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Old 07-15-2019, 04:15 PM #16
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MikeinNH67 MikeinNH67 is offline
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Quote:
Originally Posted by firebirdguy View Post
i just came from owning a 97 cherokee for 15+ years as a daily driver here in iowa... the underside of the frame & floors were very rusty with loose scale flaking off & major pitting in areas, especially after they started using the liquid salt brine on the roads in the last 8-10 years. but it was almost all external rust just like the 3rd & 4th gen 4runners i see in these parts... the frame itself was still solid, could not poke a hole anywhere on the frame or suspension components with a screwdriver & hammer, still solid metal, just very ugly with heavy surface rust everywhere including the driveshaft, rear axle, frame & floors. the rockers however were shot & were rusting holes from the inside out.
Maybe it depends on what is used on the road, I don't know. The Cherokee I had was a 99 and I just got rid of it before winter (my 4th Jeep). The frame would look fine externally unless you picked at a small dot of rust then you would end up with a cavernous hole that was all rust flakes on the inside. I welded on frame stiffeners years ago when this first started. Most of the original frame on that truck is gone with new metal welded on. Same thing happened with the rockers and you see it often around here. I envy the areas have have no rust.
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Old 07-17-2019, 03:37 PM #17
TheUltimateBohab TheUltimateBohab is offline
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Quote:
Originally Posted by firebirdguy View Post

i just bought an 08 4runner after looking for over 6 months

it's a good idea to inspect all areas & use whatever steps you feel it needs.
exactly what I did ended up getting an 08 after about six to eight months the one I picked up is damn close to rust free why it took me so long to find one I kept looking at ones that were solid rust underneath....

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Originally Posted by hankd View Post
haha best sentiment ever.

i get krown rustproofing treatment in the fall, and when i go to the self serve car wash i always hit it underneath. whenever i have it serviced i get them to check the general rust situation so i can be proactive about it. my 05 has quite a bit of rust but it hasn't gotten soft yet or developed scaling or separating. i feel i will get many more years with this upkeep. i'm in nova scotia right on the coast so rust is a big issue.

i guess you're kind of at the mercy of what the previous owner did. i got my 05 in 2018, so i'm just trying to address any issues and stay ahead of the curve on it.
The previous owner must have put some kind of effort into keeping it clean because it's pretty close to rust free and there's some kind of a coating on the skid plate and the front part of the frame but he skipped the rest of the truck!?

what about that rust converter from Amazon? I figured I could do my whole 4Runner my car and my dad's Tacoma and still have some left.... if that stuff worked out to be pretty cool and then I would just paint over the top of it with something

The interior frame rot is what that one thread I posted is about from the 3rd gen some kit you can spray on the inside keep the interior coated as well...
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Old 07-18-2019, 07:45 AM #18
Direwolf82 Direwolf82 is offline
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Whatever you do make sure you do the in and outside of the frame. If the coating goes bad on the frame where you can see it then it will go bad where you can't see it as well. Biggest issue I've seen is how different areas collect dirt and mud, a small amount of dirt holds moisture and that causes rot. Clean the undercarriage as best you can and fluid film inside and out of the frame and the entire undercarriage. You will have to do this yearly but it's worth it. The only way to really get in and paint everything is a body off deal otherwise you just can't physically spray POR15 or any kind of paint on every surface under the truck. I wouldn't want to paint the underside and get complacent checking it because hey, I just painted it and it'll be good for years. Have seen it happen where the rot started in areas that didn't get painted, like the top of body mounts and inside shock mount areas. A heavy heavy spray of fluid film tends to get into the nooks and crannies a bit more effectively from what I've seen.
Wrenching on cars in New England most of my life till I got stuck in Virginia.
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Old 08-07-2019, 05:55 AM #19
TheUltimateBohab TheUltimateBohab is offline
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So I've decided I'm going to get a sprayer douse everything underneath with a better quality rust converter than the one I posted and then go over the top of that with a bedliner I figured that should do it well.... when I finally get it finished I'll post a write up with photos how I did it....
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