[predator]

I have to redo the h/g on my 4age, so thought I may as well tidy things up while I have everything apart.

Other than the gaids factor, is high temp paint (VHT) going to last when painting my exhaust manifold? It's not a turbo, so while it gets hot obviously, shouldn't reach stupid temperatures.

If it's all just going to peel off and look s##t after a few months I will probably just leave it as is.

Anybody have any experience with this?

[Rollagirl]

beadblast the manifold first to get rid of prior coatings/surface rust then clean with wax/grease remover and paint with VHT exhaust manifold paint. My levin's headers were done this way a couple of years ago and they are still silver.

[TERRA Operative]

I use the flame proof stuff on my headers etc. It's higher rated than the manifold paint, I've had the exhaust manifold paint burn off before, but the flameproof one just bakes on harder with higher temps.

When I did the blacktop headers on my GZE, I just gave them a wire brush and a good clean with wax and grease remover then painted them. Make sure to cure them like it says on the can, mine are still fine after months of hard driving.

[kim]

The ones on my trueno are plain black, i used flameproof paint. hope it helps a bit.

f#####g ####s f##k you

This post has been edited by kim: 08 January 2010 - 03:13 PM
Reason for edit: Removing Pointless Drivel

[Privatealpha]

Do turbos run hotter on the manifold?

[5lovegtz]

Yes

[predator]

Thanks for the replies. Will give it a try, sounds like it will work fine.

[orangeLJ]

As above, hit them with degreaser or some form of caustic cleaner (brake or carby cleaner) then a good wire brush or sand with some 400 sandpaper to remove any loose bits.

then a good wipe over with wax and grease remover.

Give it a "dust coat" (very light coat) of the VHT flameproof paint.

Let that flash off, then give it a decent coat (one coat only at this stage)

Then slip the collector end over the exhaust on a running car and let them get some temperature into them.

once they get to a point were they are just about too hot to touch, take them off and give them another reasonably thick coat, leave that to flash off, then hit them once more with a finishing coat.


Then whack them over the exhaust again to fuly temper the paint.

[Casey-G]

Lol my bro painted his 13b headers in his rx4, blistered 600* C paint even, he did it properly and everything, but it still burnt the shitt, i than suggested ceramic coating them.

[TERRA Operative]

You need the flame proof stuff, rated to 1400 deg F or something. That stuff is a ceramic base and just bakes on harder with increasing heat.

[PsyCo]

I'm painting my new headers on Friday before my new system is sorted on saturday.
Will take some pics of how its done

[orangeLJ]

different part, same basic process-

Baking at home with OrangeLJ-

First, prepare your dish by applying a speckling of grainy medium via a high pressure outlet (also known as particleblasting)

Then add a splash of high temperature anti-rust industrial primer.

Here are some I prepared earlier-



(dont mind the missing kitchen door, Im having them cut down to put in a dishwasher under the sink!, dont mind our oven either! its reasonably old and looks a whole lot dirtier then it is in real life! haha)

After this process is complete and your primer is set, preheat your oven to 100 degrees celcius and move your racks as to evenly space your cooking.

like so-







After this grab your potmit and head out to a pre-prepared painting area and give them a nice light coat of Heat proof paint.
allow to flash off for a couple minutes then hit it with a nice thick one.

They should be hot enough to flash off a thickish layer in 5 minutes.

Give two more coats and then head back inside once they are touch dry and back into the over at 100 degrees.



and this is your finished result



yum yum!

I reccomend doing this when your wife/girlfriend or mum is out for a few hours.

It doesnt go down too well when they notice you have their potmits outside.... whoops!

This post has been edited by orangeLJ: 10 February 2010 - 07:57 AM

[TERRA Operative]

I do the same, but I follow the 3 stage temperature baking as on the back of the flameproof paint can. I use the VHT stuff, seems good so far.

Oh, open your doors and windows when doing this. Fumes are baaad mkay.

[orangeLJ]

This wasnt the flame proof stuff, just your average high temperature paint.

I finished it off with a coat of the "brake caliper" paint too, gives the high temp some resistance from brake fluid etc etc.

[PsyCo]

TERRA Operative, on Feb 10 2010, 09:33 AM, said:

I do the same, but I follow the 3 stage temperature baking as on the back of the flameproof paint can. I use the VHT stuff, seems good so far.

Oh, open your doors and windows when doing this. Fumes are baaad mkay.

I painted mine last night and baked them this morning.
3 stage process was painful, literally when i found the hole in the oven mits the hard way after the second bake @ 200 Deg.
VHT recommend 315 deg C for the final bake and sadly my oven only goes to about 280 so i left them in there for just under an hour at that temp. Hopefully thats enough.

Will post pics when i get home from work tonight.

This post has been edited by PsyCo: 11 February 2010 - 02:15 PM

[PsyCo]

This is the stuff you wanna use



Origanlly mine looked like this. I'd say this is more of just a coat of crap to keep them from rusting because it rubbed straight off when I wiped them down with Wax & Grease remover



After first coat





And after baking



Here's how they look fitted