Warm up with FI models?
HDF Community Team
Joined: Aug 2019
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From: Santa Ana, CA
Last edited by OCSpringer; May 18, 2023 at 04:17 PM.
Seasoned HDF Member
Joined: Mar 2010
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From: Honah Lee
I have a 48 ****** jeep that is also a leaky bastard as well. Once I am done with the bike the jeep is next. I have all the parts in the garage waiting to go on but have been slow to get on with it. It runs pretty good now with 75 year old original parts. The rigid mount sportster reminds me of the jeep. It feels a little clucky and tractor-like at times. The springer adds to that I think.
Problem with the really old stuff like my 46 is unless you get all the bearings right, it's designed so loose, seal only work so well.
When I did the in frame on the 93 Jeep, I put new synthesizer and a couple bearings in the 5 speed. Also put a 95 bell housing on it that has the external slave cylinder.
I resealed the transfer. Noticed later that my only leak was ATF from the tail shaft of the transfer. Figured it was the small bearings in that tail shaft nose cone. So I got one. Still leaks a little and the shaft is not ringed.
Another pan .
Grand HDF Member
Joined: May 2006
Posts: 3,636
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From: Ohio
I always let my EFI bikes run 30-60 seconds when cold before going
that includes the Sportster. There are no problems with this approach and no detrimental affects on gaskets ot anything else. I still baby them for a few miles.
As far as EFI not having the soul of a carb I cant argue with that sentiment. Carbd Harleys are beautifully simple and go along with the simple air cooled engines. Having said that, I dont agree with guys who idle them down to 800 rpms just to get that lopey sound. I could easily adjust my idle down on my EFI bikes but I dont because I dont want the oil pressure dropping. This is especially true on Twin Cams .the idle needs to be in spec for oil pressure.
As far as the oil tank and battery cover, I am in the other camp that prefers the newer side covers over the old. I prefer the symmetry of both looking the same and I just think the shape is more aesthetically pleasing. These are metal too I know some folks think they are plastic.
Anyway, you should test ride a rubber mounted EFI bike before deciding. You may prefer the rigid feel or not. I really like the feel of my 2016 shakes at idle but smooth at speed. It is kind of like a smaller Dyna.
My single biggest concern with newer Sportsters, including mine, is whether or not I will be able to get sensors if I have a failure after it is older. Will the aftermarket be there to support it? As I mentioned in another thread, I am more thsn likely going to buy some spare parts for mine and my CVO Road King depending on price of course.
As far as EFI not having the soul of a carb I cant argue with that sentiment. Carbd Harleys are beautifully simple and go along with the simple air cooled engines. Having said that, I dont agree with guys who idle them down to 800 rpms just to get that lopey sound. I could easily adjust my idle down on my EFI bikes but I dont because I dont want the oil pressure dropping. This is especially true on Twin Cams .the idle needs to be in spec for oil pressure.
As far as the oil tank and battery cover, I am in the other camp that prefers the newer side covers over the old. I prefer the symmetry of both looking the same and I just think the shape is more aesthetically pleasing. These are metal too I know some folks think they are plastic.
Anyway, you should test ride a rubber mounted EFI bike before deciding. You may prefer the rigid feel or not. I really like the feel of my 2016 shakes at idle but smooth at speed. It is kind of like a smaller Dyna.
My single biggest concern with newer Sportsters, including mine, is whether or not I will be able to get sensors if I have a failure after it is older. Will the aftermarket be there to support it? As I mentioned in another thread, I am more thsn likely going to buy some spare parts for mine and my CVO Road King depending on price of course.
Last edited by stratplexi; May 18, 2023 at 05:02 PM.
HDF Community Team
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From: San Diego, CA
And I agree that keeping a healthy idle speed is the way to go.
John
Last edited by John Harper; May 18, 2023 at 05:29 PM.
Seasoned HDF Member
Joined: Mar 2010
Posts: 38,606
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From: Honah Lee
What exactly was he referring to that was asymmetric? The uneven idle from both connecting rods sharing the same bearing ?
Know my old 04 hunts 100 rpm at idle. Always done it.
Do the new M8s with all the fancy high speed computer processing going on fix that? Or do they hunt from the few degree off from 180 they fire at?
That 1000 rpm idle at least back in 04 was not for oil pressure at idle on a TC. It's to keep the oil injectors from working. And mostly to catch it dropping too low and stalling if you were to snap the throttle back too fast and cut off all the air.
Car did the same thing when the went from carburetors to FI. Drove people crazy back then thinking that startup RPM was going to hurt their motor.
Last edited by Jackie Paper; May 18, 2023 at 05:45 PM.
HDF Community Team
Joined: Dec 2011
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From: San Diego, CA
When you sit on a Sportster and look down, the pipes, carb/aircleaner and oil tank are on the right, the battery, cowbell horn, and clutch housing on the left. Even the motor sticks out on the left more than the right. Not like your typical inline 2 or inline 4.
John
Last edited by John Harper; May 18, 2023 at 06:02 PM.
Seasoned HDF Member
Joined: Mar 2010
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From: Honah Lee
Yep, sure did. What else would you call it? An Asian bike? I may be a liberal, but not exactly woke.
When you sit on a Sportster and look down, the pipes, carb/aircleaner and oil tank are on the right, the battery, cowbell horn, and clutch housing on the left. Even the motor sticks out on the left more than the right. Not like your typical inline 2 or inline 4.
John
When you sit on a Sportster and look down, the pipes, carb/aircleaner and oil tank are on the right, the battery, cowbell horn, and clutch housing on the left. Even the motor sticks out on the left more than the right. Not like your typical inline 2 or inline 4.
John
Read my lip. It's in my first sentence. Google Sport bike and see what comes up.
And I agree about a typical Harley is not very asymmetric. In your post, you went directly to exhaust after saying it and I wasn't sure. That's Potato potato
I haven't made any modifications for performance other then trim up that asymmetric look. Ditched the football on the right to a Willie Skull over a SE filter.
Ditched the odd Deuce exhaust an tried a open Python exhaust but that killed engine break and couldn't stand all that racket. An OEM takeoff from a 96 Night train bolts right on and hides the Deuce visible crossovers and kink in the lower exhaust tube.
OEM bags and taillight relocate helped the back A pare of SE longer shocks lower the rear slight accents the front steering head rake.
A thin quick detach shield off a 93 anniversary bike. A aluminum 21" aluminum rim on the front to somewhat match rear.
Extend controls to fit me along with a real leather Corbin saddle with a small hand size sissy pad for my helmet. It's two up but has SS D rings to attach my throw over Saddleman bag..
All my changes kept it Harley but was an attempt to fix the asymmetric look.
Road Warrior
Joined: May 2017
Posts: 1,966
Likes: 1,582
From: Scottish Highlands.
I let my Iron 883 warm up until the tick over drops to 1000 rpm and then we're both ready to ride.
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Tourer
Joined: Oct 2018
Posts: 265
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From: Westchester NY
How long does a fuel injected bike (or any vehicle) really need to warm up? Maybe 20 seconds to let oil properly soak into the upper half of the motor.
How long do I personally give it? About 10-15 minutes of soft driving, then allow myself to rip the throttle if it feels sufficiently warm after that. I like to let the metal & gaskets to properly expand, and the oil to be warm enough to have nice flow before getting to higher RPMs
How long do I personally give it? About 10-15 minutes of soft driving, then allow myself to rip the throttle if it feels sufficiently warm after that. I like to let the metal & gaskets to properly expand, and the oil to be warm enough to have nice flow before getting to higher RPMs
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