Dyno numbers....and a lesson learned
#1
08-25-2006, 11:40 PM
Dyno numbers....and a lesson learned
I got my bike back a little while ago. Numbers were good, but a little dissappointing. As you may know, I had this same combination in my '06 roadie that I just rid myself of. The roadie had VH exhaust while the ultra has rineharts. The roadie made a tad more torque, but the ultra made more horsepower. When I asked the dyno guy why I had such a dip in the torque at the bottom, he said "Rineharts". But, on a better note, he knows that I am going to have some head work done, and made the comment that the more I do to the engines performance, the better the rineharts will work. He informed me that even the 124 inch builds that he does, for the most part, run rineharts, and they work nicely. He also said thet installing rineharts on a stock bike is an injustice. They are "Too much pipe for a stock engine" I hate to say it, but the dyno chart backs him up. Anyway, the numbers are below.....have to run by the dyno shop in the morning to get a printout ( printer was on the blink ) Now I REALLY cant wait to get my heads done!
nogood o~`o
nogood o~`o
#2
08-25-2006, 11:43 PM
Tourer
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#3
08-27-2006, 07:34 PM
Elite HDF Member
RE: Dyno numbers....and a lesson learned
ORIGINAL: wnogood
I got my bike back a little while ago. Numbers were good, but a little dissappointing. As you may know, I had this same combination in my '06 roadie that I just rid myself of. The roadie had VH exhaust while the ultra has rineharts. The roadie made a tad more torque, but the ultra made more horsepower. When I asked the dyno guy why I had such a dip in the torque at the bottom, he said "Rineharts". But, on a better note, he knows that I am going to have some head work done, and made the comment that the more I do to the engines performance, the better the rineharts will work. He informed me that even the 124 inch builds that he does, for the most part, run rineharts, and they work nicely. He also said thet installing rineharts on a stock bike is an injustice. They are "Too much pipe for a stock engine" I hate to say it, but the dyno chart backs him up. Anyway, the numbers are below.....have to run by the dyno shop in the morning to get a printout ( printer was on the blink ) Now I REALLY cant wait to get my heads done!
nogood o~`o
I got my bike back a little while ago. Numbers were good, but a little dissappointing. As you may know, I had this same combination in my '06 roadie that I just rid myself of. The roadie had VH exhaust while the ultra has rineharts. The roadie made a tad more torque, but the ultra made more horsepower. When I asked the dyno guy why I had such a dip in the torque at the bottom, he said "Rineharts". But, on a better note, he knows that I am going to have some head work done, and made the comment that the more I do to the engines performance, the better the rineharts will work. He informed me that even the 124 inch builds that he does, for the most part, run rineharts, and they work nicely. He also said thet installing rineharts on a stock bike is an injustice. They are "Too much pipe for a stock engine" I hate to say it, but the dyno chart backs him up. Anyway, the numbers are below.....have to run by the dyno shop in the morning to get a printout ( printer was on the blink ) Now I REALLY cant wait to get my heads done!
nogood o~`o
If you want better torque (which we all do), get the 2" quiet baffles for the Rineharts. They will provide more backpressure which inturn gives better torque.
Steve
#4
08-27-2006, 07:45 PM
#5
08-27-2006, 07:52 PM
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#6
08-27-2006, 08:59 PM
RE: Dyno numbers....and a lesson learned
Here is the dyno sheet. Like I said, not really what I expected, but still good. More compression and better flow in the heads should bring the bottom up. The red lines are before the cam install, and on a downloaded map from the dynojet site. The blue lines are after cams and advanced map.
#7
08-27-2006, 09:15 PM
Elite HDF Member
RE: Dyno numbers....and a lesson learned
ORIGINAL: gunrunner
Another thing, those true dual pipes rob torque too, its not rocket science, less back pressure less torque, louder it is less torque you have. You want gut ripping torque, a true 2 into 1 setup has been proven hands down the best system to use.
Another thing, those true dual pipes rob torque too, its not rocket science, less back pressure less torque, louder it is less torque you have. You want gut ripping torque, a true 2 into 1 setup has been proven hands down the best system to use.
I had my bike dynoed earlier this year with the new '06 Rinehart true duals, and there was no torque dip at all. It was a nice curve with no dips and he power coming on steady from 2500.
Then he showed me a dyno sheet for a Thunderheader 2-1 from my buddy's bike, stage 1, and it had a huge torque dip in the low end, and then made the same peak numbers as my Rineharts.....only higher up in the powerband and coming on around 3000.
It looks as though the new Rineharts have fixed the torque dip troubles that they had in the past.
Steve
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#8
08-27-2006, 10:35 PM
RE: Dyno numbers....and a lesson learned
ORIGINAL: maineultraclassic
I go against that thought process with dyno runs that show it.
I had my bike dynoed earlier this year with the new '06 Rinehart true duals, and there was no torque dip at all. It was a nice curve with no dips and he power coming on steady from 2500.
Then he showed me a dyno sheet for a Thunderheader 2-1 from my buddy's bike, stage 1, and it had a huge torque dip in the low end, and then made the same peak numbers as my Rineharts.....only higher up in the powerband and coming on around 3000.
It looks as though the new Rineharts have fixed the torque dip troubles that they had in the past.
Steve
ORIGINAL: gunrunner
Another thing, those true dual pipes rob torque too, its not rocket science, less back pressure less torque, louder it is less torque you have. You want gut ripping torque, a true 2 into 1 setup has been proven hands down the best system to use.
Another thing, those true dual pipes rob torque too, its not rocket science, less back pressure less torque, louder it is less torque you have. You want gut ripping torque, a true 2 into 1 setup has been proven hands down the best system to use.
I had my bike dynoed earlier this year with the new '06 Rinehart true duals, and there was no torque dip at all. It was a nice curve with no dips and he power coming on steady from 2500.
Then he showed me a dyno sheet for a Thunderheader 2-1 from my buddy's bike, stage 1, and it had a huge torque dip in the low end, and then made the same peak numbers as my Rineharts.....only higher up in the powerband and coming on around 3000.
It looks as though the new Rineharts have fixed the torque dip troubles that they had in the past.
Steve
nogood o~`o
#9
08-27-2006, 10:36 PM
#10
08-27-2006, 10:40 PM
Elite HDF Member
RE: Dyno numbers....and a lesson learned
ORIGINAL: wnogood
Steve, can you post your dyno sheet here? I would really like to see it. i searched for it the other day with no avail...
nogood o~`o
Steve, can you post your dyno sheet here? I would really like to see it. i searched for it the other day with no avail...
nogood o~`o
Basic tuning done, but the AFR was too lean for me. He played with it a bit, but the numbers didn't change much.
After I do my winter build, I'll pay the big dollars and get a full custom map made.
Steve