Skimming blaster head to raise comp
- Thread starter Gsi-mark
- Start date
You don't want to just remove material from the sealing surface of a stock head. This will lead to detonation (pre-ignition). You need to re-chamber the combustion chamber (Hemi)and set up the proper squish distance (clearance). This is where you start making power. The stock yamaha blaster combustion chamber design is a poor design that promotes a "Lazy" burn of the air/fuel charge. A re-chambered head will really wake up the blaster engine,and gives it a snappy,quick revving power band. A HUGE difference! The stock cylinder head is one of the parts that yamaha "de-tuned on the blaster engine to make it more tractable,or in other words "easier to ride" for new entry level riders. The high compression,re-chambered head lets you still run pump fuel WITHOUT detonation. A HUGE PLUS! No "Race gas" required!
Here's some of my work. the difference is quite noticeable.
Here's some of my work. the difference is quite noticeable.
yep what they said. do a search for the hemi style heads. i'm running one with 165psi and runs on 93 pump gas. and it adds alot of low-end torque and more snap to the motor
GASKETS :: Blaster ::...
Vito's hi-comp gasket is .014 thinner than stock, I would say you wouldn't want to go much more than that. Re-chambered is still the way to go IMO. $14 for gasket, at least $20 TO MILL IT and about $60 to re-chamber. Your choice.
Vito's hi-comp gasket is .014 thinner than stock, I would say you wouldn't want to go much more than that. Re-chambered is still the way to go IMO. $14 for gasket, at least $20 TO MILL IT and about $60 to re-chamber. Your choice.
