Un0Turb0-WP

So i've waded thru the millions of topics posted on this forum wrt removing sound deadning and tar... but these all refer to the stuff they stick on the inside of the car...

I want to know how can i remove the underbody tar and the stuff they spray into the wheel wells etc...???
This is for a race car btw not a street car so dont worry im not voiding any manufactururs warrentee lol

Any help and suggestions will be greatly appreciated

racecarpete

I've always wondered how much weight all that underbody spray is. My buddy from Malaysia said that shops would sandblast the underbodies to get rid of everything otherwise crawl under there with a chisel and hammer and have at it.

Un0Turb0-WP

Yeah, I was thinking sandblasting as well, but i've read a few articles that say it doesnt work. they recommended water blasting, but thats not available here where i stay...

I dont mind getting under the car and doing the work... the majority of the car is stripped now, maybe remove the rest like the doors and tailgate and stick the car on one of those rotating stands that look like a rotisserie and turn the chassis on its side and work like that

i was hoping tho that there is an easier method

dfoxengr

yeah those are infact called rotisseries (sp.) i would try to get a hold of some dry ice, and then chisel. will make it less sticky.

swanny

Grab a torch and a putty knife, be sure to wear a respirator.

Race Egr

http://www.eastwoodco.com they sell some stuff that is specifically for it.

slammed_93_hatch

enough dry ice from the top and it will take car of the bottom too. Happened on my car, and another car when we were using dry ice to take out the sound deading stuff. it will need to sit for longer though and you need alot of it, or do it on a cool day

DaveF

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by NAPIER &raquo;</TD></TR><TR><TD CLASS="quote">http://www.eastwoodco.com they sell some stuff that is specifically for it.</TD></TR></TABLE>

that eastwood **** DONT work, belive me ive tried..

the best result ive got, getting the tar off.... is using a grinder, but you have to put a wire wheel on the grinder, also, if you dip the wire wheel in epoxy, the wires stay on a bit longer. i can clean up a whole front wheel well, in about 30 minutes.. its messy, but god damn does it work like a charm. we did this method on a race car we built last year.

on my car, i had it sand/media/bead blasted, cost me 850.00. and it didnt get all the **** off that i had wanted off. so take that into consideration.

Race Egr

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dturbocivic &raquo;</TD></TR><TR><TD CLASS="quote">

that eastwood **** DONT work, belive me ive tried..

the best result ive got, getting the tar off.... is using a grinder, but you have to put a wire wheel on the grinder, also, if you dip the wire wheel in epoxy, the wires stay on a bit longer. i can clean up a whole front wheel well, in about 30 minutes.. its messy, but god damn does it work like a charm. we did this method on a race car we built last year.

on my car, i had it sand/media/bead blasted, cost me 850.00. and it didnt get all the **** off that i had wanted off. so take that into consideration. </TD></TR></TABLE>

Haha I wasnt sure if it would or not i kinda think it wouldnt ,but ive never tried just use a torch and wire wheel

1 2 NV

i agree the wire wheel worked for me too. i didnt do the whole underside though, but yeah it was ****** messy. after that i tried sweeping it up, bad idea, it likes to "streak" the floor of the garage. make sure to do it on a cool day so it stays "harder".

CVC9216

you need this:

http://buy1.snapon.com/catalog...talog

DaveF

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CVC9216 &raquo;</TD></TR><TR><TD CLASS="quote">you need this:

http://buy1.snapon.com/catalog...talog</TD></TR></TABLE>


ive seen this before... but since its an air powered tool, this thing would be putting most people's compressors through hell. the damn compressor would be running for hours at a time.(i know my compressor hates being run for long periods of time) i still belive the electric grinder is the way to go.. maybe snap-on makes these style wheels for regualar angle grinders?

tony1

Don't sand blast it! It works, but you'll have sand falling out of your car on the track for months!! Don't ask how i know.

I don't know an easy way, that **** is messy!!

DaveF

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tony1 &raquo;</TD></TR><TR><TD CLASS="quote">Don't sand blast it! It works, but you'll have sand falling out of your car on the track for months!! Don't ask how i know.

I don't know an easy way, that **** is messy!!</TD></TR></TABLE>

ahhahha, i know all about that. there's all kinds of media/whatnot in my rockers, i think i got most out of it though... (hopefully)

therealpoorboy

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tony1 &raquo;</TD></TR><TR><TD CLASS="quote">I don't know an easy way, that **** is messy!!</TD></TR></TABLE>

there is 1 real easy way, cut the whole floor out and do a firewall back half job

other than that many nights where spent with a propane torch and a chisel just scrapping away.

