awd on 2wd dyno

[benchandler]

I have heard that replacing a coupler for you lsd will disable the rear drive shaft, making it possible to dyno on a 2wd dyno.

Has anyone heard this or know any other way that this could work.

Thnx

 

[LandoAWD]

Do a search on VCE.

Also, in the Lounge of the forums section of www.carolinadsm.com , there is a write up with pics.

 

[Dannyboy1201]

also TRE-spec Center differential spool is good shit, and easy to install. Its only 235.00

 

[kpt4321]

There is no "coupler" you can replace that will disable the driveshaft.

You can replace the center diff with a spool or a welded one, and then you have to drop the driveshaft.


....Kyle T.
93 TSi AWD "TURBO4"
14b - 12.8 @ 108

 

[KRAZYKOREAN]

Originally posted by kpt4321
There is no "coupler" you can replace that will disable the driveshaft.

You can replace the center diff with a spool or a welded one, and then you have to drop the driveshaft.


....Kyle T.
93 TSi AWD "TURBO4"
14b - 12.8 @ 108

Umm wrong..please do your homework before you post..its called a Viscous Coupling Eliminator its very easy to install and takes around 30 mins heres the link for yeah and its only 150.0 bucks to. which I know here is cheaper to buy this and go to a fwd dyno instead of using a awd dyno.. http://www.machv.com/viscoupel.html

 

[candela]

 

[KRAZYKOREAN]

Originally posted by candela

 

[kpt4321]

You're a douchenozzle.

A VCE does NOT *disable* the driveshaft. It simply ELIMINATES the viscous coupling, which keeps the front output shafts (axles) and the rear output shaft (driveshaft) spinning at the same rate, regardless of load. While this does allow you to REMOVE the driveshaft and run in FWD mode (which you can't do with the VC) it certainly does NOT disable the driveshaft.

So, you should probably do some more of that homework.

Candela, I know you know this, where were you man?

....Kyle T.
93 TSi AWD "TURBO4"
14b - 12.8 @ 108

{Edited because I started a sentence with a lower case letter. Doh.}

 

[snoopnoon]

Yes this is correct kyle, GRNDSM can tell you all about this, he has what is called a "switchable transfer case" with a welded VC. This means he keeps his VC but uses a special transfer case to go from 4WD not AWD to FWD.

 

[kpt4321]

Noon is right, and he also has a good point. Installing a VCE will disable the ability of the stock drivetrain to change the power split between the front and rear wheels. However, even with a VCE, power still goes to all 4 corners of the car. In order to go to FWD, one still has to remove the power from the rear wheels, by dropping the driveshaft, or removing the transfer case, or getting a switchable transfer case.


...Kyle T.

 

[KRAZYKOREAN]

Hmm but he simply asked if a awd can go on a fwd dyno..which is possible..also it still possible to drive on it like a fwd...so how does it not elimnate the driveshaft..its does..meaning disable not replace but disables the shaft..so its not in use...did you read what he asked...Or maybe you were just thinking differently then he was or I...but yes it does disable and it does allow you to dyno it on a fwd dyno..sooo

 

[Defiant]

Originally posted by kpt4321
Installing a VCE will disable the ability of the stock drivetrain to change the power split between the front and rear wheels.

Change? Que?

 

[DELTA_Rotary]

I just dynoed my car this way. I got a VCE from Team Rip then popped it in dropped the driveshaft and hopped on the dyno and made my pulls in FWD.

 

[kpt4321]

KRAZYKOREAN, you specificially posted that there was a way to "disable the driveshaft" and then hold me to "do my homework."

The fact of the matter is, a VCE does NOT disable the driveshaft. It allows you to remove the driveshaft and transfer the full power output to the front wheels, but it does in no way disable the driveshaft. You said it did, and then insulted me. You're wrong.

Now, the VCE would work for him, that is correct. However, I specifically stated that it would work, I simply negated your point that it "disables" the driveshaft.

In short: a VCE allows you to remove the driveshaft, to convert your car to FWD mode, to put on the dyno. However, if you install a VCE in your vehicle, it will NOT disable the driveshaft. It simply allows you to remove it, which you cannot do with a stock VC.

