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#3353917 - 04/26/14 03:11 PM Re: How high do you rev your engine? [Re: A_Harman]
jimbrewer Offline


Registered: 12/30/12
Posts: 1136
Loc: New Mexico, USA
I'll commonly take it up to 6K out of 7K available. 302 hp 3.7L Ford, automatic. If I have to accelerate hard, why hesitate? The scenario is turning right onto a busy 4 lane road with pretty fast traffic (stop lights over a mile apart). I want to get up to speed and I want to do it as soon as possible for safety's sake. So as soon as the wheels are square, I punch it pretty hard for a couple of seconds.

Merging onto a lightly traveled highway at night. I could merge at any old speed, but I'm worried about a maniac coming at me at a really excessive speed. I want to be at 65 mph and climbing when I'm on the road. So I puch it pretty hard there for a couple of seconds too.

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#3354012 - 04/26/14 05:34 PM Re: How high do you rev your engine? [Re: A_Harman]
Benzadmiral Offline


Registered: 10/12/05
Posts: 4666
Loc: Da Swamp
I'm concerned with fuel economy, so I get the Regal up to cruising speed swiftly and then let it settle at 1500 rpm for speeds up to 45 or so, 2000 for above that. Though, if it's warmed up, I will flick the transmission into manual mode and drop a gear, rev it to 3500-4000 if I'm shooting up a ramp or pulling up a long grade like the Miss. River bridge.
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-- Paul W. (The Benzadmiral)
('11 Buick Regal CXL, charcoal/cream, 2.4L NA)
http://benzadmiral-uncle.blogspot.com/

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#3354212 - 04/26/14 09:41 PM Re: How high do you rev your engine? [Re: A_Harman]
CBR.worm Offline


Registered: 05/10/05
Posts: 1754
Loc: Jupiter, Fl
it depends on what car I am driving.

Originally Posted By: A_Harman
I'm sort of taking an informal survey of driver's habits.

Under different conditions, what are your shift points for engine speed when you are driving? i.e.: Normal stop and go traffic, accelerating onto a highway, max throttle acceleration, etc.

What max engine speed do you consider comfortable when you're cruising down the highway?

What kind of rpm wouldn't you mind hearing on an all-day drive?

What engine speed do you consider to be "lugging", and will downshift to get out of it?




in the G35, I typically shift around 4K. I usually redline it a few times a day just for fun ~7,200rpm. At 80mph it is just over 3k. 4k is fine all day, it gets kind of harsh past ~4,500. I would consider below 1,200 to be lugging it.

In the FX45 (auto) it typically shifts around 2.5k. Just a tiny bit more throttle and it will hold each gear to about 5k. It is also just over 3k at 80, and it is not objectionable at any speed. It feels and sounds smoother at higher RPM, but power falls off around 6k, so I rarely exceed that. It is not as much fun to drive fast, and uses a lot more gas, etc. Unlike the G which seems built to rev, the FX feels best between idle speed and about 4.5k

The BMW rarely exceeds 3k. Its torque peak is at about 3k and that's where it likes to be. At 80 it is around 2,700rpm. Driving it aggressively it is quick to redline, but there is not much additional speed - or at least it is not very rewarding to push it.

The bike... it is totally comfortable at 13,000rpm, not too happy below about 6k. However, due to traffic regulations, I typically shift at or below 5k to avoid jail time. I think at 80mph it is around 6k.

It varies so much by vehicle, engine and transmission. I had an Oldsmobile that never hit 2,500rpm in daily driving. I also had a Mitsubishi V6 that would pass 5k with every shift, driving slowly.
_________________________
'06 Infiniti G35 Sedan 6MT - 160k

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#3354242 - 04/26/14 10:04 PM Re: How high do you rev your engine? [Re: A_Harman]
01rangerxl Offline


Registered: 04/08/06
Posts: 8782
Loc: Birmingham, AL
It varies a lot.

Most of my driving currently is on city streets. Above 3K RPM I'm breaking the law, about to run a light, and/or about to hit someone. Not much room for fun.

On the interstate, 4K, 5K when I have room to do it.

Around the city, shifting at 2500 RPM is not uncommon. I just don't want to have to slam on the brakes, so I take it easy. I would like to shift higher than that. The truck firms up the shifts at higher RPM, which I like. At lower RPM it thinks I want butter shifts.
_________________________
2002 Ford Ranger XLT | 3.0 V6 / 5-Speed Automatic / 2WD | 185K miles
1994 Ford Ranger STX | 4.0 V6 / 5-Speed Manual / 4X4 | 180K miles

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#3354539 - 04/27/14 10:46 AM Re: How high do you rev your engine? [Re: A_Harman]
sciphi Offline


Registered: 03/24/07
Posts: 9698
Loc: Upstate NY
I wind my Cruze out 2-3 times a week or so to the 6500 RPM redline. I figure it's good for the variable-capacity oil pump to be working at full capacity to flush out all the little VVT passages and otherwise sling oil where it doesn't normally get, even more so with the splash-lubricated manual transmission. Otherwise it's about 3000 RPM since it accelerates just fine with the turbo boosting away.

At 60 mph it's at 1700 RPM, and it's doing 2200 RPM at 70. Quite low for a 1.4l engine, even turbocharged.


