can any damage be done to my car?

someone said he thinks that this is not healthy for my car and can actually waste more gasoline

I been shifting around 2500 rpms lately and when I get too close to police, I shift at 2000 rpms

 

damn, that's pretty low... i don't think it's bad. When i'm just cruising i usually shift at 3k and the lowest like 2,700rpms.

 

i dun think u damage anything......i shift at 1k.....heheh is low......but dun go under 500rpm your engine shake.....

 

i highly doubt you'll be damaging your engine. sometimes, it's good to shift low when u have to take off w/o warming up the car.

 

2500 is low, but isnt that low...i dont see how it could damage anything though.

 

it also saves some gas too!

 

i would think shifting to low would consume more gas due to u having to apply more gas to make the car move.. who understands what i mean?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by teg-your-it &raquo;</TD></TR><TR><TD CLASS="quote">i would think shifting to low would consume more gas due to u having to apply more gas to make the car move.. who understands what i mean?</TD></TR></TABLE>

yes this is true since you have to hold the throttle down more to move the car

i.e. going 30 mph in 5th gear = wasting gas even if the RPM is really low

 

First off, high-load low-rpm running will see higher efficiency because you reduce pumping losses caused by the throttle choking off the intake charge (work is needed to suck the air past the thottle plate), and you get more energy for a given amount of fuel because the effective compression is higher (higher themal efficiency). This is why small engines can be so efficient, because they can be run in a higher load point for a given condition.

However, there is a point at which secondary shaking forces are high enough to cause structural damage to the engine, and this usually happens at lower rpms and especially with 4-cylinder engines. It's usually not recommended to subject passenger car 4-cylinder engines to high loads at less than 2000rpm. That heavy vibration you feel cannot even be filtered out by the engine mounts so think what forces the engine block must be withstanding when this is happening. Balance shafts can work wonders in reducing those secondary forces but you still usually can go no lower than about 1500rpm for those engines

 

i guess its ure own prefrence what u shift at. unless ure shifting at like 1000 or lower u should b straight...

 

Put it in 5th and ride out. lol

I somtimes shift around 2500-3000 around town and I cruise around in 5th all day.

I highly doubt it damages your engine. My bearings showed very very very little signs of wear and I have 80K on the motor.

But with my lightened flywheel. If I shift slowly. My revs drop very fast. So I have to sorta give the throttle a nice little pop so taht I dont stall her out.

 

I redline all the time lol j.k
I do to shift around 3k, It doesnt do any damage to your car.
I tried it. I filled it up twice, for the first time with full tank, I shifted at 3k, and for the second full tank, I shifted higher. I drove 30 miles more with shifting low.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Loveless &raquo;</TD></TR><TR><TD CLASS="quote">can any damage be done to my car?

someone said he thinks that this is not healthy for my car and can actually waste more gasoline

I been shifting around 2500 rpms lately and when I get too close to police, I shift at 2000 rpms</TD></TR></TABLE>
Wouldn't the above be defined as "bogging" the engine? And if it is,
I was taught that bogging an engine consistently will lead to all kinds of problems. I was taught that you should at least try to keep the engine in the "torque band" whenever possible. Even if it IS the lower part of it.

 

I normally shift at 2500 - 3k. 5k if im in a hurry

i think how smooth you shift is just as important when.

 

I don't really bog the engine, I just shift at 2500 and rev to around 2000 to match the next gear.

I been getting 200 miles per tank when I drove harder, it looks like I am going to get 250+ this tank when I shift lower and press on the gas slower

I'll try 3000 next tank and apply gas slower next tanks and see how it goes.

 

I shift at 8k when the engine is warm. It's worse on gas, but if that was a concern I wouldn't have bought the car.

Shifting too low can damage the engine. Don't bog it...plus, it's just morally wrong to make an engine put out 5% of what it can.

And, roadrunner is right, engines are most efficent at low (not too low) rpms, WOT.

 

i used to shift at 2000 but i noticed that when you go to the next gear the rpm starts off low which makes your engine work harder to pick up speed therefore wasting more gas.. now i shift at 3000. but 2500 when the engien is cold.

 

i feel like i shift a lot smoother with higher rpm.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Loveless &raquo;</TD></TR><TR><TD CLASS="quote">I don't really bog the engine, I just shift at 2500 and rev to around 2000 to match the next gear.

I been getting 200 miles per tank when I drove harder, it looks like I am going to get 250+ this tank when I shift lower and press on the gas slower

I'll try 3000 next tank and apply gas slower next tanks and see how it goes.</TD></TR></TABLE>

damn i usually get 300+ miles out of each tank and i normally shift between 3K-5K (depends on what time/place).

 

It is harder for your engine to go 15mph in 5th gear than it is in 1st gear, more load = more stress

 

the goal ought to be making the engine and transmission work as efficiently and as effectively across the powerband.

At best, use your judgement

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by IntEGNYC &raquo;</TD></TR><TR><TD CLASS="quote">the goal ought to be making the engine and transmission work as efficiently and as effectively across the powerband.

At best, use your judgement </TD></TR></TABLE>


UNLESS you are racing, you don't even NEED the tach to shift.
Just LISTEN to the sound of the engine and you can FEEL the correct shift point.
That point will change however depending on driving situation.
Speed, acceleration, economy, whatever,
The goal is to make engine/trans work together efficiently across the powerband, as posted above.

 

Whenever I let people drive my car, I specify that they cannot shift below 7500rpm.

 

what i was told is that if you shift on lower rpms (too low that is) your actrully putting more stress on the motor since its gonna be in a higher gearing and needs more effort to push the car thats why it starts to vibrate for a while till it picks up speed.

if you shift on decent rpms like (2000-3000) you dont put that much stain on the motor for having it in such a higher gear.

but this is what i heard maybe correct maybe wrong. but i would say it would just put more strain on the motor not necessary damaging it.

 

i find that as long as im not constantly flooring it (which i to do, hehe) then i get the same gas milage regardless of what rpm i shift at. when i first got my car i shifted like 2500-3000, now for everday driving its about 4000-5000