...Kyle T.

 

[snoopnoon]

Yah and in my opinion the VCE is not worth the money considering you can not use it on the street. it is like having a 4wd truck with all four wheels locked. The outside tires jump or skip their way around the corner. If you just get the switchable transfer case all it takes is less than 2.5 mins to switch between FWD and AWD

 

[kpt4321]

If you have the switchable transfer case, you still need a method of keeping the front and rear wheels turning at the same rate, you can't convert a car to FWD without that. However, a VCE is not your only option for this, you can use a welded center diff, or a welded VC.

No matter what you do, a car that is capable of being converted to FWD will behave differently on the street from a car with a stock VC and center diff (or 4-spider).

....Kyle T.

 

[KRAZYKOREAN]

Whatever your still not understanding me...and the way you are wording and explaining it...are 2 different things...so whatever...but the answer is basically yes you can turn your awd to fwd for a fwd dyno..discussion closed..

 

[Intrusive97gsx]

Originally posted by snoopnoon
Yah and in my opinion the VCE is not worth the money considering you can not use it on the street. it is like having a 4wd truck with all four wheels locked. The outside tires jump or skip their way around the corner. If you just get the switchable transfer case all it takes is less than 2.5 mins to switch between FWD and AWD

You must have a switchable TRANNY and transfer case, otherwise you still have to use a VCE. Anyways a VCE doesn't take long install.

VCE install and Driveshaft drop.
http://carolinadsm.com/cgi-bin/ikonboard.cgi?;act=ST;f=2;t=2651

 

[herostar]

that link doesn't work... can anyone else find it? I tried searching but couldn't find anything...

 

[Colossus]

I'm not trying to get into this fight, but come on now kyle. This arguement is a little redundant. Sure, the VCE would allow the removal of the driveshaft, ok, great. Now what person is going to assume you can put the VCE in, and then install the driveshaft, and the shaft not work? I'm hoping most people are above that level of common sense. So, leave it be, and not in an insulting way, stop being a smartass about it.

 

[kpt4321]

I'm not trying to get into this fight, but come on now kyle. This arguement is a little redundant. Sure, the VCE would allow the removal of the driveshaft, ok, great. Now what person is going to assume you can put the VCE in, and then install the driveshaft, and the shaft not work? I'm hoping most people are above that level of common sense. So, leave it be, and not in an insulting way, stop being a smartass about it.

I suppose if you want to get involved, you know what's coming to you.

Here is the original question:

I have heard that replacing a coupler for you lsd will disable the rear drive shaft, making it possible to dyno on a 2wd dyno.

Please, tell me where this coupler is that DISABLES the rear driveshaft.

As a matter of fact, if you install a VCE, that driveshaft is "more enabled" than it freaking was beforehand, since the who drivetrain is locked together. While beforehand in some situations you could rotate the front tires without the rears spinning (if they were loaded enough), there is ZERO chance of that happening with a VCE unless you break transmission parts to do it.

You'll notice that the arguement started after krazykrackhead said that I was "wrong" and that I needed to "do my homework." Please, explain to me why ned to do my homework since I don't think that installing a VCE will disable the rear driveshaft.

Installing a VCE locks the center diff's output, such that you can remove the driveshaft and still have the proper power delivery. I'd really like to hear the explination of how that is the same as disabling the driveshaft.

 

[L2RTSiAWD]

The question was answered no need for any further flaming or arguing.

 

[kpt4321]

The question was answered no need for any further flaming or arguing.

I'm done now, I promise.

 

[herostar]

The question was answered no need for any further flaming or arguing.

Ok, got that... I feel kinda knoobish asking this, but I still don't understand and would like too. If someone could explain this in easy-to-understand terms that'd be great.

 

[amx69]

Ok, I get that the VCE lock the shafts so front to rear are fixed and equal, but how would that hurt street driving. The car has a differential in the rear to determine how to drive the rear tires correctly around a corner. The front is the same too?

Someone, please am I missing something here???

Thanks,
Jason
'90 5spd AWD TURBO