then repaint the outside. How could you get the whole inside painted anyway?

 

[ryoken]

rebead blast the inside clean.. blow off, immediately tape off and touch up the outside, or repaint once installed, then WD40 the inside walls... I'd never paint it...

 

[ARAMP1]

I would have it acid dipped, then repaint the outside. How could you get the whole inside painted anyway?

It's a 4-71 Detroit intake. I can almost fit my whole arm in it.

 

[ARAMP1]

rebead blast the inside clean.. blow off, immediately tape off and touch up the outside, or repaint once installed, then WD40 the inside walls... I'd never paint it...

It just has surface rust on it now that I can wipe off with my fingers. I'll probably take some brake cleaner to it or just go straight for the WD40. Thanks Ryoken.

 

[tourdog]

paint

i have heard of painting in side engines you will have to use eletric motor bush paint the red paint on motors . have never don it myself but read about it is suppose to make oil flow better in side because it is smooth.

 

[DEMON44]

i have heard of painting in side engines you will have to use eletric motor bush paint the red paint on motors . have never don it myself but read about it is suppose to make oil flow better in side because it is smooth.

that stuff is called Glyptal. used to use it to paint the insides of gearboxes, standard transmissions, transfercases when I used to rebuild junk for drilling rigs.

I second no paint inside intake parts though.

 

[t89blazer]

i have heard of painting in side engines you will have to use eletric motor bush paint the red paint on motors . have never don it myself but read about it is suppose to make oil flow better in side because it is smooth.

I have used Glyptal before on Cat and Waukesha industrial engines. We were buying it from Grainger Supply and we had problems with it. It was not pealing off, but it was deteriorating and staining the oil. We stopped using it for this reason, plus it is very expensive. This may have been an issue with the brand that we were using.

I would clean the intake and coat it with oil.