07 ec300 - I need more power!

[Hollywood]

First I am not sure what the hp and tq figures are for the 300.

Second, I need it to be faster. My dealer already rejetted it with the LTR kit for my altitude. I have the gas gas labled front pipe and the unmarked muffler. I have to run the bigger stator since my bike is street use too, so I cant change that.

In order what are the performance gaining mods for these 300's?

 

[d2w]

Power? Top Speed? Dirt? Street? These objectives are somewhat opposite of one another.

If you want top speed for the street, slap on a smaller front sprocket. Increased power won't help you for street speed as you won't be increasing the max RPM.

As for engine mods:
1) LTR Power Valve Cover
2) RB Design head and carb mods

Dale

 

[widebear]

more power

Contact Steve @ Motowest. His 300 quad engines are making 60 horse, dicking around with boutique or so called tuner parts is a waste.

 

[gasIdaho]

I'm pretty sure the 300's are close to 50hp and the torque in between a 250/450 4T. Need more power...for what?? Go two teeth smaller on your rear sproket to help your top end speed. In general, 2T's aren't happy flying down the road at WOT for long periods of time. Not really the weapon of choice for dual sporting.

 

[Hollywood]

Power? Top Speed? Dirt? Street? These objectives are somewhat opposite of one another.

If you want top speed for the street, slap on a smaller front sprocket. Increased power won't help you for street speed as you won't be increasing the max RPM.

As for engine mods:
1) LTR Power Valve Cover
2) RB Design head and carb mods

Dale

Nothing confusing at all. I want the engine to make more power. I highly doubt the power cover is above any head mods too.

Contact Steve @ Motowest. His 300 quad engines are making 60 horse, dicking around with boutique or so called tuner parts is a waste.

Now this is what I'm taking about. Thanks.

I'm pretty sure the 300's are close to 50hp and the torque in between a 250/450 4T. Need more power...for what?? Go two teeth smaller on your rear sproket to help your top end speed. In general, 2T's aren't happy flying down the road at WOT for long periods of time. Not really the weapon of choice for dual sporting.

I dont think they are 50hp at all, tq maybe but not hp. My yz250 is 53hp, 38 tq and is noticably faster than my 300.

Ya I'm not really flying anywhere at WOT for an extended period of time, and I am aware of the limitations of a 2t on the street. It's not that bad, on decel or down hills, I go a gear or 2 higher to put in to keep the oil flowing.

 

[gasIdaho]

That's a bummer eah. I would do the head mod for sure due to your elevation up in Calgary. I live at 6200ft and ride mostly 6-10k. It will run crisper for sure. I've also done the RB carb mod which gave my bike more tunability, easier jetting and increased my top end. I have friends with YZ's that have major engine work done for racing and they can keep pace with me at best on an even drag....until I shift into 6th . Hill climbing...no comparison. The EC300 smokes them.

 

[Hollywood]

Ok so the gas gas is 50.6hp, 37.4tq according to Motowest's website. Im actually surpised by both numbers. I thought the tq would be higher and the hp lower.

 

[Hollywood]

That's a bummer eah. I would do the head mod for sure due to your elevation up in Calgary. I live at 6200ft and ride mostly 6-10k. It will run crisper for sure. I've also done the RB carb mod which gave my bike more tunability, easier jetting and increased my top end. I have friends with YZ's that have major engine work done for racing and they can keep pace with me at best on an even drag....until I shift into 6th . Hill climbing...no comparison. The EC300 smokes them.

Ya I think the elevation is killing me for sure. My yz is tuned well, tuned for mid hit, but no engine work, when I drive my yz it's like a force to be recond with, my 300 feels tamer, but I gree there is a noticable difference in hill climbing and lugability on the 300. My friends dont even like driving my yz, they say it's too twitchy to much power, for me that's the way I like it, just it's shorter on tq compared the 300.

I know the 300 has room to improve with the right mods to get the engine to where I want it to be.

 

[Nick]

Its plenty fast, it just doesnt feel fast. Most people i let try a GG come back saying that they are decievingly fast. Have someone time you on a set course on each bike and i would bet the times will suprise you.

 

[gasgasman]

Remember the old saying?
"Don't raise the bridge, lower the water".

You may have to put a 250 top end on your bike.
The 300 slug weighs more-sapping power.

Or get an MC 250 and put a lighting coil on it.

 

[Hollywood]

Its plenty fast, it just doesnt feel fast. Most people i let try a GG come back saying that they are decievingly fast. Have someone time you on a set course on each bike and i would bet the times will suprise you.

I did do that a week ago, the yz was faster...

Remember the old saying?
"Don't raise the bridge, lower the water".

