Is it good to red line?
Thread Starter
Full Member
Joined: Nov 2002
Posts: 58
Likes: 0
From: Aurora, IL
Is it good to red line?
Hello all,
I have a simple question here. I have been reading though the archives and pretty much learning all the answers to my questions, when I came across a post about a month ago about some guy who was asking about his bad gas mileage and such. Anyway in that post a few people said it was good for the rotary engine to be red lined once and a while. I wanted to know how that could help since it seems to me that is just putting extra stress on the engine? My 88 SE currently has 117k on the oringinal engine and runs good. I just wanted to know if there is any truth to this?
~Thanks
I have a simple question here. I have been reading though the archives and pretty much learning all the answers to my questions, when I came across a post about a month ago about some guy who was asking about his bad gas mileage and such. Anyway in that post a few people said it was good for the rotary engine to be red lined once and a while. I wanted to know how that could help since it seems to me that is just putting extra stress on the engine? My 88 SE currently has 117k on the oringinal engine and runs good. I just wanted to know if there is any truth to this?
~Thanks
...
Joined: Mar 2001
Posts: 171
Likes: 0
From: Twin Cities, MN
Use the search button on the upper right hand corner. ..... many many posts on this.
Redlining (or coming close) gets the rotors spinnign at 7000/3 RPMs internally and helps break the carbon free. Excess carbon WILL kill a rotary engine and it's GOOD to clear it out every now and then (once a day when the engine is NICE AND WARM for me
) to clear it out.
A common problem is babied engines that are bought by a young'n and then they blow cuz tehy were run hard after an lifetime of EASY GOING. WHat happens? the carbon breaks free and jams the seals and .. well you can guess.
So, YES it's good in moderation. Just dont hold the RPMs up there more than a split second and ALWAYS do it when it's warmed up.
Redlining (or coming close) gets the rotors spinnign at 7000/3 RPMs internally and helps break the carbon free. Excess carbon WILL kill a rotary engine and it's GOOD to clear it out every now and then (once a day when the engine is NICE AND WARM for me
) to clear it out. A common problem is babied engines that are bought by a young'n and then they blow cuz tehy were run hard after an lifetime of EASY GOING. WHat happens? the carbon breaks free and jams the seals and .. well you can guess.
So, YES it's good in moderation. Just dont hold the RPMs up there more than a split second and ALWAYS do it when it's warmed up.
Rotor Head
Joined: Jan 2002
Posts: 1,966
Likes: 0
From: British Columbia
yo- there is some good behind redlining. If you dont highway drive often. The Pro's about redlining is that it gets carbon deposites a chance to break loose. Do it every so often, not everystop light. Highway driving seems to have the same effect. But redlining is more fun! 
peace
peace
Trending Topics
What R U thinking self?
Joined: Mar 2002
Posts: 2,333
Likes: 0
From: Stockton, CA
Redline that hooker... as if a buddy is paying for you.
My N/A has 203K miles on it .. i still redline her, ride her hard and put her away dry.
I can't wait to redline my TII ... couple hundred more miles of break-In and it will be ON!!
My N/A has 203K miles on it .. i still redline her, ride her hard and put her away dry.
I can't wait to redline my TII ... couple hundred more miles of break-In and it will be ON!!
Joined: Aug 2001
Posts: 1,271
Likes: 0
From: Atlanta.Georgia
hell yea redline the **** outta it. cleans out the carbon on motors with high miles. i just got my motor broken in thanks (to kevins rebuild) and i can just now redline it. o so how much i love it
No longer cares
Joined: Apr 2002
Posts: 1,345
Likes: 0
From: just a bit north of your business
Getting it up in the revs burns the carbon out. It doesn't blow it out or loosen it up. Lots of carbon builds up in rotaries because of the oil injection used to lubricate the innards of the motor. Gotta get that sucker pumping some fuel through her to burn the sludge off the surfaces of the combustion chambers.
7000rpms still only equates to a rotating speed of 3500rpms on the rotors. They spin at half the speed of the eccentric shaft. You need to wind it out to get the surface temps hot enough to burn that stuff off.
Redlining a piston engine results in inertial masses working in opposite directions of the crank. Pistons going one way and the crank pulling the other. The con rods are only so strong, so sooner or later they'll let go and the motor is junk. High revs increase the forces on the rotating assembly causing thier failure to be more emminant. It'll cost you an additional 3 grand to build a 350 that'll wind to 9K and we can do it on stock internals all day long.
Rotaries have no opposing parts internally so they rev higher with less stress on the mechanical assembly. Objects in motion stay in motion and the rotors spin freely in their respective orbits very nicely. Phelix was one hell of a smart cookie to perfect the design to the point of production.
7000rpms still only equates to a rotating speed of 3500rpms on the rotors. They spin at half the speed of the eccentric shaft. You need to wind it out to get the surface temps hot enough to burn that stuff off.
Redlining a piston engine results in inertial masses working in opposite directions of the crank. Pistons going one way and the crank pulling the other. The con rods are only so strong, so sooner or later they'll let go and the motor is junk. High revs increase the forces on the rotating assembly causing thier failure to be more emminant. It'll cost you an additional 3 grand to build a 350 that'll wind to 9K and we can do it on stock internals all day long.
Rotaries have no opposing parts internally so they rev higher with less stress on the mechanical assembly. Objects in motion stay in motion and the rotors spin freely in their respective orbits very nicely. Phelix was one hell of a smart cookie to perfect the design to the point of production.
I'm a boost creep...
Joined: Jan 2002
Posts: 15,608
Likes: 8
From: Auckland, New Zealand
Originally posted by Jimmy325i
7000rpms still only equates to a rotating speed of 3500rpms on the rotors. They spin at half the speed of the eccentric shaft.
7000rpms still only equates to a rotating speed of 3500rpms on the rotors. They spin at half the speed of the eccentric shaft.
s4 for life
Joined: May 2002
Posts: 2,516
Likes: 1
From: Oahu
Redline is good! Me redline often. Me beat the **** out of car.
150,000 miles and runs my car still runs flawless. I drive it like a friggen racecar. I probably average 5 redlines every time I drive. I have a 88 convertable.
150,000 miles and runs my car still runs flawless. I drive it like a friggen racecar. I probably average 5 redlines every time I drive. I have a 88 convertable.
