Fuel Mixture Oil to Gas Ratio Help!!!!!

[Jeffrey gagnon]

Ok so i have a question on gas/oil ratios regarding performance parts
1st off does the gas/oil ratio matter when running performance parts on your build? I run 32/1 before i added flex fit poo poo exhaust with an Xport manifold
I have also purchased the GT-80 reed valve and carby intake manifold running on a 36 thooth sproket

Before parts where added was able to get up to 32.8 MPH with just a dual boost bottle kit now with everything listed minus the boost bottle i only get about 21 MPH and the engine at time seems bogish if im asking this question in wrong area please just let me know where i can get the proper information

 

[Greg58]

What I always recommend is do one modification at a time, when you try too many things at once it hard to tell what works and what doesn't. What rear sprocket were you running when you reached 32? It sounds like it could be geared too high, but that depends on the terrane and the weight of the rider. My 48cc bike with a custom pipe performs better using a 44t sprocket than it does with a 41t. It gets in the pipes power band better with the 44t.

 

[Jeffrey gagnon]

Was running a 36 thooth sproket with a dual boost bottle kit was able to reach 32.8 at WOT

With new setup still running 36 thooth sproket no boost bottle running gt80 reed valve carburetor intake with XPort intake and flex fit poo poo exhaust only able to get about 21

 

[Greg58]

If you run a reed valve the carb sometimes needs a bigger jet, you'll have to experiment to find what you need. To answer the first part of your question you do not need to change fuel ratio when you add a reed valve, 32/1 with a good oil for air cooled engines should lubricate the engine well. Most upgrades are not a bolt on and go situation, on a 2-stroke you have to tune to every modification.

 

[Greg58]

You may want to read this...
http://www.dragonfly75.com/motorbike/reedvalve.html

 

[Jeffrey gagnon]

The reed valve came with the carburetor its the gt80 reed and carb assembly they seel ut at gasbike.net should i have the c clip in the highest position on the needle meaning the needle goes furthest into the float bowl thats what ive read from a couple of people

 

[Big G]

Your two stroke motor will run fine on just about any branded 2 stroke oil. The big enemy of any 2 stroke is heat. Get a big finned head and replace the muffler with one that will let the motor breath. Reed carbs, boosters and the like don't really let you gain much. Here is an example. 66 cc Grubee, stock will run you down the road at about 30 to 35 mph. Add a ported cylinder and high compression head with a expansion chamber type exaust and you're going 40 to 45. Add a good after market carb and you are going a solid 45mph. It's that simple and a mixture of 4 oz. to one gal. of reg gas is fine.

 

[Jeremy/Bicycle Engines]

Bicycle-Engines.com has Eco-tech oil for 2-stroke engines and you can find that here, http://www.bicycle-engines.com/EcoTech-Full-Syntetic-2-Cycle-Oil.html

 

[butre]

I run lucas, it's a dime more than the no name stuff at autozone

 

[sully1617]

Hey everyone! I'm still new to the motor bike world but I have completed my first build! I love riding my motor bike. The only question I have now is after the first 2 tanks of gas what's the oil:gas ratio? The first 2 tanks I mixed 16:1. Now that the motor is broken in what oil:gas ratio should I be using? I'm wondering if there are better ratios that make the motor faster or more quiet? I don't need speed because you can only go 30mph on a motor bike here in Wisconsin. Any ratios I can use to make the motor running smoother and more quiet? Anyway, can anyone give me some insight on which ratios work better after the first 2 tanks of 16:1????? Thanks!


WickedWheelz
GO GREEN

Get yourself a 1 gallon gas can and some better quality oil such as Lucas oil or amsoil and put 4 oz of oil in the plastic jug the go to the gas station and put in exactly 1 gallon of gasoline. problem solved. if you can't figure out 4 oz you can borrow your mothers or chicks measuring cup and put 4 oz of water in it the pour that into a glass jar or glass and mark it with tape. (Marker rubs off quik don't bother) then dump the water out of the jar and dry it out good and now you have your own measuring glass for oil. i use a small canning jar with a lid to keep the dirt and bugs out when not in use and keep it filled to the line so when i run out of fuel it is already to go for the next trip to the gas station. But Don't take the glass jar with you to the gas station pour the oil in your gallon jug and take that to the station. also you can purchase little 5oz oil bottles at any hardware store that has lawnmowers. the problem with that is you need to figure out what size tank you have and carry just the right amount on your ride to do a fill up and most of the tanks out there are rather small so that little bottle will be too much for your tank which is why i said go buy a 1 gallon gas can. your gonna get a lot of people with good intentions telling you all kinds of confusing things... just do what i just said and you'll be just fine. i've been doing exactly that for 4 1/2 years on mine and not a single problem with mine