OBSERVATION
Road Warrior
Joined: Feb 2005
Posts: 1,296
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From:
RE: OBSERVATION
I have a couple theories - thinner air makes the cooling system less efficient while the motor is working harder to produce the same horsepower (lower air pressure - we compensate by opening the throttle more to produce the same amout of power). Speed limit may also be reduced, again, affecting the efficiency of the cooling system (air/oil). I doubt if either is correct, but, couldn't resist a shot 
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Ultimate HDF Member
Joined: Feb 2006
Posts: 5,939
Likes: 3
From: TX
RE: OBSERVATION
My initial guess is that you were simply working the motor a little harder than you would around here ~ climbing mountains, etc....
How hot was "hot"?
Also... how did it run on the trip? Did you ever find yourself wishing for a larger TB? [8D]
How hot was "hot"?
Also... how did it run on the trip? Did you ever find yourself wishing for a larger TB? [8D]
Thread Starter
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Banned
Joined: Mar 2006
Posts: 8,603
Likes: 10
RE: OBSERVATION
welp...i think retired ted is onto something...as for how it ran...like a scalded *** ape....it did however pop lots at higher elevation when i was going down an incline....it seemed to "hunt" for idle tune lots and at one point would not idle AT ALL...but that cleared up....one of the men on the ride had a RK with a 120" Jims and i pulled him with my little TB...he thought he had a hot motor, maybe it just needed a tuneup or somethin
my SONY VAIO burnt up so's my time here for acoupla weeks will be limited
my SONY VAIO burnt up so's my time here for acoupla weeks will be limited
Road Warrior
Joined: Feb 2005
Posts: 1,296
Likes: 1
From:
RE: OBSERVATION
Hey Bryan - did you by chance stop and restart your engine when you were at maximum altitude? Just a hunch - I think our engines only calibrate during the short time the engine lamp is on before we start - just curious.
Ultimate HDF Member
Joined: Feb 2007
Posts: 7,663
Likes: 7
From: Northeast Ohio
RE: OBSERVATION
Byan,
Experienced the "would not idle at all" myself yesterday in 80+ temps and high humidity, once the oil temp got above 240. Sat in a long line of traffic barely moving for a half an hour. Bike got real hot. I am wondering if the DTT is sensing the heat and somehow trying to compensate? It almost felt like it had vapor lock, as had to feather the throttle to accelerate, had to keep the throttle rolled open at stops, and pinged like a mother for a few miles, then started to get better and about 15 min. later was perfect.
Any thoughts?
Experienced the "would not idle at all" myself yesterday in 80+ temps and high humidity, once the oil temp got above 240. Sat in a long line of traffic barely moving for a half an hour. Bike got real hot. I am wondering if the DTT is sensing the heat and somehow trying to compensate? It almost felt like it had vapor lock, as had to feather the throttle to accelerate, had to keep the throttle rolled open at stops, and pinged like a mother for a few miles, then started to get better and about 15 min. later was perfect.
Any thoughts?
Extreme HDF Member
Joined: Apr 2006
Posts: 10,449
Likes: 46
From: Roswell, GA
RE: OBSERVATION
Does the DTT replacement ECM have the same heat management programming that the HD ECM has?
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Ultimate HDF Member
Joined: Feb 2006
Posts: 5,939
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From: TX
RE: OBSERVATION
ORIGINAL: Harleypingman
Does the DTT replacement ECM have the same heat management programming that the HD ECM has?
Does the DTT replacement ECM have the same heat management programming that the HD ECM has?
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Ultimate HDF Member
Joined: Feb 2007
Posts: 7,663
Likes: 7
From: Northeast Ohio
RE: OBSERVATION
I have posted this problem in another forum also to get maximum exposure and haven't gotten a response other than it overheated. I still think the DTT was trying to compensate for the heat and started to lean everything out and after getting moving again, then relearned and everything settled down. Possibly we may need to enter a zero or one in the BLM tables in the idle range to keep anything from changing once it is where it belongs. I am going to call Daytona tomorrow and see what they have to say.
I do know the bike was really hot, since building the engine heat has not been an issue, but idling this long the back of my thinghs were cooking, so between the oil temp gauge and my skin thermometer, the engine temp was very high.
I do know the bike was really hot, since building the engine heat has not been an issue, but idling this long the back of my thinghs were cooking, so between the oil temp gauge and my skin thermometer, the engine temp was very high.