You may have to put a 250 top end on your bike.
The 300 slug weighs more-sapping power.

Or get an MC 250 and put a lighting coil on it.

I used to race cars, I'm the type of guy that has a need for speed. I never expected people to understand why I want power, I just do. If 98% of the people are content with their 300's, that's good, for us 2% that want more, or want to look past stock setups to create something more, then I am looking for that advise. I'm not the type of person who can be content with normalsy or stock. My old WR modded had 57hp, my yz modded has roughly 55, I just want my gas gas to have more too.

If a 250 more can make more power than a 300 but a 500 makes more power than both I cant see why I cant mod my 300 to actually act like the 50cc difference that it is in both hp and tq and not just gain tq and loose in hp. I realze the whole piston weight thing, but again look at the cr500 it has a much bigger/heavier piston than the 300 yet it has no loss over the 300. Perhaps the even bore and stoke of the 300 tames it to feeling slower than it is... May be its the compression ratio..

In the end I am new to gas gas, I am looking for information and advise in getting more power out of my 300. I have emailed motowest for assistance, if they can truely extract 60hp out of the 300 then I will have my answers.

 

[jeffd]

The squish is set up loose and the compression is relatively low (even at sea level) - given your relatively high altitude - you will see this negatively impact you more than others here. And the combination of altitude and GasGas OEM "out of the box" specs negatively impact the HP delivery greater than they would for your YZ...

There are three base gaskets of different thicknesses - the bike will usually come with 2 installed. You can go with a single thinner gasket here and boost compression (and reduce squish to get the bike running more cleanly) - but for a complete fix you need to have the head machined by someone who is good - the only person I would let touch it is Ron @ RB-Designs.

Decide what kind of fuel you will be running - pump or race gas. Send your cylinder head to Ron @ RB-Designs and have him dial in the squish and reshape your combustion chamber. . You tell ron at what altitude range you will be running at and he sets your compression ratio so that the bike runs at top efficiency in this range (and doesn't go "boom"). Oh and Ron doesn't like to ship to canada - if you want to ship it to me - I'll take care of carrying it to his shop for you - he lives 5 miles from my home...

I think the 300s still come with a reed spacer? If yes, remove it...

If you want to have the porting blue-printed and cleaned up - I would ask Ron to do it - he is reluctant to do porting - he told me he would do KDX cylinders and the nikasil coating would flake off - gasgas is very strong - let him know this and see if he will do it... he is very, very good and very reasonably priced - his pricing is back in the 70s somewhere.... If Ron won't do it,then I would send it to slavens racing in colorado - he used to do the porting work for moose racing back in the 90s - I had him do a kx250 motor for me - more power across the board - very, very clean work.

If you are riding at a wide range of altitudes - I would definitely go with the full RB-Designs carb mod - he modifies the internals of the keihin so that you can ride over a much wider altitude range and 'get there' in terms of jetting with a simple turn of the air screw. I don't know what he does - but it definitely works...

jeff
aka webmaster gasgas riders club...

 

[2 strokes 4 life]

Try a different flywheel that is lighter. The EC you have has a ton of rotating mass. Try a MC or DE flywheel. The reed spacer removed would help top end. Also, the head mod will do great things for your bike. A different ignition from a 200 would hit way harder.

 

[Hollywood]

The squish is set up loose and the compression is relatively low (even at sea level) - given your relatively high altitude - you will see this negatively impact you more than others here. And the combination of altitude and GasGas OEM "out of the box" specs negatively impact the HP delivery greater than they would for your YZ...

There are three base gaskets of different thicknesses - the bike will usually come with 2 installed. You can go with a single thinner gasket here and boost compression (and reduce squish to get the bike running more cleanly) - but for a complete fix you need to have the head machined by someone who is good - the only person I would let touch it is Ron @ RB-Designs.

Decide what kind of fuel you will be running - pump or race gas. Send your cylinder head to Ron @ RB-Designs and have him dial in the squish and reshape your combustion chamber. . You tell ron at what altitude range you will be running at and he sets your compression ratio so that the bike runs at top efficiency in this range (and doesn't go "boom"). Oh and Ron doesn't like to ship to canada - if you want to ship it to me - I'll take care of carrying it to his shop for you - he lives 5 miles from my home...

I think the 300s still come with a reed spacer? If yes, remove it...

If you want to have the porting blue-printed and cleaned up - I would ask Ron to do it - he is reluctant to do porting - he told me he would do KDX cylinders and the nikasil coating would flake off - gasgas is very strong - let him know this and see if he will do it... he is very, very good and very reasonably priced - his pricing is back in the 70s somewhere.... If Ron won't do it,then I would send it to slavens racing in colorado - he used to do the porting work for moose racing back in the 90s - I had him do a kx250 motor for me - more power across the board - very, very clean work.

