Which SE head?
Thread Starter
|
Road Captain
Joined: Jul 2007
Posts: 508
Likes: 0
From: Dubai
Which SE head?
Talking only performance & reliability wise. If you are stuck with SE heads, which one would you go for & why? Or is it just better to port the original heads?
Would SE CNC ported head perform better than a ported SE MCR head?
Thanx in advance.
Would SE CNC ported head perform better than a ported SE MCR head?
Thanx in advance.
Tourer
Joined: Mar 2007
Posts: 431
Likes: 0
the mcr is the best head they have, in my opinion...but it has around 78cc chambers and makes for very high compression in a flattop 103...dished pistons are an option, if the dish doesn't diminish the quench area...I do not care for fancy shaped (103+, htcc, cnc ported, etc) combustion chambers, they're diffcult to set up correctly...and the new, modified bathtub heads (acr, 110+, mva, cvo 110) have huge valves and ports, do not flow well, have little quench area, and are too expensive
having your stock heads ported by a pro is the best way to optimize performance and reliability...if reliability is a big concern, it is best to choose a mild, low compression package including bolt-in cams
having your stock heads ported by a pro is the best way to optimize performance and reliability...if reliability is a big concern, it is best to choose a mild, low compression package including bolt-in cams
Thread Starter
|
Road Captain
Joined: Jul 2007
Posts: 508
Likes: 0
From: Dubai
the mcr is the best head they have, in my opinion...but it has around 78cc chambers and makes for very high compression in a flattop 103...dished pistons are an option, if the dish doesn't diminish the quench area...I do not care for fancy shaped (103+, htcc, cnc ported, etc) combustion chambers, they're diffcult to set up correctly...and the new, modified bathtub heads (acr, 110+, mva, cvo 110) have huge valves and ports, do not flow well, have little quench area, and are too expensive
having your stock heads ported by a pro is the best way to optimize performance and reliability...if reliability is a big concern, it is best to choose a mild, low compression package including bolt-in cams
having your stock heads ported by a pro is the best way to optimize performance and reliability...if reliability is a big concern, it is best to choose a mild, low compression package including bolt-in cams
Should I go for Wiseco flat top pistons rated @ CR 9.6 part No.1761
or am I better of with SE Forged flat top stroker pistons CR 10.5 part No.22942-00
Tourer
Joined: Mar 2007
Posts: 431
Likes: 0
the stock heads average 86cc, but can range from 84 to 89...it's best to measure them
a popluar build these days is flattop 103 pistons, stock heads, .030" cometic head gaskets, and se211cams...if I were riding in 130 degree weather, I'd want low compression like this
or you could use a little smaller cam like andrews 54, but the compression would be a little higher
what rpm do you want your power?
a popluar build these days is flattop 103 pistons, stock heads, .030" cometic head gaskets, and se211cams...if I were riding in 130 degree weather, I'd want low compression like this
or you could use a little smaller cam like andrews 54, but the compression would be a little higher
what rpm do you want your power?
Last edited by skyhook; Dec 20, 2008 at 09:05 AM.
Ultimate HDF Member
Joined: Jan 2008
Posts: 6,532
Likes: 132
From: SoCal
I have the MVA's and rather than speculating on why something may or may not work the way I like, I can tell you from riding experience that they work! No ping plenty of torque and my heavy bike with crappy stock gearing is fun as hell to ride. And before all the guy's start asking for dyno sheets , I don't have them yet, bike has not been dynoed yet, and like I said it is a blast to ride!
Tourer
Joined: Mar 2007
Posts: 431
Likes: 0
I hope to be proven wrong about those heads...really I use a lot of s.e. stuff as you can see by my signature...thing is that they are relatively new, and we'll need to see a bunch of dyno sheets with them before we can make final judgement...until then I cannot recommend them
I'm glad that your build runs good!
I'm glad that your build runs good!
Banned
Joined: Oct 2008
Posts: 164
Likes: 0
From: Hollis
All stock heads chamber volume will vary from unit to unit. The chambers can be increased or decreased in volume to the specific needs of your cams and type of pistons you use. Again, until you know WHERE you want your powerband to be and which cam you go with, I wouldnt worry about chamber volume or anything else yet. One thing at a time if you want your build done right the first time. Figure out your riding style and where you want your power to come on strongest, then find a cam that will accomplish that for you, then have your heads worked to maximize the cam you picked out. Real simple.
Trending Topics
Banned
Joined: Oct 2008
Posts: 164
Likes: 0
From: Hollis
the stock heads average 86cc, but can range from 84 to 89...it's best to measure them
a popluar build these days is flattop 103 pistons, stock heads, .030" cometic head gaskets, and se211cams...if I were riding in 130 degree weather, I'd want low compression like this
or you could use a little smaller cam like andrews 54, but the compression would be a little higher
what rpm do you want your power?
a popluar build these days is flattop 103 pistons, stock heads, .030" cometic head gaskets, and se211cams...if I were riding in 130 degree weather, I'd want low compression like this
or you could use a little smaller cam like andrews 54, but the compression would be a little higher
what rpm do you want your power?
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Cruiser
Joined: Feb 2008
Posts: 137
Likes: 2
From:
its listed in one place on the site with cam specs and not the other lol
Road Master
Joined: Jan 2007
Posts: 1,221
Likes: 2
From:
I would suggest having your stock heads ported, call some shops & talk to em about what kind of power you want & where you want it & 2 up riding? Baisley, hillside, T-man, ect. All these guys will shoot you an honest straight combination of parts to get you exactly what your lookin for, and they will fully explain why it's better than a off the shelf SE build! I won't cause I'm tired of arguing with people on here that don't know any better, so I simply point the way to proven shops!