what engine porting

booboo9832

New Member
Sep 23, 2012
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i have a modded blaster that i do any type of riding with. It has a 360 main jet and i am having the engine ported. what porting job should i have done?
 
k&n air filter. ported and rifled carb. v force 3 reeds. boost bottle. power pros pipe 240 piston. 4mm crankshaft. nitrious kit. reed spacer. dyno jet kit. air box cover removed. advanced +4 timing.
 
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k&n air filter. ported and rifled carb. v force 3 reeds. boost bottle. power pros pipe 240 piston. 4mm crankshaft. nitrious kit. reed spacer. dyno jet kit. air box cover removed. advanced +4 timing.

All of that and stock air box? Crazy! Any port job will work for "ANY" kind of riding.


BTW- I smell a RAT!
 
The nos kit is made by microburst. It is $40 on ebay. Just type Yamaha blaster NOS into the seach bar. I installed mine and it was quick and easy. I really like it
 
I may be an old fart, and this has got my grey matter working overtime.

Am I right to be sceptical about injecting Nitrous Oxide.

Would not a shot of extra oxygen seriously affect the AFR and put it on the lean side.

Even in short sharp bursts it could be detrimental to piston life.

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Excert from the Microburst explanitaion.

Nitrous Explained

Nitrous oxide attacks the problem of how to get more oxygen into the cylinder from a different angle, don?t change the amount of air the engine can breathe by forcing air in like a Turbo or Supercharger, but increase the amount of oxygen it can breathe. Air contains only about 20% oxygen, where nitrous oxide contains about 36% oxygen. If you add nitrous oxide, you increase the total mixture?s oxygen level significantly, which allows for up to a 50% increase in oxygen level. That's a huge increase in POWER. The nozzle mounts on the airbox or airfilter where it sprays a fine mist of nitrous that is then drawn into the engine through the carburetor. This allows the nitrous to be naturally aspirated into the cylinder instead of being forced, which is much friendlier to the motor and allows the nitrous to be used in a much wider range of throttle and rpm settings.

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I really am not convinced, if you increase the amount of oxygen the you must compensate by adding extra fuel.

To my way of thinking all this is doing is putting the combustion chamber into a leaner condition and gaining the extra power that a dangerous lean condition will produce.

Can someone please explain how my thinking could be wrong.
 
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Nitrous will work in almost any ICE. The sledders up here use it on 2 strokes.
Actually my buddy Jeff (Triplecrown knows him) has a kit for us to try is we like.
Nitrous can be a killer on motors...
 
I can see it working, but I freak out at the thought of adding 50% more oxygen without the addition of extra combustable gasses.
 
I can see it working, but I freak out at the thought of adding 50% more oxygen without the addition of extra combustable gasses.

It adds fuel too, cannot remember how at the moment. I think it was for a FI system (many 2 stroke sleds are FI now, very good on fuel) and boosted pressure regulator with nitrous pressure, but other systems for carbs have enrichment methods too, pumps and solenoid valves. Jeff blew his sled motor up, so it is right to freak out. Nitrous is "running with scissors"!