Predator Monster — McGonster Monster Motors
McGonster Monster Motors · Free Tool
Predator 212
Dyno
Go-Kart & Mini Bike Build Simulator · Tune it right · Buy it cheap
MMM Network Jetting Calculator ● Free
Dyno — HP & Torque
ESTIMATED · ACTUAL RESULTS VARY
Cam Profile & Head Flow
LIFT VS CRANK° · CFM @ 28" H₂O
Int lift
Exh lift
Int CFM
Exh CFM
Peak HP
hp
@ RPM
rpm
Peak Torque
ft-lb
@ RPM
rpm
Comp Ratio
:1
Rev Ceiling
rpm
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Build Your Motor
01
Engine Block
Variant & governor
Ghost engine has no governor. Remove governor BEFORE raising rev ceiling with cam/springs.
02
Bottom End
Rod · Piston · Flywheel
★ Stock rod is aluminum. Upgrade to billet before removing governor or running over 9 HP.
03
Cylinder Head
Porting & milling drive CR calc
★ Race heads require matching cam, dual valve springs, custom pushrod length, and billet rod.
04
Head Gasket
Thickness affects compression ratio
Compression Ratio (live calc)
05
Valve Train
Cam · Springs · Rockers
06
Carburetor & Jetting
Carb size · Air filter · Fuel · Jetting recommendation
⚙ Jetting Recommendation
REC JET #
07
Exhaust
Header & pipe style
08
Ignition
Coil & rev limiter
Power Mod Breakdown
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Jetting Factors
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Jetting Reference Chart — Predator 212 / GX200 Clone
Condition Elevation Temp Jet Size Notes
⚙ Parts in this build — where to buy
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Trusted vendors for Predator 212 parts
gopowersports.com ombwarehouse.com arcracing.com bmikarts.com dynocams.com nrracing.com eccarburetors.com amazon.com