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Stronger IRS?

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Old Oct 1, 2012 | 11:08 AM
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Originally Posted by Corvette4Life87
I still think it is possible to do a C5 or C6 rear end in a C4.
you'd have to chop out the transmission tunnel and reconfigure it to make it wider to accommodate the transaxle. That would leave you no room for the seats.

the fact is I don't think a C6 differential is any stronger than the C4.

Last edited by Tom400CFI; Oct 1, 2012 at 11:10 AM.
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Old Oct 1, 2012 | 11:08 AM
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Originally Posted by STEVEN13
Hello,

Not trying to Hi Jack...But-do you have any photos of the exhaust with the Watts Linkage? I just purchased a Strange 9" with Alum Center for my 92. I may go with a TriAngulated 4 link (to elminate any locator).

Thanks,
Steve
Here are some pictures of my setup. http://www.facebook.com/media/set/?s...1&l=ef6337ba7c

I raced a hillclimb this weekend and had a blast I had the third fastest time for the hill this weekend. I usaully autocross the car. This is with the solid rearend in the car. http://www.youtube.com/watch?v=1k2s-...e_gdata_player

Last edited by thetoy; Oct 1, 2012 at 06:46 PM.
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Old Oct 1, 2012 | 03:58 PM
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Originally Posted by thetoy
Here are some pictures of my setup. http://www.facebook.com/media/set/?s...0714708&type=3

I raced a hillclimb this weekend and had a blast I had the third fastest time for the hill this weekend. I usaully autocross the car. This is with the solid rearend in the car. http://www.youtube.com/watch?v=1k2s-...e_gdata_player
Thanks but the link comes up as--This content is currently unavailable.

The hillclimb looks cool-Nothing like that on Long Island.

Steve

Last edited by STEVEN13; Oct 1, 2012 at 04:02 PM.
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Old Oct 1, 2012 | 04:21 PM
  #64  
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A low 7 second IRS

http://www.nmcadigital.com/2012/09/26/fastest-ls/

I'm sure they spent big bucks.
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Old Oct 1, 2012 | 04:48 PM
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I understand what you all are saying it will cost and be a big pain in the *** to do for such a noob. And I appreciate all your opinions and thoughts, I will still save some dough and go for that IRS. All of you may not agree and I understand you would do what is more affordable and reasonable. But I still strive to have the perfect car for me, and be unique. Again Thank you all for being apart of this thread and giving thoughts.
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Old Oct 1, 2012 | 04:58 PM
  #66  
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Originally Posted by Corvette4Life87
I still think it is possible to do a C5 or C6 rear end in a C4. Just a little complicated, street shop inc did a c5 irs in a c3. And here is a picture of the set up in a C3 I'm sure

That is a Gen3/Gen4 Viper M50 center with C6 gear for the rest of it...

I've been talking to them about what it would take for a Gen1/Gen2 Viper D44 to have as a bolt-in.

They aren't interested...said I could modify the batwing mount points for their billet carrier...have to move them inboard about 3" each side.

I'm not interested in that either...pushes me into an "altered frame" class.

These people just don't get it...there is a NEED for a bolt-in high strength IRS for the C4's. I would buy it in a heartbeat if the price was right, but they won't even entertain it.

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Old Oct 1, 2012 | 05:35 PM
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Originally Posted by 1991Z07
That is a Gen3/Gen4 Viper M50 center with C6 gear for the rest of it...

I've been talking to them about what it would take for a Gen1/Gen2 Viper D44 to have as a bolt-in.

They aren't interested...said I could modify the batwing mount points for their billet carrier...have to move them inboard about 3" each side.

I'm not interested in that either...pushes me into an "altered frame" class.

These people just don't get it...there is a NEED for a bolt-in high strength IRS for the C4's. I would buy it in a heartbeat if the price was right, but they won't even entertain it.

Not to "nit-pick" BUT I believe you need to educate yourself between C5 and C6 suspension components.! The image in this thread is done with C5 suspension components and "Conestoga wheels"! I don't know that I've ever seen the differential referred to as an M50 except in one internet build report, it's a 226mm super 44 internally.

