dabest09

iTrader: (1)

Just wanted some input on what is better for the motor when you get on it hard and go through the rpm range, then let off.

Is it better to let off the gas at a high rpm and let the car slow down by itself from the drivetrain?

Or is it better to press in the clutch and let the rpms drop suddenly and coast?

Or, should you shift into a higher gear then let off the gas?

I do the third option because I feel like it's not putting a ton of stress on the motor. Sudden rpm drops from 5000 to 1000 seem bad to me, and so does letting the car slow down by using the drivetrain components. Looking for some opinions on what's best.

V68Sweep

I'd go with the 3rd option too. I definitely don't like the motor to be slowing down at like 5,000 RPMs, just make me feel uneasy inside. I shift up and let the motor slow from much lower RPMs.

arioch

I drop the rpms all the way off, sometimes in that same gear with the clutch in sometimes i shift up....the car is babied rediculously tho......maybe a full throttle blast every 2 months

the_merv

iTrader: (88)

I'll coast, but I'll be in a higher gear that way there is some control in the drivetrain.

71novaguy

iTrader: (2)

press in the clutch and hold it a bit. it will drop down some rpm, shift to the next gear and keep rolling. its not going to hurt it to let it drop rpm. there is no stress on the engine pushing in the clutch.

dabest09

iTrader: (1)

There is no stress on the engine pressing in the clutch. But you would think there is a lot of stress pressing in the clutch after the engine is under load all the way into 5k rpm then the rpms just drop suddenly, am I right?

ULTIMATEORANGESS

iTrader: (4)

i try to keep my revs down after winding my cars out.

71novaguy

iTrader: (2)

if your worried about the trans, then press in the clutch, slip it in neutral, and relase the clutch.

dabest09

iTrader: (1)

Not so much the trans, just the motor itself. But I can't see that being good either for the trans either coming down the rpm range taking all the stress.

71novaguy

iTrader: (2)

do you ever rev the engine up while sitting still. you know, give a little WOT sitting in driveway just to show off or hear the exhaust roar?

dabest09

iTrader: (1)

Not really, lol. Maybe to 2500 rpms. I baby it so much.

the_merv

iTrader: (88)

I bounce it off the limiter till it's 150*..then let it idle to operating temp.

71novaguy

iTrader: (2)

thats a creative way to warm it up.


what Im getting at is its the same thing. it doesnt hurt it to let the rpm fall back down. unless your tuning is off and it loads up on fuel, there is no harm in it.

the_merv

iTrader: (88)

I was joking...if anyone does that for real I'm not responsible for your failure.

HVYMTL

hahaha that just reminds me of exhaust videos where they do a cold start, then immediately peg the rpms to show off the "sick tone"

dabest09

iTrader: (1)

^^^^ Makes me cringe!

bad_408_vert

iTrader: (6)

LMFAOO I like that , "sick tone"...sadly kids in my area do/ talk like that.

soundengineer

iTrader: (16)

honestly none of the methods are really any more harsh than another...


Version 1:
you are only putting stress on the parts when you are trying to accelerate...
and letting it throttle itself down while rolling will suck dirt and debris off the cylinder walls...
its how you are supposed to drive when its new in part of the break in process...
unless you are coasting from 8000 rpm, its not going to hurt anything or put any stress on things from 5500 or less
you also save on gas because of Deceleration fuel cutoff....the entire time you are slowing down till it reaches a set rpm to re-enable the fuel.

Version 2:
is no big deal, probably not saving any gas...Deceleration fuel cutoff is in effect during only very briefly as the rpms drop so quickly compared to version 1 which is in Deceleration Fuel cutoff the entire time its coasting down to a lower rpm

Version 3:
same as #2..with a bit of #1 mixed in..but you have the disadvantage of clutch wear and tear...why shift if you dont need to..

theres not really a good/better/best to this question...
its just gonna be personal preference and driving style...

all 3 could and should be used during your daily driving...totally dependent on what you are doing, where you are going, and who you might accidentally **** off ..LOL