So I just ran the class final at Indy.......

Billy Nees · 12-22-2019, 03:44 PM

The other Racer is running the exact combo as I am (I know pretty far fetched but stick with me). We both go fast. We both get an invite to the barn. Tech inspector first checks both carbs. His carb checks OK for throttle bore and venturi as per the guide. My carb checks too small but is the correct # carb for the combo as per the guide.
His carb is way too big for the # of the carb that is listed in the guide. My carb is way too small for the numbers listed in the guide (plus .005 or minus .015) but it has the correct PN as listed.
Who gets tossed? Why?

Gary Parker · 12-22-2019, 03:55 PM

Way to easy Billy. If both carbs do not meet the specs... both get bounced.. if valves are to small you would get bounced. if dish cc's are to small you get bounced. not in specs... not legal

NORMAN BARNARD · 12-22-2019, 03:56 PM

Billy, being from the carolina's an also run there. The answer 's
is,,the guy with the biggest gun.....(just kidding)...

Correct answer is the spec. Size of the carb. That's specified, but not "bigger". If the guy with the smaller carb. Is faster, better look
for a vacuum leat above the throttle blades or some mods. To the booster cluster.... (old trick)

Bob Shaw · 12-22-2019, 04:31 PM

Billy, you would never be in that situation because you would have known in advance that the specs were wrong and had them corrected. If this actually did happen you probably would get bounced. His carb is legal and yours is not.

Ed Wright · 12-22-2019, 05:59 PM

Billy would never have the wrong size carb, but why would a carb larger be OK?

Bob Shaw · 12-22-2019, 06:50 PM

Quote:

Originally Posted by Ed Wright

Billy would never have the wrong size carb, but why would a carb larger be OK?

The larger carb checks OK per NHRA specs.

Billy Nees · 12-22-2019, 07:20 PM

But Bob, the guide is contradicting itself. Why should a competitor be tossed for using the correct, OEM carb?

12-22-2019, 03:44 PM	#1
Billy Nees VIP Member Join Date: Oct 2002 Location: On a hilltop in Pa. Posts: 4,485 Likes: 3,587 Liked 7,682 Times in 1,730 Posts	So I just ran the class final at Indy....... The other Racer is running the exact combo as I am (I know pretty far fetched but stick with me). We both go fast. We both get an invite to the barn. Tech inspector first checks both carbs. His carb checks OK for throttle bore and venturi as per the guide. My carb checks too small but is the correct # carb for the combo as per the guide. His carb is way too big for the # of the carb that is listed in the guide. My carb is way too small for the numbers listed in the guide (plus .005 or minus .015) but it has the correct PN as listed. Who gets tossed? Why? __________________ Billy Nees 1188 STK, SS I'm not spending 100K to win 2K

12-22-2019, 03:55 PM	#2
Gary Parker Senior Member Join Date: Apr 2004 Location: Westfield Mass Posts: 528 Likes: 366 Liked 418 Times in 55 Posts	Re: So I just ran the class final at Indy....... Way to easy Billy. If both carbs do not meet the specs... both get bounced.. if valves are to small you would get bounced. if dish cc's are to small you get bounced. not in specs... not legal __________________ Gary Parker 1617 STK

12-22-2019, 03:56 PM	#3
NORMAN BARNARD Member Join Date: Mar 2006 Location: EL PASO, TEXAS Posts: 156 Likes: 0 Liked 2 Times in 2 Posts	Re: So I just ran the class final at Indy....... Billy, being from the carolina's an also run there. The answer 's is,,the guy with the biggest gun.....(just kidding)... Correct answer is the spec. Size of the carb. That's specified, but not "bigger". If the guy with the smaller carb. Is faster, better look for a vacuum leat above the throttle blades or some mods. To the booster cluster.... (old trick)

12-22-2019, 04:31 PM	#4
Bob Shaw Member Join Date: Jan 2002 Location: Sedalia, Mo Posts: 436 Likes: 320 Liked 314 Times in 61 Posts	Re: So I just ran the class final at Indy....... Billy, you would never be in that situation because you would have known in advance that the specs were wrong and had them corrected. If this actually did happen you probably would get bounced. His carb is legal and yours is not. __________________ Bob Shaw V/SA 515

12-22-2019, 05:59 PM	#5
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 390 Times in 170 Posts	Re: So I just ran the class final at Indy....... Billy would never have the wrong size carb, but why would a carb larger be OK? __________________ Ed Wright 4156 SS/JA

12-22-2019, 07:20 PM	#7
Billy Nees VIP Member Join Date: Oct 2002 Location: On a hilltop in Pa. Posts: 4,485 Likes: 3,587 Liked 7,682 Times in 1,730 Posts	Re: So I just ran the class final at Indy....... But Bob, the guide is contradicting itself. Why should a competitor be tossed for using the correct, OEM carb? __________________ Billy Nees 1188 STK, SS I'm not spending 100K to win 2K