Rocker boxes, To remove or not to remove? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

chevy_fatman · 11-02-2003, 12:55 PM

I'm replacing the outer rockers on my blazer and I notice that the inside of the rocker boxes has rust flaking off, some big flakes are already just laying there.

My question is, how hard is it to remove these rocker boxes? should I do it? there's no structural damage to them (no rot) just surface rust and I want to protact them from rusting again, so should I remove them? how hard are they to put back on?

Below is a couple of pics that show my boxes.

Thanks for the read and any advise given.

Paul.

chevy_fatman · 11-02-2003, 01:02 PM

In this pic you can see some of the rocker box inside has some pitting from the rust, again, there's not rust through.

I will most likely use Rust Bullet encapsulator to take care of the rust, as I've read that this product desn't need as much prep as POR15 does, the bullet just requieres you to clean up the rust and aply 2 coats and is done, anybody used the rust bullet product here? results?

Thanks Paul.

1970blazin · 11-02-2003, 02:25 PM

We used POR-15 for our rocker boxes. I bought some Rust Bullet and am going to be using that in the doors. Here is a pic with the POR-15 - We just wire brushed the big rust off and painted the POR-15 on. Just did it so I can't tell you if it is going to hold up or not.

chevy_fatman · 11-02-2003, 06:26 PM

Thanks for the reply Diane, so you didn't get the inside of the boxes smooth? I wanted to smooth out most of the inside with my angle grinder that way it would look nice, but then again who is gonna see the inside :p

That looks very nice Diane, your blazer keeps me hoping for my blazer to look just as nice as yours.

Anybody used anything else?

Thanks. Paul.

1970blazin · 11-02-2003, 07:01 PM

No problem Chevy-fatman....wish my a$$ looked as nice as your pic!

LMAO
Diane

Kman · 11-02-2003, 07:15 PM

My rocker boxes look the same inside, I have the back covers off and I'm going to try to sand blast out the worst of the scale and paint My outer rockers are good they were replaced by some p/o

Has anyone tryed to clean these boxes through the end covers opening?
Kman

*Gee_Emm* · 11-02-2003, 08:11 PM

Fatman, the way you have them now they are halfway to being off. You will just have to disconnect the welds at the inside crossmember and a few welds at the front. It would take a little bit of work. Boils down to how good of a job you want to do. If you think you can get some Por-15 brushed or sprayed everywhere in them the way they are now leave them attached.

Huck · 11-02-2003, 08:49 PM

Paul, the rocker boxes are structual support to the body which means they should be strong. I would power wire brush any loose stuff, then spray with rust prep, then either spray and/or brush POR15 or similar. If you decide to remove them, you could create a unnoticeable sag in body in the process!! Make sure you keep your hardtop bolted on for alignment purposes. If the rust is light scale, I would not remove but clean and treat. My .02---Huck

blaz72 · 11-02-2003, 10:28 PM

If have a sand blaster works good.Save them boxes,wish i hade some on my blazer.Have to wait untial gmc pauls gets them in.

chevy_fatman · 11-02-2003, 11:34 PM

Quote:

Originally posted by 1970blazin
wish my a$$ looked as nice as your pic! LMAO
Diane

Wasn't you who sent me that pic?

J/K I forgot about you when I picked that avatar, I wouldn't want to offend you.

Quote:

Originally posted by Kman
I'm going to try to sand blast out the worst of the scale and paint

Quote:

Originally posted by blaz72
If have a sand blaster works good.Save them boxes

I hadn't thought of that, good opinion there guys, I think that I'll get me a syphon blaster since I don't have a sand blaster which is cheaper and use it there to erradicate whatever rust I find.

Gee_Emm, that sure sounds like it would be fun, but I'm not bodyman, I also thought about Huck's opinion if I removed the boxes I might not get them back where they were therefore creating structural deformity to the tub, which at the best might not be that bad, but since I would like it to be real close to original I guess I'll just leave them on and wire brush or sand blast most of it and paint over it to protect it from the weather, but since this blazer will be only driven on nice weather I don't have to worry about lots of water and salt getting in there again.

Thanks again guys for the opinions, this board rocks.

Paul.

70 Jimmy · 11-03-2003, 09:28 AM

If you keep your top on while boxes are removed you should have no troubles with deforming the tub. There are people driving without rocker boxes and don't have any issues. Of course they don't take thier rig off road and never take the top off.

Another thought: POR stands for "Paint Over Rust" so don't spend alot of time removing the rust. If you must, make sure you leave a rough surface for the POR to stick to. It will not adhear to a smooth surface. Good luck and post pics of your progress.

