120-130hp

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Dec 13, 2008 | 04:24 PM

#11

big cahuna

Grand HDF Member

Joined: Mar 2007

Posts: 4,922

Likes: 265

From: Deep in the heart of New Jersey

Item number 270316954025 on ebay. 127 cu in ultima motor with the hp numbers your lookin for. just drop it in and go. for less money then you were planing to spend.,,

Dec 13, 2008 | 05:09 PM

#12

NTrat

Banned

Joined: Oct 2008

Posts: 164

Likes: 0

From: Hollis

Quote:

Originally Posted by ledfoot

i have an 07 nitetrain some mods, 86hp,112lbs. tq . i was hoping someone would know what it would take to get in hte 120-130hp range, i want to stay with the 4 3/8 stroke crank, any help would be great, thanks

Do you spend most of your time OVER 5000-6000rpms? People who worry about peak hp numbers either want a dyno queen or spend most of their time over the above mention'd rpms.

I would think for a street engine you would be more worried about the horsepower #'s in the lower rpm range that lead up to the upper rpm band.............

Dec 14, 2008 | 02:16 AM

#13

Bigbluefatboy

Advanced

Joined: Dec 2008

Posts: 80

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Buy a jims 120" THAT will do the trick for ya.
Or if you know someone you can get really close to that with a fully built 107"

Dec 14, 2008 | 07:01 AM

#14

Hillsidecycle.com

Sponsor

Joined: Dec 2007

Posts: 12,084

Likes: 829

Power

Last 107" drop-on we did was 119 hp and 124 ft/lbs. Wood 8, 51 mm HPI, D&D, our headwork.
Last 120" Ultima was banging on the 130 hp door with just around 150 ft/lbs. Wood 9B, S&S G/bored t/jetted, our headwork, Rineharts. Would've shown more with 2/1.
Scott

Dec 14, 2008 | 11:07 AM

#15

SEDELUXE

Road Warrior

Joined: Dec 2007

Posts: 1,270

Likes: 0

Quote:

Originally Posted by skyhook

here's what I'd do...bore your cylinders to 3&15/16...forged 106.5" flattops...s.e. clutch spring...ported stock heads with 1.94 and 1.63 valves...or raised port cast heads...aftermarket throttle body and big injectors...good long cam with about .600 lift and 260 duration...don't want to recommend vendors/builders on the open forum, but if you'd like to send me a private message...

thats an R&R build there. Daves got one in the shop now.
just tuned a tw6gh build with a fat cat <Bailsey super street heads 95ci 10.2 compression . 115tq uncorrected 108 tq sae. compression is low as per customers recomendation as a few other things but cant say. bike rips
sure could of gotton more out of it with more compression but this build is real nice.
customer will be going bigger next year and so the heads are bigger .
i have some dyno sheets i will be posting with comparsion to a few sponsors builds. you can make your own determination.

Dec 14, 2008 | 11:21 AM

#16

lkr0

Elite HDF Member

Joined: Nov 2006

Posts: 3,647

Likes: 11

From: Stockbridge, GA (Atlanta)

how reliable are Ultima Motors?

Quote:

Originally Posted by big cahuna

Item number 270316954025 on ebay. 127 cu in ultima motor with the hp numbers your lookin for. just drop it in and go. for less money then you were planing to spend.,,

Dec 14, 2008 | 01:44 PM

#17

Kingofcubes

Road Master

Joined: May 2007

Posts: 851

Likes: 5

From: Mitchellville, Ia.

R&R Stage 5

The Stage 5 R&R kit (heads) will get you there with quick, smooth power with 103" but you an go to 107 for 4-5 clicks more power, same $. The great thing is that they are cnc ported carbon units that have the core shift taken out them.