Luna

iTrader: (6)

Ok I have finally decided on the color of my LS6 intake and now it needs to be prepped for paint.

Right now my plans are

1. Sand 60 > 120 > 220 > 400 > 800
2. Spray adhesion promoter
3. Spray High build primer and sand again
4. Silver
5. Clear

6. Wetsand? Will it really be necessary to wetsand?

But I have already run into trouble. When I recieved the intake it had some kind of crazy buildup all over it like baked on oil or something.

I tried sanding it off but it is very hard and I had better luck just chipping it off with a screwdriver in some places. I tried soaking it in some degreaser but it didnt do much and it turned all the parts of the intake where this buildup was red (wtf?!) - I used simple green BTW

So does anyone know what the hell this is all over the intake? and if any kind of solvents would help get it off without destroying the plastic?

Thanks

Duffster

iTrader: (103)

Don't have a clue what diesel would do to the plastic, but might clean up the gunk. . .Oddball thought. . .

Luna

iTrader: (6)

I was thinking about gasoline... I'm pretty sure that woudl work. But I would hate to ruin my intake

Duffster

iTrader: (103)

any chance of a picture of what you're talking about? What color is the 'gunk'?

Duff

Luna

iTrader: (6)

Its black, pretty much the same color as the intake, and when I soaked it in degreaser it turned red.

I will try to get some pics later but for now here are some from the ebay auction.

'Trust'

iTrader: (24)

Brake cleaner will clean it right up, just make sure you wipe the brake cleaner off with a multi purpose cleaner after.

Z28_DAD

iTrader: (18)

was the manifold cracked? it might be epoxy

227Hawk

iTrader: (1)

Soaking it in mineral spirits is going to be alot safer the gasoline.
Hawk

SPECIALIZED STAINLESS

iTrader: (15)

I would not use a high build primer on it. Just use a regular sandable primer. It is very hard to get around the fuel injectors and small spaces!

~JOSHUA

iTrader: (92)

Make sure you mask around the injector holes!! Also don't paint on the bolt surfaces (4) that the fuel rails use to bolt down with. The paint will crack when you bolt it down and you'll have have to touch up the area with a brush.


Like mentioned earlier, use aresol brake cleaner, it cuts through anything.

Sgt. Spuds

iTrader: (1)

Brake cleaner, its gods gift to use, cleans anything.

Luna

iTrader: (6)

I let it soak in some brake cleaner, it did soften it up alot but I still have to scrape it all off ...

edit: Also the reason im planning on a high build primer is because the intake has alot of nicks and stuff in the plastic that I would like to try to smooth out.

Luna

iTrader: (6)

Here's all the nicks that I was talking about in the plastic... the high build primer didnt fill it enough.

Any suggestions on fixing those ?

Some other pics of primer coat #2







and some random pics of the products I'm using



BTW: What ended up getting all the gunk off was a combination of brake cleaner, goo gone, a power washer, and ALOT of elbow grease.

1SicV8

iTrader: (3)

u can use some sort of filler

looks good so far, i wanna do this to my ls1 manifold just for ***** and giggles lol

parbreak

iTrader: (17)

Damn Luna. Thanks in worse shape than I thought. Your using the right products as far as rattle can stuff goes, so you're good to go with that.

As for the nicks and scratches, they look pretty deep for even high build primer. My first thought would be to sand off as much of the primer as you can and leave the areas it has filled as is. That will really give you a better idea how severe they are. If sanding them out is not an option then I would say you are going to have to use a filler and I would suggest a glazing putty. I use a product everyday called MetalGlaze and it it great. Sands easy, fills quick and minimal shrinkage. May take 2-3 coats in some places as the 1st coat should fill and the second and third coats should feather out.
Wet sand the glazing putty with 320-400 grit.

Then start your re-priming shooting light, multiple coats. And continue your procedure. If you need any help or further tips let me know. I've done a few of these so far and they've turned out really nice.

Bryan
parbreak

transambandit

iTrader: (6)

bondo has a great little filler for nicks/scrapes it comes in a red tube, should be right around where the regular bondo is, fills it right in then you sand down the excess. ive used it and it works great.

Luna

iTrader: (6)

If I use a filler do I have to take the primer all the way down? or can I just put the filler on top of the primer and just spray another light layer of primer on top of the filler?

I was going to just sand it down and paint it tonight anyway but I got it down to 800 grit wet and it felt so awesome I just couldn't bring myself to spray the color when it was so close to being perfect.

transambandit

iTrader: (6)

do a little bit of wetsanding with a 400 grit prior then make sure its clean and dry, add the filler then wetsand again until its smooth.

Luna

iTrader: (6)

Awesome. Hopefully I will hit it with the filler, prime it again, and wetsand to 1000 grit. Tomorrow

Then I'm spraying the silver!

presto_z

iTrader: (12)

i wouldnt use bondo... it doesnt do to good around extreme heat from what ive seen..... one night we had a woods party w/ a big bon fire and my buddy parked his bondo bandit truck next to the bon fire and the bondo was all cracked from the heat(maybe just because he had a ton of bondo in the fenders)....

i dont know how the bondo glayzing and spot puddy would do????...