DCCD Noises

[thorpy]

Hi

Just wondering if someone can tell me if this is normal.

Have accidentally knocked the thumbwheel for the dccd forward a coupe of times and found there to be alot of noises / clunking under the car.

Also tried it just 1 stage forward in the rain and found under hard acceleration it would spin the rears as normal but only briefly but then you can fell a shudder as the drive transfers , not really a noise but just a shudder like a heavy clutch engaging under load.

Does all this sound normal or is my paranoia correct and theres something wrong??

[GC8E2DD]

It is normal to hear a bit of driveline groan when doing tight low speed turns with a lot of diff lock. As for the shudder, you will probably get that launching it, but I don't think you should get that on the move. The centre diff contains an electromagnetic clutch, so that is what is engaging. If you aren't launching the car when it is shuddering, then perhaps it is just getting a bit worn.

[thorpy]

Nah not launching just hard acceleration in 1st gear can feel it change at about 20kph.

Is there any servicing that can be done with it?

[nzkaosnz]

give it to me my standard centre diff is nice n quiet

[GC8E2DD]

Haha, nzkaos has an easy fix. I don't think I've ever had shudders or crunches on the move in a straight line. Probably just getting a bit tired. I'm sure Subaru can rebuild them if you are worried about it.

[thorpy]

 GC8E2DD said:

Haha, nzkaos has an easy fix. I don't think I've ever had shudders or crunches on the move in a straight line. Probably just getting a bit tired. I'm sure Subaru can rebuild them if you are worried about it.

I dont think I wana know the price to do that , will stick with wheel spin as it runs fine normally.

[nt_a_foz]

if you only got it one notch forward id imagine it still would wheel spin..

Itd only be putting a tiny bit forward more than open..

And a bit of noise when turning etc is normal

[nzkaosnz]

there was a DCCD guide on here somewhere about using it.

Pretty much -

Dry tarseal/daily use - Open

Dry- agressive use - 1-2 clicks foward

Wet - 1-2 clicks foward

Wet agressive - 3-4 clicks foward

Thrashing car/Gravel/Snow etc etc - all way foward and hang on.

This is only a guide, and wont be bad if you use outside of this. Just make sure its open for the long distance cruises, and dont wrap it around a tree when running around in full open.

If your really worried, you can get DCCD controllers that can set it automatically.

If tyres are not exactly same brand/pressure/worn-ness - the diff can bang and thump, even in a straight line, and makes steering heavy.

Turning corners on dry tar with think in lock makes one helluva noise.

You know its bad when even the subaru manual mentions that making noises is normal.

Also - could those who dont have DCCD, have never had DCCD, and possibly never been in a DCCD car, please refrain from spouting sheit about stuff they dont know about/unrelated crap?

[nt_a_foz]

Thread tidyed up for you issac....

[thorpy]

Thanks for the replies , i think I will just leave it as is as I doubt I will be using the DCCD too much to justify any repairs.

[scooby-wrx]

This link may help, its from a Type RA owners club.

http://www.type-ra.co.uk/vB/showthread.php?t=3814

[Guest]

my diffs make one hell of a racket, even in a straight line, reverse turning, forward turning slow monuvering, i think its more from the rear diff but im not sure, after 4 years it still makes me wonder if it's fcuked or not but it's still going strong.

Just one question i have is when the diff is set to FREE on grasskanas events it soley sends ALL power to the rear, if a apply a little brake it'll sit there all day like a rear wheel drive, would it be damaging any thing apart from the dirt thats getting torn up lol?

Sorry for the hijack.

[Guest]

hey this may sound dumb

but what is dccd

[Guest]

oh kool thanks for clearing that up for me

[Guest boostin]

Here's the dash display...

And the control wheel by the handbrake...

[GC8E2DD]

Hah sharktale, I'm not surprised your diffs make noise. I'm fairly sure a DCCD diff is never fully open. Have a look at the chart that comes up at 0:29 in this vid

. Holding the brakes on and doing burnouts must be wearing the centre diff and wearing your rear brake pads to some degree.

[Guest boostin]

Thats some mean drifting at the end!! ;D

[Guest]

I'v done that brake thing may be twice, and sound of the diffs have been there since 31k when i broght it and it's now done 97 odd k the sounds hav'nt gotten any worse but they hav'nt gotten ant quiter either lol, i'v add friction modifier to the rear but it's still the same, im not worried about it, but every time the miss takes it out she always comments on it being noisey at times. pifff lol

[Guest]

Im not sure it is doing damage because it does exactly as it's intended like this, and theres a few others out there.

sorry im just arguing against myself here, lol.

[GC8E2DD]

Can't have fun without wear and tear =P

[nzkaosnz]

(unsubscribes)

[thorpy]

well did a road trip to invercargill and ended up on some gravel roads so had a play with the DCCD , end result - works very well and no more noises , must have just needed some use. ;D

[dubbedup]

 boostin said:

Here's the dash display...

<<snip>>

And the control wheel by the handbrake...

What is the switch for? besdie the dccd controller?

[Koom]

 dubbedup said:

What is the switch for? besdie the dccd controller?

Switching between Manual and Auto DCCD modes on the newer cars?

[GC8E2DD]

Hey Koom, were you saying that you had installed (or knew of someone that had) a DCCDPro controller? If yes, what were their impressions of it? Have you driven with it?