IRS 9" Rear End Conversion S & Z Chassis (No More Broke Rear Ends!) - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

98golws6 · 03-03-2016, 01:38 PM

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.

98golws6 · 03-03-2016, 01:40 PM

Here are a few pictures

Benedict · 03-03-2016, 01:53 PM

bad ass work
that front camber gain in the last pic looks rough

[email protected] · 03-04-2016, 02:57 AM

What kind of 60's are you getting with it?

*brndck* · 03-04-2016, 05:54 AM

very cool to see new product!

slow92 · 03-04-2016, 10:31 AM

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.

KAT-PWR · 03-04-2016, 11:06 AM

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.

98golws6 · 03-21-2016, 07:11 AM

Quote:

Originally Posted by [email protected]

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.

Evo_1320 · 03-21-2016, 08:29 AM

this is a great thing. I want to get one too.

Boosted_ATL · 03-25-2016, 10:31 AM

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.

I6_Power · 08-23-2016, 10:30 AM

PM'd for more details...

EnvisionMore · 08-23-2016, 11:34 AM

Anymore updates on this?

*TheRealSy90* · 08-23-2016, 12:43 PM

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.

03-03-2016, 01:38 PM	#1
98golws6 Join Date: Apr 2011 Location: Concord, NC Posts: 17 Trader Rating: (1) Feedback Score: 1 reviews	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.

03-03-2016, 01:53 PM	#3
Benedict Zilvia Member Join Date: Oct 2005 Location: Whale's vagina Posts: 225 Trader Rating: (1) Feedback Score: 1 reviews	bad ass work that front camber gain in the last pic looks rough __________________

03-04-2016, 10:31 AM	#6
slow92 Zilvia Junkie Join Date: Jun 2008 Location: NV Posts: 423 Trader Rating: (16) Feedback Score: 16 reviews	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. __________________ Sr22 in the works

03-04-2016, 11:06 AM	#7
KAT-PWR Nissanaholic! Join Date: Dec 2011 Location: US Posts: 2,040 Trader Rating: (11) Rides Gallery: KAT-PWR Feedback Score: 11 reviews	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. __________________ MRP Manufacturing

03-25-2016, 10:31 AM	#10
Boosted_ATL Join Date: Sep 2014 Location: Atlanta Age: 35 Posts: 31 Trader Rating: (0) Feedback Score: 0 reviews	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. __________________ 93 Silvia coupe LS1 with some stuff

03-04-2016, 02:57 AM	#4
[email protected] Join Date: Jan 2003 Location: chesapeake VA Posts: 46 Trader Rating: (0) Feedback Score: 0 reviews	What kind of 60's are you getting with it?

03-21-2016, 08:29 AM	#9
Evo_1320 Join Date: Mar 2016 Location: Johnson City Age: 35 Posts: 2 Trader Rating: (0) Feedback Score: 0 reviews	this is a great thing. I want to get one too.

08-23-2016, 10:30 AM	#11
I6_Power Join Date: Aug 2016 Location: Ohio Age: 31 Posts: 25 Trader Rating: (0) Feedback Score: 0 reviews	PM'd for more details...

08-23-2016, 11:34 AM	#12
EnvisionMore Leaky Injector Join Date: Apr 2015 Location: San Antonio, TX Posts: 61 Trader Rating: (0) Feedback Score: 0 reviews	Anymore updates on this?

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