4000 rpm going uphill bad for the car?

[newtomit]

Hi all,

Haven't been around here for a few weeks. So much to catch up on

Yesterday, I merged onto an uphill freeway and quickly increased the speed to keep up with traffic that was going 60mph. The rpm gauge hit 4000! It didn't stay there long, only maybe 5 minutes until I was able to match traffic speed then released the pressure on the gas pedal right away. I always try to keep my rpm below 3000 and the highest before this was 3500. Now I'm a little bit worried that I worked the car up too much for a CVT. Probably seems silly

[thx1138guy]

Wow, that's one long hill if it takes you five minutes to climb it. Do you drive on this freeway often?

There's no harm running your engine at 4000 rpm for five minutes as long as the engine or cvt don't overheat. Vehicle manufacturers regularly test engines on dynamometers at wide open throttle for hours at a time.

[Dirk Diggler]

Hi all,

Haven't been around here for a few weeks. So much to catch up on

Yesterday, I merged onto an uphill freeway and quickly increased the speed to keep up with traffic that was going 60mph. The rpm gauge hit 4000! It didn't stay there long, only maybe 5 minutes until I was able to match traffic speed then released the pressure on the gas pedal right away. I always try to keep my rpm below 3000 and the highest before this was 3500. Now I'm a little bit worried that I worked the car up too much for a CVT. Probably seems silly

5 mins? You sure? I have to merge on to highways were the majority are going 75 mph and Ill hit 4k rpms and hold it for like 10 seconds to get up to speed then it kicks down to 3500 rpms and Im cruising around 70 to 75 mph. Either way your not even close to redlining. If you just slowly depress down on the pedal, building ups rpms, your treating your cvt right. If you punch it hard all the time or use Ds mode all the time Id say your engaging in riskier behavior.

[dspace9]

Hi all,

Haven't been around here for a few weeks. So much to catch up on

Yesterday, I merged onto an uphill freeway and quickly increased the speed to keep up with traffic that was going 60mph. The rpm gauge hit 4000! It didn't stay there long, only maybe 5 minutes until I was able to match traffic speed then released the pressure on the gas pedal right away. I always try to keep my rpm below 3000 and the highest before this was 3500. Now I'm a little bit worried that I worked the car up too much for a CVT. Probably seems silly

I have the 5 speed manual, but even still I don't think 3000+ rpm is a big deal for your Mirage.

I have cruised at over 5500 rpm in 5th gear, and my Dad used to cruise around in 3rd gear at around 45 miles an hour or 80 km's. He doesn't drive now, but he drove the Mirage at high revs all the time even more than me, but never shifted either, so he had an ear from old Datsuns etc. that my Mirage can take it.

[MacClyver]

4000 rpm is no problem, high rpm can wear down on the head where the camshaft rotates but that's no really a problem until you get near 7000 rpm. If you had a 2017+ with the roller bearings for the cam it might not be a problem even then.

[Eggman]

4000 rpm is no problem, high rpm can wear down on the head where the camshaft rotates but that's no really a problem until you get near 7000 rpm.

Huh! I've never heard of a camshaft wearing down quicker because of engine speed. The more you know!

Or maybe I'm misunderstanding what you are saying because you say "high rpm can wear down on the head where the camshaft rotates..." What part of the head wears down?

If you had a 2017+ with the roller bearings for the cam it might not be a problem even then.

I've wondered if roller rockers would wear faster than conventional designs because it's one more moving part to wear out. I guess time will tell which design lasts longer.

[Fummins]

4000 rpm is no problem, high rpm can wear down on the head where the camshaft rotates but that's no really a problem until you get near 7000 rpm. If you had a 2017+ with the roller bearings for the cam it might not be a problem even then.

What?

[DottandDolores]

I-90 Mass Pike between exit 2 & 3 climbs to 1724 feet and I-88 in NY has some long climbs 4000+ rpms no problem.

[Dirk Diggler]

I want to see this LA on ramp that takes 10 mins to get off of lol.

[inuvik]

As long as you don’t starve it for oil by not enough or running sludge you could run this little motor 4000 rpm all day. Torque peak in the 3A92 is at 4000 rpm also. Interesting at 4000 rpm the engine is delivering a tire melting 56 horsepower. So yah, 4000rpm isn’t a issue.

