Building the Build

[Alkire193]

Ok digging into these forums and reading a lot on everyones builds. But I just wanted a spot check on my build that im shooting for. Im learning as I go and the money is starting to pour into the motor thanks to everyone making me jealous with their 65-70+ 

I have :

Hot Cam Stage 2
104 octane fuel
k&n intake with no airbox
fmf header w/ TBR pipe
PCIII

Which makes 36whp and 38 tq on the dyno ( yea......it sucks)

Im gonna buy :

CP piston 12.5:1 102mm std bore
+2 TB upgrade at KDS, shipping tomarrow or wednesday
x-4 cam that is F/S on here right now! 


(hopefully just to get the power back I lost on the dyno with the stock piston)

What im thinking about :

dynatek ignition (non programmable)
+5 stroke crank



Anyone have some input?

[air]

The octane of the fuel is costing you HP for starters.
I would go with a TQS Tech 11.5:1 piston, with a stroker crank it will get you near the 12.5:1.
Go with a programmable ignition  you are leaving HP on the table by not adjusting the timing to your build.
The rockers and Head have to be clearanced for the Cam and you need stiffer valve springs.
Port work is where the real HP is made and there are several ways to go  there.
I can get port work done for a reasonable price with great results.
KBR, Racers Edge, and others offer porting services also

[NeverEnough]

I would drop the 104 octane if your stock compression. The +5 stroke is extremly nice, but i would have it balanced if i did it again. It runs great, and has great power everywhere, it just vibrates pretty good, but nothin bad. If you dont mind running the 104 octane, i would go with somthin in the mid 11 range. Steve at TQS has a 11.5:1 piston that looks really nice, and if you do the stroker(which i would), the stroke will put you in the 12 range. I also wouldnt skimp on the head, that is where you can make major power. I know on 450s, head work makes the motor, and raptors are about the same. Kenny has a great deal on CNC stock valve head i saw, and stock valve will be plenty for that engine.

Brent

[1badazz_700r]

sounds good so far except balancing the crank. I just put one in mine and it actual took vibration away compared to the stock crank.Therace fuel isfor sure costing H.P

[Krandall]

If you have no problem running higher octane gas. I would bump up the compression. Just remember like Air said, w/ the +5 Stroker crank it'll bump your compression up .5-1 compression points.

[1badazz_700r]

the +5 crank will actually increase the compression by .7 from what troy and kenny told me 

[PDX Raptor]

First thing I would do is change the exhaust to a big single or duals.Second get an ignition for longer power band to take advantage of your cam. Third get the head ported. As mention earlier you need to have the rockers cleared anyway and you will see good power gains from a good flowing head. 12.5:1 with a +5 crank sounds a little high for 104oct. Go to 110oct or like mentioned earlier go with an 11:1 or 11:5 piston. Some other things that are not a must, but could be helpful would be a better intake and a longer swing arm.

[Alkire193]

Stock compression is 11.1:1 correct? .7 increase puts me close to 12:1 with the stroker. Lost out on the x-4, bummer. But heres what im pulling from you guys, which thank you ALL for your input!

+5 balanced crank for stroke
Larger cam, X7 probably
Porting, valve springs and increase clearance ( prolly KDS, I love what they do with the +2 and +3 TB's)
12:1 piston or 11.5:1 (still kinda confused)
+2 TB tomorrow its shipping to KDS
Dynatek non programmable ignition

Id rather not run the 104 anymore, mixing fuel sucks but 100 or 104 is totally ok, whichever works better with the compression.


please dont convince me to buy duals, they are expensive and 630 plus all the other work is gonna add up over my budget for the season. Gotta pay to play I know but ive got a decent exhaust with the FMF header and TBR pipe I think.

[Colorado700R]

stock in 9.2-1 compression

[Alkire193]

stock in 9.2-1 compression

I really suck at this, 

[Colorado700R]

everyone starts somewhere bro, just keep asking questions.  You're in the right place for good info

[Jay@RacersEdge]

You can get a stock bore/stroke bike with head work for a reasonable price that will get you that 70hp or more

My recommendation would be the following and the best bang for the buck

You already have the PCIII and the TB coming so you're good there

Our CNC head +1 ferrea valves and springs (actually having a special on that now reg $906 until 15th of next month only $725)

Web 4 or x-4 cam

12.5:1 CP piston will be fine on 104oct

Dynatek Pragrammable

FCI intake

If you have any questons please feel free to call

[MAN]

You can get a stock bore/stroke bike with head work for a reasonable price that will get you that 70hp or more

My recommendation would be the following and the best bang for the buck

You already have the PCIII and the TB coming so you're good there

Our CNC head +1 ferrea valves and springs (actually having a special on that now reg $906 until 15th of next month only $725)

Web 4 or x-4 cam

12.5:1 CP piston will be fine on 104oct

Dynatek Pragrammable

FCI intake

If you have any questons please feel free to call

+1
Jay will hook you up... 

[Alkire193]

I was on TQS and confused, the megacycle x-4 said core charge like they modify the stock cam to their specs. That might not be so bad.
They also sell CP pistons at 12.5:1 so thats a plus
AND the dynatek ignition (programmable), but it says you should be a little more experienced to use it, im technically inclined but very new to "dyno air/fuel compression ratio tq curve cam retardation" stuff so how would i program it?

Also, im seeing a lot of scattered opinions of Wiseco, Hot Cam and JE products. Finally settled on a CP piston but the brand of crank im stil weary on

[Colorado700R]

barkers makes a good crank, so does hotrod.