performance heads???
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Road Master
Joined: Jul 2007
Posts: 987
Likes: 2
From: santa rosa ca.
performance heads???
i want to do a performanc upgrade maybe heads and 95" kit (04 road king efi, s&\\;s 510g power cammander, v&\\;h duals) ive looked a t HQ but seems to be pretty pricy. I'dliketo use all my part already installed, just add heads and big bore. any suggestions?? how do SE kit work whats the differance in the two [htcc and regular].help me out i know you guys have done this a bunch thanks
Road Master
Joined: Jun 2006
Posts: 783
Likes: 1
From:
RE: performance heads???
HTCC (high torqe compresion chamber) This set up uses diffrent pistons and head compresion chamber that the stock s.e. kits (flat tops). you will probably spend just as much as a h.q. set up doing this. The problem is you need a kit to have it perform properly, something designed to work together if you want to get the best out of a build. Out side of that the heads you use need to work well with the cams you use as well as compresion ratio. If you use parts here and there you run a risk of having a bike that runs bad. Find a proven set up and run with it one that matches what you want out of a bike, you will be much happyer.
Extreme HDF Member
Joined: Apr 2006
Posts: 10,449
Likes: 46
From: Roswell, GA
RE: performance heads???
Personally, I wouldn't let a $300 set of cams dictate a build. \\;\\\\\\; As for HQ being "pricey," what kind of performance do you want? \\;\\\\\\; There is a big performance difference between fully ported heads (HQ's being one example) and street ported heads, which are about $400 less than HQ's fully ported heads. \\;\\\\\\; Both can make 100/100 but the fully ported head motor will make power \\;\\\\\\;earlier and longer, will be easier to tune, and deliver better fuel economy even with a larger cam.
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My buddy did the street ported 95" build \\;\\\\\\;with \\;\\\\\\;SE 203 cams on an '02 RK and \\;\\\\\\;was slower than my 88 with bolt in HQ 0034 cams. \\;\\\\\\; He then bought HQ 0034 cams, had it fully tuned by a disciple of Doc1, and his street ported 95" bike makes 95 hp/101 tq. \\;\\\\\\; It is \\;\\\\\\;still is not faster than my 88 from roll on to 70-80 mph, or it may be just slightly faster. \\;\\\\\\; And that's after he's spent at least $1800 on parts and doing the work himself. \\; My 88 is bone stock except for HQ 0034 cams (pure bolt in cam using the stock push rods), Rinehart TD's and SE a/c and a good SERT tune with 50K miles.
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Another buddy did an HQ 95" Sport Touring build on his '06 EGC, and his bike rides away from meabsolutely no comparison between these two 95" builds. \\;\\\\\\; At most, there is a $300-500 difference in parts costs between these two.
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I'm all for thrift\\\\\\; but, the difference in performance is significant for a cost difference that is pretty darn modest by comparison IMO.
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My buddy did the street ported 95" build \\;\\\\\\;with \\;\\\\\\;SE 203 cams on an '02 RK and \\;\\\\\\;was slower than my 88 with bolt in HQ 0034 cams. \\;\\\\\\; He then bought HQ 0034 cams, had it fully tuned by a disciple of Doc1, and his street ported 95" bike makes 95 hp/101 tq. \\;\\\\\\; It is \\;\\\\\\;still is not faster than my 88 from roll on to 70-80 mph, or it may be just slightly faster. \\;\\\\\\; And that's after he's spent at least $1800 on parts and doing the work himself. \\; My 88 is bone stock except for HQ 0034 cams (pure bolt in cam using the stock push rods), Rinehart TD's and SE a/c and a good SERT tune with 50K miles.
 \\;\\\\\\;
Another buddy did an HQ 95" Sport Touring build on his '06 EGC, and his bike rides away from meabsolutely no comparison between these two 95" builds. \\;\\\\\\; At most, there is a $300-500 difference in parts costs between these two.
 \\;\\\\\\;
I'm all for thrift\\\\\\; but, the difference in performance is significant for a cost difference that is pretty darn modest by comparison IMO.
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Ultimate HDF Member
Joined: Feb 2006
Posts: 5,939
Likes: 3
From: TX
RE: performance heads???
If you want the most from your build, you seriously need to consider a "package". You need to have components that are designed to work "together" AND produce (repeatably) the particular results you are looking for.
 \\;
There are a TON of good &\\; great parts, but not all of them work well together. This is "The Secret" that people just trying to "sell" you something will never tell you.
 \\;
DO YOU HOMEWORK THOROUGHLY!!!!! \\;
 \\;
There are a TON of good &\\; great parts, but not all of them work well together. This is "The Secret" that people just trying to "sell" you something will never tell you.
 \\;
DO YOU HOMEWORK THOROUGHLY!!!!! \\;
Elite HDF Member
Joined: Jan 2008
Posts: 4,351
Likes: 461
From: Illinois
RE: performance heads???
I am thinking of putting performance heads on my bike after riding season. I am undecided if I am going to scrap what I have and go with a complete HQ kit, or should I just put performance heads and cams and maybe even pistons to match on my current motor.
 \\;
Reliability is almost as important to me as performance. Another limiting factor I have is that I don't know of an indy shop in my part of the country that is capable of a dyno tune.
 \\;
I like the idea of the automatic compression releases on the SE heads. Anyone know of a great combination of parts sticking with SE products that would go well with the basic motor (jugs and crank) that I have now?
 \\;
Dennis
 \\;
Reliability is almost as important to me as performance. Another limiting factor I have is that I don't know of an indy shop in my part of the country that is capable of a dyno tune.
 \\;
I like the idea of the automatic compression releases on the SE heads. Anyone know of a great combination of parts sticking with SE products that would go well with the basic motor (jugs and crank) that I have now?
 \\;
Dennis
Elite HDF Member
Joined: Jan 2008
Posts: 4,351
Likes: 461
From: Illinois
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Tourer
Joined: Aug 2005
Posts: 376
Likes: 0
From: Monroe, WI
RE: performance heads???
I would look at GMR or HQ both are great I went with GMR and just finished my kit last week Dyno'd after 300 miles and got 106/107 HP/TQ with a 98"
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Tourer
Joined: Jul 2007
Posts: 258
Likes: 0
From: north central missouri
RE: performance heads???
ACR stands for automatic compression release. From what I have heard by asking around with engine builders is that they are not even close to being worth the money for a performance build. I did a lot of research and reading on these forums and decided to go with the HQ head work and cams.
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 \\;I bought a set of take off heads from a harley dealer and sent them to HQ for porting so my bike would not be down during the machine work. They got them done and shipped back in about 4 weeks. I will be installing them next weekend, but just looking at the difference in the ports is awesome. They dont just "hog 'em out" like some I've seen. They reshaped the ports to an extent. Very nice work!!
 \\;
 \\;I bought a set of take off heads from a harley dealer and sent them to HQ for porting so my bike would not be down during the machine work. They got them done and shipped back in about 4 weeks. I will be installing them next weekend, but just looking at the difference in the ports is awesome. They dont just "hog 'em out" like some I've seen. They reshaped the ports to an extent. Very nice work!!
