Birty Dastards Jeep Club

Tech Forum => Workshop => Topic started by: bigjeepzj on July 26, 2011, 03:25:20 PM

Title: Uprating sills on my ZJ to rock crusher grade
Post by: bigjeepzj on July 26, 2011, 03:25:20 PM: I have been wanting to install some rock sliders on my ZJ for some time now.
But having a long arm lift some of the extra body bracing gets in the way of using any off the shelf types

So I thought of doing what the guy in the link as done

http://www.mallcrawlin.com/forum/showthread.php?12046-Rocker-cutting-outage&highlight=rock+slider+weld (http://www.mallcrawlin.com/forum/showthread.php?12046-Rocker-cutting-outage&highlight=rock+slider+weld)

and also give the long arm kit something better to bolt to

Current view of the under side of ZJ see blow

Welcome any advice you lot can give on any improvements or good reasons not to do it

thanks
Title: Re: Uprating sills on my ZJ to rock crusher grade
Post by: wildwood on July 26, 2011, 04:45:13 PM: Yup reckon that's the way to go........ I would have welded the cut top edge to seal things from getting packed with mud.
Maybe cut that top edge longer and joddle a bend in it to ease welding to the rectangle section. Would have to be more accurate with the disc cutter than the author of that tho :icon_twisted:

Good find.......... got to do similar to my GC tow rig as holes are starting to appear........... and my skills of welding tissue are not that great....... :jpshakehead:
Title: Re: Uprating sills on my ZJ to rock crusher grade
Post by: bigjeepzj on July 26, 2011, 05:03:51 PM: Quote from: wildwood on July 26, 2011, 04:45:13 PM
would have welded the cut top edge to seal things from getting packed with mud.
Maybe cut that top edge longer and joddle a bend in it to ease welding to the rectangle section.

yep good point was going to weld the top edge and seal it with urethane sealer
Title: Re: Uprating sills on my ZJ to rock crusher grade
Post by: Nosebolt on July 26, 2011, 05:32:31 PM: did something similar on my Trooper and Tim's old XJ that I think Ted ended up with had the same sort of mod
Title: Re: Uprating sills on my ZJ to rock crusher grade
Post by: 4tom on July 27, 2011, 02:07:01 AM: Have a look through this thread from Jeepforum

http://www.jeepforum.com/forum/f310/home-made-rock-sliders-1223930/ (http://www.jeepforum.com/forum/f310/home-made-rock-sliders-1223930/)

some good ideas with pictures that might be easier to addapt for your needs
Title: Re: Uprating sills on my ZJ to rock crusher grade
Post by: bigjeepzj on July 27, 2011, 09:41:24 PM: Quote from: 4tom on July 27, 2011, 02:07:01 AM
Have a look through this thread from Jeepforum

http://www.jeepforum.com/forum/f310/home-made-rock-sliders-1223930/ (http://www.jeepforum.com/forum/f310/home-made-rock-sliders-1223930/)

some good ideas with pictures that might be easier to addapt for your needs

thanks for the link
but think i will go with my first idea
Title: Re: Uprating sills on my ZJ to rock crusher grade
Post by: JamesH on July 28, 2011, 10:32:31 AM: I want to do the same with mine - same principle of an XJ so if you want any other picture guides try searching on NAXJA and other XJ sites. I'll stick mine out from the body more than the link you posted - or at least the tube step part because the body curves in and nice tight tucked in ones don't allow you to use them as tree sliders enough in my view - I made that mistake when I built my rock sliders.
Title: Re: Uprating sills on my ZJ to rock crusher grade
Post by: bigjeepzj on July 28, 2011, 11:12:51 AM: Good point was going to make sure that i don't use my doors as a tree slide :banghead:
Title: Re: Uprating sills on my ZJ to rock crusher grade
Post by: daggie on July 28, 2011, 06:35:10 PM: I installed rock rails on the xj it has 50x200mmx5mm wall box, the reason being 200 deep it mates with the inner cill = strength
Title: Re: Uprating sills on my ZJ to rock crusher grade
Post by: JamesH on July 28, 2011, 08:07:50 PM: rock rails in place of the sills Daggie or under them and against the pinch seam?
Title: Re: Uprating sills on my ZJ to rock crusher grade
Post by: daggie on July 29, 2011, 04:41:35 PM: :greggmo:
Title: Re: Uprating sills on my ZJ to rock crusher grade
Post by: greggmo on September 27, 2011, 10:34:11 PM: we have done rock sills on three xj's to date. 100x100x3mm box cap ended and welded in place of the sills. can be jacked under and works very well but you need to be able to weld and be brave with the angle grinder. i am sure there are pics of all three on here. anyone who wants em doin get in touch via pm for our best price. :greggmo:
Title: Re: Uprating sills on my ZJ to rock crusher grade
Post by: Bishops Finger on September 28, 2011, 12:04:54 AM: ZJ's...????
Title: Re: Uprating sills on my ZJ to rock crusher grade
Post by: wildwood on September 28, 2011, 11:22:14 AM: Mmmmnnn :jpshakehead: My ZJ has a nasty split rusty hole looking bit on the passenger side..... the side I didn't have to weld for the MOT last may :icon_sad:

So its 3m 40 of 100x100x4mm and 1m 60 of 50x50x4mm and some 4mm plate and off we go with the mig and disc cutter....... not in that order tho :icon_twisted:

Its either that or roll some thin 1 point whatever type body panel thickness steel to shape and try my very slowly developing tig skills on a repair???

Nope its disc cutter and MIg..... :icon_twisted: :icon_twisted: :icon_super: :icon_super:
Title: Re: Uprating sills on my ZJ to rock crusher grade
Post by: bigjeepzj on September 28, 2011, 01:07:26 PM: OMG what have I started
Title: Re: Uprating sills on my ZJ to rock crusher grade
Post by: Dave69 on September 28, 2011, 08:39:34 PM: a normal subject that is often talked about but rarely done.