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#2
10-17-2005, 12:10 AM
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lets see
my sdl turning 3000 is 73 i think. that is a 288 gear, so in round numbers a 369 gear is about 20% difference so that would be about 3600 rpm for a stock geared 240. i always have limited my 240s to 72 mph on the highway. they seemed pretty happy there.
tom w
__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.  [SIGPIC]..I also have a 427 Cobra replica with an aluminum chassis. 
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#3
10-17-2005, 12:30 AM
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wow 3,600 rpm, they're roaring in the 70-mph range! I never even realized that....wshew.
__________________
-diesel is not just a fuel, its a way of life-  '15 GLK250 Bluetec 118k - mine - (OC-123,800) '17 Metris(VITO!) - 37k - wifes (OC-41k) '09 Sprinter 3500 Winnebago View - 62k (OC - 67k) '13 ML350 Bluetec - 95k - dad's (OC-98k) '01 SL500 - 103k(km) - dad's (OC-110,000km) '16 E400 4matic Sedan - 148k - Brothers (OC-155k)
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#4
10-17-2005, 08:10 AM
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Some seem happier at 70 than others it has been pointed out from time to time. You know the engine is turning up but depending on condition of a lot of items including the noise abatement blanket under the hood the effect on the driver varies. I know this does not provide a specific answer but have driven different 240s at 70. Some do not feel like the want to be there where others seem to cruise along reasonably well. Again allowing for the fact the engine is turning up pretty good.
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#5
10-17-2005, 08:32 AM
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The engine speed at 70 mph with 185-75-14's and a 3.69 ratio is 3485 rpm. This would be with manual transmission. The automatic will turn about 200 rpm higher on level ground, and can be 300-400 rpm higher when asking for maximum power.
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#6
10-17-2005, 08:38 AM
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What about a 1982 300D?
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#7
10-17-2005, 08:55 AM
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Quote:
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#8
10-17-2005, 10:10 AM
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yeah
brian used the correct tire size. i didnt allow for the oversize 185 tires.
tom w
__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual. [SIGPIC]..I also have a 427 Cobra replica with an aluminum chassis.
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#9
10-17-2005, 10:14 AM
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again in round #s
300d non turbo right? has 346 gears which are about 7% different than the 240 so if running stock tires, 7% off 3600 is about 230 rpm or 3370.
tom w
__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual. [SIGPIC]..I also have a 427 Cobra replica with an aluminum chassis.
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#10
10-17-2005, 11:41 AM
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#11
10-17-2005, 11:57 AM
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My 240 (auto) will do 70 with no problem, but man the noise is just about unbearable. Seems a lot quieter at 65. It is a very spunky 240 though, not doggy like most people here say they are.
My hood insulation is sagging in a few spots, maybe a new one would quiet things a bit?
__________________
'85 300D - 206K (sold)  '81 240D - 149K (sold) '03 Jetta TDI - (sold) '79 300D - (sold)
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#12
10-17-2005, 12:02 PM
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The sweet spot on my 1980 manual is about 76 mph.... if I don't look at the speedo for a while..that is where it winds up ... ( PUN )...
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#13
10-17-2005, 02:08 PM
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#14
10-17-2005, 02:09 PM
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#15
10-17-2005, 03:24 PM
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