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Old 03-03-2016, 01:38 PM   #1
98golws6
 
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IRS 9" Rear End Conversion S & Z Chassis (No More Broke Rear Ends!)

Hey guys/gals,

Wanted to share our build with everyone. Clockwork Motorsports and myself partnered with The Driveshaft Shop (DSS) to bring you a bolt in 9 inch option to your s or z chassis'.

Quick background...I got tired of going to the track and breaking stub shafts left and right. I was wasting money traveling and essentially taking myself out of the competition or ruining a fun track day. I had an upgraded diff, DSS half shafts and DSS driveshaft, but there is not an upgrade for the stub shafts (the small shafts in the side of the R200). I even went as far as having the stub shafts heat treated but to no avail.

After talking with The Driveshaft Shop, we had a game plan. I went back to Clockwork Motorsports to discuss with my crew chief. Being a mechanical engineer, he started drawing up his ideas in 3d CAD. Long story short, we developed a bolt in solution utilizing our modified subframes. We took a DSS 9" IRS Housing and modified it to mount directly to the stock rear subframe mounts. The front support is modified due to how large the 9" is and getting the correct pinion angle. The tubular support is braced to handle the shock and loads thrown at it. The pinion support was drawn up in cad as pictured below. The DSS 9" axle stubs are made of 300M material rate for over 1400hp.

I have ran this exact setup for 1.5 years with no issues making over 800hp/tq. It has seen street use, dragstrip use, sticky tires, track and drift use.

We are finalizing prices for everything, but each case will depend on the parts you want:
9" 3rd member casings style
gear ratio
which level DSS Axles
Steel/carbon/aluminum/chomoly Driveshaft
differential
powdercoated/painted/bare
etc

Message or post with any questions or inquiries.
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Old 03-03-2016, 01:40 PM   #2
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Here are a few pictures
Attached Images
File Type: jpg 2.jpg (73.9 KB, 350 views)
File Type: jpg 1.jpg (105.3 KB, 292 views)
File Type: jpg 3.jpg (104.9 KB, 326 views)
File Type: jpg 4.JPG (144.8 KB, 320 views)
File Type: jpg IMG_3272.jpg (369.6 KB, 285 views)
File Type: jpg Photo Sep 08, 2 39 00 PM.jpg (97.5 KB, 309 views)
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Old 03-03-2016, 01:53 PM   #3
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bad ass work
that front camber gain in the last pic looks rough
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Old 03-04-2016, 02:57 AM   #4
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What kind of 60's are you getting with it?
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Old 03-04-2016, 05:54 AM   #5
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very cool to see new product!
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Old 03-04-2016, 10:31 AM   #6
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This is awesome. I would be interested in how much this would cost when you guys figure all of that out. It would be more versatile than a q45 rear differential as far as allowing the use of different rear end gear ratios and not breaking axles.
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Old 03-04-2016, 11:06 AM   #7
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Glad to see this has made its way to s-chassis. My buddy has been running this in his 750hp (I think makes more now) drag FD rx7. It has held up great.
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Old 03-21-2016, 07:11 AM   #8
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What kind of 60's are you getting with it?
I was running a drag radial and car was setup for drift but I was in the 1.6's. Plan on running a bigger tire this year as drift season allows.
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Old 03-21-2016, 08:29 AM   #9
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this is a great thing. I want to get one too.
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Old 03-25-2016, 10:31 AM   #10
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I'm interested to know once pricing is available. G force wants way to much for there 9" kit. v8 and drag radials my J30 diff/axles are a time bomb.
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Old 08-23-2016, 10:30 AM   #11
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PM'd for more details...
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Old 08-23-2016, 11:34 AM   #12
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Anymore updates on this?
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Old 08-23-2016, 12:43 PM   #13
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What kind of clutch type LSD's are available for this differential?
Can it be done with the S13 subframe? Some people don't want the "benefits" of the s14 pickup points.
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