Inner fender coating...what to use? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

stllookn · 05-06-2002, 02:47 PM

I just finished cleaning the old undercoat off my inner fenders and am impressed at how well this has protected the metal for all these years...both inner fenders are perfect! This will be Friday night cruiser so I am considering doing the shake and spray undercoating again. Other options would be Rhino Liner or some comparable product. When I stripped the old material off I used a little too much heat in a couple of spots and took it down to the bare metal. Should I sand and paint before undercoating?

------------------
'67 C10 Long fleet w/wheezebag 305 and TH400
'67 C10 Short stepside w/283 and a powerglide
400 small block with the Weiand Tower of Power looking for a home!

barn9 · 05-06-2002, 03:56 PM

I sandblasted my inner fenders, primed them, used the shake and spray undercoating, then when that was dry I sprayed the top side with a gun. Worked out well for me.

------------------[*]'71 Cheyenne, 402BB[*]Winfield, KS[*] http://barn9.freeservers.com

*Fast68Chevy* · 05-06-2002, 05:20 PM

having intact inner fenders is overrated :P

*Shane* · 05-06-2002, 05:33 PM

I am using Rattle Guard. It is like Rhino Liner and/or Line-X, but you can spray it yourself. This stuff is nice, not like the cheap stuff you can buy at Wal-Mart. It has about 4-5 different parts that have to be mixed, and it has to be sprayed through an undercoating gun. I had my doubts at first about this, but bought a kit to experiment on the bottom side of my cab. I changed my mind after spraying it. Once dry, this stuff is about 1/8"-3/16" thick.

I bought mine from this guy on eBay...here is a link to his current auctions.

http://cgi.ebay.com/ebaymotors/ws/eb...228990&r=0&t=0

hope this helps.......

------------------
Keep On Truckin'

Shane
Athens, Alabama

stllookn · 05-06-2002, 05:54 PM

Both of those sound good. I noticed some trucks at the Tacoma show this weekend that had standard undercoating on the inner fenders so if it is good enough for a show truck...hmmmm.

Fast68...running without inner fenders looks really cool! It rains too much here and I will probably get stuck out in the rain once or twice.

I wish to heck they would have undercoated the entire cab when this thing was new because it would have saved a good deal of rust and work if they had. My dad used to have his new cars double undercoated and now I know why. I have heard in the last few years dealers saying that the new cars won't rust and you don't need to undercoat! Well that might be true with the zinc plated sheet metal etc. but I feel like undercoating the he!! out of this thing for sound proofing and protection...it lasted 35 years...it can't be all that bad!

*Fast68Chevy* · 05-06-2002, 09:28 PM

dont get me started on rust rot and holes and missing metal, you think its bad out there well then,, come here, lol unless you consider missing bed floors, missing cab corners, inner and outer rockers, entire wheel arch lips, cab floors and door skins minor rust. let 67rphd1 show you some pics of rust here, hehehe

good luckm lookn

------------------
Randy- Lincoln, IL
randy@ccaonline.com 2177353230
*many GM parts bought, traded, or sold -am parting out: '81 Cutlass Supreme Brougham

current fleet: -71 C-10 350/CH465/3.07- basketcase, #1
-90 Cavalier 2.2L sky blue, driver, was free
-84 Z28 5.0L/700R4/3.73 daily driver
-84 Firebird/SE 2.8L/T-5/3.73/engine bad, project #2
-82 purple Trans Am, project #3
*Paint is overrated*
© RSS Enterprises 2000

stllookn · 05-07-2002, 12:21 AM

LOL...you are right...I could sell this stuff as surface rust in your area or the NE.

bobs409 · 05-07-2002, 06:37 AM

Ok, this may sound a bit wierd, but I found that roofing tar works wonders!

Many years ago, I bought a gallon of Wesleys rubberized brush on undercoating for about $10.00/gallon. When it came time to buy another can, I couldn't find it anywhere so I tested roofing tar. It looks and works exactly the same.

Now this isn't for a show truck but if you have a daily driver and are looking for some protection, this may be for you. And best of all, it's about $5.00 a gallon at Lowes!