If you are riding at a wide range of altitudes - I would definitely go with the full RB-Designs carb mod - he modifies the internals of the keihin so that you can ride over a much wider altitude range and 'get there' in terms of jetting with a simple turn of the air screw. I don't know what he does - but it definitely works...

jeff
aka webmaster gasgas riders club...

Pump gas is fine.

How much is a new head? I'm thinking I might just buy a new head from the states then it's only 1 way shipping, but I guess I would still have to ship the solder with the new head on first...Doh!

Whats the typical turn around for the carb work?

I do have the spacer, I will remove it.

Try a different flywheel that is lighter. The EC you have has a ton of rotating mass. Try a MC or DE flywheel. The reed spacer removed would help top end. Also, the head mod will do great things for your bike. A different ignition from a 200 would hit way harder.

I thought the ignitions and the flywheels are non interchangeable? I can use the stronger stator with the lighter MC or DE flywheel?

 

[stay_upright]

More power what about a 700cc 2 stroke?

http://www.maicouk.co.uk/html/supermoto.html

Maico 620 Super-Moto.
Cooling: Water
Inlet system: Reed valve system
Exhaust system: H.G.S. exhaust system
Cylinder capacity: 616ccm
Measures: 95 x 87mm
Horsepower: 76

Just buy the bike or maybe the engine would slot into your 300? I've heard the 620 is a bit flat with only 76Hp stock so maybe wait for the 685?

Then tune it to release the horses a 685cc 2 stroke should be able to deliver and I'm sure over 100 horses should be achievable and then your into the 1000hp/ton category which should wipe the floor with a R1 for hp/kilo

Seriously though i would have thought changing the 300's pipe for something that brings the power on higher up the rev range would be needed as well - I believe the stock pipe is setup for torque not power.

 

[2 strokes 4 life]

Pump gas is fine.

How much is a new head? I'm thinking I might just buy a new head from the states then it's only 1 way shipping, but I guess I would still have to ship the solder with the new head on first...Doh!

Whats the typical turn around for the carb work?

I do have the spacer, I will remove it.



I thought the ignitions and the flywheels are non interchangeable? I can use the stronger stator with the lighter MC or DE flywheel?

I am sure you can because some american bikes come with a 100W stator with a DE flywheel.

 

[Loosenut]

Most people buying the GasGas 300 are looking for more torque rather than speed. If more power is what you want, then so be it. If you want the 300 to be more like a motocross bike with a hit in the middle, just do a few things. Make sure your running in the CDI switch in the sun mode for a bigger hit as well.

1. Have the head milled.
2. Run a #8 slide, LTR 0 needle
3. Use an FMF pipe
4. Use the MC ignition/CDI

You can probably swap your stock pipe for someone looking for smoother power from their 300.

I don't consider the GasGas 300s to be all that fast of a bike. I do find them easy to ride and tune. I ride much faster because of it.

 

[iancp5]

Why not buy an open class 4T crosser? KTM 540 or something? The EC300 is targeted at enduro so they're trying to produce a bike that will be fastest over 3 hours or more of riding not one with the most bhp. I know they make an MX but I don't think it's really their focus is it? I guess you have the mods in the US for your more open and dry riding but really they're developed for European timecard events which run up to 7 hours a day in tighter and more varied terrain. I guess if you like modifying a bike for the fun of it, it's a different story but generally it's cheaper to buy the right bike for what you want.

 

[Hollywood]

Why not buy an open class 4T crosser? KTM 540 or something? The EC300 is targeted at enduro so they're trying to produce a bike that will be fastest over 3 hours or more of riding not one with the most bhp. I know they make an MX but I don't think it's really their focus is it? I guess you have the mods in the US for your more open and dry riding but really they're developed for European timecard events which run up to 7 hours a day in tighter and more varied terrain. I guess if you like modifying a bike for the fun of it, it's a different story but generally it's cheaper to buy the right bike for what you want.

Becasue I'm 2 stroke for life! I would get a cr500AF before a 4t again. I looked at the ATK 700. But it's 10k US, but that does come with life insurance.

Honestly though. I have some good idea's here between whats posted and motowest got back to me saying that 20hp more on the 300 is no problem. So I think I'm in good shape. I'm looking for about 5-10 hp/tq increase.

 

[SpeedyManiac]

3. Use an FMF pipe

Use a Messico pipe. The FMF goes flat up top but adds torque down low. The Messico lets it rev better.

Definitely get a 2k-2 ignition and flywheel. It will make a big difference.