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Author Topic: head work............  (Read 1253 times)
spongebob
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Posts: 70

Alabama


« on: June 07, 2012, 06:42:02 PM »

Got an 2003 Std.......... have had about 3 different dyno runs on bike......... HP for mine is 87...... All the other stock ones I have seen has been in the low 90's to mid 90's...... But anyways, Has anybody had a dyno run stock....... then head work done and then re-dyno.... what increase did you get....... .... Thanks....
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Chrisj CMA
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Posts: 14805


Crestview (Panhandle) Florida


« Reply #1 on: June 07, 2012, 06:57:50 PM »

let me ask you this......if they lied and told you itwas 100hp would you be satisfied? 

IF YES

Then be satisfied.........if shes running well, youll never miss what may be a somewhat innacurate reading anywas
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sandy
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Posts: 5403


Mesa, AZ.


« Reply #2 on: June 08, 2012, 09:16:15 AM »

Look under the swingarm and see if here's a charcoal canister. If so, you have a California bike. It has milder cams for better emissions. My CA Tourer has 87.8 HP and 88.3 FT/LBS of torque. Also altitude and temp and humidity can affect readings.
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98valk
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Posts: 13561


South Jersey


« Reply #3 on: June 11, 2012, 05:02:51 AM »

looks like the HP for cobra pipes.
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1998 Std/Tourer, 2007 DR200SE, 1981 CB900C  10speed
1973 Duster 340 4-speed rare A/C, 2001 F250 4x4 7.3L, 6sp

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John Adams 10/11/1798
Momz
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Posts: 5702


ABATE, AMA, & MRF rep.


« Reply #4 on: June 11, 2012, 05:57:34 PM »

HP is a calculation based on RPM and Torque,
Not all dynos are calibrated the same.
Ambient temperature and humidity also play a large part in the dyno readings.

Yes head work could help,....but you'd need more than head work to see significant increases (like a supercharger).
« Last Edit: June 11, 2012, 06:01:16 PM by Momz » Logged


ALWAYS QUESTION AUTHORITY! 

97 Valk bobber, 98 Valk Rat Rod, 2K SuperValk, plus several other classic bikes
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