Questionable Performance Parts
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4th Gear
Joined: Sep 2013
Posts: 8
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From: Crossroads
Questionable Performance Parts
Hey guys/gals,
I have been "googling" all over this website for something regarding the Dyno numbers I'm seeing and the performance mods I can "See" I inherited my 2002 FXDWG, and it is BADASS! I know it has stage 1 SE intake, Mikuni 42 Carb, and TH exhaust. Went to a bike night recently where they had Harley of Dallas bring out their Mobil dyno. I ran 79hp and 91lbs/tq "rich". From a 4th gear pull as soon as the Tech hit the Gas A/F ratio dropped to 10 all the way through redline. I have since leaned out the carb and working through lil issues that I have noticed since leaning it out. I haveabsolutely NO PROBLEM with those numbers over stock but I'm at a loss for what could be done to this bike cause from what I am seeing around the web is that 88ci with those 3 things is below 91lbs/tq. I know this seems like a stupid concern but I don't wanna spend money on new cams or something like that if it already has them.
I am sorry for the "book" but please any help/guidance would be grateful...
Thanks
Rich
I have been "googling" all over this website for something regarding the Dyno numbers I'm seeing and the performance mods I can "See" I inherited my 2002 FXDWG, and it is BADASS! I know it has stage 1 SE intake, Mikuni 42 Carb, and TH exhaust. Went to a bike night recently where they had Harley of Dallas bring out their Mobil dyno. I ran 79hp and 91lbs/tq "rich". From a 4th gear pull as soon as the Tech hit the Gas A/F ratio dropped to 10 all the way through redline. I have since leaned out the carb and working through lil issues that I have noticed since leaning it out. I haveabsolutely NO PROBLEM with those numbers over stock but I'm at a loss for what could be done to this bike cause from what I am seeing around the web is that 88ci with those 3 things is below 91lbs/tq. I know this seems like a stupid concern but I don't wanna spend money on new cams or something like that if it already has them.
I am sorry for the "book" but please any help/guidance would be grateful...
Thanks
Rich
Road Warrior
Joined: Apr 2010
Posts: 1,739
Likes: 10
From: Suffolk, England
Those mobile dynos, particularly at shows, are more about impressing people than accuracy. The operators are looking for business and making people think they can get 10%+ more power than another tuning shop by messing with the dyno is one way to do it.
In other words, don't trust those numbers you have for a second.
In other words, don't trust those numbers you have for a second.
Thread Starter
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4th Gear
Joined: Sep 2013
Posts: 8
Likes: 0
From: Crossroads
Those mobile dynos, particularly at shows, are more about impressing people than accuracy. The operators are looking for business and making people think they can get 10%+ more power than another tuning shop by messing with the dyno is one way to do it.
In other words, don't trust those numbers you have for a second.
In other words, don't trust those numbers you have for a second.
Well I can see your logic however, there were guys with S&2 124 running 140lbs/tq... which is about accurate... and I saw multiple dynos not just mine... and the numbers were accurate to the type of bike. a 1200 sportster dyno'd mid 70lbs/tq. but I will keep that in mind. however, I can eat my uncles SG 96 and my moms 103 and they both have mods. Just trying to get to the bottom of this... thanks
Ok, first off I have to say I am not a wrench. That being said my bike has stage 1 with V & H pipes, and S & S 510 cams. I took it in to be Dyno'd because it was pinging. Chris Revis who is the local speed guru came up with 79 HP and 89 FT LBS. The pinging got worse!!! I took the bike to Fresno Harley and they had to rebuild my CV carb. Problem fixed. My question is, how accurate can that Dyno be if he couldn't even tell my carb sucked?
Extreme HDF Member
Joined: Aug 2012
Posts: 11,392
Likes: 184
From: Big ol Titties
Hey guys/gals,
I have been "googling" all over this website for something regarding the Dyno numbers I'm seeing and the performance mods I can "See" I inherited my 2002 FXDWG, and it is BADASS! I know it has stage 1 SE intake, Mikuni 42 Carb, and TH exhaust. Went to a bike night recently where they had Harley of Dallas bring out their Mobil dyno. I ran 79hp and 91lbs/tq "rich". From a 4th gear pull as soon as the Tech hit the Gas A/F ratio dropped to 10 all the way through redline. I have since leaned out the carb and working through lil issues that I have noticed since leaning it out. I haveabsolutely NO PROBLEM with those numbers over stock but I'm at a loss for what could be done to this bike cause from what I am seeing around the web is that 88ci with those 3 things is below 91lbs/tq. I know this seems like a stupid concern but I don't wanna spend money on new cams or something like that if it already has them.
I am sorry for the "book" but please any help/guidance would be grateful...
Thanks
Rich
I have been "googling" all over this website for something regarding the Dyno numbers I'm seeing and the performance mods I can "See" I inherited my 2002 FXDWG, and it is BADASS! I know it has stage 1 SE intake, Mikuni 42 Carb, and TH exhaust. Went to a bike night recently where they had Harley of Dallas bring out their Mobil dyno. I ran 79hp and 91lbs/tq "rich". From a 4th gear pull as soon as the Tech hit the Gas A/F ratio dropped to 10 all the way through redline. I have since leaned out the carb and working through lil issues that I have noticed since leaning it out. I haveabsolutely NO PROBLEM with those numbers over stock but I'm at a loss for what could be done to this bike cause from what I am seeing around the web is that 88ci with those 3 things is below 91lbs/tq. I know this seems like a stupid concern but I don't wanna spend money on new cams or something like that if it already has them.
I am sorry for the "book" but please any help/guidance would be grateful...
Thanks
Rich
Thread Starter
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4th Gear
Joined: Sep 2013
Posts: 8
Likes: 0
From: Crossroads
Is there fluid inside the cam chest and how would I be able to tell are there stamps on the ends of the cams?
Thread Starter
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4th Gear
Joined: Sep 2013
Posts: 8
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From: Crossroads
Ok, first off I have to say I am not a wrench. That being said my bike has stage 1 with V & H pipes, and S & S 510 cams. I took it in to be Dyno'd because it was pinging. Chris Revis who is the local speed guru came up with 79 HP and 89 FT LBS. The pinging got worse!!! I took the bike to Fresno Harley and they had to rebuild my CV carb. Problem fixed. My question is, how accurate can that Dyno be if he couldn't even tell my carb sucked?
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Extreme HDF Member
Joined: Aug 2012
Posts: 11,392
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From: Big ol Titties
Here's a set of woods 555's.
Here's some stockers, notice the difference in how wide and steep the lobes are.
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Road Captain
Joined: Apr 2013
Posts: 583
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From: australia
Those mobile dynos, particularly at shows, are more about impressing people than accuracy. The operators are looking for business and making people think they can get 10%+ more power than another tuning shop by messing with the dyno is one way to do it.
In other words, don't trust those numbers you have for a second.
In other words, don't trust those numbers you have for a second.
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