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Sportster Motorcycle Engine Conversions Advice, questions, and tips for 1200, 1250, 1340, 1450 etc... for Sportster and Buell motorcycle engine conversions

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  #1521  
Old 8th July 2018
MatHormell's Avatar
MatHormell MatHormell is offline
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Sportster/Buell Model: XL883R
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Originally Posted by mac93 View Post
Most people don’t realize how much easier the bike is to ride when you leave harder, there’s a fine line between to hard/soft and consistency vs. p/b’s. Time slips tell the story. Even with the the gremlins running around your pit area you made it to the finals. That’s good focused riding right there, as the builder tuner seeing that makes me smile. That’s putting in work.
Its half the fun! Running around to get shit in order to make the next rounds. Chris and I were both having to make some quick diags and repairs. I honestly didn't think he was going to make the semi finals. But we got it sorted out and got our race and it was a good one


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HAMMER PERFORMANCE 90 Ci
CP .500 Dome Pistons
Axtel Cast Iron Cylinders
HAMMER PERFORMANCE .600 Cams
1.725 Ratio S&S Rocker Arms
HAMMER PERFORMANCE Intake Manifold
HSR 48 Miunki
XR1200 Crank Conversion W/ Case Mod 34T
HAMMER PERFORMANCE Sledge+ Head Work
2.020" Intake and 1.630" Exhaust Valves
Conical Valve Springs
S&S Premium Lifters
HAMMER PERFORMANCE Billet Push Rod Bases
Barnett Clutch Hub With Scorpion Clutch
Dynatek 2000i
R&D MOTORSPORTS- TRANSMISSION WORK-REM ISF
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  #1522  
Old 9th July 2018
jkinkade jkinkade is offline
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Sportster/Buell Model: XLH 88" 2003.
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Great , thank's for the pic's, & well done again Mat!!
just looking at your Friends carb, looks like an S&S G? I've seen those ram tubes before, but forgot what they are called? also interesting float bowl he is running!
and can see you took the filter out of your Hammer cleaner, why didn't you just take out side cover off too?
also well done to you both, solving problems as they come up to make each round.
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  #1523  
Old 9th July 2018
MatHormell's Avatar
MatHormell MatHormell is offline
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Sportster/Buell Model: XL883R
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Sportster/Buell Year #2: 2009
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Originally Posted by jkinkade View Post
Great , thank's for the pic's, & well done again Mat!!
just looking at your Friends carb, looks like an S&S G? I've seen those ram tubes before, but forgot what they are called? also interesting float bowl he is running!
and can see you took the filter out of your Hammer cleaner, why didn't you just take out side cover off too?
also well done to you both, solving problems as they come up to make each round.
The novi stack?

And I keep my cover on just to keep my leg out of the throat lol

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  #1524  
Old 9th July 2018
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madnss madnss is offline
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Originally Posted by jkinkade View Post
Great , thank's for the pic's, & well done again Mat!!
just looking at your Friends carb, looks like an S&S G? I've seen those ram tubes before, but forgot what they are called? also interesting float bowl he is running!
and can see you took the filter out of your Hammer cleaner, why didn't you just take out side cover off too?
also well done to you both, solving problems as they come up to make each round.
It’s a super D , novi stack, joker bowl and it was reworked by SA Racing. It’s my my old carb set up I sold to him
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  #1525  
Old 10th July 2018
jkinkade jkinkade is offline
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It’s a super D , novi stack, joker bowl and it was reworked by SA Racing. It’s my my old carb set up I sold to him
Thank's , I love the super D .
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  #1526  
Old 10th July 2018
jkinkade jkinkade is offline
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Originally Posted by MatHormell View Post
The novi stack?

And I keep my cover on just to keep my leg out of the throat lol

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LOL, used to run my twin cam carb Dyna uncovered like that, worked great, but had to remember keep leg away.
did you try with cleaner in & without?
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  #1527  
Old 11th July 2018
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Found the cause of my running issues this weekend. On the way home was telling my buddy David, I bet the emulsion tube or main jet backed off and is sitting in the float bowl cap. Sure enough, pull the cap and out comes the tube and needle jet. Glad it was something very minor but damnit I wish I would of checked it before lining up vs wedman

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  #1528  
Old 7th August 2018
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I have a few changes in the works.

First and foremost I have to repair my tail section and build a better support system to hold it.
I also need to design and build/ weld mounts for a chain guard, going to hang it from the frame, rather than mount it to the swing arm.

I am also thinking I am going to do some testing on the motor. I am going to swap out the 1.725 high ratio roller rocker arms from the exhaust valves and run standard ratio on Exhaust and the high ratios on Intakes. This is just for testing purposes to see what kind of difference it makes.
In addition to the standard ratio arms on the exhaust valves, I am going to drop my head gasket down a size from the current 0.030 to a 0.020. My squish was between 0.045 and.043 in most places so looking to tighten that up closer to .030 and get a small compression bump out of it.
Other things in the works for the near future is a 32T aluminum crank sprocket to get my final drive ratio closer to where I am wanting it. Hopefully I can get cracking on all this very soon, plans to be ready to TNT by mid September and make the Last Bowling Green AMRA Race.
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  #1529  
Old 7th August 2018
jkinkade jkinkade is offline
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Sounds like a positive move Matt!!
do you think you will have to warm up motor before riding off with tighter piston to head clearance? only ask as I think first thing to grow when you first start up is piston, till the rest of motor expands with heat. so at first start up for a short time piston would be close to touching head.
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  #1530  
Old 7th August 2018
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MatHormell MatHormell is offline
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Sportster/Buell Year #2: 2009
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Originally Posted by jkinkade View Post
Sounds like a positive move Matt!!
do you think you will have to warm up motor before riding off with tighter piston to head clearance? only ask as I think first thing to grow when you first start up is piston, till the rest of motor expands with heat. so at first start up for a short time piston would be close to touching head.
From what I understand 0.030 is safe for race applications. Going below and into the 0.020s is where it gets dangerous. I always warm up before a pass though so not to worried about that. Hopefully can squeeze a bit more power out of her with a tad bit more compression

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