What I learned on the Dyno today.
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Road Warrior
Joined: Dec 2012
Posts: 1,690
Likes: 246
From: Lakeville, MN
What I learned on the Dyno today.
I now have a baseline but I don't know what it means.
Today Faribault HD had a pig roast and Dyno Shootout so we rode down there today to check the scene. The Heritage has never been on a Dyno so I thought WTF. $25 to enter.
My numbers were 76 HP and 89 TQ.
I talked to the mechanic that was on it for the dyno and he said she's tuned perfectly but are you running these pipes (VH Long Shots) without baffles? I said yes. He said your numbers would be quite a bit higher if you just put some baffles in, it's starving for some back pressure.
Damn. I really liked that sound...the loud annoying pipes, the overrun on decal and shifting...but alas, the man said to put them in and I do as I'm told.
So I video'd the whole thing which was cool but I also got to see by bike fall apart right in front of my eyes. My air cleaner cover vibrated loose, my saddlebag guard/rear highway bars were both vibrated loose and both passenger footpeg bolts were loose. GEEZUS
So what did I learn? Running on the Dyno is HARD on a old girl!! It also taught me that I need to recheck all my Loctite and tighten this thing up! Everything is put back together, nothing fell off on the way home. I just put the baffles in...I've never had them in the pipes....and she's quiet. It's sort of gross to listen to after the monster I'm used to. I took her out to light it up a bit and while the sound is very different, either I'm crazy or it's true...the bike pulled harder and ran better. No decal pop, no nuthin, just a solid (quieter) 17 year old Heritage.
I'll get used to the sound, I'm thankful that I got to witness the vibration of parts so I could fix them up and generally speaking the numbers don't mean much to me but it was exhilarating to hear and see but it's possible that I gained some humility on the loud pipes and gained some HP and TQ. My *** dyno says yes.
Today Faribault HD had a pig roast and Dyno Shootout so we rode down there today to check the scene. The Heritage has never been on a Dyno so I thought WTF. $25 to enter.
My numbers were 76 HP and 89 TQ.
I talked to the mechanic that was on it for the dyno and he said she's tuned perfectly but are you running these pipes (VH Long Shots) without baffles? I said yes. He said your numbers would be quite a bit higher if you just put some baffles in, it's starving for some back pressure.
Damn. I really liked that sound...the loud annoying pipes, the overrun on decal and shifting...but alas, the man said to put them in and I do as I'm told.
So I video'd the whole thing which was cool but I also got to see by bike fall apart right in front of my eyes. My air cleaner cover vibrated loose, my saddlebag guard/rear highway bars were both vibrated loose and both passenger footpeg bolts were loose. GEEZUS
So what did I learn? Running on the Dyno is HARD on a old girl!! It also taught me that I need to recheck all my Loctite and tighten this thing up! Everything is put back together, nothing fell off on the way home. I just put the baffles in...I've never had them in the pipes....and she's quiet. It's sort of gross to listen to after the monster I'm used to. I took her out to light it up a bit and while the sound is very different, either I'm crazy or it's true...the bike pulled harder and ran better. No decal pop, no nuthin, just a solid (quieter) 17 year old Heritage.
I'll get used to the sound, I'm thankful that I got to witness the vibration of parts so I could fix them up and generally speaking the numbers don't mean much to me but it was exhilarating to hear and see but it's possible that I gained some humility on the loud pipes and gained some HP and TQ. My *** dyno says yes.
Thread Starter
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Road Warrior
Joined: Dec 2012
Posts: 1,690
Likes: 246
From: Lakeville, MN
No it's not stock. it's got a Andrews EV27 cam, SE heavy breather and a Dynatek ignition module. Heads are getting ported this winter. I have no idea what a stock Evo does.
I just rode up to the store a minute ago...damn that thing is quiet. Grrr.
I just rode up to the store a minute ago...damn that thing is quiet. Grrr.
Seasoned HDF Member
Joined: Mar 2012
Posts: 100,455
Likes: 19,811
From: Centennial, CO
I'm running the unwrapped straight through cheese grater baffles in my Longshots and it's still pretty loud. Loud enough for some of my biker buddys to tell me I need to put baffles in them, set off car alarms, make ladys swoon, etc. Those are pretty good numbers for an old EVO. And mine also runs a LOT better with the baffles.
Last edited by QC; Sep 21, 2013 at 05:43 PM.
Cruiser
Joined: Sep 2013
Posts: 159
Likes: 0
From: CNY
Had the same thing happen to my bike on Friday nite on the dyno lower tank bracket bolts fell out & the shiffter about fell off 3 mi. down the road ! My 92 dynoed out at 70.8 Hp and 78.9 Lb ft. of torque he did'nt push it to hard as it uses a ton of oil and coud'nt see a thing after 5800 r's . Bike has a S&S Super E and a Thunderheader other than that wo'nt know anything else till I tear it down 
in few months .
in few months .
Last edited by highbarst; Sep 21, 2013 at 05:56 PM.
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Thread Starter
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Road Warrior
Joined: Dec 2012
Posts: 1,690
Likes: 246
From: Lakeville, MN
god I'm glad I'm not the only rube out there that forgets to use blue Loctite. My shifter felt loose too! Better go check. This sucks!
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