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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 14th May 2009
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Default Rough guess on S&S jets with drag pipes 79 XLH

Just ordered a new S&S E for my Daughters 79 XLH, mostly stock with drag pipes, compression 170-165. What jets would you put in before you install it.
They said it comes with 028 intermediate & .066 main.
Thanks
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Old 14th May 2009
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Thats a good start point for a 1000. You may want to go to .0265 intermediate with .66 main. Follow S&S's setup in the manual, easy as....eliminate all air leaks first or make sure there isnt any to begin with.
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Old 14th May 2009
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Default You're going to have tuning problems with those drag pipes...

...S&S carbs and drags are NOT a good combination.
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Old 14th May 2009
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There is no magic pill for carb jetting. I would start with a 29.5 and a 68 then follow the instructions that come with the carb.

you can download the instructions here
http://www.sscycle.com/admin/uploads...ns/51-1012.pdf
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  #5  
Old 14th May 2009
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Default A 29.5/68 is going to be too rich for you. I run a 29.5/66 on my '74...

...but I'm also BELOW sea level here in South Florida, with tons of dense, hot air (humidity) for the carb to deal with.

Unless you like collecting S&S jets, I'd follow Keeno's suggestion of the more moderate 26.5/66 combo.
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Old 14th May 2009
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I've been running wetdreamz with an S&S Super E on my '93 rigid for over 3 years. Runs great!
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Old 14th May 2009
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Default Wait a second...

...no one rang the bell yet for the fight over whether you can run drags with Shorty E carbs or not.

DING!

Okay. Let's scrap in an orderly manner.
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Old 14th May 2009
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Quote:
Originally Posted by Ivan RoachCoach View Post
...no one rang the bell yet for the fight over whether you can run drags with Shorty E carbs or not.

DING!

Okay. Let's scrap in an orderly manner.

You can, BUT it does make tuning a bit more interesting. I currently run drags on mine with a Super E and don't have a problem. I just miss out on some of the mid range.

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Old 14th May 2009
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Why do riders feel the need to defend the fact that they have chosen to run an part on their bike that leaves copious amounts of power on the table and causes tuning problems? It's OK that you have made that choice.
Your choice is your choice, there is no need to defend that choice.
At the same time it is NOT good etiquette to try and tell someone that something that is not the best is OK!
What is good for you, may not be good for them.
So you are in fact giving bad advice.
Give the person all the information and let them make their choice.

It's a known and documented fact that open pipes are not the best choice for the street.

I HATE OPEN EXHAUST! As a professed tuner open exhaust makes me look bad, because I can't always tune around it.

Put what ever you want on your bike, if you have problems be prepared to bite the bullet. And whatever you do, don't blame your tuner when you go against advice.
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  #10  
Old 14th May 2009
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Quote:
Originally Posted by ryder rick View Post
Why do riders feel the need to defend the fact that they have chosen to run an part on their bike that leaves copious amounts of power on the table and causes tuning problems? It's OK that you have made that choice.
Your choice is your choice, there is no need to defend that choice.
At the same time it is NOT good etiquette to try and tell someone that something that is not the best is OK!
What is good for you, may not be good for them.
So you are in fact giving bad advice.
Give the person all the information and let them make their choice.

It's a known and documented fact that open pipes are not the best choice for the street.

I HATE OPEN EXHAUST! As a professed tuner open exhaust makes me look bad, because I can't always tune around it.

Put what ever you want on your bike, if you have problems be prepared to bite the bullet. And whatever you do, don't blame your tuner when you go against advice.
Exactly! I know that by running Wetdreamz pipes that my bike is not running at its full potential. I really could care less that I could squeeze another 3-4 HP (or even 15 for that matter) out of it. I chose the pipes I have because they look great and sound awesome. I don't race my bike, I cruise on it. The speed, horsepower, and torque is just fine for me the way it is.
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