Chewing gum substance on outriggers
Discussion
I'm delving in to the murky depths of my chassis with a wire brush/drill, rust removing gel and Rust Bullet, but I've come across some white chewing gum-like substance. Could be some sort of silicone caulk/sealant perhaps.
It's about a foot forward of the rear wheels; I originally thought it was some sort of goo picked up while driving but it's on both sides in the same place. It seems to go up and above the outrigger.
This would suggest there was a purpose to it being there, but I've never heard of such a thing on these forums!
Should it be there? Does anyone know what it is? Should/how do I get it off?
I'll try and get some pics up in a moment.
It's about a foot forward of the rear wheels; I originally thought it was some sort of goo picked up while driving but it's on both sides in the same place. It seems to go up and above the outrigger.
This would suggest there was a purpose to it being there, but I've never heard of such a thing on these forums!
Should it be there? Does anyone know what it is? Should/how do I get it off?
I'll try and get some pics up in a moment.
It's probably a material called 'plumbers mate'. I would guess it's there because the bodywork was too close to the outrigger during construction. Without it the body would damage the outrigger coating. If it is plumber mate then leave it in place, there's no way corrosion would have occurred beneath it so, as my engineer used to say 'if it ain bust don't fix it'
Edited by tvrbob on Saturday 23 September 19:10
mine had that bubble gum/dum dum compound as well,it was in the gaps of the body/chassis gaps in the front arches and every so often where the body touched the outriggers,looked factory to me, my brothers chassis had the same stuff seems to harbour dirt and crud gouged it out when i painted and waxed the chassis,and just used black silicone sealant in gaps in front wheel arch to stop stones getting trapped between corner chassis plates and body,thus abrading my good paint work on the chassis outriggers,starting the whole corrosion process off again.thats possibly what they were trying to achieve with the mastic/bubble gum.
that daddy said:
mine had that bubble gum/dum dum compound as well,it was in the gaps of the body/chassis gaps in the front arches and every so often where the body touched the outriggers,looked factory to me, my brothers chassis had the same stuff seems to harbour dirt and crud gouged it out when i painted and waxed the chassis,and just used black silicone sealant in gaps in front wheel arch to stop stones getting trapped between corner chassis plates and body,thus abrading my good paint work on the chassis outriggers,starting the whole corrosion process off again.thats possibly what they were trying to achieve with the mastic/bubble gum.
That daddy, do you mean that you sealed the gaps between the chassis and the fibreglass, flush with the bottom of the car?
I think it's a good idea, but I am concerned about moisture being caught inside- the air wouldn't be able to circulate so well. But then, if it's well POR'd, it shouldn't matter, I suppose.
I'd like to put some sort of baffle there, but I'd be nervous using sealant. I might go and look in the local hardware shop for plastic coping and such.
no i dident seal them in just filled slight gaps in arch enough to stop stones jumping above tubes,and yes its well POR15 & dinatroled.but i agree a removable shield would be better,ill just wait for my brother to design something like this for he,s one,hes great with things like this,then ill steal hes idea,he he he.
penno said:
Has anybody thought about spraying expanding foam the stuff plummers and builders use to fill gaps in brick work? it would fill the gaps along the chassis rails no problem. Hey presto no more por15 and waxoiling every year. what do think?
Dodgy.
Penno, I've had the idea- basically fill up the area so nothing gets in there. But- the risk... What happens if you miss a bit? You won't be able to see any problems until the whole thing falls apart. Not that you can see a great deal now :-) but you get the picture!
That's why I'd like to have a barrier there. That would allow air to circulate and water to drain out. The main problem of rust is because those stones get stuck in there and trap moisture.
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