Fabrication & builders section. All fabrication posts go here.
XJ/MJ/ZJ/WJ Only projects go here. Questions belong in modified tech.

"MRA" Offroad bumper build

Thread Tools
 
Search this Thread
 
Old 12-19-2012, 05:57 AM
  #61  
Junior Member
 
mastrblastr's Avatar
 
Join Date: Dec 2012
Location: B.C. Canada
Posts: 65
Likes: 0
Received 0 Likes on 0 Posts
Year: 1993
Model: Cherokee
Engine: 4.0 L
Default

Nice job! Thats a lot of cutting with a zipcut and minigrinder. Good thinking with your choice of materials to keep your cutting to a minimum. If you are planning on skirting it, do it now. Welding on stuff thats been painted is gross----even after you remove the paint!

I will be building my bumper out of 3/16" plate, but I have a plasma cutter to do all my cutting!!
Old 12-28-2012, 06:28 PM
  #62  
CF Veteran
Thread Starter
 
Marks2000XJ's Avatar
 
Join Date: Feb 2011
Location: Georgia
Posts: 1,048
Likes: 0
Received 0 Likes on 0 Posts
Year: 2004
Model: Grand Cherokee (WJ)
Engine: 4.0 Inline 6
Default

Originally Posted by mastrblastr
Nice job! Thats a lot of cutting with a zipcut and minigrinder. Good thinking with your choice of materials to keep your cutting to a minimum. If you are planning on skirting it, do it now. Welding on stuff thats been painted is gross----even after you remove the paint!

I will be building my bumper out of 3/16" plate, but I have a plasma cutter to do all my cutting!!
Yeah I think I have convinced myself to go ahead and skirt it now. It has gotten kind of cold outside now which has caused me to lose motivation at the moment.
Old 12-29-2012, 10:02 AM
  #63  
Junior Member
 
mastrblastr's Avatar
 
Join Date: Dec 2012
Location: B.C. Canada
Posts: 65
Likes: 0
Received 0 Likes on 0 Posts
Year: 1993
Model: Cherokee
Engine: 4.0 L
Default

I hear ya. Lots of snow on the ground here but temps are still just above freezing so it's not too bad to work outside. I have mine about 3/4 done, all tacked together and almost ready to pull it off for welding. Yours is looking good man!! Keep at it!
Old 01-06-2013, 06:03 PM
  #64  
CF Veteran
Thread Starter
 
Marks2000XJ's Avatar
 
Join Date: Feb 2011
Location: Georgia
Posts: 1,048
Likes: 0
Received 0 Likes on 0 Posts
Year: 2004
Model: Grand Cherokee (WJ)
Engine: 4.0 Inline 6
Default

Originally Posted by bigredlimited88
what was the initial length you cut it to before you bent the pieces in? I am going to pick up a piece of angle on my way home to do this same bumper.
I have not visited this thread in a while and just saw your post. I will get you the dimensions as soon as I get a chance.

Originally Posted by Sno_Blynd
would i be able to get dimensions on the mounting tabs? and you said 1/4 in 3x5 angle right? looks good. lookin at makin one like this. love the look of a low profile bumper
Yes, I will get them to you as soon as I can. Sorry for the late reply. I just saw this.

Originally Posted by ldub100
Good looking bumper, nice work. Jerry has a point but you can add strength by welding in a gusset on the back side at the bends and should be strong enough.
Believe me, there is nothing weak about this bumper! It is one stout beast. But yes, I did plan on welding some angle brackets on the back to re-enforce the bends.
Old 01-06-2013, 06:07 PM
  #65  
CF Veteran
Thread Starter
 
Marks2000XJ's Avatar
 
Join Date: Feb 2011
Location: Georgia
Posts: 1,048
Likes: 0
Received 0 Likes on 0 Posts
Year: 2004
Model: Grand Cherokee (WJ)
Engine: 4.0 Inline 6
Default

Originally Posted by JerrytheJeep
on the front? Hrrrm I could be completely wrong but let me draw something. If im thinking correctly you just reduced the strength of those bends a little. here's my awesome paint representation. taking away material and then re welding it is definitely the way to go i just think you did it on the wrong side, the fact that it is angle iron and that you welded the top is great, that will do wonders. what i would do is bend up a plate to match the contour and weld that in with rosette welds and stitching, or add a fat gusset. just my .o2 because i love the look and affordability of it over making one massive thing out of box or plating up down left right etc, and id hate for you to damage it down the trail because of when someone like me with very little bit of fab experience (or more) coulda said ey, check that out. Cant wait to see it painted!

so number 1 is what i think you said and number 2 is what would probably be better. see how when it bends it stretches the thinner part of the metal is all there is? i know you said you welded over it, i just think having the metal butt up against itself is better. if you do a contoured reinforcement just bend it regularly (vise and a bfh!) drill the holes first if you are going to rosette weld it.

damn I need a welder haha then i can put my welds where my mouth is and more metal where my rig is...
The reason for scoring it from the front was because it was harder to try and do from the rear. But, the top 3 inch piece is butted together and welded which will keep the bend from getting more bent upon impact. I also plan on putting some angle pieces on the back side to re-enforce the bends.

