Reving a cold engine
Banned
Joined: May 2006
Posts: 914
Likes: 1
only thing I can think of ...if its sumped up it could blow out a gasket....or it could cold seize because the pistons will expand faster than the cylinders...lifters might not be pumped up so some hammering of the pushrods might happen....rollers dont require much oil to survive,but the plain cam bearings of a 07 and up could seize......generally not a good idea to rev em while cold
Road Warrior
Joined: Jun 2008
Posts: 1,282
Likes: 2
From: Yukon, OK
only thing I can think of ...if its sumped up it could blow out a gasket....or it could cold seize because the pistons will expand faster than the cylinders...lifters might not be pumped up so some hammering of the pushrods might happen....rollers dont require much oil to survive,but the plain cam bearings of a 07 and up could seize......generally not a good idea to rev em while cold
Extreme HDF Member
Joined: Sep 2005
Posts: 11,615
Likes: 50
From: Baton Rouge, LA
I agree with Crash. I don't rev mine or otherwise stress it 'til the oil temp reaches 150°, but that's just one of my many little obsessions. I feel that until heat is built-up into all components you should take it easy, as that way it would seem wear would be kept to a minimum.
Also, most wear an engine experiences is in the first few seconds after a cold start. IMO if you run an oil that adheres to the metal parts, like most synthetics do, and keep the revs and stress down at least in the first few minutes of operation you are extending the life of the engine.
Also, most wear an engine experiences is in the first few seconds after a cold start. IMO if you run an oil that adheres to the metal parts, like most synthetics do, and keep the revs and stress down at least in the first few minutes of operation you are extending the life of the engine.
Road Warrior
Joined: Jun 2008
Posts: 1,282
Likes: 2
From: Yukon, OK
I agree with Crash. I don't rev mine or otherwise stress it 'til the oil temp reaches 150°, but that's just one of my many little obsessions. I feel that until heat is built-up into all components you should take it easy, as that way it would seem wear would be kept to a minimum.
Also, most wear an engine experiences is in the first few seconds after a cold start. IMO if you run an oil that adheres to the metal parts, like most synthetics do, and keep the revs and stress down at least in the first few minutes of operation you are extending the life of the engine.
Also, most wear an engine experiences is in the first few seconds after a cold start. IMO if you run an oil that adheres to the metal parts, like most synthetics do, and keep the revs and stress down at least in the first few minutes of operation you are extending the life of the engine.
I start mine and it always runs about 2-5 min before i take off....i let it idle while i fill my bags....then i take off easy and ride.....
Extreme HDF Member
Joined: Sep 2005
Posts: 11,615
Likes: 50
From: Baton Rouge, LA
If the lawyers didn't have a hand in the making of owner's manuals they would be only half as big.
Road Warrior
Joined: Jun 2008
Posts: 1,282
Likes: 2
From: Yukon, OK
Among the hundreds of dire warnings in my owner's manual, under "Starting the Engine" it says "The engine should be allowed to run slowly for 15-30 seconds. This will allow the engine to warm up and let oil reach all surfaces needing lubrication. Failure to comply can result in engine damage. Do not roll the throttle before starting."
If the lawyers didn't have a hand in the making of owner's manuals they would be only half as big.
If the lawyers didn't have a hand in the making of owner's manuals they would be only half as big.
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Banned
Joined: Jun 2009
Posts: 58
Likes: 0
From: Roopville,Ga. 30170
silicone oil
I believe in a light throttle & 100 % silicone oil for all engine rpm & temperatures . Crude oil boils @ -200 deg. ,silicone boils @ +400 deg. which means no bubbles & the best lubercation made , but cold engine parts & high rpm"s will kill all engines in time ! just my thoughts. Duane # 617849 08 ultra
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