free power gains

[heyron]

can any of you think of ways to get free power gains, like for one i know that by removing my egr system i was able to climb hills much better i got alot more low end power. post you ideas like porting and modifying of parts

[imnts2]

Might mot be quiet free, but most GY6 carbs run a bit lean at WOT so a small increase in size in the main jet in the carburetor is cheap (2 -3 bucks) and your engine may run a little better and a bit cooler too.

Be careful about opening up the air intake or the exhaust, it may actually slow down air flow and reduce power.

But advancing the spark a few degrees is always worth trying. A performance CDI may or may not have a bit more aggressive timing curve but it is hard to find out which ones really give you more power and which only remove the RPM limiter that may just cost you an engine being blown up. But moving the "pick up" for the ignition timing 1/8" (more or less) counter clockwise is worth a try.

lots of luck
cheers
lefty2

[terrilee]

Mar 4, 2012 8:29:37 GMT -5 heyron said:

can any of you think of ways to get free power gains, like for one i know that by removing my egr system i was able to climb hills much better i got alot more low end power. post you ideas like porting and modifying of parts

theres 100's of threads on the home page
or use the google search at the bottom of the page

[heyron]

none of which are anything are FREE but cutting cooling fan blades. what i was trying to do was get people thinking outside the box. like imnts 2 had a really good idea instead of buying a cdi move the magnetic pick up to advance it.

[terrilee]

LMSAO

aint much free in life

[heyron]

soooooo true. im not sayng to go find your lunch in a dumpster but take advantage of free resorces why spend money that you dont need too.

[terrilee]

well like i said nothing is free
new jets.............. $
better gears ....... $
better cdi or coil.....$
u can try the boric acid trick
but even that costs $

and really, dont u think if ANYONE had found
FREE TIPS OR TRICKS

it would be listed, and everyone would be talking about it

but i see your young, and well w/e


good luck
IF U FIND FREE THINGS
PLEASE POST

LMSAO

[Pony66]

Like posted above, tuning the carb is a good way to squeeze out some more power. Finding the right jet for your situation and keeping the A/F mix adjusted.

Keeping air in your tires is extreamly effective.

Its not free, but lightening the rollers is a very popular way to gain some power. Most scooters make a little more power with a little higher RPM.

Keeping up with maintanence like oil changes and valve adjustment can restore some lost power.

Finally, loose some weight

[h3nry]

free,
grinding the inside of the intake manifold ( you know, the about 60degree aluminium thing that goes from the carb to the intake of the engine) to make it smoother transition and make it the same size as the engines intake port, also to change the intake's angle a bit less dramatic.

CAREFULLY enlarging the jet size a little bit to allow more fuel if you need it after adjusting the carbs fuel air mix correctly and checking everythign else. ( i use a "ink" needle, from an old printer cartrage refil kit :] its about 1.1mm OD so its perfect.)

[gysixxer]

i heard by cutting slits into ur clutch pads. it helps it grip harder.....because gasses are expelld out thru the slits. kinda like brakes. a friend of mine is going to do it...i thought about doing it as well...

also on the flywheel. u can advance ur timing. since the flywheel is keyweighed, i heard u can notch out another slit so u can advance ur timing that way..... another friend of mine used to race bikes and this was mods they would do. i believe he did it to his current scooter....and i also believe this is how its done. i can definatly find out...

[D-cat]

^^^ I don't remember where but I have actually seen +3 degree offset woodruff keys for that exact purpose.

[gysixxer]

Yeah but lol this is the free way to do it!!!!

[justbuggin]

you can slot the mounting holes on the pickup and slide it back and forward to effect the timing

[alandok85]

I know this is an old thread but I had to share this info with everyone looking for free/ extremely cheap performance gains.

1: replace your fuel filter with a brigs and Stratton disc filter from the lawn and garden section, it has way more flow and catches harmful grit well enough, it increases your low end torque and helps the engine start better.
2: replace your vacuum lines with automotive grade lines from an auto parts store, most of the cheap lines that come stock on scooters collapse under high rpm.
3: Dr. Puller sliderweights they rock!!!
4: here's one alot of people miss, remove the secondary air cleaner and cap its vacuum line. The secondary air intake robs power at low and high speeds and can make the engine vaporlock if routed wrong. It usually feeds off the carborator breather valve and the air intake hose. The secondary air intake is as useless as man nipples and is a pound of dead weight.
5: if riding a 50cc bike simply removing all of its horrible speed restrictors will get you a massive gain in MPH.
6: if your scoot is fuel injected, a simple high flow uni pod will get you a boost in speed as efi bikes automatically remixes the air/fuel mix to optimize power just like a car.

Well that's all I've got for now...

