Kompressor heads
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Novice
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From: Boston, MA
Kompressor heads
stock heads are paper weights now(long story) so I'm stuck with the kompressor heads for awhile I guess. Looking at feuling 574 or SE 259e for cams. Worried about the max lift of the heads and if I'm cutting it too close(max .585). Will this be a decent set up for a 103 fxdb?
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From: san antonio
I can't say for sure because I have not worked with those cams and those heads. However, I suspect that either cam should work as both have lifts under .585" lift stated for the Kompressor heads and I suspect there is some give in the .585" lift. If you had access to a Trock tool you could do a dry run and check for coil bind but I would bet it's not an issue.
If I were choosing between the Fueling cam and the SE cam; it's the Fueling, hands down.
If I were choosing between the Fueling cam and the SE cam; it's the Fueling, hands down.
stock heads are paper weights now(long story) so I'm stuck with the kompressor heads for awhile I guess. Looking at feuling 574 or SE 259e for cams. Worried about the max lift of the heads and if I'm cutting it too close(max .585). Will this be a decent set up for a 103 fxdb?
You could get the heads you have ported as they are already decked and have springs.
A good basic option available over the counter would be the CNC ported stock heads.
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Joined: Jun 2006
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From: san antonio
The OP has many options for heads and cams. However, I took him at his word when he said his heads were "paper weights" which I assume renders them useless and that he was "stuck" with Kompressor heads for a while which I assume meant the he had a set. But maybe I was wrong on both counts; you know what "they" say about assuming.
Of course there are better options than the Kompressor heads and the best option, JMHO mind you, although not the cheapest, would be to pick up a set of take off heads, any year, and have them ported by a reputable head porter.
Have to completely disagree that any of the SE cams mentioned are better options than the Fueling 574. The SE cams are EPA compliant and just don't have the guts that the aftermarket cams offer.
Of course there are better options than the Kompressor heads and the best option, JMHO mind you, although not the cheapest, would be to pick up a set of take off heads, any year, and have them ported by a reputable head porter.
Have to completely disagree that any of the SE cams mentioned are better options than the Fueling 574. The SE cams are EPA compliant and just don't have the guts that the aftermarket cams offer.
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From: Boston, MA
Paper weights as in the dealership jacked up my acr install(which was labor free because it should have been done when the 103 went in) and thrashed the heads. So they put kompressor heads on to make amends. Now the issue is that after doing some research on the heads, I saw that these required adjustable push rods which they didn't install. Hopefully I didn't jack anything up riding it all week with the stock push rods. After I called them about their oversight, they offered to install my cams for the price of parts plus 3 or 4 hours labor(a discount apparently, have to double check) because they're going to be in there anyway.
So now it comes down to whether I let them do the cams while they're in there putting the adjustable push rods in(no labor cost for the push rods because it should have been done) or just have them do the push rods and do the cams myself next winter if I have time.
If I choose to let them do the cams, I was looking at the two I posted earlier, and now S&S 570's were suggested. Haven't had the chance to look at the specs, maybe I should do that now...
I know what the next question is, I drive aggressively and usually ride in the 2.5k-3K range when I'm not driving like a Masshole.
Furthermore, all the dyno guys are backed up from the winter so I'll have to ride with a canned map from SEPST and hopefully auto tune can smooth it out.
This is the last Harley I'll ever buy
Help me Obi-Wan Kenobi, you're my only hope
So now it comes down to whether I let them do the cams while they're in there putting the adjustable push rods in(no labor cost for the push rods because it should have been done) or just have them do the push rods and do the cams myself next winter if I have time.
If I choose to let them do the cams, I was looking at the two I posted earlier, and now S&S 570's were suggested. Haven't had the chance to look at the specs, maybe I should do that now...
I know what the next question is, I drive aggressively and usually ride in the 2.5k-3K range when I'm not driving like a Masshole.
Furthermore, all the dyno guys are backed up from the winter so I'll have to ride with a canned map from SEPST and hopefully auto tune can smooth it out.
This is the last Harley I'll ever buy
Help me Obi-Wan Kenobi, you're my only hope
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As stated, Kompressor heads are just milled stock heads with bigger springs. They bump compression about a half point putting a stock 103 at about 10.3 static with stock gaskets. The fueling 574 cam will make around 190ccp and ought to be a good fit if those are your only choices. The head flow will be the bottleneck for sure. As far as letting the dealer do the work, their track record isn't too good?
Last edited by 0ldhippie; May 12, 2015 at 10:54 PM.
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Thread Starter
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Novice
Joined: Aug 2013
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From: Boston, MA
As stated, Kompressor heads are just milled stock heads with bigger springs. They bump compression about a half point putting a stock 103 at about 10.3 static with stock gaskets. The fueling 574 cam will make around 190ccp and ought to be a good fit if those are your only choices. The head flow will be the bottleneck for sure. As far as letting the dealer do the work, their track record isn't too good?
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Novice
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From: Boston, MA
Anyway, this isn't the correct topic forum for a b**** session about dealerships. My questions are:
1. Are my cam choices good for this current set up and will allow room for improvement once I have the opportunity to send these heads out to get worked by one of the many reputable CNC shops on this forum? I'm open to suggestions of course, but do we really need another cam thread? 😄
2. Can I even rework these heads? They're already decked 60 thou
3.most importantly, what damage, if any, could have been done by the stock push rods? Can I even ride my bike until I get it to the dealer for them to put the correct push rods in?
1. Are my cam choices good for this current set up and will allow room for improvement once I have the opportunity to send these heads out to get worked by one of the many reputable CNC shops on this forum? I'm open to suggestions of course, but do we really need another cam thread? 😄
2. Can I even rework these heads? They're already decked 60 thou
3.most importantly, what damage, if any, could have been done by the stock push rods? Can I even ride my bike until I get it to the dealer for them to put the correct push rods in?