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700/900 Series General Forum for the Volvo 740, 760, 780, 940, 960 & S/V90 cars |
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960 2.5 m90Views : 1311 Replies : 23Users Viewing This Thread : |
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Sep 5th, 2018, 19:14 | #11 |
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Sep 5th, 2018, 19:23 | #12 |
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Sep 10th, 2018, 16:42 | #13 |
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Unfortunately, or thankfully I discovered some pretty serious rust on the sill of my 3.0 auto, made no sense to repair as I had a perfectly good shell in the 2.5 manual sitting, so 3.0 being fitted to manual car this week with a lightened flywheel and 850r clutch.
I've had the 3.0 auto for 6 years and never thought I'd part with it but it's led a tough life and the other car is solid, had the top end done on the 3.0 2 years ago so I know it's in good condition unlike the 2.5 motor. |
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Sep 10th, 2018, 16:52 | #14 |
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Well if nothing else the rust helped you decide!
Should be quite lively as well, i think Volvo have a habit of altering axle ratios so none of the cars are that much livelier than their larger engined counterparts so the axle ratio might well be lower but be very lively with the 3.0 under the bonnet!
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Cheers Dave Next Door to Top-Gun with a Honda CR-V & S Type Jag Volvo gone but not forgotten........ |
Sep 10th, 2018, 19:24 | #15 |
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I checked if the 2.5 car had a lsd but unfortunately not, forgot to check the ratio though, I don't do a lot of, motorway miles these days so a higher ratio diff would be preferable for acceleration, right?
Plan to pull off the 3.0 axle regardless as I want the softer nivo leaf to go with my coil overs so I can lower it. |
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Sep 10th, 2018, 19:47 | #16 | |
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Just for the sake of clarity, it's worth remembering the differential is a reduction gearbox so the higher the number, the greater the reduction and the lower the ratio. For example, to get 1000 wheel rpm with a 4.1:1 diff, the propshaft will have to turn 4100 times a minute. To get the same 1000 wheel rpm with a 3.31 diff, the propshaft only needs to turn 3310 times a minute.
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Cheers Dave Next Door to Top-Gun with a Honda CR-V & S Type Jag Volvo gone but not forgotten........ |
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Sep 12th, 2018, 18:43 | #17 | |
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The lower axle ratio on the 2.5 I guess this was a vain attempt to compensate for the smaller engine's lack of torque. I've owned all four combinations - 2.5 and 3.0, manual and auto. With the 2.5's I was always conscious of it being a smaller engine having to work a lot harder. The 3.0 is the engine this car should have - the extra 0.5 litre really does make a noticeable difference in driveability. |
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Sep 12th, 2018, 18:45 | #18 |
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I currently own a 2.5 and it’s vastly different to the 3.0 - even in the “de-tuned” 180bhp spec in a 1997 s90 that I previously owned.
Over 3k rpm @ 70 is not good for MPG 🤣 Only way forward is to +T the 2.5 😏 Cheers
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1997 965 2.5 SE Manual 1996 944 Classic 2.3 LPT - SOLD/BROKEN/SCRAPPED 1997 S90 3.0 - SOLD to doingitsideways 2021 Škoda Octavia Estate L iV PHEV (Company) |
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Sep 13th, 2018, 10:05 | #19 | |
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Sep 13th, 2018, 10:26 | #20 |
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Should definitely be a lively wee beastie once it's done then!
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Cheers Dave Next Door to Top-Gun with a Honda CR-V & S Type Jag Volvo gone but not forgotten........ |
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