Undercoating Remove or Not?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

JustOneTruck · 08-31-2005, 01:00 PM

Hi all I`m asking about this lovely black crap that is sprayed all over the underside of the engine compartment so it wont rust .Now I know its their to protect the metal and all .But I have this question stuck in my head Do I want it to look really nice and shiney or dull and sticky all over. Ive worked on it a few times and I spend more time cleaning my tools. If you want pictures let me know I only cleaned the radiator support top with with my bellie and shirt

It sure looks nice . Do I go clean or do I take the black crap off ??

86 GMG · 08-31-2005, 02:22 PM

remove it and repaint it with a smooth shinney paint

Scrubby · 08-31-2005, 04:57 PM

I think it needs to come off. The trick is heat. I used a heat gun (but I have heard of using a propane torch) and a putty knife on my '56 wagon. It is a pain in the ass job, but you can't have it right until you get it done.

Matt_305 · 09-01-2005, 01:11 PM

If you live here in nova scotia and use your truck it's a necessity to have under coat but to take it off to work on it or if it's a show truck,or never driven in bad weather conditions take it off it is awfully grimy and ugly, brake cleaner and a rag will tackle it like nothing else. Oh and my only fear with heat is it can catch on fire and it burns fairly hot.

JustOneTruck · 09-01-2005, 03:27 PM

Its true the hotter it is the easier it is to clean off or if you use a cleaner or Diesel fuel,WD-40, and o yea a few rools of towels to wipe it up. I found if I work on it after I get home from work to the heat from the motor has loosened it up a little and a little hot sunshine to helps.

So I did clean the front above the radiator .Its clean as if I just painted it. So no painting it so far.

Thanks for everyones help.

BIG82 · 09-01-2005, 03:40 PM

I think you would like it to look like this. I just got done and I am very happy I did it.

bigblock73 · 09-01-2005, 10:44 PM

Take it off.

86swb · 09-02-2005, 10:05 PM

It will be messy but take it off. Undercoating is good for maby the frame but not in the engine compartment. Take it off.

08-31-2005, 01:00 PM	#1
JustOneTruck Registered User Join Date: Feb 2005 Posts: 88	Undercoating Remove or Not?? Hi all I`m asking about this lovely black crap that is sprayed all over the underside of the engine compartment so it wont rust .Now I know its their to protect the metal and all .But I have this question stuck in my head Do I want it to look really nice and shiney or dull and sticky all over. Ive worked on it a few times and I spend more time cleaning my tools. If you want pictures let me know I only cleaned the radiator support top with with my bellie and shirt It sure looks nice . Do I go clean or do I take the black crap off ??

08-31-2005, 02:22 PM	#2
86 GMG Registered User Join Date: Apr 2005 Location: Tulsa Oklahoma Posts: 943	remove it and repaint it with a smooth shinney paint __________________ square body trucks an addiction or an investment either way they consume all my extra time and money

09-01-2005, 01:11 PM	#4
Matt_305 Registered User Join Date: Dec 2003 Location: Nova Scotia, Canada Posts: 102	If you live here in nova scotia and use your truck it's a necessity to have under coat but to take it off to work on it or if it's a show truck,or never driven in bad weather conditions take it off it is awfully grimy and ugly, brake cleaner and a rag will tackle it like nothing else. Oh and my only fear with heat is it can catch on fire and it burns fairly hot. __________________ 1981 GMC Sierra 1500 4.1L I6 1985 GMC Sierra 1500 5.0L V8 (Parts Truck) Last edited by Matt_305; 09-01-2005 at 01:14 PM.

09-01-2005, 03:40 PM	#6
BIG82 The Higher The Better Join Date: Jan 2005 Location: Springfield, Ohio Posts: 67	I think you would like it to look like this. I just got done and I am very happy I did it. Attached Images

09-01-2005, 10:44 PM	#7
bigblock73 yeller Join Date: Oct 2001 Location: Twin Cities Posts: 13,826	Take it off. __________________ Jeff 73-87.com 73-87.com Facebook page 73-87 cab corner 6x9 speaker brackets for sale 67-72 cab corner speaker brackets for sale 47-54 cab corner speaker brackets for sale

08-31-2005, 04:57 PM	#3
Scrubby Check out GMTrucks.org Join Date: Sep 2003 Location: Boise, Id Posts: 284	I think it needs to come off. The trick is heat. I used a heat gun (but I have heard of using a propane torch) and a putty knife on my '56 wagon. It is a pain in the ass job, but you can't have it right until you get it done.

09-01-2005, 03:27 PM	#5
JustOneTruck Registered User Join Date: Feb 2005 Posts: 88	Its true the hotter it is the easier it is to clean off or if you use a cleaner or Diesel fuel,WD-40, and o yea a few rools of towels to wipe it up. I found if I work on it after I get home from work to the heat from the motor has loosened it up a little and a little hot sunshine to helps. So I did clean the front above the radiator .Its clean as if I just painted it. So no painting it so far. Thanks for everyones help.

09-02-2005, 10:05 PM	#8
86swb Born a Chevy Man Join Date: Apr 2005 Location: Navarre, Florida Posts: 10,221	It will be messy but take it off. Undercoating is good for maby the frame but not in the engine compartment. Take it off. __________________ John or 86 (Viet Nam combat Vet-BIG RED ONE) '65-'66 1986 Chevy SWB Silverado 1984 Chevy Longbed Silverado New Kia Sportage (Wife's car and she loves it) CHEVY, American made w/pride! If you can read this, YOU NEED TO THANK A TEACHER! If you can read this in ENGLISH, PLEASE THANK A SOLDIER! GOD BLESS AMERICA AND BLESS OUR FIGHTING TROOPS



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