Engine Build Time
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Elite HDF Member
Joined: Sep 2012
Posts: 3,791
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From: N Texas
Allan don't mean to sound like a A$$to you but the rear pulley and the exhaust is not going to get you at 120 square . save your money on the exhaust your concerned area is the heads. with a 1.900 intake and 1.575 exhaust your engine will not get the cylinder fill to produce those kind of numbers that u were looking for period. and as for as the exhaust J Pace has a hillside 107 with there stage 4 heads. cams are very similar and throttle body the same and he is running the same bassani exhaust with 130hp/129 tq so that exhaust is very capable of producing good numbers.
The rear pulley swap is just gearing upgrade, not related to improving my engine build.
Last edited by HD Pilot; Apr 5, 2014 at 10:57 AM.
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Elite HDF Member
Joined: Sep 2012
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From: N Texas
I think you are locking in on my comment about Steve thinking I could get 120 torque not 120 square
I would really like to look at that dyno of J Pace, is it posted anywhere?
I would really like to look at that dyno of J Pace, is it posted anywhere?
Last edited by HD Pilot; Apr 5, 2014 at 11:04 AM.
Stellar HDF Member
Joined: Jan 2013
Posts: 2,464
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From: Rouses Point, N.Y.
doesn't steve have different exhaust at the shop? last time I talked to him he said he did. he was going to loan me a fatcat but said it was on a bike at the time and when it came back just send him a deposit and I could try it and return it get my money back. if he still has that fatcat throw it on and re run it. u might get 5 hp gain. worth the try than u would know. with shorter pipes you loose tq but as the rpms climb the hp usually goes up .But I believe your heads are your pinch point right now.
Stellar HDF Member
Joined: Jan 2013
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From: Rouses Point, N.Y.
my build is very close to his build, cams a tad bigger and the new heads Scott is doing are flowing more cfms. several of these builds are in different states now producing same numbers as jpace's not sure of his dyno sheet send him a pm.
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Elite HDF Member
Joined: Sep 2012
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From: N Texas
That is interesting, will talk to him more on Tuesday. He was talking to me about the Rush 2 into 1 but the few pics I have seen... don't think so, looks has to count too - maybe for a bagger not a clean dyna. Right now I like the Fat Cat and maybe the Supertrapp/Supermeg, just in the early thinking process, will be watching out for a bargain.
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120 square from a 107" surrounded by your existing component parts is a walk-in-the park, hands down, no questions asked whatsoever...........................IF, IF, the heads are doing their job.
A PA-based tuning outfit that is no longer in business, tuned one of our 98"ers, several years ago, with a Wood 8/55HPI/Fatcat/our Gen I Stage IV Heads........in tame form it was tapping on 120 hp, SAE..............after he had ridden it to Sturgis and back from Eastern PA, just for example.
You gotta' have that cylinder fill happening in order for it to produce......but then, we had discussed that when you had stopped by a few years back........
gsxrboy96, here, on this message board has an 80" Evo, we did the heads for, that went 103 hp on a dyno in Missouri, and once again, the cylinder heads move the proper air, from .100" of valve lift all the way past the cams peak lift and more.
Good luck in your search.
Scott
A PA-based tuning outfit that is no longer in business, tuned one of our 98"ers, several years ago, with a Wood 8/55HPI/Fatcat/our Gen I Stage IV Heads........in tame form it was tapping on 120 hp, SAE..............after he had ridden it to Sturgis and back from Eastern PA, just for example.
You gotta' have that cylinder fill happening in order for it to produce......but then, we had discussed that when you had stopped by a few years back........
gsxrboy96, here, on this message board has an 80" Evo, we did the heads for, that went 103 hp on a dyno in Missouri, and once again, the cylinder heads move the proper air, from .100" of valve lift all the way past the cams peak lift and more.
Good luck in your search.
Scott
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Elite HDF Member
Joined: Sep 2012
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From: N Texas
Scott, everybody knows you put out a good product but your willingness to rub somebody wrong turned me off early. You remind me of Howard at Motorcycle Metal, great Harley guru but not the type I care to do business with.
Grand HDF Member
Joined: Sep 2010
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From: Illinois
No of course not but it may do better than the bassini not sure if the gain is worth the extra $700+ of the pipe....
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I agree that the Bassani 1D5250 is not one of the best pipes as far as performance is concerned. I mainly bought it because I liked the look and no one else was running it at the time. But I also thought I would gain some power and torque over the Martin Bros. pipes I was running after my engine build. I thought this because the Martin Bros pipes were basically 1 3/4" drag pipes, although they did have some sort of crossover chamber near the end and the Bassani, although short, was a 2 into 1 pipe. As you can see by the Dyno sheets I did gain some HP (up to 130 from 124), peak torque was about the same (129). And yes, I know these are uncorrected numbers, SAE numbers are about 5% lower. But if you look at the charts the curves are way different. Some of that dip in the middle of the Bassani chart was tuned out, but the "drag" pipes were actually better on the bottom end torque than the 2 into 1 (opposite of what you usually hear). I attribute this to the short, unequal length primaries and wide open design of the Bassani, offering little back pressure, and the smaller diameter of the Martin Bros pipes, which I was running BCT baffles in. I later put a DK customs thunder torque baffle in the end of the Bassani and it made a noticeable difference in the low end response. In the end the Bassani still came out on top for HP and matched the peak TQ if we're only talking about numbers, so I have to agree with Target and Scott that the heads are the pinch point in the equation, not the pipe. First chart is with Martin Bros pipes, second Bassani.
Last edited by jpace024; Apr 5, 2014 at 02:46 PM.
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"Treat me nice, I'll treat you better, treat me bad, I'll treat you worse", is a phase that I stongly adhere to in life, and also on these message boards when folks start flexing their cyber-muscles, throwing mud in our direction,(behind the scenes, or on an open forum) and if that falls into the catagory of rubbing someone the wrong way, then so be it, and I stand acused.
Have a wonderful day, and once again, good luck with all your motorcycle endeavors.
Carry on.