Rev limiter?

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Jun 30, 2021 | 08:29 AM

#11

roussfam

Seasoned HDF Member

Joined: Jan 2009

Posts: 12,656

Likes: 8,261

From: Ottawa, Ontario

Quote:

Originally Posted by Max Headflow

You got some putz resurrecting and old thread instead of creating a new one..

I responded to a 6 day old post in a 7 year old thread, hence my comment about the rev limit may not have been exceeded but the time limit was, it was meant as humour,

. I think maybe you should read the thread BEFORE you post in the thread.

Last edited by roussfam; Jun 30, 2021 at 08:32 AM.

Jun 30, 2021 | 08:52 AM

#12

Max Headflow

Seasoned HDF Member

Joined: Dec 2005

Posts: 19,830

Likes: 7,968

From: poway

Quote:

Originally Posted by roussfam

I responded to a 6 day old post in a 7 year old thread, hence my comment about the rev limit may not have been exceeded but the time limit was, it was meant as humour,

. I think maybe you should read the thread BEFORE you post in the thread.

Yeah, I got the humor part.

Jun 30, 2021 | 10:19 AM

#13

roussfam

Seasoned HDF Member

Joined: Jan 2009

Posts: 12,656

Likes: 8,261

From: Ottawa, Ontario

Quote:

Originally Posted by Max Headflow

Yeah, I got the humor part.

I have to admit I have been guilty of not realizing the date and bringing threads back from the dead before though. Just reread my reply and it probably came across as a little harsh, my apologies.

Ride safe, Jim

Jun 30, 2021 | 11:26 AM

#14

60Gunner

Grand HDF Member

Joined: Sep 2017

Posts: 4,359

Likes: 1,219

From: Dubuque, IA

Quote:

Originally Posted by WildBill2566

That's what you hit right enough.

I'd try to avoid doing it too often, in fact I lowered my rev limiter by 500 rpm.

As engine rpm increases, stress increase on the engine is not linear, and anyway the power is done before the rev limit, so time to change up.

That might be true in YOUR case with stock cams but there's plenty of cams making power well north of 6000rpm.
As far as wear, lugging them is far more detrimental. I'll run to 6000rpm regularly but seldom go below 2500.

Jul 1, 2021 | 06:44 AM

#15

bustert

Seasoned HDF Member

Joined: Aug 2008

Posts: 5,048

Likes: 990

nothing wrong about digging up old bones.
mine doesn't really start to pull till after the 4k mark
i am running 70 mph at 3k, so well at 6k, i am running way past the stability factor of the stock frame, feel every rock in the road. gotta love it!

Jul 1, 2021 | 07:17 AM

#16

Jackie Paper

Seasoned HDF Member

Joined: Mar 2010

Posts: 38,300

Likes: 6,325

From: Honah Lee

People say it does not hurt it but a steady dose of it on a daily basis and the metal parts will not outlast the seals.

And another old old post. It lasted 2 years flogging it!!!!? .

Last edited by Jackie Paper; Jul 1, 2021 at 07:22 AM.

Jul 2, 2021 | 05:13 AM

#17

bustert

Seasoned HDF Member

Joined: Aug 2008

Posts: 5,048

Likes: 990

hummmmm?????
1974ch would run 133mph@7.5k
@ 175k miles tore down to restore frame, bird in hand, up the ponies with 10:1 piston, y cams and s&s flywheels.
a .010 over bore to remove .006 taper and the rest of the machine showed little wear, could not tell since the original measurement were not available as hd says if it fits, ship. it now has nearly 200k miles and was never shown mercy even doing stupid stuff like figure 8's alcohol infused and carried the scrar for years.
bought brand new in aug 74 and totaled it out jan 75 taking the front end off a 72 impala, no plastic bumpers here. threw it on a steel table and welded in stops and straighten the frame with hydraulics, heat and the fsm spec's.
used to do 2k runs and normal cruising speed was @ 4k = 80 mph.
so hd is pretty rugged. i did maintain with an over kill but the machine ran 30 > 60 wt oil but mostly series 3 diesel engine oil made for industrial engines like EMD for one.