flyboy367
06-01-2007, 04:09:49 PM
looking for opinions and experances here. for a get in and quickstart strait to a heavy use of the throttle which is worth the work?
i have a edlebrock performer carb on my car now. aparently i got a mutant cause my e-choke kit does not fit the carb at all as in it has no place to bolt into. i want to upgrade induction but dont know if i want to load out for efi just yet. would a qjet be worth it for a rebuilt one and toss on say an airgap manifold and be able to hound it or would a different carb workout? right now if i dont manually rock the choke up and rev for the first min or 2 she dies out. i had my carb set by the guy i bought the car from and still it takes to long imo to get a good run when my firepager goes off. i usually wind up sitting feathering the throttle for a while then being able to pump it.
Damon
06-01-2007, 09:10:21 PM
A properly functioning electronic choke system will allow for good start-and-drive behavior. Not the equal of a properly tuned EFI system, but if it's tuned right you can fire it and throw it in gear in maybe 10-15 seconds without it dying out and drive realtively normally. It will not only close the choke with a tap of the gas but it will pop it open slightly when the motor fires to prevent flooding it, as well as raising the idle speed when the motor is cold and the choke is on (there is a fast idle cam linkage built into the choke system on most carbs- boat carbs are the only typical exceptions to that rule).
IF PROPERLY SET UP a Qjet electric choke system is nearly bulletproof- typically less flaky than Holleys and Edlebrocks, judging by the many posts on this board about electric choke issues with those other carbs. Qjets were OEM carbs so that means they needed them to work reliably for many years for joe-consumer who didn't know or care about his carb or it's choke system. Properly set up is the key here. It's easy to set them wrong and if you do they'll continue to be wrong every time you start it, too.
There are no air gap manifolds for QJets (other than the base Performer with Air Gap). The Performer RPM air gap is a squarebore-only intake (Holley or Edelbrock carb). The Performer RPM NON-air-gap is available in a QJet (spreadbore) mounting flange configuration, however. And, by the way, if good drivability on a cold engine is one of your goals you probably don't want an air-gap style intake anyway- at least not in cold weather/climates. The exhaust crossover passage in a non-air-gap intake helps heat the plenum floor below the carb and quickly promote good fuel atomization. A big key to cold engine drivability with a carb. Leave the air-gap style intakes for your weekend street/strip ride.
flyboy367
06-02-2007, 08:08:38 AM
so what is in fact a properly setup qjet? whats needed?
Damon
06-02-2007, 08:39:01 PM
Means it's not only tuned and jetted correctly but all the various adjustments on the choke are also set correctly. Varies from motor to motor. Your engine will need what it needs to run properly. There are rough guidelines but you have to dial it in to your particular combination- no way to say exactly how it would need to be adjusted until it's sitting on top of your engine.
flyboy367
06-02-2007, 08:46:09 PM
i was referring to do i need any sensors to run it properly or just the carb itself. out of all the cars i have owned i think only my monte ss had a qjet and the third day i had it i sold it to a friend that dropped in a tpi 327