occasionally red-lining?

ShockWave · 04-10-2012, 10:43 PM

I read that driving your 370z carefully can actually cause more harm to an engine than occasionally red-lining it and driving it like it was made to be driven. High engine RPM's equals high combustion temperatures which helps burn off the carbon that builds up on the cylinder head and valves, which can otherwise lead to worse fuel economy, power loss, and worse... Is this true?

Thechidz · 04-10-2012, 10:46 PM

I hope so

edconline · 04-10-2012, 10:49 PM

Quote:

Originally Posted by Thechidz

I hope so

LOL! Me too.

onzedge · 04-10-2012, 10:59 PM

Quote:

Originally Posted by Thechidz

I hope so

Quote:

Originally Posted by edconline

LOL! Me too.

ShinyBlueZ · 04-11-2012, 01:12 AM

I prefer to red-line every single gear.. and I often do.

Though after putting in $50 and getting like 7.5 gallons the other night.. you will now often find me doing 40 in 6th, in the right lane.

1500 rpm shifts baby!

Snakes709 · 04-11-2012, 01:50 AM

I rev my EvoX to 7500-7900 3 times a day in 3rd...only because im tuning..lol.

mhcoss · 04-11-2012, 02:20 AM

Quote:

Originally Posted by ShinyBlueZ

I prefer to red-line every single gear.. and I often do.

Though after putting in $50 and getting like 7.5 gallons the other night.. you will now often find me doing 40 in 6th, in the right lane.

1500 rpm shifts baby!

You may be actually getting lower fuel economy doing that. At 40 mph I think 5th gear is probably best, maybe even 4th.

UNKNOWN_370 · 04-11-2012, 06:37 AM

Quote:

Originally Posted by ShockWave

I read that driving your 370z carefully can actually cause more harm to an engine than occasionally red-lining it and driving it like it was made to be driven. High engine RPM's equals high combustion temperatures which helps burn off the carbon that builds up on the cylinder head and valves, which can otherwise lead to worse fuel economy, power loss, and worse... Is this true?

Sounds legit but there is always a countereaction to the positive. Driving it like you stole it also wears parts down a whole lot faster. I have mixed driving habits. Some days I do 60 in tthe slow lane and others I'm andretti'in it up. The Z needs to breath but it needs its time to chill too.

canes7 · 04-11-2012, 08:10 AM

Quote:

Originally Posted by mhcoss

You may be actually getting lower fuel economy doing that. At 40 mph I think 5th gear is probably best, maybe even 4th.

It's called volumetric efficiency.

bvl · 04-11-2012, 08:12 AM

'Italian Tune Ups' made more sense back in they day of higher emissions and fuel that had far less additives (not to mention carbs or early fuel injection which isn't nearly as precise as todays computers can deliver)

Tear apart a modern head that uses good detergent fuel and regular oil changes and the combustion chambers should be sparkly quite honestly.

If you need to believe that in order to drive your car like a sports car: go right ahead

The vast majority of the RPMs of a street car for the life of the engine are < 3500 RPM. The only thing to keep in mind from a mechanical empathy point of view is to keep the high load conditions to a minimum while the engine is not warmed up. THAT is bad for your engine. IIRC peak cylinder pressure occur at torque peak, not RPM max (piston speeds are highest there).

7xxx shifts on a warmed up when rolling through that on ramp to the expressway is just a good time to be had. I recommend it daily.

For maximum fuel economy, you want WOT (to minimize pumping losses at throttle) and short shifting. Think Diesel style of shifting. Its kind of boring on the Z...I don't recommend it daily.

- b

Pauly · 04-11-2012, 08:18 AM

^^plus 1

gy954 · 04-11-2012, 04:23 PM

It used to be that carbon would build up in the cylinders over time, and running at high revs for a while would indeed improve the situation. With today's electronics controlling mixture and ignition retardation, there better not be any carbon build up, or something is very wrong.

kenchan · 04-11-2012, 04:25 PM

i see the shift up thingie flash several times during my weekend drives.

osbornsm · 04-11-2012, 06:08 PM

Quote:

Originally Posted by kenchan

i see the shift up thingie flash several times during my weekend drives.

