rev limiter
Ultimate HDF Member
Joined: Jul 2006
Posts: 6,478
Likes: 12
From: Nashville, TN
RE: rev limiter
It's part of the ignition system. It keeps you from running the engine over what would be the "red line". When you hit that level of RPM, the ignition cuts out, I think on one cyclinder. I'mnot totally sure about the electronic workings of the system, but it makes the bike spit and stutter. I'm not sure what year they started the rev limiter, but it is on most models. I know my buddy has a 2002 883 custom, and it has a rev limiter.
RE: rev limiter
It is actually called an Ignition module.You can replace it with a Sceamin Eagle module like I did.I bought a 7500 rpm module off of ebay.It lets you wind out the gears alot more. http://www.harley-davidson.com/gma/g...bmLocale=en_US
Club Member
Joined: Feb 2007
Posts: 16,320
Likes: 306
From: Boynton Beach, FloriDuh
RE: rev limiter
The stock ignition control module (ICM) controls your "spark". It's primary function is to control ignition timing & advance. In addition, the ICM contains a rev limiter (6200 rpm) to prevent accidental red-lining (over reving) of the engine. Stock engines can be run to 7000 RPM but continiously doing so will have long term wear & tear effects on the motor.
Under no circumstances would it be wise to run your Sporty motor over 7000 RPM unless you have upgraded the valve train assembly. This means different valve springs, lifters, pushrods, etc.
Under no circumstances would it be wise to run your Sporty motor over 7000 RPM unless you have upgraded the valve train assembly. This means different valve springs, lifters, pushrods, etc.
Tourer
Joined: Mar 2007
Posts: 368
Likes: 2
From: Salina, KS
RE: rev limiter
ORIGINAL: cHarley
The stock ignition control module (ICM) controls your "spark". It's primary function is to control ignition timing & advance. In addition, the ICM contains a rev limiter (6200 rpm) to prevent accidental red-lining (over reving) of the engine. Stock engines can be run to 7000 RPM but continiously doing so will have long term wear & tear effects on the motor.
Under no circumstances would it be wise to run your Sporty motor over 7000 RPM unless you have upgraded the valve train assembly. This means different valve springs, lifters, pushrods, etc.
The stock ignition control module (ICM) controls your "spark". It's primary function is to control ignition timing & advance. In addition, the ICM contains a rev limiter (6200 rpm) to prevent accidental red-lining (over reving) of the engine. Stock engines can be run to 7000 RPM but continiously doing so will have long term wear & tear effects on the motor.
Under no circumstances would it be wise to run your Sporty motor over 7000 RPM unless you have upgraded the valve train assembly. This means different valve springs, lifters, pushrods, etc.
For the 2004 to 2006 1200's, the limit can be increased relatively safely to about 7,000 without damageing the engine, because the stock heads have a stronger valve train than previous models. (Not that I am recommending that). I have mine set to 6,200, but usually don't get there.
Even with upgrading the valve train, I would suspect that running over 7,000 regularly will shorten the life of the engine.
Outstanding HDF Member
Joined: May 2007
Posts: 2,154
Likes: 5
From: Phoenix, AZ
RE: rev limiter
ORIGINAL: cHarley
The stock ignition control module (ICM) controls your "spark". It's primary function is to control ignition timing & advance. In addition, the ICM contains a rev limiter (6200 rpm) to prevent accidental red-lining (over reving) of the engine. Stock engines can be run to 7000 RPM but continiously doing so will have long term wear & tear effects on the motor.
Under no circumstances would it be wise to run your Sporty motor over 7000 RPM unless you have upgraded the valve train assembly. This means different valve springs, lifters, pushrods, etc.
The stock ignition control module (ICM) controls your "spark". It's primary function is to control ignition timing & advance. In addition, the ICM contains a rev limiter (6200 rpm) to prevent accidental red-lining (over reving) of the engine. Stock engines can be run to 7000 RPM but continiously doing so will have long term wear & tear effects on the motor.
Under no circumstances would it be wise to run your Sporty motor over 7000 RPM unless you have upgraded the valve train assembly. This means different valve springs, lifters, pushrods, etc.
RE: rev limiter
I put the 7500rpm Screamin Eagle module on my ride.I have yet to hit the limit.About the only time I get close is getting on the highway.But I've hit 100mph on the highway and there is plenty more rpm's to go
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Extreme HDF Member
Joined: Sep 2006
Posts: 10,033
Likes: 29
RE: rev limiter
Rev limters have been around since the beginning of the EVO.
My old Iron's only rev limiter is on the end of your right arm. Heck, it doesn't even have a "red line" on the tach.
[IMG]local://upfiles/17633/866B01F12DCE4AB09A92324E806D00ED.jpg[/IMG]
My old Iron's only rev limiter is on the end of your right arm. Heck, it doesn't even have a "red line" on the tach.
[IMG]local://upfiles/17633/866B01F12DCE4AB09A92324E806D00ED.jpg[/IMG]
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