Just a note on the spray undercoating. This stuff looks great when you spray it on but it doesn't last very long. You'll be recoating every other year at best. The roofing tar holds up! You could use the spray stuff on top of the tar for a better finish though.

------------------
63 Impala*66 Chevelle SS*69 Chevelle*69 C10 Stepside*71 Cheyenne 20*72 Chevelle

Parts for sale:
http://www.angelfire.com/trek/mr409/items4sale.html

[This message has been edited by bobs409 (edited May 07, 2002).]

69 longhorn · 05-07-2002, 08:34 AM

This one will "get you"........I tossed a set of cherry front inners when I built the tilt front end on the longhorn! Excess weight.......GONE!!!!!!! .....69

stllookn · 05-07-2002, 09:53 AM

69...I knew all you Longhorn guys were weird...LOL! I saw a perfect inner at the swap meet for $10...driver's side of course. Trying to take weight of these trucks is like rearranging the deck chairs on the Titanic!

I have heard of guys undercoating with roofing tar and the stuff is durable and does last if you can stand the smell and mess.

bobs409 · 05-07-2002, 01:40 PM

Yeh, don't wear a white shirt when applying it! LOL I get slopped up when I use the spray on stuff!

The roofing tar will be dry by the next day so if you can handle the smell when applying it, your good to go. (it's not that bad)

------------------
63 Impala*66 Chevelle SS*69 Chevelle*69 C10 Stepside*71 Cheyenne 20*72 Chevelle

Parts for sale:
http://www.angelfire.com/trek/mr409/items4sale.html

Longhorn Man · 05-07-2002, 01:43 PM

Which way tit you toss those inner fenders? Are they still there?

------------------
'69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man
I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it.
FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite.
If you need a pic posted, E-mail me at longhornmail@yahoo.com
My name is Andy...not Randy...I'm in Ohio...Not Illinois...close enough?
Columbus Ohio

69 longhorn · 05-07-2002, 05:26 PM

Nope,sorry Longhornmail......I just dont have the room to save too many pcs,So had to get rid of the tin that I didnt use. I have plans to build a set of aluminum inners.....but like the rest of the truck,Im gainin on it......but still have a ways to go! Anybody know how many tin mods it takes for a full custom?.......69longhorn.

05-06-2002, 05:54 PM	#5
stllookn Saving 1 truck at a time! Join Date: Aug 2001 Location: Kent, WA Posts: 6,465	Both of those sound good. I noticed some trucks at the Tacoma show this weekend that had standard undercoating on the inner fenders so if it is good enough for a show truck...hmmmm. Fast68...running without inner fenders looks really cool! It rains too much here and I will probably get stuck out in the rain once or twice. I wish to heck they would have undercoated the entire cab when this thing was new because it would have saved a good deal of rust and work if they had. My dad used to have his new cars double undercoated and now I know why. I have heard in the last few years dealers saying that the new cars won't rust and you don't need to undercoat! Well that might be true with the zinc plated sheet metal etc. but I feel like undercoating the he!! out of this thing for sound proofing and protection...it lasted 35 years...it can't be all that bad! __________________ '68 C20 Longhorn 50th Anniversary 400/TH400 '68 C20 Longhorn 50th Anniversary 468/TH400w/buckets '72 C20 Halfhorn (Longhorn w/o cab and front clip) '69 Flxible Cruiser (look up ugly in the dictionary)

05-07-2002, 12:21 AM	#7
stllookn Saving 1 truck at a time! Join Date: Aug 2001 Location: Kent, WA Posts: 6,465	LOL...you are right...I could sell this stuff as surface rust in your area or the NE. __________________ '68 C20 Longhorn 50th Anniversary 400/TH400 '68 C20 Longhorn 50th Anniversary 468/TH400w/buckets '72 C20 Halfhorn (Longhorn w/o cab and front clip) '69 Flxible Cruiser (look up ugly in the dictionary)

