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[jimp]

Want are the required modification to pull one hundred and twenty hp out of a 103 SE motor?

[OTIS]

Want are the required modification to pull one hundred and twenty hp out of a 103 SE motor?

Probably seven thousand dollars

                                         OTIS [smiley=xyxthumbs.gif]

[jimp]

Probably seven thousand dollars

                                    

[OTIS]

So Otis your saying 7K to gain 20hp considering that you already have 100 hp with a good tune on a stocker with aftermarket exhaust and a SERT.

Not kidding  20    more   hp is hard to get when you have 100 already you need to tear the motor down and start over because you are at a point I call diminishing returns spend a lot to get a little.Shrader a member of this site spent 1400$ on heads 270$ pistons 120$push rods cams270$ Big sucker air cleaner200$
Misc.studs gaskets 150$ Rineharts 900$ labor700$ if lucky and a clutch that will take it that got Shrader a true 113 HPyou may not get 120 with 7K and 103.
I forgot 800$ HP INC FUEL INJ.
                                  OTIS

[SHRADER]

Not kidding

[Grover]

jimp,
  Are you talking rear wheel hp or Engine hp(at the crank)?
My previous 103 build had 117hp/114tq with all SE parts. But since then it blew the crank bearing. That was with the SE 258 cams. I would have been at least 120 with a geardrive set-up.
If you are going for bigger hp gains, make sure to upgrade the flywheel bearings.

[SHRADER]

jimp,
 

[Grover]

jimp,

  Also every dyno and tuner will show different #'s on the same engine at different times. Run thinner oil, cooler intake air, and higher rear tire preassure. That will shoot up your dyno sheet for more impressive bragging rights.

[SHRADER]

jimp,

 

[fatboyse2]

I've managed to put a few freezing cold miles [smiley=nervous.gif] on my bike since the SE everything build was finished before the holidays and am looking to do a full dyno tune after I get a couple hundred miles on it.  No extra tire preasure or thinner oil.  Racetuner CD was version E (latest out) and had a close build to mine (except for the heads/pistons which were 103+ in the download Vs the CNC heads and htcc pistons I chose) and I'm using a thunderheader Vs the SE 2 into 1 the download had.  It runs great with this library download, but I suspect I can fine tune a bit more out of it since I've got the ported heads and best exhaust...  I'm expecting 110hp [smiley=xyxthumbs.gif]  The SE parts catalog page 27 lower right hand corner shows the graph at about 104hp with the 103+ heads/pistons.

120hp may be an un-ride-able dream.

[OTIS]

I've managed to put a few freezing cold miles [smiley=nervous.gif] on my bike since the SE everything build was finished before the holidays and am looking to do a full dyno tune after I get a couple hundred miles on it.

[Grover]

OTIS,

  My 103 mods where the same as Schraders except I put on the D&D Borezilla 2:1. My dealer gave me cost on all SE products. They also ate the labor, because the motor blew the crank bearing. So it was under warranty.  

[fatboyse2]

If I back out all the shiny chromey bits and just talk engine about 4.5 installed.  My dealer gave a 20% parts discount which was great.  Yep, I'm broke now.

[jimp]

So how about the stock heads, the 120 can't be accomplished using them?

[BLM777]

So how about the stock heads, the 120 can't be accomplished using them?

If you just drop off the bike and a couple of hundred bucks next time I've got the dyno available to me, I'll get you a sheet with 120 plus....no need for any mods...
 [smiley=huepfenjump3.gif]