Believe me, if anything happens to this bumper it would be a miracle. It is one stout mule.
Old 01-06-2013, 06:12 PM
  #66  
CF Veteran
Thread Starter
 
Marks2000XJ's Avatar
 
Join Date: Feb 2011
Location: Georgia
Posts: 1,048
Likes: 0
Received 0 Likes on 0 Posts
Year: 2004
Model: Grand Cherokee (WJ)
Engine: 4.0 Inline 6
Default

I have the bumper pulled off now and ready for final welding. Just need to quit being lazy and get it done. Probably won't be able to paint it until Spring due to the cold weather though.

It may be March before this is completely done and installed....uggh...
Old 01-14-2013, 11:18 PM
  #67  
Junior Member
 
Lil Beast's Avatar
 
Join Date: Oct 2012
Location: whittier, ca
Posts: 36
Received 0 Likes on 0 Posts
Year: 1989
Model: Cherokee
Engine: 6 cyl
Default

Awesome looking bumper dude!!! I've looked at tube and square bumpers, but yours looks a helluva lot better. Mine will do double duty, for wheeling and to keep a-holes from bouncing off my bumper to parallel park. I live in SoCal and watched a guy bounce off my front bumper parallel parking and get pissed at ME for scratching his bumper on his rice burner!!! Oh yeah, forgot to tell ya I have spikes on my front bumper. LOL!! A bumper like yours would make them not even think of touching it!!!
Old 01-21-2013, 06:49 PM
  #68  
CF Veteran
Thread Starter
 
Marks2000XJ's Avatar
 
Join Date: Feb 2011
Location: Georgia
Posts: 1,048
Likes: 0
Received 0 Likes on 0 Posts
Year: 2004
Model: Grand Cherokee (WJ)
Engine: 4.0 Inline 6
Default

In case anyone was wondering how my tow hook set up was going to work, here is a couple shots of it. I incorporated the main part into the frame brackets as seen at the beginning of the thread. Then added 1/4" pieces on both sides and welded all the way around to bumper and original tabs. I don't think they are going anywhere.

I just have to drill the final 3/4" holes for the tow hooks. Already have pilot holes drilled to get started.

"MRA" Offroad bumper build-cam00016.jpg

You can see the skirt being added here in the second pic. Still need to add the angled and end pieces. I am working on it.....

"MRA" Offroad bumper build-cam00018.jpg

Last edited by Marks2000XJ; 01-21-2013 at 06:51 PM.
Old 01-21-2013, 07:21 PM
  #69  
CF Veteran
 
JerrytheJeep's Avatar
 
Join Date: Aug 2011
Location: San Jose
Posts: 1,994
Likes: 0
Received 7 Likes on 7 Posts
Year: 89
Model: Cherokee
Engine: 4.0 I6
Default

Looks great! take your time with it, the last thing you want to do is rush it and overlook something
Old 02-09-2013, 01:10 AM
  #70  
Member
 
Xj moo's Avatar
 
Join Date: Jan 2013
Posts: 153
Likes: 0
Received 0 Likes on 0 Posts
Model: Cherokee
Default

I hope u don't mind but I've looked at bumpers for days and this thing is sweet I'm gonna steal your idea and build one identical to it I love it u did great work ill be sure to give u credit on my build thread this thing is nice
Old 02-11-2013, 10:35 AM
  #71  
Junior Member
 
mastrblastr's Avatar
 
Join Date: Dec 2012
Location: B.C. Canada
Posts: 65
Likes: 0
Received 0 Likes on 0 Posts
Year: 1993
Model: Cherokee
Engine: 4.0 L
Default

Don't forget to add in some gussets to beef up that bottom skirt. Not trying to hack your thread, but here's a picture of how I gussetted the inside of my bumper. Makes that skirt pretty beefy for sliding over stuff without bending the skirt.

Old 02-11-2013, 12:49 PM
  #72  
Senior Member
 
Luke95's Avatar
 
Join Date: Nov 2012
Location: Plymouth CT
Posts: 523
Likes: 0
Received 0 Likes on 0 Posts
Year: 1988
Model: Cherokee
Engine: 4.0L
Default

Subbed this is pretty good!
Old 02-13-2013, 01:33 PM
  #73  
CF Veteran
 
1ABrian's Avatar
 
Join Date: May 2010
Location: New Hampshire
Posts: 1,013
Likes: 0
Received 1 Like on 1 Post
Year: 1997
Model: Grand Cherokee
Engine: 4.0
Default

watchin this build. Nice work bud
Old 02-17-2013, 02:45 PM
  #74  
Newbie
 
Codiss's Avatar
 
Join Date: Jan 2013
Location: Spokane Washington
Posts: 2
Likes: 0
Received 0 Likes on 0 Posts
Year: 1989
Model: Wagoneer
Engine: 4.0 I6
Default

subbed!! i want this exact bumper for my 89! plus a small bull bar for looks! great build i will have questions on how to perfect mine to look like yours!!
Old 03-30-2013, 09:03 PM
  #75  
CF Veteran
Thread Starter
 
Marks2000XJ's Avatar
 
Join Date: Feb 2011
Location: Georgia
Posts: 1,048
Likes: 0
Received 0 Likes on 0 Posts
Year: 2004
Model: Grand Cherokee (WJ)
Engine: 4.0 Inline 6
Default

I am still working on my bumper. Kind of quit on it over the winter. It is warming up now so progress will resume shortly.

Mastrblastr, I have gussetts installed for the skirt but thanks for the input.


Quick Reply: "MRA" Offroad bumper build



All times are GMT -5. The time now is 04:01 AM.