05-07-2002, 06:37 AM	#8
bobs409 1969 Custom 30 wrecker Join Date: Sep 2001 Location: Pottsville, Pa Posts: 2,611	Ok, this may sound a bit wierd, but I found that roofing tar works wonders! Many years ago, I bought a gallon of Wesleys rubberized brush on undercoating for about $10.00/gallon. When it came time to buy another can, I couldn't find it anywhere so I tested roofing tar. It looks and works exactly the same. Now this isn't for a show truck but if you have a daily driver and are looking for some protection, this may be for you. And best of all, it's about $5.00 a gallon at Lowes! Just a note on the spray undercoating. This stuff looks great when you spray it on but it doesn't last very long. You'll be recoating every other year at best. The roofing tar holds up! You could use the spray stuff on top of the tar for a better finish though. ------------------ 63 Impala66 Chevelle SS69 Chevelle69 C10 Stepside71 Cheyenne 20*72 Chevelle Parts for sale: http://www.angelfire.com/trek/mr409/items4sale.html [This message has been edited by bobs409 (edited May 07, 2002).] __________________ Bob 63 Impala 283/PG/3.36 (under restoration) 66 Impala 327/PG/3.36 66 Chevelle SS 409/M22/3.55 69 Chevelle 307/PG/3.08 (future restoration) 69 C10 short stepside 454/TH350/3.73 69 Custom 30 tow truck 350/4 spd/4.10 (resto done, CRUISIN TIME!) 71 Cheyenne 20 fleetside 350/4 spd/4.10 71 Chevelle 6/PG/3.08 72 Chevelle 454/M21/4.10

05-07-2002, 08:34 AM	#9
69 longhorn Registered User Join Date: Aug 2001 Location: rock island,il,usa Posts: 5,382	This one will "get you"........I tossed a set of cherry front inners when I built the tilt front end on the longhorn! Excess weight.......GONE!!!!!!! .....69 __________________ http://community.webshots.com/user/hotrodhorn

05-07-2002, 09:53 AM	#10
stllookn Saving 1 truck at a time! Join Date: Aug 2001 Location: Kent, WA Posts: 6,465	69...I knew all you Longhorn guys were weird...LOL! I saw a perfect inner at the swap meet for $10...driver's side of course. Trying to take weight of these trucks is like rearranging the deck chairs on the Titanic! I have heard of guys undercoating with roofing tar and the stuff is durable and does last if you can stand the smell and mess. __________________ '68 C20 Longhorn 50th Anniversary 400/TH400 '68 C20 Longhorn 50th Anniversary 468/TH400w/buckets '72 C20 Halfhorn (Longhorn w/o cab and front clip) '69 Flxible Cruiser (look up ugly in the dictionary)

05-06-2002, 02:47 PM	#1
stllookn Saving 1 truck at a time! Join Date: Aug 2001 Location: Kent, WA Posts: 6,465	Inner fender coating...what to use? I just finished cleaning the old undercoat off my inner fenders and am impressed at how well this has protected the metal for all these years...both inner fenders are perfect! This will be Friday night cruiser so I am considering doing the shake and spray undercoating again. Other options would be Rhino Liner or some comparable product. When I stripped the old material off I used a little too much heat in a couple of spots and took it down to the bare metal. Should I sand and paint before undercoating? ------------------ '67 C10 Long fleet w/wheezebag 305 and TH400 '67 C10 Short stepside w/283 and a powerglide 400 small block with the Weiand Tower of Power looking for a home! __________________ '68 C20 Longhorn 50th Anniversary 400/TH400 '68 C20 Longhorn 50th Anniversary 468/TH400w/buckets '72 C20 Halfhorn (Longhorn w/o cab and front clip) '69 Flxible Cruiser (look up ugly in the dictionary)

05-06-2002, 03:56 PM	#2
barn9 Half a bubble off! Join Date: Jun 2000 Location: Winfield, Ks, USA Posts: 5,588	I sandblasted my inner fenders, primed them, used the shake and spray undercoating, then when that was dry I sprayed the top side with a gun. Worked out well for me. ------------------[]'71 Cheyenne, 402BB[]Winfield, KS[*] http://barn9.freeservers.com __________________ Just call me LB. '71 Cheyenne, 402BB, hauls blondes, brunettes, or redheads.

