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Sportster Motorcycle - Bottom End Cams, Cases, Gears, Flywheel, Piston Conecting Rods, Oil Pump, etc...

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Old 19th February 2020
Jens L Jens L is offline
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Join Date: Nov 2019
Posts: 6
Sportster/Buell Model: Sportster 883 project
Sportster/Buell Year: 1994
Reputation: 10
Jens L is an unknown quantity at this point
Default Best Street/track Camshaft for boost, help??? :)

Hi XlForum members

Cam question.

i'm completly new to the hole boost thing, but thinking about adding a centrifugal supercharger from rotrex on my 1993 xl project..

I Know valve overlab is a important point, but how much overlab is acceptable?, as all the cams are for the sportster is for natrual aspirated engines with loads of overlab (what I figured, correct me, if im wrong!? )

Is there a maximum lift when boosted or something to keep in mind when boosting it ???

i´d seached on this Cam overview (Xl in the bottom of the page) http://www.nightrider.com/biketech/d...erCamSpecs.pdf

Wondering if the Red Shift 585V2 could be a good choice?
specs on Red Shift 585V2 can be seen on the link above


At this point I have for this sections of the motor stock xl 1993 cams and brand new buell s1 cams. Screamin eagle high lift solid rocker arms, Jims hydrosolid tappets, buell xb9 crankshaft, S&S pushrods, stock xb9 heads,valves and beehive springs.
The screamin eagle high lift solid rocker arms are intended to be changed to roller rocker arms instead, with stock lift.
new double valve springs to match rpm and lift is gonna be add´et

the xb9 crank is gonna be remade with forged rods, but diffrent thread, different subject..

The s1 cams should have .497 lift but can't find duration specs on them?

the cam is desired to do it's best at a 4000-7500rpm range.. revlimeted at 8000rpm and i wish it to be running for 8000-10.000miles before complete restore of the motor...

Could a regrind of a existing street/track cam be the best way ?
or should a custom cam sollution be made?, which companys can provide me this complete service?
Should i be thinking of getting thicker valve stems when changing to better valves ? (Thinking of reliability when intended to run 8000-10000miles, not best performance)


Best Regards Jens L
Denmark
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