Dual mass flywheel on a Patrol

Submitted: Wednesday, Feb 27, 2008 at 16:35
ThreadID: 54983 Views:8682 Replies:8 FollowUps:13
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I have a 98 GU Patrol and looks like I need a new clutch ! I fitted a new slave as I said I would in a previous thread to no avail the promlem is still there.I have been told because it has a duel mass flywheel the cost is $2200 .can anyone tell me what that type of flywheel does and how ?

Cheers
Giffo
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Reply By: Dunaruna - Wednesday, Feb 27, 2008 at 17:12

Wednesday, Feb 27, 2008 at 17:12
Nissan will tell you that you must use the dual mass setup, they are full of bleep e. Every second GU owner complains of clutch problems, nissan should do a recall but it would be way to expensive so their answer to the problem is to reduce the dual mass from $2500 (parts only) to $1600. IMO, it's a ripoff at $1!

Go for the exedy safari clutch replacement, it comes with a single mass flywheel. It is a common conversion and the hardcore 4x4ers swear by them.You may get a bit more engine/gearbox noise into the cabin but that's about it!

Expect to pay no more than $2400 fitted.
AnswerID: 289663

Follow Up By: Dunaruna - Wednesday, Feb 27, 2008 at 17:24

Wednesday, Feb 27, 2008 at 17:24
Forgot to add:

A dual mass flywheel has a gel/liquid inbetween the two pieces of flywheel to help absorb the harmonics that cause noisy geartrains. Noise in the driveline is not nessesarliy a problem, in fact it's normal in most cases but nissan are trying to reduce incabin noise. There is also data which shows the dual mass can handle greater torque but the jury is still out on that especially seeing as they are failing so much.

The exedy safari is an excellent heavy duty replacement.
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Follow Up By: Member - carl R (QLD) - Wednesday, Feb 27, 2008 at 17:33

Wednesday, Feb 27, 2008 at 17:33
I had my clutch and flywheel replaced in my 2000 patrol about 4 month ago. Got a clutch and a solid flywheel and found no extra noise the total for the job $2000 Sunnybank Signature Service Brisbane
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Follow Up By: Member - Davidp P (VIC) - Wednesday, Feb 27, 2008 at 17:33

Wednesday, Feb 27, 2008 at 17:33
Looks like there is not further reason to have a manual gbox, an auto has the ultimate creepability because of its torque converter and in the case of my jeep a LOWER av fuel consumption than the man. version! I have had dozens of man. vehicles but I wouldnt have a man. 4WD particularly a Nissan
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Reply By: zigglemeister - Wednesday, Feb 27, 2008 at 17:32

Wednesday, Feb 27, 2008 at 17:32
I've never quite understood why nowadays everyone seems to insist that flywheels _must_ be machined or replaced? It used to be that hardly anyone ever did, unless they'd worn the clutch down to metal and scored the flywheel. I've replaced clutches in several of my vehicles (though never my GU, admittedly) - never replaced a flywheel, never had a problem. If it's operating smoothly, with no juddering, why would there be a problem to reuse the existing flywheel with a new clutch and pressure plate? Anyone?

Tim Z
98 GU Petrol/LPG
AnswerID: 289668

Follow Up By: Dunaruna - Wednesday, Feb 27, 2008 at 17:37

Wednesday, Feb 27, 2008 at 17:37
That;s modern automotive technology for you. It's a throw away world now.

Don't know about the GU, but the GQ flywheel could only take one or two grinds before the throw of the pressure plate became useless.
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FollowupID: 554987

Follow Up By: zigglemeister - Wednesday, Feb 27, 2008 at 17:47

Wednesday, Feb 27, 2008 at 17:47
Yep, okay, but I never even used to bother grinding, and never had any problems. I'm no expert at all, just thinking out loud here - but it seems to me that the only likely problems are scoring or hot spots that are bad enough to cause juddering. If there's no scoring, and no juddering before the change, what's the likelihood that there'd be problems afterwards?

Tim Z
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Follow Up By: Dunaruna - Wednesday, Feb 27, 2008 at 17:54

Wednesday, Feb 27, 2008 at 17:54
Good question. From a mechanics point of view, removing and refitting a 4x4 gearbox is no easy task (a GQ 5 speed would take one guy about 10 hours) so we gotta make sure we do it right the first time. Nothing worse than discovering a problem AFTER it's all back together. Often, I will replace the rear main seal also just for good measure (whether it's leaking or not).

