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how 'bout, quit beatin' the **** out of your motor? set an rpm max of 10,000. anything beyond that for an extended period of time is not healthy, especially for a crank mounted clutch. play around with it once in awhile, but don't hang there.
 
rc164racer said:
Im on both side as far as real and china motors go. I got a takegawa 88 race head kit ported and polished with a ahp 4 speed tranny. Also have a gpx 124 motor. Belive it or not but the gpx motor is faster. I have ran her super hard and have had no problems. So I dont know which side to fall on. Used to be against china motors but mine is holding up. Just needs clutch plates.


Ive had the stage 3 tb kit, ran stage 2, and also had gpx 125.. here my conclusion..

China is great for cheap power, some are dependable, others not so much.. I have a buddy who has had great luck with china motors and then theres me...

Unless you run the 4speed kit in your 88cc, they will run on you up top and have better torque. But...

I blew up 124cc gpx, that had less than 10 mins of run time. 3rd gear lost a tooth and snapped my connecting rod, broke the piston skirt, and piston. The motor gernaded on me and left a baseball size whole in my motor.

Ive put the beating on the 88cc motors and not one problem. Usually when something goes bad, its usually installed wrong or user error.

So in my closing statement..

Dont rev the sh*t of either motors, and you should be ok. Just a better chance going with honda.
 
So let me ask you guys this ... Some of you say his parts are China made and Mike put this up on his web site ..

What gives ... :confused:





-----------------------------------------------------------------------



Trail Bikes Performance Parts Information





Our goal at Trail Bikes is to provide affordable performance parts to pit bike enthusiasts who cannot afford to spend $5000 on their little Honda. There are many retailers who sell $1000 bore/stroker kits, $1300+ frame/suspension kits and a host of other expensive parts. There is no doubt these are good parts, but they are out of reach for many people who would also like to get more enjoyment out of their stock bike.

Trail Bikes big bore kits and other performance parts are composed of high quality parts that are manufactured to our specifications. They have proven to be extremely reliable over the 5 plus years they have been on the market. The bore kits are not made in China (as many of our competitors like to say) and we use the same manufactures as the big Japanese companies to produce many of our parts such as the cylinders, camshafts and heads. Trail Bikes is the only distributor of Trail Bikes products and the parts are shipped directly from the manufacturing facility to Trail Bikes. When a product is purchased from Trail Bikes, it has not gone through several middlemen and thus, the savings goes to the consumer.



This is the typical flow of bore kits purchased from a local dealer:



Manufacturer > Japanese Company > US Distributor > Dealer > Consumer



This is Trail Bike’s flow:



Manufacturer > Trail Bikes > Consumer
 
JohnnyB said:
So let me ask you guys this ... Some of you say his parts are China made and Mike put this up on his web site ..

What gives ... :confused:





-----------------------------------------------------------------------



Trail Bikes Performance Parts Information





Our goal at Trail Bikes is to provide affordable performance parts to pit bike enthusiasts who cannot afford to spend $5000 on their little Honda. There are many retailers who sell $1000 bore/stroker kits, $1300+ frame/suspension kits and a host of other expensive parts. There is no doubt these are good parts, but they are out of reach for many people who would also like to get more enjoyment out of their stock bike.

Trail Bikes big bore kits and other performance parts are composed of high quality parts that are manufactured to our specifications. They have proven to be extremely reliable over the 5 plus years they have been on the market. The bore kits are not made in China (as many of our competitors like to say) and we use the same manufactures as the big Japanese companies to produce many of our parts such as the cylinders, camshafts and heads. Trail Bikes is the only distributor of Trail Bikes products and the parts are shipped directly from the manufacturing facility to Trail Bikes. When a product is purchased from Trail Bikes, it has not gone through several middlemen and thus, the savings goes to the consumer.



This is the typical flow of bore kits purchased from a local dealer:



Manufacturer > Japanese Company > US Distributor > Dealer > Consumer



This is Trail Bike’s flow:



Manufacturer > Trail Bikes > Consumer


That's because there are alot of people are either given false information by others (or by other vendors) and some just like to stir the pot.



None of the Trailbikes engine parts are made in china. None. Zero, Zip. Nada.



Made in Taiwan. Look at the boxes the heads and cylinders come in.



Look for the gold sticker on the bottom. You think Trailbikes would waste their time to put a tiny gold sticker on all the cylinders and heads just for fun? It's a customs import reg that needs to be followed.
 