KFMRC

The easiest way to take care of this is to have the body dipped. This process will remove every last bit of anything except metal. Al the bondo undercoating paint will be gone and the body will be absolutely bare. Have worked on several cars that this has been done to and it is great. There is a place around the allentown PA area that does it . I will post a follow up with the name and number as soon as I can get it. This costs about $800 but is well worth it for an all out "HEADS UP" car where every last little bit counts.
A torch and a scraper is the only other way that I know of . Warm it up and it will be much easier to scrape. Just like you see them do when they scrap the rubber off of the track surface. Do as good a job as possible and then burn the rest off or use a solvent.

shortyz21

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by KFMRC &raquo;</TD></TR><TR><TD CLASS="quote">The easiest way to take care of this is to have the body dipped. This process will remove every last bit of anything except metal. Al the bondo undercoating paint will be gone and the body will be absolutely bare. Have worked on several cars that this has been done to and it is great. There is a place around the allentown PA area that does it . I will post a follow up with the name and number as soon as I can get it. This costs about $800 but is well worth it for an all out "HEADS UP" car where every last little bit counts.
A torch and a scraper is the only other way that I know of . Warm it up and it will be much easier to scrape. Just like you see them do when they scrap the rubber off of the track surface. Do as good a job as possible and then burn the rest off or use a solvent.</TD></TR></TABLE>

the easiest way? dip your ******* car? YEAH THATS EASY AND CHEAP! lol

i gota go with the guys suggestion of a torch and putty knife. fastest way and ive done it.

KFMRC

If you are building a really serious car then the car will be completely stripped down to a bare body. At that point the easiest and best way is to have the body dipped. You are starting off with a used body that has road grime undercoating seam sealer oil body filler(maybe) and some of the sealers are not within reach of a scraper. The other thing is that there will be no paint on the body so the car will only have on paint job on it and you can weld anywhere without grinding or breathing in a bunch of smoke. Yes maybe $800 or so dollars doesn't sound cheap but the quality of the finished car will be just a little better for sure and allot more pleasant to work on. Gary Gardella's (honda) is one of the cars that got dipped. Oh by the way the dipping process I am talking about is not the same as what they used to do years ago. It is not acid dipping making the panels thinner it only removes everything but steel.

VWVORTEX

lol.. forget a snap on tool, dry ice, just good old fashion elbow grease. Plus its good for you to get in a couple days of hard work on your car... lol..

seriously thow, just a couple chisels, a torch(eltric start/push start/trigger) and goto town

2point2

I barrowed a torch similar to this off of my hick friend. Didn't come with the cool back straps though.. 20-30 seconds with this and then I'd grab the angle grinder quick. Comes off like nothing. Just got to watch the heat, you will set your car on fire pretty easy. It comes off the easist when the tar is almost on fire.. (i had a fire extinguisher ready but the tar never flames for more than a quick second)

I had the poor CRX (stripped to nothing) chained from the front crossmember mount and sitting on it's butt. did the whole front end and most of the underbody.. then i hung the car from the back tow hooks and did the rear end. if possible, do this outside!!! it gets smokey.

I did this in the winter so i wearing an old snow suit for construction workers (completely ruined now), a hat, goggles, gloves, boots and a scarf to cover the rest of my face.. i looked like a cold weather terrorist. lol

use a propane torch and smaller wire wheels to get to the hard to reach areas.

easy.

Un0Turb0-WP

Thanks for the suggestions guys, KFMRC I would love to have the chassis dipped cos its totally stripped now, nothing more i can remove... It is going to be a serious race car for track racing. Unfortunatelly there doesnt seem to be a place here in my city that can do this... otherwise i would definitally have this done... so my next best bet is good ole manual labour lol.. Will see how it goes otherwise i might have to send the car up country to a plce that does do it.

BTW not sure if you recieved my IM, did you recieve payment successfully?


Thanks!!
Bevan

Timmah!!

What about aircraft stripper?

SilverDc2

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by azroth &raquo;</TD></TR><TR><TD CLASS="quote">What about aircraft stripper?</TD></TR></TABLE>

last time i accidental got some brake cleaner on it and it rapidly came off just a bit, came off with no hessitation

im assuming with aircraft stripper should be a breeze

Qwik_XR

Ive used a small propane torch and a 4" and a 2" puddy knife to remove it..
For reference, I removed all of the stuff from one of my Merkur XR4Ti's, inside and out, and it weighed in at roughly 60lbs :eek:

89crx90

In my body shop we do a lot of restorations on older cars...most of which are undercoated... we use the torch method with a putty knife. Remove as much as possible and then have it media blasted to finish cleaning it up. If you dont remove as much as possible first the media blasting usually doesnt do much to the undercoating...thats what its made for- to absorb rock(sand) hits.

I would recomend the torch and scraper first..and if possible some blasting or use a bunch of lacquer thinner and pile of rags after that