Hot spots on the flywheel cause all sorts of problems. The only way to remove hotspots is to grind, machining won't do it. A bad hotspot will also have micro cracks, in that case the flywheel is toast.
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FollowupID: 554996

Follow Up By: Member - Phil G (SA) - Wednesday, Feb 27, 2008 at 18:43

Wednesday, Feb 27, 2008 at 18:43
Tim,
As well as what Dunaruna has said, the materials have changed. Asbestos was removed from clutch plates maybe 15+ years ago. The old material was great. The newer materials are much more prone to shudder. Shudder was a lot more common if the flywheel and pressure plates are not machined.
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Reply By: giffo - Wednesday, Feb 27, 2008 at 17:42

Wednesday, Feb 27, 2008 at 17:42
Thanks for the advice,were would my mechanic (not Nissan) find a cluth as you mentioned,I suppose not all parts suppliers carry them ?
The Patrol sadly ,will be a driveway ornament for a while ! There is a opportunity for the Toyota fan club to run with !

Cheers
Giffo
AnswerID: 289672

Follow Up By: Dunaruna - Wednesday, Feb 27, 2008 at 17:48

Wednesday, Feb 27, 2008 at 17:48
'Exedy' is a very popular aftermarket brand of clutch kits. "Safari' is one of their heavy duty versions. Being that this is a caravanning site, I assume you tow something biggish - no?

Might I suggest google. If you're in Melbourne, I can point you in the right direction, where are you?
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Follow Up By: giffo - Wednesday, Feb 27, 2008 at 18:14

Wednesday, Feb 27, 2008 at 18:14
Yes I tow a Boat and a Caravan, but not at the same time HaHa. and also intend to use the 4x4 part also.I am located on the Gold Coast.Thanks for the info ,Its good to get help from people that have been down the road before.Also I have just coughed up the cash to be a Member in the last 5 minutes,I thinks its worth it !

Cheers
Giffo
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FollowupID: 555002

Follow Up By: 96 GXL 80 series - Wednesday, Feb 27, 2008 at 19:24

Wednesday, Feb 27, 2008 at 19:24
Try All-Trans at Currumbin, they give an Australia wide warranty as well.
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FollowupID: 555018

Reply By: Member - Phil G (SA) - Wednesday, Feb 27, 2008 at 18:38

Wednesday, Feb 27, 2008 at 18:38
Are you sure you have a dual mass flywheel?
I thought they only came in in 2000 with the 3litre Patrol?
AnswerID: 289679

Follow Up By: stefan P (Penrith NSW) - Wednesday, Feb 27, 2008 at 19:20

Wednesday, Feb 27, 2008 at 19:20
Yep 2.8 has the dual mass.....Mine had it done at 98000kms
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FollowupID: 555017

Follow Up By: Member - Phil G (SA) - Wednesday, Feb 27, 2008 at 20:41

Wednesday, Feb 27, 2008 at 20:41
Thanks Stefan,
Learn something new ........
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Reply By: giffo - Wednesday, Feb 27, 2008 at 18:46

Wednesday, Feb 27, 2008 at 18:46
I rang Nissan in Melbourne and gave them the VIN No and they said that it did .I hope they are wrong !
Cheers
Giffo
AnswerID: 289680

Follow Up By: Member - Phil G (SA) - Wednesday, Feb 27, 2008 at 18:48

Wednesday, Feb 27, 2008 at 18:48
Ok thanks Giffo. Is yours a 2.8??
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FollowupID: 555009

Reply By: giffo - Wednesday, Feb 27, 2008 at 19:44

Wednesday, Feb 27, 2008 at 19:44
Yep ,I got the 2.8

Giffo
AnswerID: 289693

Reply By: desert - Thursday, Feb 28, 2008 at 09:13

Thursday, Feb 28, 2008 at 09:13
What size engine are you talking about? As a '98 model, it would have to be either 4.2 diesel which does not have the dual mass flywheel, unsure of the 2.8 litre or the 4.5 Petrol, though??
AnswerID: 289773

Reply By: Gronk - Thursday, Feb 28, 2008 at 10:19

Thursday, Feb 28, 2008 at 10:19
Had a T/D Jack ( 98 model ) and the clutch started slipping at 80,000..

Removed clutch ( which looked brand new, but later found to be pressure plate fingers had lost tension )

Dual mass flywheel also looked brand new, so didn't touch it !!

I think too many people are getting ripped off when cars are being taken to dealers etc and they want to throw all new parts at them when sometimes they aren't needed..

Same as brake discs.......if they look good and haven't been shuddering.....just throw new pads in..
AnswerID: 289781

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