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Ironhead Sportster Motorcycle Talk (1957-1985) For all those that wanna talk about Ironhead Sportster Motorcycles

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  #1  
Old 23rd September 2010
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Default A few annoying little things

1. handling weird at low speeds. When i first got bike felt like I was going to tip over; rocking side to side. swapped in correct year, lower tree and bearings. went away mostly; but still present a little and getting more annoying. fork oil is new too btw. how do you check swingarm bearings what else could this be; screwed up forks? it's like i don't really go in a straight line.

2. carb fart. I make rich and bike seems to want to die at idle. lean and when i crack it open -- it lets out a little fart. could it be cold? carb and air filter could be moved around before i tightened it up a lot but is is normal to have to keep tightening your manifold boots?

or could it be timing, pushrods, points gap? Had a stealer do it months ago since i didn't have a time light; i bet they just static timed it and necer did the pushrods and the shit is off
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  #2  
Old 23rd September 2010
phideux phideux is offline
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1) Are your tires/wheels true and balanced????? Could be a busted belt or a warp in a tire too.

2) You shouldn't have to keep tightening up your manifold boots, your carb and air cleaner shouldn't move. Possible air leak in carb/manifold???
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  #3  
Old 23rd September 2010
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suttoncomfort suttoncomfort is offline
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what carb are you running? what air cleaner? is there a support bracket on the back of your air cleaner
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  #4  
Old 23rd September 2010
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Quote:
Originally Posted by phideux View Post
1) Are your tires/wheels true and balanced????? Could be a busted belt or a warp in a tire too.

2) You shouldn't have to keep tightening up your manifold boots, your carb and air cleaner shouldn't move. Possible air leak in carb/manifold???
Actually it probably is tires/wheels. I know cheap PO did everything cheap and wrong; only thing I haven't had to re-do is "new" tires.
I bet he just found some used ones and popped em in with a screwdriver.

I have to take it to shop since i have no such machine? I guess i can just ride it like that till i need another tire?

Carb and air house is an S and S. no bracket. will check again for leaks. I doubt it though. I bet it's carb/timing/pushrods/points.

stealer looked like he static times it, and slopped the shit back together in the parking lot with a new condens. when i brought it back; along with dicking around with everything else in the process. How the freak do you work on points anyway? (sticky is tough to understand). I'm assuming the book tells you how. I'll have to take a look at it.
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  #5  
Old 23rd September 2010
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Ivan RoachCoach Ivan RoachCoach is offline
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Default You ABSOLUTELY need a carb/air cleaner support bracket. Haven't...

...you ever noticed how heavy the carb and air cleaner are?
Now imagine all of that weight, under the stress and movement of road-riding, being supported solely by the two intake clamps.
That's why you're getting intake leaks.

And get your tires changed before one blows out, peeling away from the rim and dusting your cheap ass.
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Old 23rd September 2010
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where are you supposed to put the bracket. and that thing just passed inspection earlier this summer. although the front at least looks to be cracking on the sidewalls . . .
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Old 23rd September 2010
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Ivan RoachCoach Ivan RoachCoach is offline
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Default There's the type that runs from the back of the air cleaner...

...to a lifter block bolt, and the type that goes between the case center bolt and the lower carb bolt on the manifold.

I absolutely HATE intake leaks, so I run BOTH.
My riding style is also very aggressive, so I need to know the carb-to-manifold seal is going to remain intact.

Cracks along the sidewalls, dry-rot from sitting around too long, are a sign that it's time to replace those tires.
Your life is NOT what you want to gamble with, especially not when it's based on the veracity a goverment employee's inspection.



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  #8  
Old 23rd September 2010
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S and S makes it?

Also not a gov worker but an Indy doing a state inspection. Though didn't notice any cracks at that time; maybe they're recent. Might as well bring it back and get tire (mounted and balanced) bracket and risers assuming they're made by S & S? Any diy I can save on?
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  #9  
Old 23rd September 2010
GA_Ironhead GA_Ironhead is offline
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Like IRC said, the support is mandatory. I run mine from the A/C backing plate to a stud on the lifter block. The support is a $3.00 solution to a (potentially) $1000 problem.

As for the swingarm bearings, if they're shot, you'll be able to wiggle the swingarm back-and-forth. They're supposed to be periodically greased, but it's one of those things that typically gets neglected by owners. I replaced mine with Timkens from Fog Hollow for <$35.00, plus the shields and spacers. If they haven't been done, they probably need to be.
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  #10  
Old 23rd September 2010
GA_Ironhead GA_Ironhead is offline
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Quote:
S and S makes it?
What is "it"? The bracket?
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