I'd be interested in documenting the M50 source!

Last edited by WVZR-1; Oct 1, 2012 at 06:42 PM.
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Old Oct 1, 2012 | 06:30 PM
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you have lost me on this thread, so I am going to ask, what makes this setup any better then the standard c4 dana 44 setup. Its my understanding that the internals are the same.
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Old Oct 1, 2012 | 06:41 PM
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Originally Posted by 93 ragtop
you have lost me on this thread, so I am going to ask, what makes this setup any better then the standard c4 dana 44 setup. Its my understanding that the internals are the same.
The material in the pinion area of the housing and the support of the housing at the pinion front essentially is the difference. There have been refinements in the differential itself but none that can be incorporated into the C4 D44 with the exception of the 226mm ring gear packages that are out there. When purchasing a 226mm ring/pinion package a person needs to make sure they buy one with 3/8" ring gear bolts. Later super 44 builds are 7/16" and maybe 2 - 3 years ago CMC/Mopar actually went to 1/2" ring gear bolts on the super 44 used in Jeep etc.

You might consider a "pinion snubber"!
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Old Oct 1, 2012 | 06:47 PM
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Originally Posted by STEVEN13
Thanks but the link comes up as--This content is currently unavailable.

The hillclimb looks cool-Nothing like that on Long Island.

Steve
Try it now.
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Old Oct 1, 2012 | 06:51 PM
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Originally Posted by 93 ragtop
you have lost me on this thread, so I am going to ask, what makes this setup any better then the standard c4 dana 44 setup. Its my understanding that the internals are the same.
The internals are not completely "the same". While close, the Viper D44 is rated for WAYYYY more power/torque than the stock C4 D44.

One of the biggest things is their case is WAY thicker than our D44's, with strength added in the right places to keep it intact. Also, the front tabs, solidly mounted to the vehicle, prevent the snout from moving at all. I've seen turbo Gen2 Vipers with >1000 RWHP launch with slicks repeatedly with their D44's (stock), and never an issue with them.

OUR D44's internally could probably hold their own...but the case is crap. There isn't enough meat and webbing around the snout to keep it in one piece. Tom's Differential's were working on a billet version at one time, but they dropped that due to cost.

Originally Posted by WVZR-1
Not to "nit-pick" BUT I believe you need to educate yourself between C5 and C6 suspension components.! The image in this thread is done with C5 components and "Conestoga wheels"! I don't know that I've ever seen the differential referred to as an M50 except in one internet build report, it's a 226mm super 44 internally.

I'd be interested in documenting the M50 source!
Direct from Tray Walden @ Street Shop Inc.

It is a Gen III/IV Viper M50 with C5/6 Corvette outer suspension.
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Old Oct 1, 2012 | 07:06 PM
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Originally Posted by 1991Z07
Direct from Tray Walden @ Street Shop Inc.
I guess that's the "house" option code - interesting!


C5 or C6 suspension components can be used and there are reasons for the use of one or the other. The image in this thread is C5 stuff.
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Old Oct 1, 2012 | 09:06 PM
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Originally Posted by thetoy
Try it now.
Got it-Thanks!

That Watts set-up looks nice and I see the exhaust is below the rear housing. I spoke with Art Morrision and saw on their website the comparison of the watts and the triangluated 4 link. Both systems appear to be close in terms of handling. When I get mine completed I will start a thread with photos. If you dont mind what spring rate in the rear.

Thanks again!
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Old Oct 1, 2012 | 10:42 PM
  #74  
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Originally Posted by 1991Z07
One of the biggest things is their case is WAY thicker than our D44's, with strength added in the right places to keep it intact. Also, the front tabs, solidly mounted to the vehicle, prevent the snout from moving at all.
How does the snout move with the c-beam bolted to it? The case being weaker is 100% believable for me, but snout movement? If anything, I'd think a little flex would cushion the blow to the housing. Not that I'd want any flex, but...
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Old Oct 1, 2012 | 10:44 PM
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Originally Posted by STEVEN13
Got it-Thanks!

