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Main : Members : Demojob RUST

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RUST
RUSTPopular
SubmitterDemojobMore Photos from Demojob   Last Update2003/5/23 17:06    Tell a friendTell a friend
Hits3467  Comments6    0.00 (0 votes)0.00 (0 votes)
I got rust in this spot on both sides, getting repaired soon, any ideas on preventing this with my new guards???  Drill lots of holes to allow for great drainage???

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Poster Thread
charge
Posted: 2003/11/18 1:24  Updated: 2003/11/18 1:24
Just popping in
Joined: 2003/11/18
From: Central NSW Australia
Posts: 2
 Re: RUST
Steps on slowing the rot.
Get the guards off and the vent/ grill off as well (plenum grill?.. back of bonnet). You may want to soak the bolts in a bit of WD40 before you try to remove them. If the gaurd hasnt been removed in its life, chances are that you are going to snap the heads of the bolts if any rust has grabed them. Work at them slowly.. no rush.
The two bolts at the bottom of the rear of the fender pannel will be the mongrals. Soak, heat, tap.. they are nearly always rusted in. Think about replacing the bolts with stainless items and a bit of Locktite. It will save the hastle next time around.
OK, get the hose out and your board shorts on and wash out the 25 years of crud in the splash and drain channels under the vent grill. Dont wash crap down the air-vent holes. Stick your head in the hole and check where things are first. Scrub out the gunks and get a bit of coarse wet and dry and rub down any rusted bits. Wash down again and let dry. Use a phosphoric based rust converter/ sealant paint. The stuff reacts with rust oxide and bonds to bare steel; it also bonds to paint and skin so take care. Give the splash and drain tray a good coating and include any areas which look like they could be rust catchers in the future (seams, welds, corners etc).
Now, the water that enters through the grill and into the splash tray is supposed to run to the outside edges of the tray, through a 2" rectangular hole and empty down the base of the guard. If you note where this rectangular hole is inside the tray cavery a few extra drainage holes can be drilled from the outside of the section into the area of the tray where the water drains. Once drilled, clean the site up and paint with rust converter. A couple of coats of very good quality metal paint on the inside and unseen parts will help keep things like rust at bay.
Last step is to keep it clean. Make it part of your habit to wash out the splsh tray, check for leaf and dirt build-up and also give the inside arches a good wash down too... And polish those stainless bolts while youre down there!

Poster Thread
stirlingmac
Posted: 2003/5/21 12:56  Updated: 2003/5/21 12:56
Home away from home
Joined: 2000/5/6
From: Wellington New Zealand
Posts: 962
 Re: RUST
Most rust removers contain an acid called phosporic, it it commanly found in Coca-Cola !! Sprayed in a 5:1 solution with water it etchs the steel and leaves a nice matt gray colour. Phosphoric that is not coke !! You could patch that area with stainless by using a Mig welder it will happily weld the two dissimilar metals. Over the last 5 years or so all the rust repairs I've done, I've used a paint called POR 15 it is brilliant . POR is supposedly short for paint over rust. Allowing the area to drain is important but that area tends to collect crap flung from the tyres etc quite quickly unless you can devise an inner mud guard.

Poster Thread
no
Posted: 2003/5/21 3:59  Updated: 2003/5/21 3:59
Home away from home
Joined: 2002/11/10
From: NorCalifornia, up by Sac
Posts: 332
 Re: RUST
Stainless steel. Sorry, that was uncalled for. I'm in the same boat, RUST! I found a product in the USA you spray/brush/soak on, it's called "must for rust". It has already(in 15 min) neutralized the rust in the trunk. I will probably improve the drain too.

Poster Thread
dattodude
Posted: 2003/5/21 5:11  Updated: 2003/5/21 5:11
No life (a.k.a. DattoMaster)
Joined: 1998/12/6
From: Sydney, Australia
Posts: 5806
 Re: RUST
Yeah, cut out old rust, de-rust it, and replace with steel. I like using "Emertan" Rust treatment. It's an industrial product. You can't buy it at k-mart.

