how-to read dyno
Thread Starter
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Cruiser
Joined: Jan 2007
Posts: 210
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From: Corpus Christi, Tx.
how-to read dyno
Can someone explain to me how the dyno chart isread? I hardly ever get to 5500 rpm. At 70mph I am at 3000rpm.I am looking into a hd big bore kit. This is what I am thinking about. Any suggestions? I already have theSE 2 into 1,Hypercharger with stinger trap,( SE 44mm cv carb & big bore intake - not yet installed ). Would like the 1550 stage4 kit which include: big bore cylinders, TCHC forged pistons, TC performance heads & compression release. Now to the fun part! Should I go with the 203, 211,257 or 253cam.Alsowhich ignition sys. the pro adjustable or the pro race?For now I can only do the cam kit. Also on the 2 into 1 exhaust,should I remove the baffel and packing or leave it in, or just remove the packing?
Another question, the 1550 w/ cnc ported heads looks realy good to. stage 4, or cnc ported heads?
Another question, the 1550 w/ cnc ported heads looks realy good to. stage 4, or cnc ported heads?
Extreme HDF Member
Joined: Nov 2006
Posts: 13,389
Likes: 26
From: Windham,Maine
RE: how-to read dyno
You have a lot of choices to make,and only you can decide.Go talk to the dyno people and try to get an idea of what you want for performance and where you want it.Then they might make suggestions.Most Harley riders want all the torque the V-Twin can muster,and maybe a hp number to brag about.
Road Master
Joined: Dec 2006
Posts: 1,058
Likes: 6
From: Omaha Nebraska
RE: how-to read dyno
ORIGINAL: apachethunder03
Maybe I'm asking the wrong questions!
Maybe I'm asking the wrong questions!
Thread Starter
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Cruiser
Joined: Jan 2007
Posts: 210
Likes: 0
From: Corpus Christi, Tx.
RE: how-to read dyno
Whoa! What? I think you lost me even more. Let me start over.
Right now all I can afford is a cam job. I am told the biggest I can go is the 211. Later I want to install the jugs n heads. Only 95". Not intrested in anyting bigger. Would a 203 or 204 be better? What is the difference between the two.A friend tried to explain tq is better to get going, hp to keep going! OK, but then what? Once going the rpm is at 3k not 62k or above as shown on tq curve. Maybe that is what is throwing me off. When I look at the tq curve at 3k, hp is really low and tq is high. Then hp goes up. Tq goes up a little but then drops.Again, at hiwy speed I am at 3k. I don't hardly ever go over 45k on accel. Also with the SE 2-1, with or w/o baffle, with or w/o wrapping? I really am ignorant on this.
Right now all I can afford is a cam job. I am told the biggest I can go is the 211. Later I want to install the jugs n heads. Only 95". Not intrested in anyting bigger. Would a 203 or 204 be better? What is the difference between the two.A friend tried to explain tq is better to get going, hp to keep going! OK, but then what? Once going the rpm is at 3k not 62k or above as shown on tq curve. Maybe that is what is throwing me off. When I look at the tq curve at 3k, hp is really low and tq is high. Then hp goes up. Tq goes up a little but then drops.Again, at hiwy speed I am at 3k. I don't hardly ever go over 45k on accel. Also with the SE 2-1, with or w/o baffle, with or w/o wrapping? I really am ignorant on this.
Extreme HDF Member
Joined: Nov 2006
Posts: 13,389
Likes: 26
From: Windham,Maine
RE: how-to read dyno
I would not spend too much time worrying about Dyno numbers.Make sure the bike is running as good as can be,keep it maintained,and enjoy.A Dyno run will tell you what you need if you need to know it,and the operator should be able to tweek the motor where it needs to be,O2 etc.
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Road Master
Joined: Dec 2006
Posts: 1,058
Likes: 6
From: Omaha Nebraska
RE: how-to read dyno
ORIGINAL: apachethunder03
Whoa! What? I think you lost me even more. Let me start over.
Right now all I can afford is a cam job. I am told the biggest I can go is the 211. Later I want to install the jugs n heads. Only 95". Not intrested in anyting bigger. Would a 203 or 204 be better? What is the difference between the two.A friend tried to explain tq is better to get going, hp to keep going! OK, but then what? Once going the rpm is at 3k not 62k or above as shown on tq curve. Maybe that is what is throwing me off. When I look at the tq curve at 3k, hp is really low and tq is high. Then hp goes up. Tq goes up a little but then drops.Again, at hiwy speed I am at 3k. I don't hardly ever go over 45k on accel. Also with the SE 2-1, with or w/o baffle, with or w/o wrapping? I really am ignorant on this.
Whoa! What? I think you lost me even more. Let me start over.
Right now all I can afford is a cam job. I am told the biggest I can go is the 211. Later I want to install the jugs n heads. Only 95". Not intrested in anyting bigger. Would a 203 or 204 be better? What is the difference between the two.A friend tried to explain tq is better to get going, hp to keep going! OK, but then what? Once going the rpm is at 3k not 62k or above as shown on tq curve. Maybe that is what is throwing me off. When I look at the tq curve at 3k, hp is really low and tq is high. Then hp goes up. Tq goes up a little but then drops.Again, at hiwy speed I am at 3k. I don't hardly ever go over 45k on accel. Also with the SE 2-1, with or w/o baffle, with or w/o wrapping? I really am ignorant on this.