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Author Topic: SE 120R Fullsac X Pipe dyno test!  (Read 6598 times)

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Fullsac Performance

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SE 120R Fullsac X Pipe dyno test!
« on: April 09, 2011, 11:55:57 AM »

Here is a 120R dyno chart sent to me from Al at Hot Rod Harley Davidsons, located in the great state of Michigan.
Al is a top notch service and dyno tech who I have worked with for a few years.

The 120R crate engine was installed in a customers 09 Street Glide with a Fullsac "B" X Pipe, Rinehart mufflers and HD Heavy Breather AC.
Typicall smooth X Pipe TQ curve with almost 1.1 HP per cube! Not bad for something that came from an HD catalog.
I'd really like to see one of these 120Rs with a little less compression, smaller cam profile, and the TQ line clearing 125 at 2500.
That would be a Touring motor.

Steve George
Fullsac Performance


timtoolman

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Re: SE 120R Fullsac X Pipe dyno test!
« Reply #1 on: April 10, 2011, 10:38:19 PM »

I want of them tooooooooo
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Dan_Lockwood

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Re: SE 120R Fullsac X Pipe dyno test!
« Reply #2 on: April 11, 2011, 03:01:36 PM »

Here is a 120R dyno chart sent to me from Al at Hot Rod Harley Davidsons, located in the great state of Michigan.
Al is a top notch service and dyno tech who I have worked with for a few years.

The 120R crate engine was installed in a customers 09 Street Glide with a Fullsac "B" X Pipe, Rinehart mufflers and HD Heavy Breather AC.
Typicall smooth X Pipe TQ curve with almost 1.1 HP per cube! Not bad for something that came from an HD catalog.
I'd really like to see one of these 120Rs with a little less compression, smaller cam profile, and the TQ line clearing 125 at 2500.
That would be a Touring motor.

Steve George
Fullsac Performance

 

Steve, that shows as run file .001.  Do you think he just put it up on the dyno and did one pull and that's what he got?

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Re: SE 120R Fullsac X Pipe dyno test!
« Reply #3 on: April 11, 2011, 03:05:19 PM »

Any thoughts on that low 2K torque dip?  I thought the other dyno sheet on 120R that was posted recently showed 100 ft/lbs torque at 2,000 on up with a nice straight curve. Just wondering what might be different? Thanks!
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Fullsac Performance

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Re: SE 120R Fullsac X Pipe dyno test!
« Reply #4 on: April 11, 2011, 03:57:42 PM »

 

Steve, that shows as run file .001.  Do you think he just put it up on the dyno and did one pull and that's what he got?


It does seem odd than it shows run 001. I'm sure this was the best run after quite a few dyno pulls.
Maybe he didn't want anyone to know how many pulls it took?

SG

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Re: SE 120R Fullsac X Pipe dyno test!
« Reply #5 on: April 11, 2011, 04:03:45 PM »

Any thoughts on that low 2K torque dip?  I thought the other dyno sheet on 120R that was posted recently showed 100 ft/lbs torque at 2,000 on up with a nice straight curve. Just wondering what might be different? Thanks!

I did not like the bottom of the tq curve either. Are the pipes/mufflers giving enough back pressure? What kind of compression does the motor have? Why smaller cam profile? Early intake would help right?
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Fullsac Performance

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Re: SE 120R Fullsac X Pipe dyno test!
« Reply #6 on: April 11, 2011, 04:09:25 PM »

Any thoughts on that low 2K torque dip?  I thought the other dyno sheet on 120R that was posted recently showed 100 ft/lbs torque at 2,000 on up with a nice straight curve. Just wondering what might be different? Thanks!
A slight take off dip is very common as the accelerator pump floods the motor for a second. I usually start my pulls at 1700 with a roll on
to try to get the fuel cleared out by 2000 rpm. With the huge cams in the 120R I'm surprised it as smooth as it is. Again, I would really like to see this
combo with a smaller cam to bring on the early TQ that is available with 120 CI motor. I've seen dynos from a 124" motor with my B X Pipe
that showed 143 peak TQ, 120 TQ at 2500 with 125 peak HP. That's a nice TQ curve for a Touring motor!

Steve George
Fullsac Performance

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Re: SE 120R Fullsac X Pipe dyno test!
« Reply #7 on: April 11, 2011, 04:21:03 PM »

I did not like the bottom of the tq curve either. Are the pipes/mufflers giving enough back pressure? What kind of compression does the motor have? Why smaller cam profile? Early intake would help right?
Rinehart mufflers? Cant say what size core it had. It needs 2.25 minimum. In this case, small cores will hurt the TQ.
The HD book says 10.5 comp with SE 266E cams. Those are monsters with a 58 deg closing. Really need about 11.5 and race gas to
even act alive on the bottom. For a Touring motor, all wrong. JMHO.

