USAC Racing Forum

is there a rule yet on thai 120?

The thai 120 will not pass tech. Carb size and head design.

What is wrong with the carb size on the thai 120?

it is smaller

The carb issue is pretty easy to resolve...swap it out with one that isn't too small.  HOLD THE PHONES HERE...I just checked the tech manual from USAC and it doesn't say anything about minimum sizes on the carb, only maximums.  How could it be too small to pass tech if there isn't a minimum in the manual?

Whats up with the head design that will cause it to fail tech?

Is USAC allowing the Thailand 120 & 160? either, neither, both? Thanks

Both 120 and 160are not legal with usac, they are legal for qma

USAC posted a bulletin regarding the 160 from Thailand being illegal back in October, but there has been no update from USAC regarding the legality of the 120s.  Several members have said they are illegal, but that hasn't come from USAC that I have seen.

As was stated above, why are the 120s illegal?

Thx so no to the 160's.  My understanding is that the Thai 120's are dyno'ing stronger than the Jap 120 and have some of the same issues as the 160's, so why not illegal?

Is there advantage to having a smaller carb?Or is the bigger carb better besides the jetting.

Just one of the biggest problems with both of the engines is in the head. I would NOT expect to see a change in the specs to allow the new engine. I would think we will have an announcement from USAC anyday that will give all reasons for this decision.

What is meant by stronger?  More than 1/2 to 3/4 hp??  Sounds to me like it could be political and trying to force everyone to Animal..

ezoner - who does your honda engines?

Ziggy

I have 1 newer -- it may be fine, maybe 6-9 months old.  I have one thats a couple years old -- that one is fine.

Have you talked to him about the new Honda engines? What has he told you?

Obviously not.....  But sounds like I may need to make a call....

But -- this is one of the issues I have been raising that the cost of racing will get outta hand as the two sanctioning bodies make independent decisions and do not consider the cost to the racers.

When we get all the details you will see that USAC did consider the expense and the racers. USAC did not rush to any decision on this matter.

I have an AA engine for sale...........

Im about ready to call it quits and let the rich people play.

so USAC has not made a call on THAI 120. as long as they pass tech thats the way I read this.

Ezoner,
  Most of your posts are negative...  Maybe you should quit.  USAC has been trying to listen and do the right thing but as with on-track calls someone will always disagree and it seems you disagree with everything.  Let us know when your selling out.

OK FRITO -- DO YOU WORK FOR OBAMA....?

I am concerned about cost.  The idea is that this sport is for kids and should be focused at the local level, with as low a cost as possible.  I would be happy to discuss it with you anytime, that way we could have an actual exchange instead of quick posts.

usac has made a call on both motors it is a no at this time probably not till 2011 season so bring your teir 2's and tear 3;s and lets rock

noticed on quartermidgets.com a nice article about USAC and Honda working together reviewing the Honda Engine Platform for the future. Sounds like a good idea and thumbs up to USAC for doing the right thing by putting a hold on the new hondas until more good info is reviewed.

Ezoner,
  Without turning into a political thing he is our president so I guess I do kinda work for him.  They have done plenty to keep cost down on the local and national level.  I'm sorry you feel its USAC's responsibility to do everything for you.  Support your local track and encourage growth of the sport.  In doing so you'll have good family fun and the more people that participate will certainly keep cost down.  PM anytime you would like to discuss this.

I vote to go all Briggs! They have an R&D department and they are built and assembled in the good ole USA!

If the USAC rule book only states a max carb size (no min), then how can the smaller carb on the thai 120 be illegal?

If you are new to this sport and wanting to buy a motor what do you ask the engine builder?Is this thai motor only illegal in usac.

"If the USAC rule book only states a max carb size (no min), then how can the carb on the thai 120 be illegal?"
 When you change just one dimension it creates other dimension changes. Checking height of dump tube is relative to carb bore with current tech tools. To be able to allow these your looking at opening up tech dimensions, which creates the ability to play more, which cost $$$. Needing new tech tools to police cost $$$, let alone extra time and confusion during tech, and this is for just one part that is different.

 The changes in the carb is easy, its when you get to the head it becomes interesting.

 Just wait till 2012!!   

       

either way you cut it its  $$$$$$$. if i were a new guy entering the sport i would buy an animal. honda is on the way out. and if you have been in the sport a while,you are going to have one bad ass log splitter.

!!COMING SOON!!! usac sanctioned log splitter racing. Tree huggers beware