solid flywheel

[darbuck]

hi lads ,just something i've being toying with for the past year really i have a solid flywheel off a peugeot 307 90bhp im wondering if i could use this in a 2003 c5 or are the gear boxes setup completely different. its out of a 2003

[darbuck]

has nobody got an opinion on this lads

[Stickyfinger]

I would think nobody knows that....dare you...Be the FIRST

[Peter.N.]

If you do it let us know what happens, I'm sure there are plenty of people that would like to know.

Peter

[darbuck]

I have compared it to the old dual mass off the old engine its the same size all bolt holes are in the same places THE THICKNESS IS DIFFERENT THOUGH but im not sure how much of a difference this would make, its more so time to do it as its a big job and if anything goes pear shaped expensive, does any one know if its a pull type clutch or traditional on the 307 also does anyone know what gearboxes are available on the 307.

[Peter.N.]

How does the weight compare?

[darbuck]

the original dmf is 12.8kg and the smf is 9.5 kg which is 3.3 kg difference after checking this im not so sure it will work any views

[Peter.N.]

I would think it will increase the low speed vibration, the Hdi already has more that the 2.1td which is very smooth and I think that is down to a heavier flywheel. Are they both weights including the clutch or the bare flywheel?

Peter

[Oldpug]

Discussions on DMF to solid have been done to death on many forums,mainly due to so many solid conversion kits on the market.
My view,along with most professionals is,if a car has a DMF keep it.Its on there for a reason,the engine and transmission have been designed around a DMF for absorbing vibrations and balance. Think about it,a DMF is a spring/damper,it "gives". A solid flywheel wont give so something else may have to give?
I know DMF`s are unreliable and very expensive to replace,I hate them. I`m old school,to me a flywheel was a lump of metal that stayed on an engine for ever.

[darbuck]

thats bare flywheel weight im going to convert either way im just trying to reduce cost as this engine type has been used as a solid on the xantia so its not an issue that would concern me. i just want to make sure its the right type of flywheel.

[BX]

As far as I know. In most models including 307 406 and mk1 c5.
90bhp = solid flywheel + be gearbox.
110bhp = dual mass flywheel + ml gearbox.

Early 2.0 hdi engines were only available in 110bhp and used solid flywheels. This changed about 1999 or 2000.
I think that your solid flywheel is probably thinner than the DMF you want to replace. I think the diameter of the ring gear is the same.

Edit: just read where you said it is thinner.

[darbuck]

The ring gear back to back lines up perfectly between the dmf and smf the fact that they used the same gearboxes would lead me to believe that the original pull type clutch might work, does any one agree.The 307 110hp conversion kits use an identical flywheel.I just dont want to start and realise its not going to work as i cant really afford the full kit at the moment.

[feef]

A lighter flywheel will also make pulling away slightly trickier as the rotating mass of the engine has less stored energy, and it can also make it hard to maintain a smooth idle.

Bear in mind that it's not just the overall weight of the flywheel, but where the weight is positioned as that will affect the angular momentum. e.g. a light ring with a large diameter can have the same angular momentum as a heavier but smaller disk

[darbuck]

well lads time to put this to bed i offered up fly wheel against engine today the locating pin doesn't fit so wont work back to the
drawing board.

[fynnbar]

You can buy conversion kits from any good motor factors.
Advice is that it's a good mod on a 2.0, not so on a 2.2 (which has only ever used a DMF, and can suffer crankshaft failure with a SMF).
The early DW10 2.0HDi fitted to the Dispatch/Expert/Scudo was 95bhp (RHX), and used SMF, proving that this engine is fine with either type of clutch/flywheel.
I'm converting my 2004 110 Expert van to SMF next week in fact, coupled with a 2.0 C5 gearbox