Steve George
Fullsac Performance

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Re: SE 120R Fullsac X Pipe dyno test!
« Reply #8 on: April 12, 2011, 12:44:47 PM »

Rinehart mufflers? Cant say what size core it had. It needs 2.25 minimum. In this case, small cores will hurt the TQ.
The HD book says 10.5 comp with SE 266E cams. Those are monsters with a 58 deg closing. Really need about 11.5 and race gas to
even act alive on the bottom. For a Touring motor, all wrong. JMHO.

Steve George
Fullsac Performance

Thanks for the response. I have seen the spec on those 266e and they are bit big and biased to the high rpm hp and not right on the big tourer. I would think the 10.5 comp is as much as you would want on a street bike running the average high test unleaded. I need to look at the header pipes and ask if there is a web site.?
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Re: SE 120R Fullsac X Pipe dyno test!
« Reply #9 on: April 12, 2011, 01:51:35 PM »

This bike is EFI, so there is no acc-pump.
The acc enrichment is very easy to tune in the EFI,
so personally I don't believe that is the reason for the dip.
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Re: SE 120R Fullsac X Pipe dyno test!
« Reply #10 on: April 12, 2011, 04:23:12 PM »

Thanks for the response. I have seen the spec on those 266e and they are bit big and biased to the high rpm hp and not right on the big tourer. I would think the 10.5 comp is as much as you would want on a street bike running the average high test unleaded. I need to look at the header pipes and ask if there is a web site.?

The Fullsac X Pipe can be seen at www.fullsac.com.

SG

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Re: SE 120R Fullsac X Pipe dyno test!
« Reply #11 on: April 12, 2011, 04:31:41 PM »

This bike is EFI, so there is no acc-pump.
The acc enrichment is very easy to tune in the EFI,
so personally I don't believe that is the reason for the dip.
Yes, it is EFI. It does have an accelerator pump or "accel enrichment" if you prefer.
Sorry to disagree, they are a pain in the ass if not impossible to make perfect everywhere at all throttle roll ons, especially if you have
big cams as noted in this engine. Again, JMHO.

Steve George
Fullsac Performance

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Re: SE 120R Fullsac X Pipe dyno test!
« Reply #12 on: April 13, 2011, 07:24:37 AM »

A slight take off dip is very common as the accelerator pump floods the motor for a second. I usually start my pulls at 1700 with a roll on
to try to get the fuel cleared out by 2000 rpm. With the huge cams in the 120R I'm surprised it as smooth as it is. Again, I would really like to see this
combo with a smaller cam to bring on the early TQ that is available with 120 CI motor. I've seen dynos from a 124" motor with my B X Pipe
that showed 143 peak TQ, 120 TQ at 2500 with 125 peak HP. That's a nice TQ curve for a Touring motor!

Steve George
Fullsac Performance

I agree with Steve.
I doubt if the pipe is really responsible for anything, coming off the bottom.
Those 120's need a tune-up in the cam dept., or more compression to support that late-blooming 266.
Scott
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Re: Re: Re: SE 120R Fullsac X Pipe dyno test!
« Reply #13 on: November 04, 2011, 10:08:03 AM »

Here is a 120R dyno chart sent to me from Al at Hot Rod Harley Davidsons, located in the great state of Michigan.
Al is a top notch service and dyno tech who I have worked with for a few years.

The 120R crate engine was installed in a customers 09 Street Glide with a Fullsac "B" X Pipe, Rinehart mufflers and HD Heavy Breather AC.
Typicall smooth X Pipe TQ curve with almost 1.1 HP per cube! Not bad for something that came from an HD catalog.
I'd really like to see one of these 120Rs with a little less compression, smaller cam profile, and the TQ line clearing 125 at 2500.
That would be a Touring motor.

Steve George
Fullsac Performance

Steve,
Do you know if the stock 50mm TB was used or did they go with a larger one?
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Re: SE 120R Fullsac X Pipe dyno test!
« Reply #14 on: November 04, 2011, 11:43:12 AM »

My wife and I have unfortunately became unemployed earlier this year. You know, economy etc...

Since I have nothing but time on my hands now I would be more than willing to "test out" a new 120R on my 2011 CVO Street Glide and provide the results back to this forum on a daily basis. If anyone wants to send me a new 120R I will install it and begin the results feedback. If you can't send it I will be more than willing to come and pick it up.

 ;D
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