Then don't leave your car in the rain..garage it. Or keep it under a carport.

Even the best Datsun will start rusting after 3 years in the rain. The original panel design and paint prep was not designed to last forever..

It's a small miracle that there still exists some rust free examples.

Chris

ps. By The Way..Nice Rust photo. This pattern/position for rust is common.

Poster Thread
WALLY
Posted: 2003/5/21 12:31  Updated: 2003/5/21 12:31
Home away from home
Joined: 2002/11/5
From: Gold Coast Aust
Posts: 233
 Re: RUST
Lets start with how the water gets in
It comes in though the vents behind the bonnet then runs down to a hole that is there to let it out you will only see this hole when a section is removed from above the stiffening at the top of the inner guard block the factory hole and leave the section you cut out open.this then allows the water to run straight onto the road instead of down though the rust holes that have formed (in behind the stiffening section) that you can not see t.These rust hole allow the water to run down inside the panel where the side kick panels are it then leaks down to where the rust is in the above photo.
Hope this all makes sence works for me

Poster Thread
Lobster
Posted: 2003/5/24 11:03  Updated: 2003/5/24 11:03
No life (a.k.a. DattoMaster)
Joined: 2002/8/25
From: Canberra, Australia
Posts: 1618
 Re: RUST
Quote:
Lets start with how the water gets in
It comes in though the vents behind the bonnet then runs down to a hole that is there to let it out you will only see this hole when a section is removed from above the stiffening at the top of the inner guard block the factory hole and leave the section you cut out open.this then allows the water to run straight onto the road instead of down though the rust holes that have formed (in behind the stiffening section) that you can not see t.These rust hole allow the water to run down inside the panel where the side kick panels are it then leaks down to where the rust is in the above photo.
Hope this all makes sence works for me


Ok the first bit doesn't completely make sense. But I see what you are getting at. This is happening to me!
Comes in the back of the driver side kick panel...
How hard is it to remove the guard? I haven't actually done it on my car yet...
any hidden bolts to look out for?
I might give this a go, next time I get a day off...

Poster Thread
Demojob
Posted: 2003/5/24 11:08  Updated: 2003/5/24 11:08
No life (a.k.a. DattoMaster)
Joined: 2002/6/8
From: Warwick, QLD
Posts: 1170
 Re: RUST
Hey Lobster,
Theres about 5 bolts along the top which is in the engine bay(up the top facing inwards) you sould have had to seen them. there are 2 behind the grill between the headlight and the outter edge of the guard and there are 1 or 2 under the bumper bar on the inseide of the guard (I think) and there is one underneath where this rust pic is shown. that should be all of them.
Cheers Damo

Poster Thread
Dodgeman
Posted: 2003/11/18 10:54  Updated: 2003/11/18 10:54
No life (a.k.a. DattoMaster)
Joined: 2003/6/27
From: Southern Tablelands N.S.W. Australia
Posts: 8287
 Re: RUST
Here's what i have done to prevent rust in the reinforcing channel that runs verticaly at the rear of Datsun 1000 front guards. I say "prevent" rust as i started with new guards.

Run a paintable sealer down the edges of the channel to seal it to the guard.
Paint the inside of the guard along with the outside.
There is a hole top & bottom of the channel. Tape one over & pour some paint in the other. Tape over the other hole & slosh around untill the inside is coated. Drain surpluss.
Allow to dry,.... fully
In my case, we pumped windscreen sealant in the bottom hole untill it filled the whole channel.

Mud normally accumulates in this channel & the outcome is predictable. The object was to 1. Seal the steel & 2. Fully occupy the cavity with a harmless material to keep out the mud.
It's a thought. If 1200 guards are constructed in a similar way, it could be worth the effort if you plan to keep the car, & 1200 guards are still available new.