• Wanted

  • M46 and associated parts req. for 240 manual conversion

I have most stuff needed, your 2.4 flywheel try classicswede in the UK

Thanks for the offers everyone. I'm thinking now it may be more sensible to keep the GT together for now.

On doing a bit of reading, I've seen that there are different spline sizes on the input shaft. Does anyone know which would be most suitable for a 92 b230fx? Looks like the fine spline? If the box doesn't have the fine spline would it be a case of changing the input shaft to make it work?

'79 and newer boxes are all fine spline, and prior to '79 we only got the M45 four speed in Australia, so whatever box you get will be fine spline.

In other terms fine spline = 22 tooth

coarse spline = 10 tooth

Should have news on dished flywheels converted to LH 2.4 next week (though it has been many months so far). First round of R&D failed for the dished ones, fingers crossed on round two. The flat ones are a go, having two done this week, one of which is spoken for. There is also another flat one available that should work with a normal clutch.

Pic of flat flywheel on an old engine for measuring for those interested. All done by a very high quality machine shop. Need to arrange balancing for them too. Any leads on a good flywheel balancer in Melbourne?

How much is one of these flat ones?

Need to sort out balancing first.

This place was the first to pop up on google and they seem to like flywheels

http://www.dugganbalancing.com.au/flywheel-balancing-machining-melbourne/

Anyone had any experience with them?

Been wondering if utilising an m47 with a flat flywheel would require some custom sort of clutch arrangement?

Did stumble upon this thread

user48736353002 My clutch (which has been happy for years) is starting to slip as the engine mods are adding up. Can anyone help me narrow down the best value flywheel/clutch combo for a M47 that doesn't need the crank angle sensor holes? Not running LH2.4. The car is a 1988 240 - If I'm installing a new clutch I wouldn't mind installing a lighter flywheel if there is the option. I did read that the flat flywheel should fit an M47. For a bit of fun, here's a video of it slipping after tuning for E85 fuel tonight. <iframe width="560" height="315" src="https://www.youtube.com/embed/uzwo4_4UigE" frameborder="0" allowfullscreen></iframe> Thanks.

@Vee_Que mentions a combination of falcon pressure plate and a Toyota spline disc. Is this simply for higher power applications?

Did notice there was a sachs clutch kit for m45/m46/m47. So does that mean all clutches are the same? The following reference seems to indicate the early flat flywheel cars have an 8.5" pressure plate/flywheel and later cars have 9". But then they are discussing fitment of a 9.5" setup. In which case, does the m47 typically have the 9" setup? And can it be adapted to work directly with a flat flywheel? Or would it be a case of utilising a combination of early type pressure plate and later type diaphragm? Or am I just overthinking this?

http://people.physics.anu.edu.au/~amh110/Clutch/clutch_upgrade.htm

    Oh and the above link mentions balancing flywheel complete with pressure plate. Is that the typical way to balance for most accurate results?

    "In direct answer to your question. I used to have an 86 244DL. It had a bad M46. It's the last year for the M46 in a 240 as well as being the last year for the flat flywheel. I used an M47 in it with the flat flywheel without issue. Used a stock 8.5" pressure plate and disc but you use the proper throwout bearing for an M47. It all worked like it was made for it. Plus no speedo issues since it was the first year for the electronic speedo. Didn't need a tone ring of course since the car was LH2.2."

    From https://forums.tbforums.com/showthread.php?t=161005

    So looks like it's maybe not so complicated.

    Also wondering if a regular m47 clutch fork would need any modification to work with a flat flywheel setup?

    © 2013-2025 Oz Volvo. All rights reserved. | Forum Rules | Privacy Policy