Heat Mangement
#1
Join Date: Jul 2007
Location: South of Dallas Area, Texas
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Heat Mangement
05 Fatty, PCIII, slip ons and K&N AC.
Caught in a wicked jam on I80 last weekend. I was watching the oil temp, it hit about 250. Idling for a LOOONG time. 3 or 4 miles. I heard it start to miss and I am sure it went into Parade mode and cut out the rear cylinder. I pulled onto the shoulder and went for about 2 miles to cool it off. Does anyone know how long it can idle (relatively safely) in limp mode?
MikeM
Caught in a wicked jam on I80 last weekend. I was watching the oil temp, it hit about 250. Idling for a LOOONG time. 3 or 4 miles. I heard it start to miss and I am sure it went into Parade mode and cut out the rear cylinder. I pulled onto the shoulder and went for about 2 miles to cool it off. Does anyone know how long it can idle (relatively safely) in limp mode?
MikeM
#2
#3
#4
250 degrees is not to hot. The engine may have gone into heat protection mode by dropping some cycles as it uses a temperature sensor in the head.
With a PCIII USB you can split the MAP and then richen the rear cylinder in the Traffic speed area of the MAP. I did this and my thighs do not seem to get as hot in traffic.
With a PCIII USB you can split the MAP and then richen the rear cylinder in the Traffic speed area of the MAP. I did this and my thighs do not seem to get as hot in traffic.
#5
#6
Operating range is 230-325. "Parade mode" is different from heat management; this is set at dealer's for like the Shriner's or people who spend a lot of time idling in traffic, if requested. At about 325 & above, the HM doesn't shoot gas into the rear injector to reduce the heat while the parade mode shuts down rear cylinder ignition. When this happens, you shouldn't over compensate by wringing the throttle, just cruise and let it cool back down. Buell uses the ignition method for HM and I think HD should go to this way since the gas would cool the engine.
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