Disapointed Dyno #'s
Thread Starter
|
Cruiser
Joined: Mar 2007
Posts: 228
Likes: 0
From: i live outside Omaha Ne on the Iowa side in the Loes hills, some great places to ride
Disapointed Dyno #'s
guys i listened well, paid the money out. and don't think i have very good results.
i have a 2007 SG had 103 big bore kits with SE 10.5-1 pistons, SE CNC heads , SERT, Reinhart true duals, and just before dyno had TW-400 cams installed. was hoping for 100 + HP
got 97 HP and 103 TQ.
does my tuner have a conservative dyno?
Do i not have a good tuner?
or do just a select few get over 100?
i have a 2007 SG had 103 big bore kits with SE 10.5-1 pistons, SE CNC heads , SERT, Reinhart true duals, and just before dyno had TW-400 cams installed. was hoping for 100 + HP
got 97 HP and 103 TQ.
does my tuner have a conservative dyno?
Do i not have a good tuner?
or do just a select few get over 100?
Advanced
Joined: May 2007
Posts: 86
Likes: 0
From:
RE: Disapointed Dyno #'s
NO you should be over 100 on both #'s
Aside from the numbers are you happy with how the bike runs??
Dyno's seem to vary a great deal?? It seems that how it reads out depends a lot on the operator?
I had mine done 3 times over three years and got a different reading everytime?
I just posted a thread here for the first time tonight....I have a 95" and I'm getting 100 & 100 or so the machine says? I lost the crankdue to a cam chain tensioner failure so I'm thinking of bumping it up but I'm not sure it's worth the $2K for 6 or 7 hp?
Aside from the numbers are you happy with how the bike runs??
Dyno's seem to vary a great deal?? It seems that how it reads out depends a lot on the operator?
I had mine done 3 times over three years and got a different reading everytime?
I just posted a thread here for the first time tonight....I have a 95" and I'm getting 100 & 100 or so the machine says? I lost the crankdue to a cam chain tensioner failure so I'm thinking of bumping it up but I'm not sure it's worth the $2K for 6 or 7 hp?
Outstanding HDF Member
Joined: Apr 2007
Posts: 2,046
Likes: 1
From: Canada
RE: Disapointed Dyno #'s
I know there are others here on the board that have SE 103" setups that have seen 115/115 from a good build and solid tune, butnote that SE has a few head castings to choose from and some flow better than others, especially with domed pistons. Exhaust is another culprit that robs both torque and power. Many people go and get into a decent build only to give up as much as 6% to 8% by using true duals over a 2 into 1 pipe. If you really want every ounce of power out of your build, buy a D&D Fat Cat and tune your bike with a Daytona Twin Tec or Thundermax Tuner. That will wake it up and is much better than a mediocre tune using a SERT. Just some food for thought!
Seasoned HDF Member
Joined: Dec 2005
Posts: 5,462
Likes: 619
RE: Disapointed Dyno #'s
Have you tested your ccp? If not, I would get a compression tester and check it out. I have heard of people finding the '07's have the pistons down the hole quite a bit. If your builder did not attempt to get the squish set right, you are probably not running the compression you think. This would lead to lower than expected numbers. You would need to trim the bottom of the cylinders to get the piston to a zero deck height and then use a .030 - .040 head gasket for ideal squish.
Your AFR on your dyno sheet could probably be better. I would think your parts combo would have given higher numbers. Putting a 2-1 pipe on would probably get your numbers a little higher, but I think there is other issues going on. Check your ccp and report back. There is lots of good help here.
Your AFR on your dyno sheet could probably be better. I would think your parts combo would have given higher numbers. Putting a 2-1 pipe on would probably get your numbers a little higher, but I think there is other issues going on. Check your ccp and report back. There is lots of good help here.
Thread Starter
|
Cruiser
Joined: Mar 2007
Posts: 228
Likes: 0
From: i live outside Omaha Ne on the Iowa side in the Loes hills, some great places to ride
RE: Disapointed Dyno #'s
so what you are saying Biggzed is to check the compression pressure?
i need to take out both spark plugs and test one cylinder and then the other right?
i need to take out both spark plugs and test one cylinder and then the other right?
Elite HDF Member
Joined: Mar 2006
Posts: 4,722
Likes: 5
From: Biddeford, Maine
RE: Disapointed Dyno #'s
ORIGINAL: truegentlemann
guys i listened well, paid the money out. and don't think i have very good results.
i have a 2007 SG had 103 big bore kits with SE 10.5-1 pistons, SE CNC heads , SERT, Reinhart true duals, and just before dyno had TW-400 cams installed. was hoping for 100 + HP
got 97 HP and 103 TQ.
does my tuner have a conservative dyno?
Do i not have a good tuner?
or do just a select few get over 100?
guys i listened well, paid the money out. and don't think i have very good results.
i have a 2007 SG had 103 big bore kits with SE 10.5-1 pistons, SE CNC heads , SERT, Reinhart true duals, and just before dyno had TW-400 cams installed. was hoping for 100 + HP
got 97 HP and 103 TQ.
does my tuner have a conservative dyno?
Do i not have a good tuner?
or do just a select few get over 100?
Steve
The Schlong Man
Joined: Mar 2007
Posts: 3,772
Likes: 4
From: Nantucket
RE: Disapointed Dyno #'s
Well go find a dyno that will give you the numbers that will make you happy. Like has been said before dynos vary greatly from one to another. I'm not sure how you would know which one or if any of them are truely accurate. It shouldn't really matter anyway.The only thing adyno is good for is to measure a starting point and test for better or worse results depending on parts added and removed and tuning adjustments. Dyno numbers are onlymeaningful relative to subsequent number given by that same dyno.
Trending Topics
Seasoned HDF Member
Joined: Dec 2005
Posts: 5,462
Likes: 619
RE: Disapointed Dyno #'s
ORIGINAL: truegentlemann
so what you are saying Biggzed is to check the compression pressure?
i need to take out both spark plugs and test one cylinder and then the other right?
so what you are saying Biggzed is to check the compression pressure?
i need to take out both spark plugs and test one cylinder and then the other right?
I would agree with Maine Ultra that your heads could be holding you back, but without knowing if your compression is optimized for your cams I wouldn't start swapping parts. A test is cheap and easy to do.
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Thread Starter
|
Cruiser
Joined: Mar 2007
Posts: 228
Likes: 0
From: i live outside Omaha Ne on the Iowa side in the Loes hills, some great places to ride
RE: Disapointed Dyno #'s
OK we all have busy lives so this took me some time.
i rounded up a compression tester, and did the test.
i got 170 on the rear cylinder and 170-175 on the front cylinder.
16925-02B is the cylinder head part # from Harley Davidson
so now what?
i rounded up a compression tester, and did the test.
i got 170 on the rear cylinder and 170-175 on the front cylinder.
16925-02B is the cylinder head part # from Harley Davidson
so now what?
Seasoned HDF Member
Joined: Dec 2005
Posts: 5,462
Likes: 619
RE: Disapointed Dyno #'s
ORIGINAL: truegentlemann
OK we all have busy lives so this took me some time.
i rounded up a compression tester, and did the test.
i got 170 on the rear cylinder and 170-175 on the front cylinder.
16925-02B is the cylinder head part # from Harley Davidson
so now what?
OK we all have busy lives so this took me some time.
i rounded up a compression tester, and did the test.
i got 170 on the rear cylinder and 170-175 on the front cylinder.
16925-02B is the cylinder head part # from Harley Davidson
so now what?