Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help




Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Diesel Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #16  
Old 04-08-2008, 11:48 PM
Ara T.'s Avatar
Registered User
 
Join Date: Sep 2004
Location: Santa Rosa, CA
Posts: 2,075
You should have laid some dynamat or its equivelant down.
__________________
1985 CA 300D Turbo , 213K mi
Reply With Quote
  #17  
Old 04-09-2008, 12:06 AM
bgkast's Avatar
Rollin' on 16s
 
Join Date: Dec 2005
Location: Vancouver WA
Posts: 6,528
I plan to use RAMmat in the future. Dynamat is overpriced.
__________________
1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine
Reply With Quote
  #18  
Old 04-09-2008, 07:01 AM
Registered User
 
Join Date: Sep 2007
Posts: 773
I did pull up the asphalt floor boards. Then cleaned and touched up the rust spots. I used B-Quiet. It was probably 1/2 of Dynamat and listed its sound deadening properties near Dynamats. I haven't seen the other makers list their sound deadening properties. I also did the fire wall. The ruber or plastic shell, I put 1/4 heat shield stuff. I should have used 1/8. I patched up the asphalt stuff and put some EVAP foam sheets to hold them together and to act as the faom layer it had. I cut the asphalt boards in sections. Once I got one section up with a scraper, the other sections were easier to pry up.
Tom
Reply With Quote
  #19  
Old 04-09-2008, 11:49 PM
bgkast's Avatar
Rollin' on 16s
 
Join Date: Dec 2005
Location: Vancouver WA
Posts: 6,528
I may have been a bit premature with my praise of POR-15. When installing the seat today I scuffed the POR-15 coat with the seat track and it peeled up easily. I sent the following email to POR-15:

To whom it may concern-

I recently used the POR-15 series of products on my 1979 Mercedes and am quite dissatisfied with the results. The POR-15 was used on the car’s floor panels as part of a rust repair job following welding in some patch panels. The surface was a mixture of paint, surface rust and bare steel. I cleaned and prepped the areas using Marine Clean and Metal Ready following the instructions on the packaging, then applied three coats of black POR-15 using a brush after through stirring of the product. Several days later when reinstalling the seats in the car one of the seat tracks impacted the POR-15 coating causing it to chip and peel. Further investigation revealed that the POR-15 coat could easily be pealed off with a finger nail. I have attached a photograph of the area. The surface of the area that has peeled is a combination of wire wheeled surface rust and original paint. Unfortunately it seems that the POR-15 did a better job sticking to my skin than the floor panels. Because the POR-15 has formed a “skin” with poor adhesion to the panel it seems that it will provide worse rust protection than standard paint because it will trap water against the metal and hid the rust rather than bubbling up as paint would do. I selected POR-15 because I did not want to worry about these areas rusting ever again, but it seems that I was mistaken.



I'm torn on what to do now. The POR-15 seems to have stuck quite well to the lid, so it is possible it has adhered better in other areas of the floor. I could try removing it but I think it would be time consuming. My other choice is to leave it and keep an eye on it. I am sick of this rust repair job and want the car to be drivable again so I really don't want to spend another month of weekends pealing and re-coating the area.
Attached Thumbnails
Want your Benz to last another 25 years? Remove the Asphalt from the floors.-dsc01943a.jpg  
__________________
1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine

Last edited by bgkast; 04-09-2008 at 11:59 PM.
Reply With Quote
  #20  
Old 04-09-2008, 11:59 PM
lietuviai's Avatar
Registered User
 
Join Date: Mar 2003
Location: SW WA
Posts: 5,741
Correct me if I am wrong but isn't the idea with POR 15 that it is to encapsulate the area that has rusted and create an anaerobic environment rendering the rust inactive.
I'm actually surprised that you could simply scrape it off with your fingernail. I've used it and I had a heck of a time getting it off areas I didn't intend to apply it to.
Something must have contaminated it.
__________________
DJ


84 300D Turbodiesel 190K with 4 speed manual sold in 03/2012
Reply With Quote
  #21  
Old 04-10-2008, 12:21 AM
Coming back from burnout
 
Join Date: Jun 1999
Location: in the Pacific Northwest
Posts: 2,274
I agree wholeheartedly



When I rebuilt my floor I deliberately didnt replace the asphalt. I also drilled several drain holes. For insulation I took those heavy rubber pads out of an old truck cut them to fit, but did not glue them down.....
Reply With Quote
  #22  
Old 04-10-2008, 12:32 AM
bgkast's Avatar
Rollin' on 16s
 
Join Date: Dec 2005
Location: Vancouver WA
Posts: 6,528
Quote:
Originally Posted by lietuviai View Post
I'm actually surprised that you could simply scrape it off with your fingernail. I've used it and I had a heck of a time getting it off areas I didn't intend to apply it to.
Me too. You should see my hands and arms. I did seem to stick quite well to the can's metal lid. I think I will do a test and see how it sticks to the rusty area I cut out. I REALLY want to be done with this repair, but I want it to be done right.
__________________
1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine
Reply With Quote
  #23  
Old 04-10-2008, 03:56 AM
jshadows's Avatar
Bob
 
Join Date: Jan 2006
Location: Paris, FR
Posts: 737
Quote:
Originally Posted by bgkast View Post
Me too. You should see my hands and arms. I did seem to stick quite well to the can's metal lid. I think I will do a test and see how it sticks to the rusty area I cut out. I REALLY want to be done with this repair, but I want it to be done right.
I've had mixed results with the product. The black on seat springs and an air cleaner cover worked great and stuck like paint should. I tried their silver on the lug bolts and just getting a coat to stick was an effort. Of course once a garage hit with an air hammer to change the tires it was all over. There was never any real adhesion to speak of.

I never complained about it since it was somewhat of a non-traditional use.

I think part of the problem is that POR-15 needs something to "stick" too. Smooth, clean metal doesn't seem like a good candidate for the product. In fact I think somewhere in their documentation it says it needs a bit of rust to stick. my 2 cents.
__________________
1982 300TD 210K miles ("The Replacement" aka "The Anvil") - SOLD
1979 300SD 245K miles (never ending project)
2007 Pinarello F3:13
1995 Ducati 916 (SOLD, sniff)
1999 Ducati 900SSie (SOLD)
Reply With Quote
  #24  
Old 04-10-2008, 10:55 AM
bgkast's Avatar
Rollin' on 16s
 
Join Date: Dec 2005
Location: Vancouver WA
Posts: 6,528
These floors were any thing but clean metal. I did hit the surface rust with a wire wheel before I applied it though.
__________________
1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 01:35 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page