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Comments
The od stopping working is clutches heating up and failing, the solenoid usually just will not work. Though it could be the relay but that's a long shot.
That makes sense. The old guy said he cooked the clutch because he turned up the boost or something.
How much for a box?
My mate has an m47 for a 240. Is that a good option and where can I get an extension to suit a 740?
Should not be difficult to extend the shifter bracket of a 240 one.
Haha! I couldn’t part with her just yet.
Just got her up to 140km/h (legally on a road that has a 140km/h speed limit) in 4th gear. The thing hammers. Went to engage o/d but it didn’t engage or maybe I was already going to fast. Didn’t notice much difference. Gearbox is still very usable just hates shifting down to 2nd when going over 40km/h.
I don't know much about the inner workings of the overdrive but from what little I understand high torque / boost shouldn't be applied with the overdrive engaged.
What happens when you double de-clutch? Does it go into 2nd then?
Sheer age and incorrect oil would kill the od clutches.
Just tried that and yes a litttle better!
Yeah I have thought about m90 in the past but what VQ said if I get a dud box I’m back to square one minus 1500 dollars. I might just use an m47 in this one. I’m not looking for really big power. And yeah I’ve heard that the m46 o/d is not a power gear. I can go more than fast enough in 4th anyway haha
Straight forward swap no fekin about.
And being a volvo box no need for engineering approval.
I'm sure the T5 is good for many swaps (and easier to rebuild) but being a rare vehicle I'd keep it all Volvo / M90 if it were mine. I believe the M47 was never used on turbo cars?
Unlikely one of the M90s mported off a parts car was the reason it was taken off the road - however having purchased a couple of these there's no history on mileage so you could get a nice tight one or a very tired unit off a high mileage car, lucky dip. Still worth the chance IMO.
That would suggest that your synchos are worn. Unfortunately M45/M46 synchos are NLA from Volvo, last time I checked anyway.
All is not lost, since Planetman from Turbobricks (Eric at High Performance Auto in Torrence CA) has a supply of them.
For sure. If I go ahead with it I won’t be scrapping anything
Is he sure he cooked the clutch and not the cone clutch in the box? I did a pull in the 245 at 20psi and it ate the cone clutch. Even with a new turbo clutch it still slips in every gear.