How fast is too fast for 88ci
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Road Captain
Joined: May 2012
Posts: 603
Likes: 8
From: Ct
How fast is too fast for 88ci
So I was coming home lastnight at a good clip 90ish, so my question is how fast is to fast for cruising on the highway, I was running 3500+ rpms.
Just curious. Stock 88 with stage 1.
Just curious. Stock 88 with stage 1.
Outstanding HDF Member
Joined: Mar 2009
Posts: 2,216
Likes: 102
From: Central Illinois
If we discount the posted speed limits, citations, fines and possible arrests, there is little to hold you back from running 90+ all day or all week. That engine can handle it with little to no problem. The twin cam is not the Evo or earlier H-D engines. The twin cam can handle long high speed runs.
Grand HDF Member
Joined: Mar 2007
Posts: 4,928
Likes: 285
From: Edmond Oklahoma
3500 doesn't hurt the engine if it isn't lugging to hold that speed and isn't getting to hot. Heat would be the only thing I could as a problem. I ran my 02 RKC btween 80-85 for several hours and it seem fine. Almost seem to like it.
Beary
Beary
Outstanding HDF Member
Joined: Mar 2009
Posts: 2,216
Likes: 102
From: Central Illinois
I believe the real proof is, of the (possibly) millions of twin cams out there, how much are you hearing about widespread major engine problems with them? Not too much. If you go into any Harley dealer or bike shop about the only time you see a twin cam torn down is because they are upgrading it, seldom for major repairs. Back when I was a kid in the 70's it was perfectly normal for guys to have shovels or pan engines torn down in their garage doing major work on them just to keep them running, it was almost a requirement or the bottom end would blow right out of the cases. Not so with the twin cam. Yes, they do have some problems like the out of alignment flywheels, but those are more of a rarity and usually due to abuse.
Last edited by Guntoter; Aug 15, 2013 at 10:37 AM.
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Extreme HDF Member
Joined: Sep 2010
Posts: 14,744
Likes: 402
From: Phoenix '53, '88, '09 Big Twins
kidding?
my panheads run 80, my evo 80" bagger 120, my 80" fxr 135.
the 88" drivetrain will do it and the limiting factor will be wind resistance, not running out of revs.
BUT the batwing fairing lifts and relieves traction at wind speeds above 85ish- tread carefully...a cross wind of gust can send the bike skittering
maybe someone is trying to justify a newer, bigger motor....
mike
my panheads run 80, my evo 80" bagger 120, my 80" fxr 135.
the 88" drivetrain will do it and the limiting factor will be wind resistance, not running out of revs.
BUT the batwing fairing lifts and relieves traction at wind speeds above 85ish- tread carefully...a cross wind of gust can send the bike skittering
maybe someone is trying to justify a newer, bigger motor....
mike
Last edited by mkguitar; Aug 15, 2013 at 10:55 AM.
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Cruiser
Joined: Aug 2009
Posts: 212
Likes: 9
From: Folsom, CA
Ditto.
Road Captain
Joined: Apr 2011
Posts: 538
Likes: 24
From: Texas
My primary seals leaked when i ran that hard very long on my old bike. I always thought it sounded like it was screaming and hated to run it hard but was told the same thing. I would check your cam change tensioners every 20k or so miles