The ultimate HT performance parts list!

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Need some exhaust .

I can build a high performance ht with nothing but a dremal tool and the stock parts it came with . . .

And i can make it rev higher and make more power where i want it than an unexperianced builder who just bolts on a bunch of so called high performance parts and hopes it goes fast after lol yeh you can spend 400$ on an ultimate top end kit from jakes or jnm or arrow cycles and just bolt it up but without knowing how to make the correct intake duration and exhaust duration for your setup and how to tune exhaust length and expanrion chamber therory and how to set a sqquish band to an effective distance than all those parts are a lot of wasted money but hey i think you will feel some performance from the increased comp and freed up exhaust but it wont be anywhere what it should be lol

the point is you really dont need to actualy buy anything to make a high performance china gorl ¡ one of my fastest bikes ever was a grubee gt5 running ALL stock parts! !!!!!!! I did however spend a whole lot of time porting for a target rpm range and making an exhaust and decking the head and resaping the chamber and deckimg the jug and porting the transfers and changing the transfer angle and cutting and grinding the piston and port matching the case to the jug and tunning the cns carb and portmatching the intake manifold and exe exe exe . . . The point is i didnt spend a dime on it lol and it was one of the fastest bikes i built! it had more power than if i spent 400$ on a top end kit from jakes and jist slapped it on! !!!!

But what you really want to do is all of that hard work but on the performance parts, making shure they are all in tolerance and port matched and the right comp ratio the right case comp ratio and the right aquish . . .Its a lot of work. . But then you will have something you can look at and know its right and no one can touch it!

For instance i met a guy here who bought the arrow reed block kit and he complained it actually had less power lol i told him for 50 $ i would fix it

turns out he just slapped the reed block and dellorto carb on a bone stock motor !!!

For that 50$ i took off his top end and took his head to a belt sander till it was around 6cc then finnished the gasket surface to net higher comp
then i cut the skirt up 5mm and drilled 2 small holes side by side in the intake side of the piston to give him aroind 160 deg intake duration then ramped the exhaust and transfers for flow and timing corrections
then since i had the jug off i gave it a good port clean up nothing special just a good cleanup
then i cut his exhaust open and gutted the cat out of it and welded the end cap back on and drilled out a new stinger hole that was 5/8 id then welded it all togethwr

the bike ran like a beast after that! !! The guy was actually blown away it could be that mutch of a differance and the bike had all the same parts as before he couldnt understand what i did lol he was baffled as to how i made the reed valve system work the way it should he just didnt get the inner workings and duration and timing and comp and all that he was shure all u had to do is bolt parts on and it goes faster lol and a lot of people are like that now they dont understand the funtion of the parts they are bolting on or the combination of parts that should be used

How about the mikuni vm 16 and 18?

THOSE ARE GREAT carbs

and the walbro carbs to but those are not for the beginner as they need pulse lines drilled and tapped into the case or jug

please dont list ways to waste money or selling speed. A 48CC cannot use even a 16mm carb. It is proven the cdi are retarded bandaids costing near 100 bucks.
finaly i state that items that only quiet and increase service life absoluetly should be listed wich would be short and sweet. OTHERWISE IT BECOMES A SHOPPING LIST FOR TYPISTS.

that being said i like it anyway. great job!

I'm close.

this is some bs. stuff your crank and let me know when ur ready.

I think it's time you showed us some of your work Sub!

yes to that showboat idea. however my rudeness wasnt directed at you theon but at crankstuffing in general i think its ridiculas.
like stuffing cranks will make up for **** exhaust. BS!

mew905 said:

The less gas/air that gets sucked into the exhaust = more power
will have.

Click to expand...

Sorry but I fail to see how wasted fuel out the exhaust has any bearing on the compression stroke, sure your economy will go out the window, but so long as your AF mix is correct and the cylinder is full then power should remain the same.


Also,
FWIW it is not necessarily faster OR the slower the burn, the more power.
It is getting the right compression ratio to suit the octane rating you are using.
This is why we use higher octane fuels with higher compression, they slow the burn rate.
If it just went band instantaneously with the piston at 12o'clock it would probably bend the conrod.

Simply upping the cilynder compression and case compression and swapping the bearings and porting for around 7,000 along with a good x chamber tunned to that rpm range for broad power and around a 16-18 mm carb puts this style ht motor right where it needs to be even running it strait piston port

i wouldnt ask any more from a china girl without risking hera short life and quick death