11-02-2003, 12:55 PM	#1
chevy_fatman Where's my beer? Join Date: Aug 2002 Location: I live in the state of denial.... Posts: 5,621	Rocker boxes, To remove or not to remove? I'm replacing the outer rockers on my blazer and I notice that the inside of the rocker boxes has rust flaking off, some big flakes are already just laying there. My question is, how hard is it to remove these rocker boxes? should I do it? there's no structural damage to them (no rot) just surface rust and I want to protact them from rusting again, so should I remove them? how hard are they to put back on? Below is a couple of pics that show my boxes. Thanks for the read and any advise given. Paul. Attached Images

11-02-2003, 01:02 PM	#2
chevy_fatman Where's my beer? Join Date: Aug 2002 Location: I live in the state of denial.... Posts: 5,621	In this pic you can see some of the rocker box inside has some pitting from the rust, again, there's not rust through. I will most likely use Rust Bullet encapsulator to take care of the rust, as I've read that this product desn't need as much prep as POR15 does, the bullet just requieres you to clean up the rust and aply 2 coats and is done, anybody used the rust bullet product here? results? Thanks Paul. Attached Images

11-02-2003, 02:25 PM	#3
1970blazin Blazerless:-( Join Date: Jun 2003 Location: Olympia WA Posts: 1,612	We used POR-15 for our rocker boxes. I bought some Rust Bullet and am going to be using that in the doors. Here is a pic with the POR-15 - We just wire brushed the big rust off and painted the POR-15 on. Just did it so I can't tell you if it is going to hold up or not. Attached Images __________________ 1970blazin 1970 CST Blazer-Orig. Dark Blue-SOLD Progress Pics of Blazer for sale

11-02-2003, 07:01 PM	#5
1970blazin Blazerless:-( Join Date: Jun 2003 Location: Olympia WA Posts: 1,612	No problem Chevy-fatman....wish my a$$ looked as nice as your pic! LMAO Diane __________________ 1970blazin 1970 CST Blazer-Orig. Dark Blue-SOLD Progress Pics of Blazer for sale

11-02-2003, 07:15 PM	#6
Kman Registered User Join Date: Sep 2002 Location: Melbourne,Florida Posts: 174	My rocker boxes look the same inside, I have the back covers off and I'm going to try to sand blast out the worst of the scale and paint My outer rockers are good they were replaced by some p/o Has anyone tryed to clean these boxes through the end covers opening? Kman __________________ New 89 chevy 1500 driver 72K20 rust bucket project stripped down to the frame engine rebuild started 71 Blazer - another procect

11-02-2003, 06:26 PM	#4
chevy_fatman Where's my beer? Join Date: Aug 2002 Location: I live in the state of denial.... Posts: 5,621	Thanks for the reply Diane, so you didn't get the inside of the boxes smooth? I wanted to smooth out most of the inside with my angle grinder that way it would look nice, but then again who is gonna see the inside :p That looks very nice Diane, your blazer keeps me hoping for my blazer to look just as nice as yours. Anybody used anything else? Thanks. Paul.

11-02-2003, 08:11 PM	#7
Gee_Emm Account Suspended Join Date: Sep 2000 Posts: 4,002	Fatman, the way you have them now they are halfway to being off. You will just have to disconnect the welds at the inside crossmember and a few welds at the front. It would take a little bit of work. Boils down to how good of a job you want to do. If you think you can get some Por-15 brushed or sprayed everywhere in them the way they are now leave them attached.

11-02-2003, 08:49 PM	#8
Huck Senior Member Join Date: Jun 2001 Location: Shelbyville, KY Posts: 3,269	Paul, the rocker boxes are structual support to the body which means they should be strong. I would power wire brush any loose stuff, then spray with rust prep, then either spray and/or brush POR15 or similar. If you decide to remove them, you could create a unnoticeable sag in body in the process!! Make sure you keep your hardtop bolted on for alignment purposes. If the rust is light scale, I would not remove but clean and treat. My .02---Huck

11-02-2003, 10:28 PM	#9
blaz72 Registered User Join Date: Oct 2003 Location: connecticut Posts: 21	If have a sand blaster works good.Save them boxes,wish i hade some on my blazer.Have to wait untial gmc pauls gets them in.

11-03-2003, 09:28 AM	#11
70 Jimmy aka Crusher, Crushergmc Join Date: Mar 2000 Location: Oregon Posts: 1,834	If you keep your top on while boxes are removed you should have no troubles with deforming the tub. There are people driving without rocker boxes and don't have any issues. Of course they don't take thier rig off road and never take the top off. Another thought: POR stands for "Paint Over Rust" so don't spend alot of time removing the rust. If you must, make sure you leave a rough surface for the POR to stick to. It will not adhear to a smooth surface. Good luck and post pics of your progress. __________________ "KEEP IT DOWN!" 70 Jimmy 454 2wd 56 GMC Big Window "It's funny till someone gets hurt, then it's freakin' hilarious"



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