Anybody ever fit knuckle heads on an ironhead sportster? - The Jockey Journal Board

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Old 06-27-2016, 04:00 PM   #1
old stale negative
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Default Anybody ever fit knuckle heads on an ironhead sportster?

My 73 year old father in law is about to undertake this project. Any advice, tips, tricks, or previous experience and suggestions greatly appreciated. He's a very experienced HD chopper builder, but he doesn't read very well so he asked me to "ask the internet" for him
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Old 06-27-2016, 04:28 PM   #2
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Default Re: Anybody ever fit knuckle heads on an ironhead sportster?

Well there was a shovster modification where you ran big twin shovelheads on sportster. Maybe if you can ask the internet for info on those and find the person that made the necessary cylinder barrels and convince him to drill you a set in the knuckle bolt pattern you would have a start on it.
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Old 06-27-2016, 09:18 PM   #3
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Default Re: Anybody ever fit knuckle heads on an ironhead sportster?

Yup Ron Jr.

Most don't know that Jr was the mad scientist coming up with alot of the crazy stuff back then. His dad was top notch too! Be prepared for a good long BS session when you call him. He's a great guy and a wealth of knowledge.
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Old 06-28-2016, 01:37 PM   #4
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Default Re: Anybody ever fit knuckle heads on an ironhead sportster?

Holy smokes, that is a cool lookin' motor. Anyone got bigger pics?
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Old 06-28-2016, 01:47 PM   #5
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Default Re: Anybody ever fit knuckle heads on an ironhead sportster?

Wow, a quick search found them.





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Old 06-28-2016, 03:16 PM   #6
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Default Re: Anybody ever fit knuckle heads on an ironhead sportster?

I remember a mag article about knuckster , panster + shovster , no doubt it was Trock , probably info on JJ
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Old 06-28-2016, 04:43 PM   #7
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Default Re: Anybody ever fit knuckle heads on an ironhead sportster?

He is a member, PM him
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Old 06-28-2016, 06:09 PM   #8
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Default Re: Anybody ever fit knuckle heads on an ironhead sportster?

Beautiful. Thanks everybody.
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Old 07-01-2016, 06:06 PM   #9
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Default Re: Anybody ever fit knuckle heads on an ironhead sportster?

Knuck top ends are about a bulletproof as you can get. Might wind up with a crazy fast Sportster. I do remember the Shovesters being fast but don't remember them lasting long.
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Old 07-02-2016, 03:16 AM   #10
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Default Re: Anybody ever fit knuckle heads on an ironhead sportster?

Very interesting, I got a knack for bastard engines especially but bastard bikes in general. Keep the coooool info coming.

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Old 07-10-2016, 04:46 AM   #11
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Default Re: Anybody ever fit knuckle heads on an ironhead sportster?

Dunno if this helps.....
Ruben from Wingpalace made a knuckle head kit for shovel engines.
So your engine looks like a knucklehead.
I have no idea how ironhead and shovelhead engines relate, though.....
(The linked website is in Dutch, but if you email him, he can help you out, I reckon)
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