RWD DCCD?

[pl0x]

A mate is wanting to know, can you pull out the front drive shafts and put the diff controller to fully lock to make the car 100% rwd?

I read something on rs25 saying that yes it would be rwd, but im not sure.

Thoughts?

[funkytown]

logic tells you it would.

cant see why it wudnt.. 50/50 locks the center solid

[pl0x]

 funkytown said:

logic tells you it would.

cant see why it wudnt.. 50/50 locks the center solid

but would 100% power go to the rear? or would 50% power be spinning nothing?

[Koom]

It will drive but its not a proper "locked" centre per se. As it still is a clutch pack it needs to have an initial speed diferential between the front and rear before the clutch can lock up. So in the long run, I wouldn't do it. If you want RWD, buy another centre diff housing and weld the diff in that and bolt it on.

[pl0x]

 Koom said:

It will drive but its not a proper "locked" centre per se. As it still is a clutch pack it needs to have an initial speed diferential between the front and rear before the clutch can lock up. So in the long run, I wouldn't do it. If you want RWD, buy another centre diff housing and weld the diff in that and bolt it on.

Good to know.

These where my thoughts also

[Koom]

The DCCD diff and its housing is worth alot more if its not rooted by someone trying to RWD it

May as well sell it and go rwd and make money in the process.

[pl0x]

 Koom said:

The DCCD diff and its housing is worth alot more if its not rooted by someone trying to RWD it

May as well sell it and go rwd and make money in the process.

yea id swap him my center diff + cash any day haha

i could weld up my poked center diff and it would work fine right?

[Koom]

Should do. Only thing that would throw a spanner in the works is if your centre housing has a 1.1:1 drop gear. Shouldn't though. Can count the teeth behind the centre diff to check.

[pl0x]

wouldn't matter what ratio anyway if its rwd would it?

was more thinking would it bolt up or would it need the rear gearbox housing to

[funkytown]

Nah it doesnt matter any.. just as long as you get the same R160 or 180 diff as your axles and hubs.

The lower the ratio the longer it will make the gears.. and run lower revs at any speed (than it used to).

[Koom]

 pl0x said:

wouldn't matter what ratio anyway if its rwd would it?

was more thinking would it bolt up or would it need the rear gearbox housing to

Ah yeah total blonde moment haha.

You need to swap the whole rear housing if removing/replacing DCCD as far as I know.

[rockr]

 Koom said:

You need to swap the whole rear housing if removing/replacing DCCD as far as I know.

correct

[sultan]

unless the engine is bog standard or you've converted to a hilux or skyline rear end you better have a steady supply of diffs

personally i wouldn't devalue my car, and i'd leave it 4wd. the drifting fad is pretty much over now any way

[GC8E2DD]

I seem to remember driftrex saying he had lunched a few gearboxes, but never any diffs.

[driftrex]

 GC8E2DD said:

I seem to remember driftrex saying he had lunched a few gearboxes, but never any diffs.

yep, 3 gearbox rebuilds so far, different parts each time though. i almost have a new gearbox now ;D

never blown a diff or driveshaft.

[sultan]

at how much power?

[driftrex]

was previously dynoed at 167kw at the rear, fairly standard. however far from standard now but yet to get car back together and running, not far away though, will b tuning for 200-220kw to start with.

[sultan]

yeah exactly. 167kw at the rear is like 300kw 4 wheel. 200kw is like 400kw 4wheel etc. time for the dedicated rwd setup.

[Jammasta]

 sultan said:

yeah exactly. 167kw at the rear is like 300kw 4 wheel. 200kw is like 400kw 4wheel etc. time for the dedicated rwd setup.

Please elaborate good sir.

[driftrex]

 sultan said:

yeah exactly. 167kw at the rear is like 300kw 4 wheel. 200kw is like 400kw 4wheel etc. time for the dedicated rwd setup.

i wont be staying RWD with the new power increase, just for a little while, i'll want more traction for track days. i also run no front diff in my gearbox.

[pl0x]

 sultan said:

unless the engine is bog standard or you've converted to a hilux or skyline rear end you better have a steady supply of diffs

personally i wouldn't devalue my car, and i'd leave it 4wd. the drifting fad is pretty much over now any way

neither would i but its a mates car so his choice.

plus its got a r180 which should handle it fine...

[sultan]

 TURTLE']

[quote name='sultan said:

yeah exactly. 167kw at the rear is like 300kw 4 wheel. 200kw is like 400kw 4wheel etc. time for the dedicated rwd setup.

/quote]

Please elaborate good sir.

well it won't quite be as linear as this, but the 4wd drivetrain system is designed for half the power to go to the front and half to the back. if you send all of the power to the back, you've effectively doubled the amount of power you would normally be sending to the rear in 4 wheel.

[pl0x]

 sultan']

[quote name='sultan said:

yeah exactly. 167kw at the rear is like 300kw 4 wheel. 200kw is like 400kw 4wheel etc. time for the dedicated rwd setup.

/quote]

Please elaborate good sir.

well it won't quite be as linear as this, but the 4wd drivetrain system is designed for half the power to go to the front and half to the back. if you send all of the power to the back, you've effectively doubled the amount of power you would normally be sending to the rear in 4 wheel.

wrong

[Optical]

 sultan']

[quote name='sultan said:

yeah exactly. 167kw at the rear is like 300kw 4 wheel. 200kw is like 400kw 4wheel etc. time for the dedicated rwd setup.

/quote]

Please elaborate good sir.

well it won't quite be as linear as this, but the 4wd drivetrain system is designed for half the power to go to the front and half to the back. if you send all of the power to the back, you've effectively doubled the amount of power you would normally be sending to the rear in 4 wheel.

something is fundamentally wrong with your understand of how differentials work

i suggest reading this http://en.wikipedia.org/wiki/Differential_%28mechanical_device%29

and then researching viscous coupling centre differentials that most subarus employ, then how the dccd system works.

[sultan]

obviously it's a different analogy for dccd as it's not 50/50 split. if power is going some where and then gets diverted else where, it doesn't magically get to the wheels without that same heat and friction and inevitably power. 200kw 50/50 going to two places is 100kw through the rear diff. 200kw going to one place is 200kw through the rear diff. 400kw going to two places is 200kw to the rear diff. it's not rocket science