intake manifold/carb
Race Director
Joined: May 2003
Posts: 10,956
Likes: 409
From: California
You guys are far beyond me in knowledge in ref. to carbs. I just want to know why more guys aren't using Q-jets at the drag tracks. The guys who are winning at the big tracks know their stuff when it comes to carbs, and even though it's harder to dial-in a Q-jet, you'd think they would beable to get the job done. And even though there is little advertisement f/ the Q-jet and therefore less aftermarket hype, if the guys who are "winning f/ the money" would be winning more w/ a Q-jet, wouldn't they be running the Q-jet rather than other available carbs? I know quite afew guys who are very knowledgable and who aren't sponsered, and if they could run faster w/ a Q-jet, you bet they would be doing it. Are Q-jets a bettter application on certain engines and not f/ others? In this day and age, if Q-jets were a faster application, they would be known as such. I personally have had good luck w/ all of them, Q-jet, AFB, Edelbrock, etc., but just like was stated here, the AFB/Edelbrock type design is easier to work on, and the Q-jet took some doing. Just asking afew questions as I know you guys are up on this stuff. Thanks in advance.
Race Director
Joined: Jan 2000
Posts: 12,399
Likes: 247
From: San Jose CA
You guys are far beyond me in knowledge in ref. to carbs. I just want to know why more guys aren't using Q-jets at the drag tracks. The guys who are winning at the big tracks know their stuff when it comes to carbs, and even though it's harder to dial-in a Q-jet, you'd think they would beable to get the job done. And even though there is little advertisement f/ the Q-jet and therefore less aftermarket hype, if the guys who are "winning f/ the money" would be winning more w/ a Q-jet, wouldn't they be running the Q-jet rather than other available carbs? I know quite afew guys who are very knowledgable and who aren't sponsered, and if they could run faster w/ a Q-jet, you bet they would be doing it. Are Q-jets a bettter application on certain engines and not f/ others? In this day and age, if Q-jets were a faster application, they would be known as such. I personally have had good luck w/ all of them, Q-jet, AFB, Edelbrock, etc., but just like was stated here, the AFB/Edelbrock type design is easier to work on, and the Q-jet took some doing. Just asking afew questions as I know you guys are up on this stuff. Thanks in advance.
Le Mans Master
Joined: Jun 2004
Posts: 6,231
Likes: 65
From: Seattle WA
St. Jude Donor '14
...and tuning parts availability is poor overall, while Holley parts are available just about everywhere.
Racer
Joined: Oct 2003
Posts: 424
Likes: 9
From: Killeen Texas
But these guys DO get their cars dialed-in and finished. They would dyno the car and run what runs best. They would have that down. And if the Q-Jets ran that well, then there would be available parts out there also.
Race Director
Joined: Jan 2000
Posts: 12,399
Likes: 247
From: San Jose CA
Besides, street drivability isn't all that important in a car that's trailered to and from an event. I think most of these cars are willing to trade idle/off idle response for something that saves them a ton of time dialing in WOT.
Race Director
Joined: May 2005
Posts: 10,674
Likes: 122
From: Millington Illinois
St. Jude Donor '08-'09
The main thing is ease of adjustment and parts availability. On a strip car and in the dyno room your typical race oriented machine shop can dial a holley in for best WOT operation in no time with readily available parts. In a mostly street application a properly tuned qjet is tough to beat for fuel economy and overall performance. It is one of the best street/strip carbs ever made and worth the extra time and effort to properly tune for your specific engine combination if you already own a good one.