1000 rpm:	47.1 Nm / 34.7 lb-ft / 4.9 kW / 6.7 PS / 6.6 hp
1100 rpm:	53.5 Nm / 39.5 lb-ft / 6.2 kW / 8.4 PS / 8.3 hp
1200 rpm:	58.8 Nm / 43.4 lb-ft / 7.4 kW / 10 PS / 9.9 hp
1300 rpm:	63.3 Nm / 46.7 lb-ft / 8.6 kW / 11.7 PS / 11.5 hp
1400 rpm:	67.2 Nm / 49.6 lb-ft / 9.9 kW / 13.4 PS / 13.2 hp
1500 rpm:	70.6 Nm / 52.1 lb-ft / 11.1 kW / 15.1 PS / 14.9 hp
1600 rpm:	73.5 Nm / 54.2 lb-ft / 12.3 kW / 16.7 PS / 16.5 hp
1700 rpm:	76.1 Nm / 56.1 lb-ft / 13.5 kW / 18.4 PS / 18.2 hp
1800 rpm:	78.4 Nm / 57.8 lb-ft / 14.8 kW / 20.1 PS / 19.8 hp
1900 rpm:	80.5 Nm / 59.4 lb-ft / 16 kW / 21.8 PS / 21.5 hp
2000 rpm:	82.4 Nm / 60.8 lb-ft / 17.3 kW / 23.5 PS / 23.1 hp
2100 rpm:	84 Nm / 61.9 lb-ft / 18.5 kW / 25.1 PS / 24.8 hp
2200 rpm:	85.6 Nm / 63.1 lb-ft / 19.7 kW / 26.8 PS / 26.4 hp
2300 rpm:	87 Nm / 64.2 lb-ft / 21 kW / 28.5 PS / 28.1 hp
2400 rpm:	88.2 Nm / 65 lb-ft / 22.2 kW / 30.1 PS / 29.7 hp
2500 rpm:	89.4 Nm / 65.9 lb-ft / 23.4 kW / 31.8 PS / 31.4 hp
2600 rpm:	90.5 Nm / 66.7 lb-ft / 24.6 kW / 33.5 PS / 33 hp
2700 rpm:	91.5 Nm / 67.5 lb-ft / 25.9 kW / 35.2 PS / 34.7 hp
2800 rpm:	92.4 Nm / 68.1 lb-ft / 27.1 kW / 36.8 PS / 36.3 hp
2900 rpm:	93.3 Nm / 68.8 lb-ft / 28.3 kW / 38.5 PS / 38 hp
3000 rpm:	94.1 Nm / 69.4 lb-ft / 29.6 kW / 40.2 PS / 39.6 hp
3100 rpm:	94.9 Nm / 70 lb-ft / 30.8 kW / 41.9 PS / 41.3 hp
3200 rpm:	95.6 Nm / 70.5 lb-ft / 32 kW / 43.6 PS / 42.9 hp
3300 rpm:	96.3 Nm / 71 lb-ft / 33.3 kW / 45.3 PS / 44.6 hp
3400 rpm:	96.9 Nm / 71.5 lb-ft / 34.5 kW / 46.9 PS / 46.2 hp
3500 rpm:	97.5 Nm / 71.9 lb-ft / 35.7 kW / 48.6 PS / 47.9 hp
3600 rpm:	98 Nm / 72.3 lb-ft / 36.9 kW / 50.2 PS / 49.5 hp
3700 rpm:	98.6 Nm / 72.7 lb-ft / 38.2 kW / 52 PS / 51.2 hp
3800 rpm:	99.1 Nm / 73.1 lb-ft / 39.4 kW / 53.6 PS / 52.8 hp
3900 rpm:	99.5 Nm / 73.4 lb-ft / 40.6 kW / 55.3 PS / 54.5 hp
4000 rpm:	100 Nm / 73.7 lb-ft / 41.9 kW / 57 PS / 56.1 hp
4100 rpm:	100 Nm / 73.7 lb-ft / 42.9 kW / 58.4 PS / 57.5 hp
4200 rpm:	99.9 Nm / 73.7 lb-ft / 43.9 kW / 59.8 PS / 58.9 hp
4300 rpm:	99.8 Nm / 73.6 lb-ft / 44.9 kW / 61.1 PS / 60.2 hp
4400 rpm:	99.7 Nm / 73.5 lb-ft / 45.9 kW / 62.5 PS / 61.6 hp
4500 rpm:	99.5 Nm / 73.4 lb-ft / 46.9 kW / 63.8 PS / 62.8 hp
4600 rpm:	99.3 Nm / 73.2 lb-ft / 47.8 kW / 65.1 PS / 64.1 hp
4700 rpm:	99.1 Nm / 73.1 lb-ft / 48.8 kW / 66.3 PS / 65.4 hp
4800 rpm:	98.8 Nm / 72.9 lb-ft / 49.7 kW / 67.5 PS / 66.5 hp
4900 rpm:	98.4 Nm / 72.6 lb-ft / 50.5 kW / 68.7 PS / 67.7 hp
5000 rpm:	98.1 Nm / 72.3 lb-ft / 51.4 kW / 69.9 PS / 68.8 hp
5100 rpm:	97.7 Nm / 72.1 lb-ft / 52.2 kW / 71 PS / 69.9 hp
5200 rpm:	97.2 Nm / 71.7 lb-ft / 52.9 kW / 72 PS / 70.9 hp
5300 rpm:	96.7 Nm / 71.3 lb-ft / 53.7 kW / 73 PS / 71.9 hp
5400 rpm:	96.2 Nm / 70.9 lb-ft / 54.4 kW / 74 PS / 72.9 hp
5500 rpm:	95.7 Nm / 70.6 lb-ft / 55.1 kW / 75 PS / 73.9 hp
5600 rpm:	95.1 Nm / 70.1 lb-ft / 55.8 kW / 75.8 PS / 74.7 hp
5700 rpm:	94.4 Nm / 69.6 lb-ft / 56.3 kW / 76.6 PS / 75.5 hp
5800 rpm:	93.8 Nm / 69.2 lb-ft / 57 kW / 77.5 PS / 76.3 hp
5900 rpm:	93.1 Nm / 68.7 lb-ft / 57.5 kW / 78.2 PS / 77.1 hp
6000 rpm:	92.3 Nm / 68.1 lb-ft / 58 kW / 78.9 PS / 77.7 hp
6100 rpm:	90.4 Nm / 66.7 lb-ft / 57.7 kW / 78.5 PS / 77.4 hp
6200 rpm:	87.9 Nm / 64.8 lb-ft / 57.1 kW / 77.6 PS / 76.5 hp
6300 rpm:	84.7 Nm / 62.5 lb-ft / 55.9 kW / 76 PS / 74.9 hp
6400 rpm:	81 Nm / 59.7 lb-ft / 54.3 kW / 73.8 PS / 72.7 hp
6500 rpm:	76.7 Nm / 56.6 lb-ft / 52.2 kW / 71 PS / 70 hp