05-06-2002, 05:20 PM	#3
Fast68Chevy Account Suspended Join Date: May 2000 Location: IL Posts: 0	having intact inner fenders is overrated :P

05-06-2002, 05:33 PM	#4
Shane Account Suspended Join Date: Jun 2000 Location: over yonder Posts: 14,270	I am using Rattle Guard. It is like Rhino Liner and/or Line-X, but you can spray it yourself. This stuff is nice, not like the cheap stuff you can buy at Wal-Mart. It has about 4-5 different parts that have to be mixed, and it has to be sprayed through an undercoating gun. I had my doubts at first about this, but bought a kit to experiment on the bottom side of my cab. I changed my mind after spraying it. Once dry, this stuff is about 1/8"-3/16" thick. I bought mine from this guy on eBay...here is a link to his current auctions. http://cgi.ebay.com/ebaymotors/ws/eb...228990&r=0&t=0 hope this helps....... ------------------ *Keep On Truckin'* Shane Athens, Alabama

05-06-2002, 09:28 PM	#6
Fast68Chevy Account Suspended Join Date: May 2000 Location: IL Posts: 0	dont get me started on rust rot and holes and missing metal, you think its bad out there well then,, come here, lol unless you consider missing bed floors, missing cab corners, inner and outer rockers, entire wheel arch lips, cab floors and door skins minor rust. let 67rphd1 show you some pics of rust here, hehehe good luckm lookn ------------------ Randy- Lincoln, IL randy@ccaonline.com 2177353230 many GM parts bought, traded, or sold -am parting out: '81 Cutlass Supreme Brougham current fleet: -71 C-10 350/CH465/3.07- basketcase, #1 -90 Cavalier 2.2L sky blue, driver, was free -84 Z28 5.0L/700R4/3.73 daily driver -84 Firebird/SE 2.8L/T-5/3.73/engine bad, project #2 -82 purple Trans Am, project #3 Paint is overrated* © RSS Enterprises 2000

05-07-2002, 01:40 PM	#11
bobs409 1969 Custom 30 wrecker Join Date: Sep 2001 Location: Pottsville, Pa Posts: 2,611	Yeh, don't wear a white shirt when applying it! LOL I get slopped up when I use the spray on stuff! The roofing tar will be dry by the next day so if you can handle the smell when applying it, your good to go. (it's not that bad) ------------------ 63 Impala66 Chevelle SS69 Chevelle69 C10 Stepside71 Cheyenne 20*72 Chevelle Parts for sale: http://www.angelfire.com/trek/mr409/items4sale.html __________________ Bob 63 Impala 283/PG/3.36 (under restoration) 66 Impala 327/PG/3.36 66 Chevelle SS 409/M22/3.55 69 Chevelle 307/PG/3.08 (future restoration) 69 C10 short stepside 454/TH350/3.73 69 Custom 30 tow truck 350/4 spd/4.10 (resto done, CRUISIN TIME!) 71 Cheyenne 20 fleetside 350/4 spd/4.10 71 Chevelle 6/PG/3.08 72 Chevelle 454/M21/4.10

05-07-2002, 01:43 PM	#12
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Which way tit you toss those inner fenders? Are they still there? ------------------ '69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it. FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite. If you need a pic posted, E-mail me at longhornmail@yahoo.com My name is Andy...not Randy...I'm in Ohio...Not Illinois...close enough? Columbus Ohio

05-07-2002, 05:26 PM	#13
69 longhorn Registered User Join Date: Aug 2001 Location: rock island,il,usa Posts: 5,382	Nope,sorry Longhornmail......I just dont have the room to save too many pcs,So had to get rid of the tin that I didnt use. I have plans to build a set of aluminum inners.....but like the rest of the truck,Im gainin on it......but still have a ways to go! Anybody know how many tin mods it takes for a full custom?.......69longhorn. __________________ http://community.webshots.com/user/hotrodhorn



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