Ahh... but what is it set to? 7k??

ZMan8 · 04-11-2012, 06:14 PM

Quote:

Originally Posted by osbornsm

Ahh... but what is it set to? 7k??

Can't you manually set it to what you like?

04-10-2012, 10:43 PM	#1 (permalink)
ShockWave Enthusiast Member Join Date: Dec 2011 Location: houston Posts: 303 Drives: 350z Rep Power: 14	occasionally red-lining? I read that driving your 370z carefully can actually cause more harm to an engine than occasionally red-lining it and driving it like it was made to be driven. High engine RPM's equals high combustion temperatures which helps burn off the carbon that builds up on the cylinder head and valves, which can otherwise lead to worse fuel economy, power loss, and worse... Is this true?

04-10-2012, 10:46 PM	#2 (permalink)
Thechidz A True Z Fanatic Join Date: Sep 2011 Location: NY Posts: 1,009 Drives: Nissan 370z Monti Bl Rep Power: 16	I hope so __________________ I <3 my car

04-11-2012, 01:50 AM	#6 (permalink)
Snakes709 A True Z Fanatic Join Date: Aug 2009 Location: Edmonton Posts: 1,205 Drives: 2011 Evo-X GSR Rep Power: 18	I rev my EvoX to 7500-7900 3 times a day in 3rd...only because im tuning..lol. __________________ 2011 Evo-GSR AMS 2.4 stroker/ bore, FP Black build in progress. Sponsor: DSG Performance

04-11-2012, 08:18 AM	#11 (permalink)
Pauly Track Member Join Date: Feb 2012 Location: Lafayette, La Posts: 645 Drives: and parks Rep Power: 14	^^plus 1 __________________ Gun Metallic 2012 370 Z 7AT

04-11-2012, 04:23 PM	#12 (permalink)
gy954 Base Member Join Date: Mar 2012 Location: Sonoma County, CA Posts: 163 Drives: 2011 370Z Rep Power: 181	Not Now It used to be that carbon would build up in the cylinders over time, and running at high revs for a while would indeed improve the situation. With today's electronics controlling mixture and ignition retardation, there better not be any carbon build up, or something is very wrong.

04-11-2012, 01:12 AM	#5 (permalink)
ShinyBlueZ Enthusiast Member Join Date: Apr 2012 Location: In My Z Posts: 462 Drives: Shiniest Bluest Z Rep Power: 13	I prefer to red-line every single gear.. and I often do. Though after putting in $50 and getting like 7.5 gallons the other night.. you will now often find me doing 40 in 6th, in the right lane. 1500 rpm shifts baby!

04-11-2012, 08:12 AM	#10 (permalink)
bvl Enthusiast Member Join Date: May 2011 Location: PA Posts: 362 Drives: MB Roadster (sold) Rep Power: 14	'Italian Tune Ups' made more sense back in they day of higher emissions and fuel that had far less additives (not to mention carbs or early fuel injection which isn't nearly as precise as todays computers can deliver) Tear apart a modern head that uses good detergent fuel and regular oil changes and the combustion chambers should be sparkly quite honestly. If you need to believe that in order to drive your car like a sports car: go right ahead The vast majority of the RPMs of a street car for the life of the engine are < 3500 RPM. The only thing to keep in mind from a mechanical empathy point of view is to keep the high load conditions to a minimum while the engine is not warmed up. THAT is bad for your engine. IIRC peak cylinder pressure occur at torque peak, not RPM max (piston speeds are highest there). 7xxx shifts on a warmed up when rolling through that on ramp to the expressway is just a good time to be had. I recommend it daily. For maximum fuel economy, you want WOT (to minimize pumping losses at throttle) and short shifting. Think Diesel style of shifting. Its kind of boring on the Z...I don't recommend it daily. - b

04-11-2012, 04:25 PM	#13 (permalink)
kenchan A True Z Fanatic Join Date: Aug 2009 Location: N/A Posts: 76,801 Drives: N/A Rep Power: 141521	i see the shift up thingie flash several times during my weekend drives.

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