Is it good to travel at 3k?
10-14-2009, 11:11 PM
#21
TECH SAVANT
Join Date: Dec 2006
Location: Saint Augustine, FL
Posts: 10,938
10-15-2009, 12:29 AM
#23
2nd Gear Member
Join Date: Sep 2009
Location: So Cal
Posts: 205
Before owning my GT i was driving a 00 Contour Sport and the tach was around 2900 rpm at 80 mph and this was freeway driving everyday. Car never had a hiccup and was built like a tank so i'm sure running 3k is fine.
10-15-2009, 09:05 AM
#24
4th Gear Member
Join Date: Aug 2007
Location: Shelbyville, Indiana
Posts: 1,088
What rpm do you think motors had at 80 mph before overdrive transmissions were invented? I have taken several trips to the west coast with the motor running continuously between 3500-4000 rpms and motors today are far better built than they were back then.
10-18-2009, 02:32 AM
#25
4th Gear Member
Thread Starter
Join Date: Jul 2008
Location: Connecticut
Posts: 1,140
Alright, you have all made your point, and are likely far more accurate than I, lol
If you can just understand my concern, because the first long block in my car's engine threw a rod from the factory at 46,000 miles! I think the previous 3 owners really abused the car.
Is is true that doing donuts with not enough oil (5 quarts) can contribute to a possible spun bearing?
Why have I seen a video of a guy falling asleep in his car in PARK, that fell asleep with his foot on the gas and the car running, and the car was redlining for about 3 minutes before smoke started pouring out? I thought that someone on here said that our engines could theoretically run at redline all day.
What is the significant danger of running your car to redline RPMs when the engine is cold? Why does this do more damage?
The faster you "rev" your car up in the RPM band, does that increase the likeliness of spinning a rod bearing or do excessive damage? You know, like if you just SLAM your foot on the gas extremely quickly for a quick rev.
If you can just understand my concern, because the first long block in my car's engine threw a rod from the factory at 46,000 miles! I think the previous 3 owners really abused the car.
Is is true that doing donuts with not enough oil (5 quarts) can contribute to a possible spun bearing?
Why have I seen a video of a guy falling asleep in his car in PARK, that fell asleep with his foot on the gas and the car running, and the car was redlining for about 3 minutes before smoke started pouring out? I thought that someone on here said that our engines could theoretically run at redline all day.
What is the significant danger of running your car to redline RPMs when the engine is cold? Why does this do more damage?
The faster you "rev" your car up in the RPM band, does that increase the likeliness of spinning a rod bearing or do excessive damage? You know, like if you just SLAM your foot on the gas extremely quickly for a quick rev.
10-18-2009, 11:07 AM
#28
4th Gear Member
Join Date: Feb 2007
Location: Austin, TX
Posts: 1,139
Why have I seen a video of a guy falling asleep in his car in PARK, that fell asleep with his foot on the gas and the car running, and the car was redlining for about 3 minutes before smoke started pouring out? I thought that someone on here said that our engines could theoretically run at redline all day.
What is the significant danger of running your car to redline RPMs when the engine is cold? Why does this do more damage?
The faster you "rev" your car up in the RPM band, does that increase the likeliness of spinning a rod bearing or do excessive damage? You know, like if you just SLAM your foot on the gas extremely quickly for a quick rev.
What is the significant danger of running your car to redline RPMs when the engine is cold? Why does this do more damage?
The faster you "rev" your car up in the RPM band, does that increase the likeliness of spinning a rod bearing or do excessive damage? You know, like if you just SLAM your foot on the gas extremely quickly for a quick rev.
I don't think he said they could run at redline all day. I think he was saying you could put a brick on the gas pedal at 3k and it would run until it runs out of gas. Redline is a different story. I would not try that one!
The reason you shouldn't run your car hard before it is up to temperature, is because the oil hasn't had time to properly lubricate the components. Also, under heat all the engine components expand so I would argue that the block, being a large, mostly solid piece of metal, takes longer to heat up and reach that expansion point than the internal engine components. So if you rev high when the components have expanded and the block hasn't, you're putting extra stress on the internals. The expansion is REALLY minimal and it's unlikely that this alone will cause your block to fail, but if it occurs often, over time the internals will weaken. Of course this is just my own personal thinking and I'm by no means a motor guru. Whatever the reasons are, you should always let your car get up to temp before running it hard.
And, like someone else said you can punch the gas as hard as you can as long as the car is in gear. It's when it's not in gear and the engine is under a much lighter load that you have to be careful.
Last edited by PaintballFreak; 10-18-2009 at 11:11 AM.
10-18-2009, 04:02 PM
#29
4th Gear Member
Join Date: Mar 2008
Location: asdf
Posts: 1,600
Regardless to whether running your motor at a constant 3K rpm is good or bad, I would feel like it's wrong and slow down.
To me it doesn't feel right to do even though (as has been established in this thread) it won't do any damage.
To me it doesn't feel right to do even though (as has been established in this thread) it won't do any damage.
10-18-2009, 04:15 PM
#30
You guys should drop the whole "facepalm" posting crap when a member asks a legit question. (OH BUT HOW DO I KNOW ITS LEGIT??? Because the OP didn't know **** about it, that's how).
That's because you still have the sissy stock gears.
3K seems high because it's smack in the middle of the tach (ignore the 8000 rpms & just look at the redline instead), however I've been up there @ 3K at about 80mph in my 4.10s numerous times and my car is just fine. 3K with stock gears in 5th is really hauling *** though, there's more concern for personal safety/tickets than if the engine can handle it.
Isn't the stock 'free rev' limiter a bit higher, like at 5800 or 6000 rpms?
3K seems high because it's smack in the middle of the tach (ignore the 8000 rpms & just look at the redline instead), however I've been up there @ 3K at about 80mph in my 4.10s numerous times and my car is just fine. 3K with stock gears in 5th is really hauling *** though, there's more concern for personal safety/tickets than if the engine can handle it.
Isn't the stock 'free rev' limiter a bit higher, like at 5800 or 6000 rpms?