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Author Topic: thai 120  (Read 6523 times)
msl1973
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« on: January 25, 2010, 01:53:04 AM »

is there a rule yet on thai 120?
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ctaylor
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« Reply #1 on: January 25, 2010, 01:57:28 PM »

The thai 120 will not pass tech. Carb size and head design.
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skarnes
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« Reply #2 on: January 25, 2010, 04:05:36 PM »

What is wrong with the carb size on the thai 120?
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ctaylor
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« Reply #3 on: January 25, 2010, 05:18:38 PM »

it is smaller
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sfreitas20
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« Reply #4 on: January 27, 2010, 02:12:22 PM »

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?
« Last Edit: January 27, 2010, 02:25:17 PM by sfreitas20 » Logged

Scott Freitas
Patriot Motorsports Inc.
Toeknee
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« Reply #5 on: January 27, 2010, 03:16:13 PM »

Is USAC allowing the Thailand 120 & 160? either, neither, both? Thanks
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Tony Lofton
Driver: Bubba #5
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« Reply #6 on: January 27, 2010, 03:36:00 PM »

Both 120 and 160are not legal with usac, they are legal for qma
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sfreitas20
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« Reply #7 on: January 27, 2010, 03:40:49 PM »

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?
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Scott Freitas
Patriot Motorsports Inc.
Toeknee
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« Reply #8 on: January 27, 2010, 03:56:50 PM »

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?
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Tony Lofton
Driver: Bubba #5
Lofton Family Racin'
skarnes
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« Reply #9 on: January 27, 2010, 04:00:26 PM »

Is there advantage to having a smaller carb?Or is the bigger carb better besides the jetting.
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sprintcar39
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« Reply #10 on: January 27, 2010, 04:35:10 PM »

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.
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Eric Rankine
USAC Director of Competition
NWOQMRA - USAC .25
USAC - HPD Midget - Midwest Series
USAC National Midget - Spike/Esslinger
ezoner
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« Reply #11 on: January 27, 2010, 04:49:37 PM »

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..
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sprintcar39
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« Reply #12 on: January 27, 2010, 05:11:54 PM »

ezoner - who does your honda engines?
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Eric Rankine
USAC Director of Competition
NWOQMRA - USAC .25
USAC - HPD Midget - Midwest Series
USAC National Midget - Spike/Esslinger
ezoner
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« Reply #13 on: January 27, 2010, 05:17:34 PM »

Ziggy
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ezoner
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« Reply #14 on: January 27, 2010, 05:20:10 PM »

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.
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