1986 454 Headers

Started by zMadMechanic, June 01, 2024, 02:53 PM

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zMadMechanic

Sanded/wire wheeled thoroughly (inside and out of frame rail and all nooks and crannies), acid etched, then three coats of POR-15 inside and out this whole area. Rusty lower control arm seen in pics will be replaced but easier to leave it alone until I reinstall the new upper control arm.

After hours and hours of wire wheeling and hand brushing loose rust:
Prepped.jpg

Acid Etched
Acid Etch.jpg

POR-15 (this is after the 1st coat):
Painted.jpg

Only used two 4oz cans - I'm always amazed by the coverage:
POR-15 4oz.jpg

RockwoodMike

With POR 15, that frame is DONE!! :)clap ..I have heard it called the "Poor Man's Powder Coat"...It is a very tough finish and you really shouldn't have to worry about rust again..

I would be inclined when you get your new parts, to lay a coat on them too..

I just hope that isn't POR on your skin in the last photo..Because if it is, it will be there for a while!!
The best mechanic is the one that can make it run with the least amount of parts!

RockwoodMike

The second picture shows that you acid etched the steel...With what??
I was wondering if the etch was necessary ??The steel in the first pic was super clean..That would have been the POR 15 starting application time for me
The best mechanic is the one that can make it run with the least amount of parts!

zMadMechanic

Finally getting back on subject... finished installing the drivers side header today! Only very minor fitment issue with the heat shield for the engine mount... easily solved by a small hammer  :grin:

I used the included gasket and hardware which came with the Flowtech set. I added anti seize to the bolt threads after using a thread chaser on the block and cleaning out the holes with compressed air.

I also used spray-on, high-temp copper gasket sealant on the included gasket because I've always had good luck with Peramtex. All torqued down to 25 pounds, starting from the middle and working my way out like a tire, in multiple (many) sequences.

I'm pretty stoked with how it came out:

Main.jpg

Wide.jpg

Clearance.jpg

Quote from: RockwoodMike on July 08, 2024, 05:19 PMWith POR 15, that frame is DONE!! :)clap ..I have heard it called the "Poor Man's Powder Coat"...It is a very tough finish and you really shouldn't have to worry about rust again..

I would be inclined when you get your new parts, to lay a coat on them too..

I just hope that isn't POR on your skin in the last photo..Because if it is, it will be there for a while!!

The second picture shows that you acid etched the steel...With what??
I was wondering if the etch was necessary ??The steel in the first pic was super clean..That would have been the POR 15 starting application time for me

I love Por-15, but I did have a poor (lol) experience on shiny bare metal on the fuel tank. I learned it REALLY needs some rust, or a very rough clean metal surface. It doesn't have anything to penetrate on bright bare metal and basically just peels up with any chipping of the paint or flexing of the metal whatsoever.  It also needs high humidity (60+%), but not too humdid (90+%)... I digress.

I decided to use Por-15's metal cleaner and acid etch (two separate products) in sequence, as directed, just to be sure on the frame rails. If it was all uniformly rusted, I wouldn't have bothered beyond thoroughly cleaning with 90% iso alcohol and compressed air. My frame had clean, bright spots after thoroughly wirebrushing... so I felt like my hands were tied. I want it to be one and done! Three coats + a top layer of rustoleum spray paint for good measure lol.

And yes, it sucks to get on your skin... ha!

RockwoodMike

Alright, Alright, Alright :)clap  :D

Looking at the collector, looks like there is no ground issues..Looks nice and tight up there..

I was wondering about the rest of the exhaust going back from the collector..Are you making your own muffler pipe??..Looks like you have a start on it already..

Well that wins round 1..What will round 2 hold for us all to see??

When you get your new suspension parts, I think some Rustolium paint will be in order..A nice satin black like your top coat on the frame..
I think the paint that comes on the parts is just a quick coat to prevent rust in storage and transportation..And it would not last long under the severe conditions of the road salts and rocks,etc..

Doing great!!
The best mechanic is the one that can make it run with the least amount of parts!