Running methylated spirits in the fuel!

[brendonv]

On the stock briggs air filter it sucks in the air from the bottom and has a metal cover over the top. Wouldnt drilling lots of holes on the top increase air flow and make it run better? Ive taken off the muffler and have a small 90 degree pipe on there, it sounds wicked now and when u let off the throttle it makes this nice purr sound. Is it ok for the pipe to be really short, im talking about 25cm-30cm long. Do i have to lengthen the pipe more?

 

[jr dragster T]

Alcohol eat's aluminum and Viton carb seal's. Awww Russ you missed out to say it before me!

 

[Kenny_McCormic]

Short pipe is fine, what I did was flip the can upside down.

 

[ZnsaneRyder]

On the stock briggs air filter it sucks in the air from the bottom and has a metal cover over the top.

That's how my Honda Clone was. Two small holes in the bottom of the plastic filter assembly is all it breathes with! I just removed the top cover completely, and used a wingnut to hold the foam/paper stock filter in place. The filter is wide in the open, the wind blows ON the filter when riding, and makes a NICE power difference, and the sound is deeper under load.

 

[brendonv]

That's how my Honda Clone was. Two small holes in the bottom of the plastic filter assembly is all it breathes with! I just removed the top cover completely, and used a wingnut to hold the foam/paper stock filter in place. The filter is wide in the open, the wind blows ON the filter when riding, and makes a NICE power difference, and the sound is deeper under load.

http://au.youtube.com/watch?v=NkMgXLU70u4[/url] XD
It got eaten by metal eating termites yesterday.

 

[Russ2251]

Putting extra holes in air cleaner does zero.
A velocity stack will do much more and at best will give a 1 or 2% gain.

 

[brendonv]

Putting extra holes in air cleaner does zero.
A velocity stack will do much more and at best will give a 1 or 2% gain.

It seemed to boost air flow in mine.

 

[Russ2251]

It seemed to boost air flow in mine.

Prove me wrong and I will post retraction!!!

 

[jr dragster T]

I see some people need a dyno pass with print out's XD

 

[Russ2251]

When I had access to a dyno, my engines never came up with the same numbers twice. Could have been a software problem.

 

[jr dragster T]

LOL XD That's because no two dyno pulls are the same. Ever so slight change's. Just everything about the engine was different each pass. Where you trying to test me?

 

[Russ2251]

Where you trying to test me?

Never crossed my mind.

 

[jr dragster T]

Ohh I see.

 

[jr dragster T]

Well in a Dyno pull/pass you will notice relativly the same EGT's and CHT's and RPM. But HP VS TORQUE will almost never be the same.

 

[brendonv]

i might mod the air filter more. Might take off the whole side and bottom bit and just have a top on it.

 

[ZnsaneRyder]

i might mod the air filter more. Might take off the whole side and bottom bit and just have a top on it.

Probably better than the holes.

It's a nice little engine, can't wait to see it on your kart!

 

[Russ2251]

i might mod the air filter more. Might take off the whole side and bottom bit and just have a top on it.

Why??? Making it lighter makes it go faster?

 

[brendonv]

Why??? Making it lighter makes it go faster?

When i put the engine on my kart ill try it with the cover on and with it off n see if it makes a difference in power. If it doesnt then ill leave it but it might make a slight difference.

 

[Russ2251]

Use scientific method, not what you "think" or "feel" or what it "seems like". Make several runs with mods and several without. Use a stopwatch. Chart results. Take an average.
This is one of the things that engine blueprinters do.

 

[jr dragster T]

Use scientific method, not what you "think" or "feel" or what it "seems like". Make several runs with mods and several without. Use a stopwatch. Chart results. Take an average.
This is one of the things that engine blueprinters do.

Couldnt agree anymore.