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New Build, power spitball estimates......

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Old Nov 6, 2019 | 09:06 PM
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Default New Build, power spitball estimates......
Hey folks, got a new build in the works. Was wondering if anyone was willing to put out some HP and Torque estimates. I will be able to confirm the output once i get it tuned up, but i kinda wanted to hear what you all thing it might do, so here's the list.
hybrid timken style 02 engine cases...left side timken from 01, right side 20-03??
4.375 stroker crank with 3.937 bore, CP10.75-1 pistons, so 107
VeeTwin Racing Stage 2 heads, 06 later casting,(Kirby's stuff has worked outgreat for me so far!!)w/compression releases
50mm SE cable throttle body with 4.9 injectors
Tman625 cams
Old School White Bro's E-pipe
SS teardrop AC, slotted cover
tuned with Powervision on my in house dyno,by me.

ok, so what do you think it will do?
m
ps A motor going in a bagger
 
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Old Nov 6, 2019 | 11:02 PM
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I am thinking the numbers might be close to square and HP might be higher than TQ; it will depend on the tune. I believe 120TQ/125HP is possible; certainly in that neighborhood.
 
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Old Nov 7, 2019 | 05:49 AM
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id do a 55mm t body at least,58mm would be better
 
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Old Nov 7, 2019 | 06:40 AM
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I did a 107 in a 2011 softail a couple of years ago but with Kirby's 110 heads

Attachment 613932

Traditionally the A motors do a bit better without having to drag the balance shafts around and if I remember right we are at only 10.5:1 on this one, your pipe is more tunable than mine so I would expect you to do a bit better than this one
 
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Old Nov 7, 2019 | 06:42 AM
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General question:

Wouldn`t an "oversquare" 107 " (4.125 X 4) spin up quicker ?
 
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Old Nov 7, 2019 | 09:39 AM
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With the 50mm I'd guess 115HP/120TQ I have a very similar build.
 
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Old Nov 7, 2019 | 10:28 AM
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120-125 TQ and 120 HP
 
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Old Nov 8, 2019 | 08:03 AM
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thanks for the responses so far i'm still getting parts together, but when i get it assembled and installed, i'll report back with the results. please feel free to keep adding to the list.
m
 
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Old Nov 11, 2019 | 10:56 PM
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Originally Posted by eighteight
General question:

Wouldn`t an "oversquare" 107 " (4.125 X 4) spin up quicker ?
No. Flywheel mass is typically the same..
 
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Old Nov 26, 2019 | 08:48 PM
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The assembled crank and cases are back, heads and cylinders on the way to kirby, cams and throttlebody, and wiring stuff is all here. Will report when assembled and tuned.m
 
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