p38 duelmass flywheel

alfaitalia said:

We just replaced a dmf with solid on our works Nissan Navara, having got through three in 60000 mile (due to lots of caravan towing as i work for Chichester Caravans). If any thing I would say the truck is much smoother to drive than it was with the dmf (and hopefully will last a bit longer!)

Up until a few years ago we all managed quite happily (reguardless of what we drove) without dmf,s. Not the best idea and generally seem under engineered for the job, especially on heavy or torquy cars.

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You ain't wrong there matey, ive never had to replace a DMF on a petrol modeo yet they ain't got the torque to desroy them

oldskool said:

Can't see how TBH cos as long as there load on it it will be on its stops, much the same as a normal clutch centre plate works springs compressed under load.

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Well that's what LUK say, but what do they know, they only invented them. Under high load yes, but not when engine is running light in gear as it would in slow traffic and a high gear, the springs damp the torque as the cylinders fire. That is what the DMF is supposed to do. Allegedly.

wammers said:

Well that's what LUK say, but what do they know, they only invented them. Under high load yes, but not when engine is running light in gear as it would in slow traffic and a high gear, the springs damp the torque as the cylinders fire. That is what the DMF is supposed to do. Allegedly.

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Yes sorry it would be working at very light loads like you say just like the old stile sprung centre/drive plates do/did. LUK didn't invent them they were comistioned by companies like FMC/BMW/MERC ect to develope them to try and remove some of the transient mass from the fly wheel and reduce gear lever vibration, and if you think these are expensive wait till the stop/start systems start going wrong FFS starter and alternator built into the DMF they ain't gonna be cheap. I think i'll be keeping me disco1 and B reg xr4i they can both be fixed with out taking a second morgage out

oldskool said:

Yes sorry it would be working at very light loads like you say just like the old stile sprung centre/drive plates do/did. LUK didn't invent them they were comistioned by companies like FMC/BMW/MERC ect to develope them to try and remove some of the transient mass from the fly wheel and reduce gear lever vibration, and if you think these are expensive wait till the stop/start systems start going wrong FFS starter and alternator built into the DMF they ain't gonna be cheap. I think i'll be keeping me disco1 and B reg xr4i they can both be fixed with out taking a second morgage out

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Well ok invent maybe a bit wrong but if they were asked to develop a method to reduce gearlever rattle. And that's what they came up with, maybe invent could be used loosely. Many of the new fangled things are just eggheads playing with our money. Yes will be keeping my Rangie for a very long time i think. Think it will easily outlast me.

As with most things these people are given something to develope they do a spledid job that works then the manufacture say's fook orf thats to expensive make it cheaper so of they go and thats when it goes tits up

oldskool said:

As with most things these people are given something to develope they do a spledid job that works then the manufacture say's fook orf thats to expensive make it cheaper so of they go and thats when it goes tits up

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True. Cheap women are the only things that have the same functionality as a more expensive fully developed version.

wammers said:

True. Cheap women are the only things that have the same functionality as a more expensive fully developed version.

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But may come with unwanted accesories like a dose of clap:mooning:

Datatek said:

But may come with unwanted accesories like a dose of clap:mooning:

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Yes there are drawbacks. But the penicillin is fairly cheap. Nowhere near as expensive as bothering with her posh mate. Who may also come with the same problem.

So do we know where we can get one that dont cost the earth???.. im in the same boat.. i need one but the price frightens me away... will it hurt the car not replacing it????.. its doing my fillings in my teeth no good on tick over !!!!

stuxj40 said:

So do we know where we can get one that dont cost the earth???.. im in the same boat.. i need one but the price frightens me away... will it hurt the car not replacing it????.. its doing my fillings in my teeth no good on tick over !!!!

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Send me a PM.......will see what I can do...

best price found upto now 380 plus the dreaded buy parts by;

I have two solid steel billet flywheels for sale. 11kgs each. Use LR pressure plate with heavy duty Ford driven plate. We used a Cosworth one.
The only thing I did not do is get them balanced. Been running in mine for the last 12-18months no problem.
Can send pics if required. £350 each which is not bad considering the amount of machining in them.

Forgot to add you will need to use your old ring gear or purchase a new one. Mine came off the old dual mass easy enough.
Sid

starfish said:

best price found upto now 380 plus the dreaded buy parts by;

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whats this mean ? and where from

im just trying to establish if i need a new DMF or not or if it should be replaced when replacing the clutch ? (2.5 dse)

clutch+dmf+labour= **** take expense

its normal practice you change clutch and flywheel at the same time ,fly wheel acts as damper for clutch ,shop aout at prices for clutch and flywheels

polsta said:

whats this mean ? and where from

im just trying to establish if i need a new DMF or not or if it should be replaced when replacing the clutch ? (2.5 dse)

clutch+dmf+labour= **** take expense

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Always replace the DMF if replacing the clutch, if it breaks up it's very destructive.
I put a solid flywheel in my Transit a few months ago, all good so far, a little more vibration at very low revs under load, a down shift soon stops that! Otherwise all OK. They are reputed to break cranks but as the bloody thing is rusting away before my eyes it was worth a gamble. A secondhand engine is not a lot more expensive than a DMF if the worst happens

any idea where the best price can be found for both ?

im now thinking about just selling the thing and being done with it and buying a defender or something , spent a fair bit and time sorting little things and getting it all nice and uptogether, lots of time sealing the chassis and stuff, now this

..and being winter, ive still not even touched the air con,hevac, which need some attention, and possibly condeners/blend motors etc

I ripped the centre out of my old clutch towing a skip lorry with 8 ton on the back. Did not go that evening was a day or so later when the middle disintegrated. The flywheel had been playing up before then with it starting to run lumpy on tickover.
I priced up a new DMF at 450 and the clutch assembly at 172. I priced up getting one made and it was cheaper if I had three. He had not made RR ones before but lots of Fords and GM's. We changed it ourselves which is not too difficult as long as you have the correct lifting gear. It is easier on a ramp than the way we did it on the floor.
I reckon to allow about 400-450 for someone to change.
There is some vibration in through the lower gears but more of a harsh feel rather than vibration. Not there when cruising.
It does not matter what you have in the modern era it appears just about every vehicle has one fitted. Nice money spinner for LUK