That Watts set-up looks nice and I see the exhaust is below the rear housing. I spoke with Art Morrision and saw on their website the comparison of the watts and the triangluated 4 link. Both systems appear to be close in terms of handling. When I get mine completed I will start a thread with photos. If you dont mind what spring rate in the rear.

Thanks again!
Were still working on the spring rates for the car. I started with 170# then tryed 350 much better, then last weekend I ran 550# springs for the hillclimb. They felt great but I have not autocrossed with the 550's yet I did with both other springs and I think I'm staying with the 550's. I still need to figure out the front end springs yet. If you watch the takeoff of the video you can see the front end raising every time I shift. I have a completely stock front end on the car. I just bought a 32 mm swaybar for the front and I'm going to get a heavier spring up front. Also I plan on getting the spc A arms so I can get more neg camber up front.
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Old Oct 2, 2012 | 12:20 AM
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Originally Posted by Tom400CFI
How does the snout move with the c-beam bolted to it? The case being weaker is 100% believable for me, but snout movement? If anything, I'd think a little flex would cushion the blow to the housing. Not that I'd want any flex, but...
Look at most of the D44 failures, and you'll see they break where the snout and the main part of the casing meet.

This is fairly typical:


Internally, they are great.

Externally, they don't hold up to lots of torque abuse.
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Old Oct 2, 2012 | 03:43 AM
  #77  
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Originally Posted by 93 ragtop
you have lost me on this thread, so I am going to ask, what makes this setup any better then the standard c4 dana 44 setup. Its my understanding that the internals are the same.
Irrespective of any differences in the diff head / casing / gears ,
the later Vette suspensions are double wishbone so the halfshaft is not a stressed member as it in in a C4
where it performs the task of being the upper "wishbone" of the rear suspension as well as transmitting power to the wheels
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Old Oct 2, 2012 | 06:43 AM
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[QUOTE=1991Z07;1581972860]Look at most of the D44 failures, and you'll see they break where the snout and the main part of the casing meet.



Internally, they are great.

Externally, they don't hold up to lots of torque abuse.[/
QUOTE]


That has not been my experience. Ironically I have never broke a u-joint, axle stub etc. Mine have all been internal failures. Usually starting with axle-spider gear failures, clutch pack failures, and in some cases when not catching the axle-spider gear failure soon enough, breaking ring and pinion gears and the case. BTW this has not been a 1 time thing for me, I have broke it at least 5 times. FWIW I know of other members who have had the same problems, but again we are usually drag racing with slicks

Last edited by 93 ragtop; Oct 2, 2012 at 07:30 AM.
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Old Oct 2, 2012 | 07:19 AM
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Nice sounding mill there thetoy. Care to share about your engine?

Id think if the case was strengthened and the pinion cant move the stress just takes it out on the gear assy and everything attached to it. Rigid mounting like that will find more and more weak links lol.

Its like using stiff or solid mounts on a trans and motor eventually the trans case splits, has to be some "give" to things.

Last edited by cv67; Oct 2, 2012 at 07:36 AM.
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Old Oct 2, 2012 | 07:28 AM
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[QUOTE=WVZR-1;1581969950]The material in the pinion area of the housing and the support of the housing at the pinion front essentially is the difference. There have been refinements in the differential itself but none that can be incorporated into the C4 D44 with the exception of the 226mm ring gear packages that are out there. When purchasing a 226mm ring/pinion package a person needs to make sure they buy one with 3/8" ring gear bolts. Later super 44 builds are 7/16" and maybe 2 - 3 years ago CMC/Mopar actually went to 1/2" ring gear bolts on the super 44 used in Jeep etc.

You might consider a "pinion snubber"![/
QUOTE]

Dave, couldnt a lot of the case weakness be overcome with the car creations case? Also, would it be possible to use the viper case, but move the internals, axles etc from the c4 into it, and then make a mount to support the front using the viper wings on the case? Im also assuming the viper case would bolt to the c4 batwing.
The pinion snubber is something that Will has been working with on his, but trying to keep the viberation from coming into the cabin has been a challenge. His is braced off of his rollbar.
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