Lets talk about it. After market crank and rods, lighten flywheels, knife edged wheels, windage tray. Anyone have exp with after market rods and cranks?

 

I do,done just about everything you can think of over the years,what exactly are you thinking about?

 

When prodrag talks, I try to listen.

 

I really don't know. Give me some ideas

 

Subscribed.

 

what are you doing,hot rod for the street,drag bike,something in between?what bore/stroke,RPM range.

 

Street/ strip more strip. Factory bore 1250 cc. 120 plus hp. Bike will pull power beyond 7500

 

Factory stroke too. Bike might even pull 7800 but not sure if that's the smartest thing to do.

 

is this built already or is this what your thinking of doing? (sorry about all the questions)

 

The engine is done. Ran it last year. Just looking to beef up the bottom end and maybe see what can be done to increase power with bottom end work. I dont know much about lower ends.

Im scared the rods are going break or the crank will spread.

Im running pump gas.

Bike turned 7400ish all last year crossing trapps in 4th gear. A lot of rpm for a stock lower end i would think.

1992 Sportster


HAMMER PERFORMANCE Bolt-on 1250 Kit with 30 Degree Reverse Dome Pistons
HAMMER PERFORMANCE Sledge Head Porting Service on XB heads
HAMMER PERFORMANCE CRUSH 600 Cams
HAMMER PERFORMANCE Billet Intake Manifold
Mikuni HSR45 Carburetor
Patriot Defender Exhaust System

bike is 10.9 to 1 compression. 9.3 to 1 corrected compression.
1.98 intake valves
stock lower end as of now.