IRS rear suspension

[LEMHEAD16]

I don't know if any body watches TRUCKS on spike, but they have an interesting project going on a B2200. They swapped the IRS from on 03/04 cobra into the rear of the truck+a SC mod motor. I'm sure the thing will be beast when it's done seeing as how they are on a TV budget!

It got me thinking about swapping the IRS from a 240 into my hardbody. The way they showed it doesn't make it look all that difficult, and I'm all for crazy and unique projects. I imagine it would make the HB handle like a dream.

Anybody know if it has been done before. I know I've seen an old Mazda truck with an IRS swap in some magazine before but can't find any info on it.

[StephenG]

It seems like I saw pics of a partly finished rear strut setup, maybe here on nico. You could do that in the rear and do mustang coilovers in the front. I wonder how Garage Miniz did their drift trucks?

[seang]

Even with the IRS, it seems the truck will have less torsional rigidity than the donor car. There is a thread in here from a while back with a VG30DETT and IRS swapped D21, I think it is in the pictures sticky, too.

[RT22]

A 240 or any Z with the IRS could do measure some at a junk yard look at mounting points. I would say beefing up the frame with a cross member or 2 and just adding in mounting points by welding and it could work. D21 has 2 piece drive shaft so keeping angles correct are easirer and making longer or shorter shaft is easier. if you can measure and weld it would be much cheaper but a good fab shop can do almost anything. I posted here once I would love to get a donor 350 or 370 new Z and put rear end 6 speed transmission and V6 in mine, 300 hp D21 with no turbo crap and 6 speed and IRS would be a hell of a truck. I love a Normally aspirated 300hp stock V6 would be awesome. Add some weight in bed for traction and off you go. If only i had the money

[Drafteddesign]

the ex-editor of Minitruckin' Mike Alexander had a mini that was set up with IRS in the rear. He had complete tubular suspension, air bag set-up, the whole 9 yards. If anyone has a collection of minitruckin' mags from about 2 years ago, there's prolly some pics in there. That's where I seen it

[seang]

D21 has 2 piece drive shaft

My 86.5 2wd std cab had one, but my 97 4x4 std cab has a one-piece.

[Arabrockermang]

If I were you I'd start with a J30 or Q45 already LSD and basically the same suspension I picked up an entire J30 rear suspension for $250 with only 70k miles on it but I used the spindles and diff outta it for a 240sx


Q45 is much beefier if you wanted to put a v8 or something all you really need is to figure out the geometry of the rear shock tower and copy it angles hieght etc and it would be really easy.


and if I went through all that work I'd do the front as well it would be not at all harder and make it actually really handle well plus matching lug patterns.

[bip2nelson]

There was a thread on here that I started Just a Hardbody about a year ago. I also have one on Tampa racing.com Just a Hardbody . We have a 97 Hardbody with a 1996 VQ30 t-70 turbo,350Z 6speed transmission, right hand drive and a full 240sx suspension front and rear. the rear struts have been placed through the bed of the truck. It can be done with a lot of bracing you have to cut the rear of the frame so the upper control arm has room for movement.