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HI All,
Just bought a 93 940 N/A Wagon for $500, it had a blown head gasket and a few dents in addition to being very neglected and filthy. I got the engine
running and I will deal with the other cosmetic issues as time permits.
My question is about the engine RPM's. I know that the OD is working and when drive 70 mph on the Freeway, the engine is at 3K rpm. When I drive my 87'745T the rpm's are only at 2,700 at 70mph(and not in boost). I was hoping that I would see a significant savings in gas with the N/A but if the engine rpm's are about 10% higher on average I am thinking it will not be much different?
Does that rpm agree with you other N/A 940 owners?
Thanks,
JJ
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posted by
someone claiming to be tjts1
on
Sun Mar 18 05:46 CST 2007 [ RELATED]
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If you want better fuel economy at the expense of some acceleration, swap in a rear axle from a 940 turbo of the same vintage for a good compromise. These have a 3.73 differential ratio vs your 4.10. Its a relatively big item to swap in but only held in with a few large bolts. If you really don't care about acceleration I suppose you could even go for a 3.31 axle from 92-94 960 wagon for super low rpm highway cruising rpm. You will have to hold the trans if first gear manually to climb steep hills. For reference, the 960 can run all the way up to 50mph at 6000rpm in 1st gear, 2000rpm at 60mph in 4th and 90mph at 3000rpm in 4th. Very very tall gears. On the flip side the 960 will do a comfortable 26-28mpg on the highway and thats a 3500lb car with a 200hp engine. Your 4cyl B230f is set up for low rpm torque which is idea for tall gears. The 4.10 axle was fitted to US bound car to appease American driver's appetite for quick off the line acceleration.
Good luck
Justin
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posted by
someone claiming to be miracleman49
on
Fri Mar 16 18:19 CST 2007 [ RELATED]
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I have two non-turbo 1995 940s, California emission specs. Engine turns a hair under 3000 at 70MPH. And at steady 70MPH, I get 25 to 26 MPG (US). With AC running (live in Florida), mileage at 70 MPH drops to 22-23 MPG. Don't know about
The engine is in very good condition, clean and/or replace plugs every 20k miles, clean air filter, properly operating airbox thermostat, uses Full Synthetic 10w30, and tires are at 34psi.
Hope this helps
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I have a non-turbo 94. With the 4.10 axle that was common to non-turbo's in the later 940's and the lockup AW-71L transmission, the engine turns a hair under 3000 at 70MPH. And at that steady 70MPH, I get 29+ MPG (US).
The engine is in very good condition, has 20k mi on the NGK plugs, clean air filter, properly operating airbox thermostat, uses Mobil-1 5W30, and the tires are at 32psi.
--
Bob (son's 81-244GL B21F/M46, dtr's 83-244DL B23F/M46, my 94-944 B230FD and 89 745 (LT-1 V8); hobbycar 77 MGB, and a few old motorcycles)
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hello
you should get around 28-29 mpg highway with the 93 940, the rear end ratio is 4.10 i believe. it probably has the lock up converter.
our 94 940 = i dont remember the rpms as its my daughters car and i rarely drive it.
my 95 940 turbo gets 23-24 mpg highway, rear end is 3.73 i believe and 3,000 rpms get me 74-75 mph.
good luck
mike
--
85 244 turbo 225,000. 95 944 turbo 120,000
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is this an AW71 tranny? I know you said NA, but for your info at 3K my turbo goes approx. 74mph which I normally cruise at. About 2800rpm for 70mph. The analog gauges could be plus or minus 50rpm.
So I would say you are pretty close, but I don't know if the differential ratio is different in these two models, maybe somebody else will chime in.
--
EJO now a 1993 944T 193K; ex '65 123S; ex '75 245; and ex '81 242GT; also Chrysler 2002 T&C and 2006 MINI Cooper
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posted by
someone claiming to be flyingbrick
on
Fri Mar 16 16:00 CST 2007 [ RELATED]
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My 85 760 GLE, 87 740 turbo and 90 740 turbo all hit 3K RPM at 80 mph. Both the 85 and 87 were automatic and the 90 has M46 with garrett T25BB. All have seen over 200K miles at those RPM's. But not really sure if the 760 N/A is comparable to the 940 N/A??? Hope this helps.
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Thanks for your input guys, I am pretty sure I have the "L" tranny as I can feel slight additional shift after it goes into OD on the Freeway. Last night I added some air to the tires and that helped as I now am slightly under 3K at 70
fuel economy is a big deal here in So. CA as regular gas now is impossible to find for under $3.15 and is most likely only going up between now and labor day
Is there any difference between CA emission cars and those from other states? my 940 is originally from Luisiana.
Cheers! Happy St. Patty's!
JJ
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Dear Dajet,
Good p.m. and may this find you well. 93 940 Rex/Regina 123K miles:
70 mph = 3,000 RPM
75 MPH = 3,200 RPM.
I believe cars set up for California emissions have an EGR (Exhaust Gas Recirculation) Valve.
Most turbo cars were equipped with the AW-71 transmission. Most non-turbo cars were equipped with the AW-71L transmission. The "L" designates a locking torque converter.
Hope this helps.
Yours faithfully,
spook
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Hi Spook,
Thanks for you input, since you seem to have the same rpm @ speed as I do, what kind of fuel consumption are you getting? I reside in CA but my 940 N/A wagon is from Luisiana, so, I assume I have the L and no EGR!
Passed the CA smog the other day but only by a narrow margin...
JJ
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Dear JJ,
May this find you well. To know if your car has EGR, look at the Vehicle Identification Number (VIN). It will begin with:
YV1 = Volvo
J = 940
W = Wagon, with airbag (or S = Sedan, with airbag)
88 = B230 Engine (or 83 = B230FD engine)
0 = Basic Version (or 1 = EGR, or 3 = Other Fuel/Ignition System)
The term "Basic Version" means Bosch Fuel Management/Ignition; "Other Fuel/Ignition System" = Rex/Regina.
Volvos were not often "made to order". It is entirely possible that cars with EGR - and thus salable in California - were sold in other markets. Thus, a car supplied to a Texas or Louisiana dealer may have been equipped with EGR. A dealer in those states would likely focus on the car's cosmetics, rather than on the emissions equipment, in deciding which cars to inventory/sell.
I get about 20-21mpg using fuels sold in Winter, in the northeast. There are no OBD (On-Board Diagnostics) malfunction codes. The car runs smoothly. It idles at about 600-650 RPM.
Hope this helps.
Yours faithfully,
spook
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