Nope. A little lube might be a good idea though.



The failure was caused by over revs likely caused by either WOT downhill with short gearing, or mistiming the neutral/throttle chop. That will bend Tak valves too... Valve float WILL happen at some point, regardless of whose springs are used, or they'll be so stiff the cam and rocker get wiped out in short order.



If it was seized and hung open, it could be from tight clearances, and galling from a lack of lube, or the extended high rpm with lean mixture. Air-cooled engines hate that even worse than juicers.



Lots of perfectly good firearms shoot their owners in the foot...
 
Discussion starter · #92 ·
JohnnyB said:
Could this have also been a factor ??



The slack in the timing chain go'n from idle to instant over rev ?




In my case it went from overrev, then spun free(higher) for .10 of a second then to idle.... not idle to over rev. I never put it back in gear til I slowed. I was trying to get as much as I could out of the motor but was using a BIG downhill to go for a little more. I bet had I been on flat ground..... it NEVER would have happened. We'll know soon cuz I'm going to put it all back together and do the same exact thing..... but on level ground. Done it many times with no problems. I may not make it a habit anymore but I'm going to push it on flat ground to make sure it's fine. If it breaks.... I know the limits and will build it stronger where need be.... including different springs.It's only money... and I want piece of mind. I'll let ya's know! I have total faith in the TB kit and am fully aware that I asked too much out of it when it failed. The big downhill was too much.



I think most of us at one time or another were trying to haul ass and the gearing was holding the bike back so we cheated by going to nuetral for a little bit.



It was my fault that it broke and now I know.





Z, so the TB kits DON'T use china springs??? That's comforting and I am reusing mine for the time being. I will eventually find out the correct spring rates and what I will be able to use or not use. I don't wanna just slap on 70 springs because they may not be right for the cam. Getting higher perormance springs that will work right and allow better performance will take awhile to track down. If anyone has any info regarding this..... please share! Thanks.
 
Discussion starter · #94 ·
firepower354 said:
Kibblewhite has some springs we use on the Lifan BVH's that will allow even bigger valve lots of revs. It's a single outer spring. Not cheap. Otherwise the ATC125M inners work nicely.




Awesome. Do you have a link to any info/page? A mechanic friend of mine also suggested using single springs. I definitely want to look into it. Thanks!



Do you mean using atc125m inners with the regular TB outers and/or using them with the high dollar kibbles?
 
kibblewhite.com. They have several options. The guy that knew which ones is gone now, along with all his tech posts... I have a pair of new ones for $55 shipped if you want them.



Yeah, ATC inners with TB outers, or both ATC springs. Adds up to about $50 for the 4 springs.
 
Discussion starter · #96 ·
firepower354 said:
kibblewhite.com. They have several options. The guy that knew which ones is gone now, along with all his tech posts... I have a pair of new ones for $55 shipped if you want them.



Yeah, ATC inners with TB outers, or both ATC springs. Adds up to about $50 for the 4 springs.




Awesome. Yeah, I will take them. I'll pm ya tommorrow about getting them. Thanks!!!





So, you think run them all alone or with inners?
 
OK so the same exact thing just happened to a friends bike. This is the 4th case of this iv heard/seen in the last week. Time for the tb head to come off my spare bike and be sold before the 4 cases I have heard about turns into 5. Let me know if anyone is interested.
 
Discussion starter · #98 ·
rc164racer said:
OK so the same exact thing just happened to a friends bike. This is the 4th case of this iv heard/ seen in the last week. Time for the tb head to come off my spare bike and be sold before the for cases I have heard about turns into 5. Let me know if anyone is interested.


What will you run in it's place? Something that is known to break? How do you know the SAME exact thing happened? The TB kits flat rip and are way better than any china motor that is chock full of china metal. Use your head, bro.
 
I am gonna run a ported stock head. I got three bike ones a tak 88 rh, ones a tb88 rh, and ones a tak 88 reg head ported. The tak 88 rh is a little faster than the tb 88 rh and the tb 88 rh is just barley faster than the ported tak reg head. Rather be just a hair slower than end up like my bro and friend. ;)
 
HRC said:
What will you run in it's place? Something that is known to break? How do you know the SAME exact thing happened? The TB kits flat rip and are way better than any china motor that is chock full of china metal. Use your head, bro.


try not bouncing the valve's when you are going down hill as you would'nt of broke it as no matter what you fit you will break it riding it like that,mini bike engines are not idiot proof or bullett proof.......:roll:
 
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