Oh boy... let us know what that runs dollar wise.

Might need a good review on switching heads too. [img]i/expressions/face-icon-small-smile.gif[/img]


The KPX and Yerf heads are exactly the same size then... not like the Dazon head which was taller?

Any other big issues in switching heads?


-Steve

 

East side also has a replacement filter, and should sell you proper jets as well. The 2005 models of some of these carts are coming with a newer CDI. I also mentioned another performance motorcycle CDI on ebay earlier in the thread I believe. Who knows about the coil though.

 

Will the Yerf head fit the Twister? Mike

 

Mamurray, Check out some of Raptoraz's earlier posts. One of his has a yerf head on it. He tried a dazon head but it was physically too long for the bolts keeping the head on.

From the sounds of it, it was a direct swap... but I'm curious too if there were any kinks along the way or not.


Does Yerf sell the head directly or do you have to go through a dealer???


-Steve

 

bickel76, I think the pipe made the biggest difference, the intake made little in comparison but does a much MUCH better job at trapping dust. If you are just out to have fun, the four wheelers shouldn't be hindered much by the karts ability. There was however a pretty large improvement between the first time I went (no pipe) and the second time (with pipe). I believe your cart was a 125 so that may be an issue also. I had absolutely no problem with hills but my brother driving his rhino could blow past me anytime he wanted.

As far as KPX's and Twisters and even the 2005 Twisters being different, I am not sure. However, when viewing the Carter Talon at Gander, the motor, reverse, Etc. was exactly the same as my 2004 Twister. When viewing the pictures of KPX's, I can tell differences like the bracket that holds the reverse assembly is completely different than mine. The 2005 gearbox on the twister looks slightly different and is a different color. Some of the stuff like more horsepower maybe marketing hype. Since twisters are marketed at a higher price level and have a few more options, they may come standard with some of the things kpx is saying is now an improvement. Comparing the carter with mine, every single engine feature looked just like mine, it also had the place for a trailer hitch. Then youve got the fact that the 2005 twister is already out and has alloy wheels, snorkel etc.

gotta go do some work now.

 

Kell, if you are able to, let us know the manufacturer (if printed) and any serial numbers on your Carburator. I'm curious if there is a difference there in brands or not. Next time I get a chance I'll take some close up digital pics of various engine parts to see if I can compare a few things.

The XTV by Carter has what appears to be a pretty high quality Keihin carb. Manual choke though... but I like it that way.

 

You can buy Yerf parts directly from Yerf-Dog.

As for the swap, when I did it, I had the whole Yerf motor. So I swapped over the entire upper end(cam, head, jug, and piston). The swap was a direct bolt on. I measured everything at the time, and it all seemed the same, other than the Yerf's larger valves and combustion chamber.

This next swap will be a head and valve swap only(it'll get milled this time though, for more compression). So I'll let you all know. It should be done within the next week or so.

Also, the Dazon head was a bust because the KPX's cam chain being too short, not the bolts.

 

I posted in a hurry earlier, I AM NOT saying Twisters are better than other carts and am not trying to justify my spending roughly a thousand more dollars on mine. If I had it to do over I would definetly order a KPX and save the cash. I was only saying I think Twister markets theirs better and has MANY more dealers. I think this is the reason they seem to come out with updates before the others. I am not sure how this works because obviously they are made in the same factory at the same time. I guess they just specify different components. The carter even had the same goofy square badge thing welded to the grill like mine, it just had a different sticker on it. (I hacksawed mine off immediately anyway)

As far as the carb it has a big K on it and says made in japan, electronic choke. I wish it had manual, because I worked on a kids quad that had this goofy elec. choke and it is nothing but trouble, I finally just converted it to a manual. I know Keihin (sp) jets fit it, but am not sure if it is a copy. the K looks like the Keihin tm. On a side note, I checked out the engine and it had the 125cc carefully ground off, so apparently it is the same casting as used by both 150 and 125.

I will be very interested to find out if the Yerf head alone just bolts on.

 

Kell,

Not sure if you saw this info before, but apparantly there is going to be a large mid year change in the Twister line which is going to involve some engine modifications starting some time in late December. Larger valves and an oil cooler are said to be added according to one of the Reps in China. Supposidly this will make the twister carts more powerful than others on the market at that time. We'll see, I guess. Kind of strange that they didn't have the engine mods ready for a 2005 model year release, but better late than never, I suppose. Rep said the price would remain the same. Said he saw one doing 45mph on flat ground.

-Steve

 

No, I haven't heard about any changes beyond what I have already seen. Not sure why they would want to do much more to this engine, why not just make it bigger? I don't see an oil cooler adding much, I haven't had any overheating problems. One of the things I like about it is the simplicity. Adding a bigger carb sounds like it would take some low end torque away from it, which is where your hillclimbing needs it most. As far as 45mph on flat ground, mine may reach this before hitting flat ground, after falling off a cliff.

I would like to know how everyones reverse cable has been breaking? I would like to prevent this if I can, but I can't find a weak spot in mine. Are they talking about the housing breaking or the cable itself? Is it visible, or if it is the cable itself, is it right where the housing enters the noodle right before the reverse assembly?
thanks