E46 Fanatics Forum banner
  • Hey everyone! Enter your ride HERE to be a part of October's Ride of the Month Challenge!
1 - 20 of 20 Posts

·
Registered
Joined
·
51 Posts
Discussion Starter · #1 ·
Don't flame me, but I have always been under the influence that if you floor an automatic, it puts unnecessary wear and tear on the engine and makes it lose life.

As a result I have never ever floored my mercedes ml320, or any other automatic car for that matter.

Is there any truth to this?
 

·
can ya spare some change?
Joined
·
738 Posts
Auto or Manny, flooring cause extra wear on the engine from the sudden large changes in stress on the rods and pistons.... for those that are engineers..... the greatest wear on the engine occurs when the delta in stress over time is the greatest....... or in laymens terms... when you floor it from stand still, when you start your engine, and when you down shift to 3rd from 5th going 100mph :eeps:
 

·
Registered
Joined
·
27 Posts
I heard that topping out your car burn those harmful carbon deposits that accumulate in your engine......correct?
 

·
Registered
Joined
·
543 Posts
really? so going like 150 will clean my engine??
 

·
Registered
Joined
·
127 Posts
that's why you bought your bimmer for, right?
floor it hard.:thumbup:
 

·
Registered
Joined
·
913 Posts
Chim said:
Don't flame me, but I have always been under the influence that if you floor an automatic, it puts unnecessary wear and tear on the engine and makes it lose life.



Is there any truth to this?
YES!YES!YES.....bad....:D . I think you have answered your own question. If you abuse your engine and you keep the car long enough, you will pay in extra maintaince and repair.
 

·
Registered
Joined
·
670 Posts
not to mention the gasoline you'll be burning off. with each gallons of gas costing an arm and a leg these days, flooring the car constantly might not be the most economical way to drive.
 

·
can ya spare some change?
Joined
·
738 Posts
AzN330iGiRliE said:
I heard that topping out your car burn those harmful carbon deposits that accumulate in your engine......correct?
there is some truth to that, not necessarily toppping out your car per say, but letting the throttle open up gradually on the highways. This is why people say cars with high highway mileage is better than high city mileage.
 

·
Got Mis-shift?
Joined
·
720 Posts
negari said:
really? so going like 150 will clean my engine??

From what I heard, yes. it burns the carbon build ups. you don't have to go 150mph though:D just go for a long drive and it will clean it.
 

·
Registered
Joined
·
563 Posts
I floor it when ever I want to. Just make sure the engine is warmed up (oil and coolant temp) then your fine. :D

As for cleaning your engine, my shop foreman told me that it is the most efficient to crusie 120km/h (for a while) and the engine will clean itself.

But I guess it also doesn't hurt to cruise at WOT once in a while (provided that the evironment is safe to do so)...this is why there is the Autobaun.....:D

I realize that when my engine is city driven, I get less gas mileage. But after "decarbonizing my engine" I notice smoother idling and better gas comsumption.......:eeps:
 

·
Registered
Joined
·
3,060 Posts
Well one thing to consider is that the tranny has high tolerances built in to it.

The existing tranny can handle 260HP although rated higher and being a steptronic, they expect sudden shift changes as those changes are under the tranny control. The EGM contols the amount of shift delay and timing. So flooring it will not do anything outside of what the car was designed to do. When you downshift from 3rd from 5th, the computer knows whether it will allow you to downshift or not and if your not in a proper RPM range for that downshift, it won't allow you.



PowerDrift said:
Auto or Manny, flooring cause extra wear on the engine from the sudden large changes in stress on the rods and pistons.... for those that are engineers..... the greatest wear on the engine occurs when the delta in stress over time is the greatest....... or in laymens terms... when you floor it from stand still, when you start your engine, and when you down shift to 3rd from 5th going 100mph :eeps:
 

·
Registered
Joined
·
9 Posts
re

Obviously abusing your car will make it die sooner. But opening it up every once in a while isn't a bad thing. With a car like an M3, or other "super car" if you will, it's built to take high stresses. I'm no engineer here, so I'm just making a wild assumption. German engineering has been phenominal in my experiences. I remember being on the Autobahn seeing cars the size and style of a Geo Metro do things that would destroy a nice American car. lol.

Now as far as for cleaning the engine, I have to believe that some truths lie here. My dad had always told me that opening it up every now and again will help clean things out. My Talon had been running like it was on 2 cylinders and the shop wanted about 350 bucks to put it up on a computer to see what was up. I didn't have the money so my dad said to go dump 2 bottles of injector/engine cleaner in the gas and find and open place and just goose it and that if it blew up he'd cover repairs/replacement, but 5 dollars was better to try than 350. I ran out onto a nice wide open street near me and just got on it. She ran like a lazy pregnant cow up until about 5000rpm's and maybe like 2mph (exageration but that's how it felt.) All of a sudden there was some chuggin and a small bang and a puff of black/grey/blue smoke came out of the back and all of a sudden she ran like brand new.

Well, sorry for the long 1st post here. I hope that at least offers some small help to ya :)
 

·
Registered
Joined
·
323 Posts
I would think that the engineers would have made these cars to take a decent amount of stress without doing too much to shorten the life of the car.
 

·
Registered
Joined
·
244 Posts
That's why you get a lease :D Drive hard as you want for 3 years...return it, and let the dealership fix it.:thumbup: And then another car (M3 M3 M3 M3 M3...) for 3 years...drive it hard again! I'm assuming that by the time I'm 30, BMW AG will know who Phillip Korkis is..."notorious for killing leased BMW's" :D
 
1 - 20 of 20 Posts
Top