In midst of engine swap, how to deal with engine bay / firewall rust? Pics included. - JeepForum.com

 
LinkBack Thread Tools
post #1 of 9 Old 04-16-2012, 01:32 PM Thread Starter
Alheim
Registered User
1995 YJ Wrangler 
 
Join Date: Apr 2002
Location: NYC
Posts: 518
In midst of engine swap, how to deal with engine bay / firewall rust? Pics included.

So the title says it all. I've got the motor out, I've got the engine bay cleaned, and I've got plenty of rust spots & bubbles, especially at the firewall where it is penetrated by bolts, screws, or hoses. Now's the time to take care of these, while I have easy access.

I was thinking of hitting all rust spots with a wirebrush in my drill, then using some sort of heavy-duty primer (epoxy?) to stop the rust. I'd like to avoid any topcoats. I don't care what it looks like, since it's underhood. What would you guys suggest?

Some pics below. Cheers!

The engine bay / firewall was covered in an oil slick before I cleaned it:



Typical rust:





One of the bolts that holds the fender to the grille. Not much rust yet, but I could see it getting worse. Anything to lube these bolts with during reassembly?



No motor!




'95 YJ 123bhp 4-banger powerhouse.
UPDATE: 2.5L ENGINE RETIRED; she was still running strong at 212,000mi.
4.0 swap in progress.

Last edited by Alheim; 04-16-2012 at 01:34 PM. Reason: Fixed images.
Alheim is offline  
Sponsored Links
Advertisement
 
post #2 of 9 Old 04-16-2012, 01:36 PM
timatoe
Registered User
 
timatoe's Avatar
1990 YJ Wrangler 
 
Join Date: Aug 2006
Location: Grass Valley California
Posts: 14,835
Chassis Saver

Quote:
Originally Posted by George Orwell
We sleep safe in our beds because rough men stand ready in the night to visit violence on those who would do us harm.
timatoe is offline  
post #3 of 9 Old 04-16-2012, 03:16 PM
40dog
Registered User
1988 YJ Wrangler 
 
Join Date: Mar 2010
Location: ny mountains
Posts: 437
Coat all bolts with never seize before re install . Chassis saver the rough rusty stuff but be care full with chassis saver on smooth metal it needs some thing to get a hold of and on smooth metal chassis saver will peel off in sheets . Rough it up good with 120-180 grit before applying to get a good tooth for it to attach to. I like chassis saver but it has its limits.
40dog is offline  
post #4 of 9 Old 04-16-2012, 03:55 PM Thread Starter
Alheim
Registered User
1995 YJ Wrangler 
 
Join Date: Apr 2002
Location: NYC
Posts: 518
Thanks. I'll consider Chassis Saver, but I'm still open to other suggestions. Think that wire-wheel prep is sufficient for Chassis Saver, or would you hit it with rough sandpaper as well?

'95 YJ 123bhp 4-banger powerhouse.
UPDATE: 2.5L ENGINE RETIRED; she was still running strong at 212,000mi.
4.0 swap in progress.
Alheim is offline  
post #5 of 9 Old 04-16-2012, 04:18 PM
giggityjeeper
Registered User
1990 YJ Wrangler 
 
Join Date: May 2007
Location: British Columbia
Posts: 4,022
if ya dont get the surface rust off it will just bubble more...... remove the bolts etc, either wire wheel or wrapper wheel on a grinder, and get to metal, prime it good, sand smooth and I woul dpaint the whole fire wall black or rhino line it or shassis saver it then, but it hs to be metal..... the rust will just rebubble under whatever you cover it with

Started with some rust repairs ended in a SOA...

http://www.jeepforum.com/forum/f12/h...-jeep-1050879/

family roll bar swap/upgrade..

http://www.jeepforum.com/forum/f12/f...grade-1054753/

1990 YJ. SOA, OME 36R 3.5" lift springs, OME 5/8 greasable shackles, OTT high steer, Custom cage, team Rush, Posi, 33 TSL swampers
giggityjeeper is offline  
post #6 of 9 Old 04-16-2012, 04:25 PM
40dog
Registered User
1988 YJ Wrangler 
 
Join Date: Mar 2010
Location: ny mountains
Posts: 437
wire knot wheel works good .
40dog is offline  
post #7 of 9 Old 04-16-2012, 04:38 PM
giggityjeeper
Registered User
1990 YJ Wrangler 
 
Join Date: May 2007
Location: British Columbia
Posts: 4,022
Quote:
Originally Posted by 40dog View Post
wire knot wheel works good .
its VERY abbrasive tho, if he wants a smooth finish you would have to prime and resand lots with sandpaper or have sanding marks under the paint, if just using chassis saver this would work, as its thick and you wont see the marks

Started with some rust repairs ended in a SOA...

http://www.jeepforum.com/forum/f12/h...-jeep-1050879/

family roll bar swap/upgrade..

http://www.jeepforum.com/forum/f12/f...grade-1054753/

1990 YJ. SOA, OME 36R 3.5" lift springs, OME 5/8 greasable shackles, OTT high steer, Custom cage, team Rush, Posi, 33 TSL swampers
giggityjeeper is offline  
post #8 of 9 Old 04-16-2012, 04:52 PM
40dog
Registered User
1988 YJ Wrangler 
 
Join Date: Mar 2010
Location: ny mountains
Posts: 437
nothing is one step .Wheel it then scuff with 180 then 2 coats high build primer scuff with red scotch brite or 320-400 grit shoot some paint on it.


40dog is offline  
post #9 of 9 Old 04-16-2012, 04:59 PM
40dog
Registered User
1988 YJ Wrangler 
 
Join Date: Mar 2010
Location: ny mountains
Posts: 437
frame covered with 2 coats chassis saver
40dog is offline  
Reply

Tags
rust proofing , rust repair

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.



Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
Help repairing rust! She may be terminal. (Pics Included) negreac TJ Wrangler Technical Forum 15 09-23-2011 08:48 PM
89 258 4.2L engine swap progress and questions many pics johnrezz YJ Wrangler Technical Forum 1 10-12-2008 07:25 PM
what do the engine codes on the firewall mean? jeep7691 YJ Wrangler Technical Forum 2 10-05-2008 09:13 PM
Started on my rust repair...pics included paintballjerry TJ Wrangler Technical Forum 5 05-03-2006 09:39 PM
Engine Swap Progress (pics) smok3y YJ Wrangler Technical Forum 7 11-03-2003 07:45 PM

Posting Rules  
You may post new threads
You may 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 Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome