my friend has a trail bike 108 stroker kit and its awsome, great reliable parts, good quality and good price

 

BBR's engine parts probably will do the job fine. It sounds to me you have carb issues. What carb do you have on the bike? What exhaust do you have on the bike?



Unless you want to bore the cases for a 54mm cylinder and go with a 117-124cc engine and drop some $$ into more displacement, keep what you have and look into a different carb.

 

I have a Mikuni VM26 carb that came with the kit and the new BBR D2 pipe.

I have tried the 140,150,170, and the 190 main jets, the clip in various positions, and 20 , 22.5 and 25 pilot jet. Right now I am using a 22.5 and 140 main with the clip in the 4th from the top. air screw about 1/2 out. It might run a little rich with this setting. A little black smoke comes out when we gas it when we are just warming it up, but so does my CRF 450



I change the clip position a lot throughout the day. Up and down from 2-4 position. Some times the bog is terrible, as when we twist the throttle fast, it will die. Sometimes we can turn the throttle fast and rev it hard for 2 seconds and turn it off momentarily (like one second) and back on and it dies. any suggestions?

 

give a call ,im sure we can get you fixed up

 

Does anyone know what kind of power this kit puts out? That way I can compare apples too apples

 

A VM26 with a 106cc displacement is too big unless you are road racing. I would strongly encourage you to drop down to a 24mm carb. You probably have a ton of low end bog and then it cleans up in the upper RPM range.



Yoshimura 24mm carbs are the best available on the market, bar none.



The 106cc kit should be putting down anywhere from 9-10.5 hp depending on the state of tune and supporting componentry.

 

Hi there, I sent you an email.

 

What head are you running?

 

I am running this kit with a BBR D2 pipe

BBR Motorsports, Inc - Browser Support Page



Page down for the 106 kit. It comes with a BBR head, Cylinder, cam, VM 26 carb, HD clutch, gaskets, crank, piston, valves,etc

 

You need a 24mm carb and your issues will be solved unless you want to toss a bunch of $$ at the bike going for bigger displacement. A VM26 is better suited for a 117-124cc high-performance engine.

 

I run the 106 stroker w/keihin 24 it's a very solid set up

 

Last night I talked to BBR and talked to Brent Brown and he thinks we have an air leak in the manifold. He is going to send us a new manifold and carb to try and thinks that from what I told him this will fix our problem. I cant thank the guys at BBR enough. They have been very helpful and they really go out of their way to satisfy a customer. They were as concerned as I about my child getting hurt and I thinkthey really stepped up to the plate!



They have told me that the 106 kit is a great bolt on kit and that they have had a lot of success with it straight out of the box. They also said we shouldn't have a bog, and that the wanted to get to the bottom of this. My hats off to those guys!! I am glade that the money I have spent on my bike so far has benefited these people!! They are true racers and they have a customer for life!!

 

yep bbr in my eyes are prob. the best pitbike manufactres in the buisness

 

You can polish a turd anyway you want to look at it, but a VM26 is too big for that 106 unless you are road racing. A 24mm Mikuni or Yoshimura carb will tune and run much better.



BBR is a great company, but their private line of engine parts are completely overrated and overpriced compared to other offerings in the market.

 

Get ahold of Mark @ AHP minis.For some reason I think Tyrone is right by where he lives(from memory).Bring the bike over to his shop and he will get it going for sure.Weather that means tuning the carb thats on it or throwing a 22 or 24mm carb on there he will get the job done 100%.I ran a 24mm carb on my 108 and it worked great.

 

Yeah...I think you have everything you need for a great setup (carb excluded) but you just need to get it all dialed in better. Don't buy anything more....unless you want the carb.



As for your clutch kit its a great upgrade, but it won't make your engine run any better. I had the Kitaco Ultra Clutch on one of my engines at it was awesome. Just get it tuned right.

 

I got a 24 mm Kehin carb from one of the companies on here. Still bogs a lot and doesn't seem any better. stock brass (35 pilot, 95 main) and tried neddle in different positons. runs best with the neddle all the way down and the air screw turned all the way in. Otherwise if I just blip the throttle it dies. So I am thinking it is real lean. Any suggestions??

 

U ever thought of just getting a GPX crate motor? I have heard good things about them. It might b a cost effective and quick fix...

 

Just a suggestion, if you're running that filter that came with the kit, you might wanna thing about getting a prefilter.

 

I got a 24 mm Kehin carb from one of the companies on here. Still bogs a lot and doesn't seem any better. stock brass (35 pilot, 95 main) and tried neddle in different positons. runs best with the neddle all the way down and the air screw turned all the way in. Otherwise if I just blip the throttle it dies. So I am thinking it is real lean. Any suggestions??

Where your carb settings are right now makes me wonder as your going in two diff direction . The needle is all the way down as this will let less fuel into the emultion tube . But on the other hand , you've got the air screw all the way in which is cutting off the air into carb so it will use more fuel .



From my personal experience with this same senario , I think your still way over carb'd .



I went thru a similar situation with my Kitaco 106 set up .



I tried a 24mm Shengyway carb that ran great up top but bobbled really bad from a stand still . I had smaller pilots to try but no smaller mains at the time . The smaller pilots didin't do any good .



I gave up on try'n to tune it but I knew I needed to try a smaller main but never persued it again cause it's back to an 88cc motor .



I called CHP , which is where I get my stuff from and was recommended to go back to my 20mm Kehin for the dirt . I did .., and it worked flawlessly !!

 

I see where your confusion is. I have the needle in the lowest clip position, which would make it richest setting. Sorry about the confusion. I think it is still over carburated for the kit. I listened too everyone on here and they said go to a 24 mm and it will clear up. Oh well, live and learn. The bike runs much better than with the 26mm, but not to my satisfaction. thanks for the info.



Greg