Edited by sciphi (04/27/14 10:48 AM)
_________________________
2013 Toyota RAV4 XLE
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#3354795 - 04/27/14 04:12 PM Re: How high do you rev your engine? [Re: A_Harman]
andyd Offline


Registered: 09/25/04
Posts: 4933
Loc: Marshfield , MA
The 528e has a 5200 rpm limiter that shuts off the fuel injectors. Holding the Getrag 4hp22 in 2, they'll do 70mph . 5k in 3 is 105 mph. 3k in D is 88 mph. Haven't bothered to see what the top end in the Rat's 4.0 V6 is. I'm afraid of breakage. I am underwhelmed that the Ford's metallurgy is inferior to that of the older BMW.
_________________________
1988 BMW 528e 20w50 dino, STP filter

1994 Ranger ,the Rat, 5w30 dino, STP filter

'09 Camry SE, Valvoline bulk 5w30 and ? filter

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#3354808 - 04/27/14 04:25 PM Re: How high do you rev your engine? [Re: A_Harman]
dailydriver Offline


Registered: 03/14/06
Posts: 8752
Loc: Bucks County, Pa.
I have the rev limiter set to 5850 RPM right now (via a Diablosport Predator handheld), and a 5800 RPM pill in the Auto Meter shift light.

I rarely get it up to those levels though, save for when I do an 'Italian Tune Up', when I might even raise the limiter to 6K, or even 6.1K.

I usually short shift at 2000-3000 revs for most driving around town, and will run it to 4K-5.2K revs when entering busy highways/roads to get up to speed and not impede traffic. wink

As you know, these LS1 f bodies' T56 gearboxes have a CRAZY .50 overdrive 6th gear, so even with a 3.73 rear axle ratio gearset, it is only turning ~ 1750 or so revs at 65-70 mph, steady state highway cruising (0NE of the reasons WHY these cars can get > 30MPG on the highway! wink smile ).
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2000 Z28 1SC 6 speed 180K miles
4L Motul 300V 0W-40, 2L Motul 300V 0W-20
M1-206 oil filter
Motul Gear 300 75W-90
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#3355134 - 04/27/14 09:42 PM Re: How high do you rev your engine? [Re: A_Harman]
garlicbreadman Offline


Registered: 06/14/10
Posts: 854
Loc: USA
01 5spd integra
Daily driving: 2.7-3k rpms
Accelerating onto onramps and such: 3.5-4k rpms
When i feel like wasting gas: 7k rpms

In the past 30k miles, I've been winding it up to redline a few times a tank. It feels more powerful now at 155k than when i bought it at 55k.

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#3355152 - 04/27/14 10:09 PM Re: How high do you rev your engine? [Re: A_Harman]
surfstar Offline


Registered: 09/16/04
Posts: 5580
Loc: Santa Barbara, CA
Occasional redline.
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"I love the poorly educated"

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#3355257 - 04/28/14 12:57 AM Re: How high do you rev your engine? [Re: A_Harman]
HTSS_TR Offline


Registered: 04/17/06
Posts: 19074
Loc: Lake Forest, CA
Honda S2000, even the AP2, has very little torque below 3k RPM, it only moves when engine is in 3-5k and it sings beautiful sound when the rev passes 6k till 8200-8300 fuel cut-off.

With short gearing the engine is turning around 4500 RPM at 80 MPH in 6th.
_________________________
'00 MB E430
'04 Honda S2000
'06 Volvo V70
'14 Honda Accord LX
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#3359450 - 05/01/14 11:37 PM Re: How high do you rev your engine? [Re: A_Harman]
rationull Offline


Registered: 04/28/07
Posts: 2780
Loc: California, USA
For me in my WRX, normal driving I shift around 2500-3000 RPM, highway "mild fun" after it's warmed up probably 4000, max acceleration between 5000 and the 6.5k redline. Cruising is comfortable anywhere from 2.5k to probably 3.25k, wherever it falls in 5th gear at reasonable speeds.

In this car anything under 1.75k or so will feel like it's lugging except in 1st or 2nd gear, maybe 3rd with only very light throttle. I will downshift in general to keep it above 2k. If I want to accelerate soon, a downshift to keep it above 3k is even better, ideally sitting at that speed long enough for the turbo to spool up smile

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#3359457 - 05/01/14 11:49 PM Re: How high do you rev your engine? [Re: A_Harman]
KitaCam Offline


Registered: 11/16/12
Posts: 2115
Loc: SunnySouthFlorida
I tried shifting @ 2.5k (rather than my usual 3-3.5k) from a light the other day and the guy behind me impatiently honked at me...oh well...
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#3359513 - 05/02/14 05:48 AM Re: How high do you rev your engine? [Re: A_Harman]
Cujet Offline


Registered: 02/15/03
Posts: 5588
Loc: Jupiter, Florida
My 2004 S2000 (AP2) has the larger 2.2L engine with 8000 RPM redline. It's been modified with a turbo kit, stand alone engine management computer and a large number of other parts.

The engine regularly reaches the 8500 RPM fuel cutoff. I'm not going to claim it's going to last forever operating like this. However, the head is capable of just shy of 12,000 RPM before valve float sets in. The bottom end seems to hold up well for the others operating an AP2 like this.

Failures are more likely to be head gasket related. Or detonation related/cylinder failure.
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Turbo's rule.

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#3359919 - 05/02/14 03:24 PM Re: How high do you rev your engine? [Re: A_Harman]
SteveSRT8 Offline


Registered: 10/10/08
Posts: 17567
Loc: Sunny Florida
Tune is the major player, especially the higher the boost, IMO.
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J. William Fulbright
Best ET-12.79 @ 111 mph
4340 pounds, Street tires
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