Originally Posted by marktm200
Would I be better off having my heads ported or going with stock xb?
Your stock heads have some problems that are difficult & not particularly cost effective for a head porter to fix. Read about them here
and pay particular attention to the chambers and the pictures of the ports from the chamber side. So while we could make them capable of supporting a lot more power, a person has to question whether or not it's worthwhile to pour that much money into a casting that's got some inherent design limitations.
Honestly, we could make a much better set of heads out of a pair of 883 heads of any vintage. Read this thread
, for example, to see what we're doing with 883 heads now; 100hp is certainly within range when HAMMER Dan prepares a set. You could pick up a pair of those fairly cheap.
But also think about cosmetics; your cylinders are black with highlighted fins, right? What will silver heads, i.e. most XB and 883 heads, look like over those cyls? Is that acceptable to you? Or you could go straight black from an 883R or later XB, and then try to highlight the fins manually.
The 2004-2006 XL1200 head is, from a performance point of view, equivalent to the XB head, and they're black with highlighted fins which would match your cyls. They're also harder to come by and more expensive.
Either the XB or late model XL1200 heads are available from HAMMER PERFORMANCE here
If you end up porting your heads, keep in mind that the head work that you used
to be able to get from either NRHS or HAMMER is now available only
from HAMMER PERFORMANCE. Read here for more information about this CNC process
which has been under development and refinement for almost a decade now, has had thousands of sets of XL heads run through it, and has put more XL's over 100hp than anyone else out there. Also keep in mind that NRHS has not yet updated their web site, so all the dyno sheets and head pictures they show reflect work that's now only
available from HAMMER PERFORMANCE.