performance

My engine is a GT5 Stinger with a Jakes head and a ported cylinder body. I'm running a yz700 exhaust and a boost bottle. I also have an rt carburetor and an SBP shift kit, with an HD freewheel. My Bike frame is a Felt Vintage Iron Bolt, with a sealed gas tank. Im using the recommended NGK spark...

So I'm thinking about building up a 212cc predator engine with the goal of getting as much power as possible on a $1,000 budget, not including the stock engine or a bike to put it on, as I have both of those already. The end goal would be to race it in the unlimited class at one of the SoCal MB...

Hi everyone my name is Neil, I just finished my first build(sorry site wouldn't let me post my pics) and I have a few questions. Firstly, where can I find detailed instructions (preferably video or visually aided) on how to properly adjust the carb on a 66cc engine kit? My cpin and cwasher are...

I dug around on this board for a thread describing the exact symptoms my bike is displaying and came up null - though I am suspecting my fuel/oil ratio to be the culprit. That being said I'm going to describe the problem as best as I can to see if it sounds familiar to anyone: The...

Hey guys, I'm not sure if I did this on this site or not, but here goes. My name is David, I've been building for a year and I have ASE certifications in automotive. I kind of fell into this hobby by trying to save gas and I love it. I've build standard kits, performance add-ons, jackshaft kits...

Does the boost bottle really do anything i have been thinking about this for a long long time now can anyone tell me if it works

Recently bought a RSE reed valve kit, installed it once but was too lazy to re-jet carb and possibly boost port the jug. Let me know if anyone wants it, I paid $80 from JNM looking to get some of it back. The reed valve is in almost brand new shape, installed it on new engine, rode it to...

So im not all that experienced with aftermarket parts, performance, power, all that. ive always built these things stock but i decided to go all out this time and i had a few questions im sure you all can answer with ease; 1) Can I run a stock engine with a HP carb and HP expansion chamber...

hi i'm looking for some info on a two stroke china 49cc motor kit LEB off ebay. The kit came with a 39 tooth sprocket and i have it mounted on a 10 speed road bike it had 27" tires i changed the to 24". I'M wondering if its geared to hi, it doesent's have any hill climbing power the top...

Okay so I am a newbie and I humbly admit it. However I have learned a few things so far and am trying new things regularly. I will post here as I learn whether they work or not. Tip #1 and foremost is immediately take out that junk chinese spark plug and put in an NGK Iridium 4085 {also...

Are you getting all 3 Horse Power out of your china 2 stroke? I know I’m not. With the untrue rag joint sprocket, the “California Friendly” catalytic converter exhaust, CNS BS carb, unbalanced crank, Chinese bearings, and unmatched porting, I think I would be lucky to get half the rated horse...

Hello everyone! My nickname is Rzee and I was lucky i could get that name because usually it is already taken when I go to register for something. I believe I am an experienced builder (what I mean is I have some experience) so I know a little about this game we play. I am interested in learning...

Hi all, So I got my bike running pretty well at this point, but its still a bit rich being that I'm at 7200 ft. Anyways, I've looked into soldering and re-drilling out my jet to a smaller size, but I'd rather order new jets if possible. If anyone finds jets for this carb I need some...