Cleaning the inside of the chassis?!?!

AlexD333 · Apr 21, 2015

Ok, so as we all know, a lot of us are a bit lapse on chassis protection, I have done my best to protect the outside but looking in the small holes of the chassis I can see rust inside

So what do we do?

The only access I can see is from the rear but it's a long way in!? :lol

perelaar · Apr 21, 2015

I'm doing the following:
1) Spraying as much sand, gunk and loose rust out with a high-pressure cleaner,
2) then spraying the inside liberally with Fertan (rust-converter).
Good thing is, the metal/rust needs to be wet when you apply Fertan, and it does not do anything to plastic, chrome, etc.
3) When dry, spray off the dust film formed on the Fertan, let dry again, and treat the inside with hollow space wax.

Stage 3 is half done now, outside of chassis and bottom of car need to be undercoated again as well.

elty001 · Apr 21, 2015

I poked drain rods down mine then blew it out with an air line.
couldn't get all the way down but got a fair load of crap out of it.

perelaar · Apr 21, 2015

blowing them with air would be a nice quick way to dry them out as well - haven't thought of that before. Another reason to buy a air compressor

rustic · Apr 21, 2015

elty001 said:
I poked drain rods down mine then blew it out with an air line.
couldn't get all the way down but got a fair load of crap out of it.

It's amazing where those nappy liners come from lol...

I often wonder if those holes in the chassis are more of a pain than anything.
I guess if it was possible to totally seal all the chassis holes, and welds, bolt threads etc then you could pressurise it to test for leaks, and then either fill with oil, waxoyl, or pure nitrogen to stop rust before it can start.

I know not practical, but if it was designed into it from the drawing board, it would make an interesting project.
I know that there were galvanised LR chassis available, I doubt there was ever a Terrano one... That would be something lol.

Banshee · Apr 21, 2015

rustic said:
It's amazing where those nappy liners come from lol...

I often wonder if those holes in the chassis are more of a pain than anything.
I guess if it was possible to totally seal all the chassis holes, and welds, bolt threads etc then you could pressurise it to test for leaks, and then either fill with oil, waxoyl, or pure nitrogen to stop rust before it can start.

I know not practical, but if it was designed into it from the drawing board, it would make an interesting project.
I know that there were galvanised LR chassis available, I doubt there was ever a Terrano one... That would be something lol.

Don't get me started

You know I'll end up approaching a company to make one for us :lol

perelaar · Apr 21, 2015

If one were to go as far as taking the body, engine, drivetrain etc off the chassis, it could maybe be dipped in a rust removal agent.

Then out with the welder to repair whatever is needed, spray inside full of coating against rust, and seal holes...

Hell of a job though

AlexD333 · Apr 21, 2015

So i need to spray in there, then apply that crazy stuff, then come to work with an air line and spray away if I can get in there...

AlexD333 · Apr 21, 2015

perelaar said:
If one were to go as far as taking the body, engine, drivetrain etc off the chassis, it could maybe be dipped in a rust removal agent.

Then out with the welder to repair whatever is needed, spray inside full of coating against rust, and seal holes...

Hell of a job though

Riiiiiick :augie

rustic · Apr 21, 2015

Banshee said:
Don't get me started

You know I'll end up approaching a company to make one for us :lol

Actually, there are quite a few Chassis makers within 5 miles of you...:augie

briggie · Apr 29, 2015

rustic said:
Actually, there are quite a few Chassis makers within 5 miles of you...:augie

green oval ? :augie:lol

briggie · Apr 29, 2015

rick took the complete body off a t2 if I remember correctly ..... surely would be easier to treat all the chassis then ? ..... just a idea

AlexD333 · Apr 29, 2015

briggie said:
rick took the complete body off a t2 if I remember correctly ..... surely would be easier to treat all the chassis then ? ..... just a idea

Absolutely yes, if I had the equipment and skill to do this I would love to.

I would stand the chassis up and let it ooze inside, then turn the other way, all nooks and crannies covered, the thing would be indestructible. :thumb2

Infect, dunking it overnight in something would be preferable :naughty

macabethiel · Apr 30, 2015

Chassis Inners

Never tried it but often wondered if filling cavaties with building foam after rustproofing would stop the water getting in ?

Banshee · Apr 30, 2015

macabethiel said:
Never tried it but often wondered if filling cavaties with building foam after rustproofing would stop the water getting in ?

Thats a good call, can't see why that wouldn't work or if that would do any harm :nenau :thumb2

perelaar · Apr 30, 2015

Building foam would degrade over time (it is not meant to be exposed to light and water), thus trapping moisture inside. So in fact you would achieve the opposite...

briggie · Apr 30, 2015

AlexD333 said:
Absolutely yes, if I had the equipment and skill to do this I would love to.

I would stand the chassis up and let it ooze inside, then turn the other way, all nooks and crannies covered, the thing would be indestructible. :thumb2

Infect, dunking it overnight in something would be preferable :naughty

just think of the jobs and mods you could do with the body removed from the chassis :naughty

elty001 · Apr 30, 2015

perelaar said:
Building foam would degrade over time (it is not meant to be exposed to light and water), thus trapping moisture inside. So in fact you would achieve the opposite...

I can second this,a big no.
my old Suzuki sj had a knackered screen surround so I took it off to clean up the rust and re paint only to find it filled with the stuff,once I started to remove it the surround was too far gone to repair and the foam inside was wet through.

macabethiel · Apr 30, 2015

Alternative foam ?

perelaar said:
Building foam would degrade over time (it is not meant to be exposed to light and water), thus trapping moisture inside. So in fact you would achieve the opposite...

Okay how about cavity wall foam instead ?

perelaar · Apr 30, 2015

I would honestly leave the chassis rails empty - apart from rust treatment and waxyol or so.

Far easier to clean, and weld if need be (imagine what would happen if you start welding a chassis filled with PU foam.

Cleaning the inside of the chassis?!?!

Help Support Nissan 4x4 Owners Club Forum:

Well-known member

Well-known member

Well-known member

Well-known member

Well-known member

Moderator

Well-known member

Well-known member

Well-known member

Well-known member

Well-known member

Well-known member

Well-known member

Well-known member

Moderator

Well-known member

Well-known member

Well-known member

Well-known member

Well-known member

Similar threads

Join the conversation!

Join today and get all the highlights of this community direct to your inbox. It's FREE!