[jetpackjake]

alan, can you elaborate on the secondary air filter? where is it located? never heard of this before.

thanks,
jake

[timelancer]

You want a free power gain? Take the metal trunk rack off. Mine weighed 5lbs. If running a 50cc you can get rid of the passenger foot pegs as its illegal to e put a passenger on one anyway (atleast where. I live) each peg weighs around 1/4 Lb ,the welded parts each weighed around 1/2 Lb. I drilled millions of holes into the glove box,behind the head light reflector(weight and helps cool light), into the battery compartment, and the black plastic behind the tail light, I cut my rear fender exactly as long as my license plate, and replaced all the lights with leds, each led weighed around 1/2 gram less than the standard bulb and uses less power. Oh I also took off the side stand and all the emmisions. Less weight equals to less stress on belt, less wear on the tires, more power and fuel economy and it's a lot easier to put onto the center stand and to work on without all those things in the way. I can now pull a plug without taking the seat off.

[turbotech]

depending on the scooter engine heres some free mods and cheap mods

DO AT OWN RISK(some mods for two strokes some for four i bunched them all togeather.ask me if you want details to any of mods highly reccomended
#1 port match exhaust and intake
#2 port and polish cylinder head w/dremel polishing only the exhaust ports.smooth the intake side of all imperfections,but DO NOT POLISH INTAKE SIDE then finish with wire brush
#3 shave cylinder head 0.02"to 0.03"to up compression Local machine shop will charge 25-30$
#4get rid of stock air box and put on k&n filter
#5 rejet carb using home made larger jets(make jets larger with wire or drill bit
#6derestrict exhaust for two stroke open canister up and drill large holes in plate restricting the flow weld back up ,for four stroke put dirt bike slip on muffler on(fmf canister)
#7drill holes in stock clutch face to lighten clutch good for 2000 rpm gain.You want tokeep the holes even 4 or five spaced perfectly apart.(not to throw clutch off balance)
#8cutfan cover not the fan itself

[revweasel]

Mar 4, 2012 10:00:44 GMT -5 Pony66 said:

Its not free, but lightening the rollers is a very popular way to gain some power. Most scooters make a little more power with a little higher RPM.
)

with higher revs comes reduced mpg, so that is iffy on the free part there too. just a thought

[timelancer]

that's not even the point revweasel, there's no way to GAIN 2000RPMs just by cutting into the clutch, unless he's talking about engagement rate. I use a prodigy clutch which weighs around half as much as a stock one and it didn't add more than 100RPMs, however clutch engagement is now at 4000RPMs and yes it does use more fuel and burns belts faster.

[bwader]

If you have a digital scale you can weigh each variator parts and change the rpm's by swapping out a lighter or heavier one ( if you have an extra one ).

For instance my original Variator weighed a total of 585 grams.
Performance Variator weighed 540 grams.

But, 540 grams is WAY TOO LIGHT. On my scooter at least. Maybe if you had heavier rollers to compensate.

I had the Racing Variator and swapped the smaller part that holds the rollers on with the stock one that weighed more my current setup weighs 560 grams total.


Also I think its possible to sand or grind down parts to lighten them up.

[bwader]

I forgot to mention at 540 grams including 10.8 gram rollers RPM's were too high 6500! at 25mph!

So yeah its been a little trial and error experimenting more than just the rollers.

[alandok85]

@ jetpakjake: the secondary air box is ussaully under or near the gas tank it uses the engines vacuum to draw gas vapors from the Carb check valve and reinjects it into the air intake to 'recycle' the fumes. Its part of the dumb ass c.a.r.b. regulations. Oh and it can vaporlock your gas tank if routed wrong and it lets moisture seep into the gas tank. Its evul eeeeeeeeeviiiiiillllll!

[scootridin]

thanks for the info! ill let yall know if i find out some new tricks

[GaScoot]

FYI, like h3nry said you can slot the clutch pads and drill the clutch bell contact surface area with SMALL holes and def gain more grab from your clutch. I did a lil head/intake work and the clutch work and had my scoot poppin wheelies! That was before I stretched it though, now it's just quick lol... Still using stock rollers btw.

[progenitor04]

Jun 7, 2012 0:43:36 GMT -5 alandok85 said:

@ jetpakjake: the secondary air box is ussaully under or near the gas tank it uses the engines vacuum to draw gas vapors from the Carb check valve and reinjects it into the air intake to 'recycle' the fumes. Its part of the dumb ass c.a.r.b. regulations. Oh and it can vaporlock your gas tank if routed wrong and it lets moisture seep into the gas tank. Its evul eeeeeeeeeviiiiiillllll!

so wat are u saying, u shud disconnect it?

[mainepeace]

Best FREE MOD.

Go on a diet and lose weight.