Piston, Cam, Head Porting - Yamaha Raptor Forum
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post #1 of 22 (permalink) Old 07-25-2007, 11:12 PM Thread Starter
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Piston, Cam, Head Porting

yeah so i've been thinking about trying to do all of this or at least some of it, so can anyone tell me where is the best place to do this, and should i take the head off myself or take it to a professional? or what, i have about $700 to dump into this bad boy, so let me know what you guys recomend, i curently have DMC duals, PCIII, and have a trenity racing intake coming for it, what else should i do? and if i get a new piston and cam, what all will i have to rebuild when i burn it up?

<br /><br />DMC Duals, PCIII, Trinity Racing Intake
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post #2 of 22 (permalink) Old 07-25-2007, 11:17 PM
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Re: Piston, Cam, Head Porting

if u burn it up you'll have to buy a new quad
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post #3 of 22 (permalink) Old 07-25-2007, 11:17 PM Thread Starter
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Re: Piston, Cam, Head Porting

trinity racing big bore is 619, should i go wit that? idk i'm lost, if i were to get that do i have to get my head ported? and is there a map for the PCIII for my mods?

<br /><br />DMC Duals, PCIII, Trinity Racing Intake
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post #4 of 22 (permalink) Old 07-26-2007, 10:35 AM Thread Starter
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Re: Piston, Cam, Head Porting


<br /><br />DMC Duals, PCIII, Trinity Racing Intake
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post #5 of 22 (permalink) Old 07-26-2007, 11:18 AM
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Re: Piston, Cam, Head Porting

i would go with a stock bore 11.1 or 12.1 cp piston and get my head ported and a webb 3 cam youll be making plenty of power. i dont know anything about trinity

its still a raptor it just doesnt look like one
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post #6 of 22 (permalink) Old 07-26-2007, 11:43 AM
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Re: Piston, Cam, Head Porting

i have installed both CP and Weisco and by far the CP is the best. they both will get the job done, but if you want the best of the best then CP all the way!!!!!!!

12.5 is borderline for the beginning use of race gas

777cc, 105.5mm, 14.25 RE piston, +5 HR Crank, Web 4, Bo's CNC'ed Megladon, WK 54 TB, LSR +2 A-arms w/ Fox Float Evols and Elka rear setup by Wiigstyle, +2+1 herman stem, fast flex bars, Precision, Big Azz Sparks, DL programed DYNA, hipers with X-Rex rears and Razr 2 fronts.

Just a little 81hp trail bike.
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post #7 of 22 (permalink) Old 07-26-2007, 11:46 AM
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Re: Piston, Cam, Head Porting

Get yourself a higher compression stock bore piston. It will save you about $225 from not boreing and replating to go 105mm and will yield similar results. With that budget I would go megacycle x-1 cam, stock bore piston 12:1 or 12.5:1 and call it good. If you do a cam that doesnt require HD valve springs like the x-1 you should have no problem doing this install yourself for under $500.
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post #8 of 22 (permalink) Old 07-26-2007, 11:47 AM
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Re: Piston, Cam, Head Porting

I would go ask this same question to the engine building sponsor on this site.... I personally would stay away from trinity!!

87 LT500r - Drag Quad, 809 Triple Ski Doo (230hp), runs 110 race fuel
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post #9 of 22 (permalink) Old 07-26-2007, 04:21 PM
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Re: Piston, Cam, Head Porting

Some places cannot do all three for $700 but I might
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post #10 of 22 (permalink) Old 07-26-2007, 06:03 PM
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Re: Piston, Cam, Head Porting

if you can then im next please

12.5:1 734&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 08raptor700 (wifes)<br />port&amp;polish&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; stock for now<br />arp head studs<br />o ringed for nos<br />kw+1 valves<br />stage 2 HC<br />+2 throttle body<br />Velocity intake no box<br />pclll<br />LTE duals<br />dynatek ignition<br />+2 suspension<br />+4 swingarm
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