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

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  #41  
Old 4 Weeks Ago
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Ferrous Head Ferrous Head is offline
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Quote:
Originally Posted by brucstoudt View Post
nope 3-7/16'' std.bore the 3-3/8''.060 over and run the shovelhead stroker pistons.
The Strociek bores measure out at 3/8ths and I don't want to have to bore them that far to suit other pistons. They are new, so at the moment, no problem.

Technically if I bore that far as well I will exceed the class limit.

The Axtell cylinders I have are defiantly 3/8 plus 30 so not ready to be bore to 60 yet.
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  #42  
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man this is a great thread to follow,good luck with this.you said something about a little taller valves.i'm running the kibblewhite race valves in my race bike,longer then stock.they also make a taller spring kit for these valves which i'm runnin.
exhaust #20-4168
intake #20-4167
check out their wbsite and hopefully i led you in the right direction
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  #43  
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Sportster/Buell Model: XLB, XLCH, Sporton
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Yes, took me a little time to sort out just what the seats were cut for. Exhaust was pretty easy at 1 3/4 but ut was hard to work out if they went with the stock 1 15/16ths for the Intake or if they went with an "R" valve.
But I've been onto my local Kibblewhite distributor and they have what I need in stock.
So far, so good.
I have some springs and top collars. keepers etc but haven't gone anywhere near working out what the cam needs to be yet.
So, spring poundage and shimming yet to be determined.
I don';t have any lower collars and might need to look for some of the Andrews lower ones.
Also going to have to check out who still makes custom push rods.
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  #44  
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Ferrous Head Ferrous Head is offline
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Sportster/Buell Model: XLB, XLCH, Sporton
Sportster/Buell Year: 1962
Sportster/Buell Model #2: XLCH
Sportster/Buell Year #2: 1966
Other Motorcycle Model: XLCH (Another one)
Other Motorcycle Year: 1966
Reputation: 2645283
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Yes, took me a little time to sort out just what the seats were cut for. Exhaust was pretty easy at 1 3/4 but ut was hard to work out if they went with the stock 1 15/16ths for the Intake or if they went with an "R" valve.
But I've been onto my local Kibblewhite distributor and they have what I need in stock.
So far, so good.
I have some springs and top collars. keepers etc but haven't gone anywhere near working out what the cam needs to be yet.
So, spring poundage and shimming yet to be determined.
I don';t have any lower collars and might need to look for some of the Andrews lower ones.
Also going to have to check out who still makes custom push rods.
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  #45  
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that kibblewhite spring kit comes with upper and lower collers and work well.talk to your distributer
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  #46  
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lightweight racing spring kit comes with everything,up to .480 lift.#20-2210.good luck,i've had luck with my cams and valvetrain
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  #47  
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RicThompson RicThompson is online now
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I have the KIBBLEWHITE lightweight spring kit in my 64". Running their valves as well.
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  #48  
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Do they come with shims as well ?

Different spring rates ?

I will be using their valves so I'll talk to them (if I can) about the spring kits.
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  #49  
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https://shop.kpmivalvetrain.com/p/ra...ications?pp=24

http://media.kpmi.us/ins/999-100020.pdf
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  #50  
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Sportster/Buell Model: XLB, XLCH, Sporton
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Other Motorcycle Year: 1966
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Ric, Thanks, the data sheet is what I've been scratching around for.

And that price is better than what I just got from Serco.

I was thinking Titanium upper collars but probably don't really need them
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