6/20/07
Nolimitpkr
Qjets are cool carbs. I have a mild 383 and I was able to break into the 13’s with a Qjet, which I am kind of proud of. Especially with 3.08 gears, and only a 2100 rpm stall. If you guys have any inclination of street driving go with the Qjet, great performance and awesome manners on the street.
SMI is really good, they answer all of my Qjet questions and I didn’t even buy the carb from them, so what does that tell you???
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Coloradok5.com-
3/19/2006
Noahrob
OK, so we did some recon this weekend, and here is what I have learned…The qJet is infinitely better than the Carter I had before. On hills that I used to stutter out on, the truck ran strong. I finally got it to stall out when I accidentally got pinned with my front up on a ridge and my rear bumper was wedged on the ground…Even then I technically stalled because my clutch lever fell off and I was still in gear. After being stuck like that for almost 15 minutes, I finally got the truck down and it started up pretty much right away.
Other interesting points. The electric choke is great and works very well, makes cold starts much easier. The transition from fast idle to normal idle works as it should.
Freeway cruising is much much better. Specifically, there is no hesitation when I mash it from cruising speed. Also, the fuel delivery seems much more linear while at cruising speed. No popping on rolling slow down.
The bad. After one particular jag, the truck dieseled pretty badly. However, I am pretty sure that it is a result of something I did during setup.
So, my conclusion is that I am very happy with this carb, although I can only compare it to the Carter that was on before and other cards I have had, not the Truck Avenger.
Noahrob
8/8/06
I got mine from Sean Murphy and have been happy so far…just thought I would chime in…
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Reccomendation Letter-
After Almost 50 years of working on all types of vehicles from gas golf carts, family cars and supercharged show and drag strip cars.
I want you to know about the best carburetor man and company I have ever seen or come across.
Sean Murphy is the best you will ever find and you can reach him at SMI.COM
Sean is a dedicated perfectionist and has superb customer relation skills and produces a great quality product for each customer.
When you find the best it is really impossible to applaud their efforts and skills to the highest level so let it be known, there is the best and then all the rest and Sean is the top person if you want the best.
Take the time to contact Sean and you will appreciate his high quality workmanship and his extremely fair pricing.
I am a Real Customer of SMI and can be contacted at grigolf@usa.com for verification. No one has paid me or prompted me to reccomend Sean and SMI I have done so because I am truely impressed with the quality of all of Sean’s Skills.
Mike S.
Las Vegas, NV
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Dear Sean,
I would like to take a minute to Thank You for such great service. I received my carb on time and your company then express mailed the bolts and fittings, I bolted the carb up and adjusted my linkage, turned on my fuel pump, and it fired instantly. I adjusted idle mixture slightly and set the idle. My El Camino has NEVER ran this good, I’ve had this motor and trans combo in 3 other cars and it NEVER ran this good. Thank You Very Much, its a shameto cover up such a great looking carb.
Sincerely,
Mark Wood
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Dear Sean,
I just wanted to thank you for the modifications you made on my carburetor for my Chevelle and the tune-up. The car runs great and I am really enjoying it.
Sincerely,
Mark Ben
1970 Chevelle 454
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Hello Sean,
I received my Qjet last friday and installation was easy, no problems at all. I fitted the pressure regulator with an in line filter between it and the carb, switched on the pump, waited a few seconds for the carb to fill up, two pumps of the pedal and it fired up instantly. Idle is now smooth and acceleration is relly strong and crisp, I just had to turn one idle jet about a quarter turn and adjust idle stop screw a little bit. It’s a completely different driver now compared to when I had the square bore holley on it.
Thanks again Sean.
Liam Ferncombe
Thurles, Ireland
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Sean,
I just wanted to get back to you and tell what a wonderful job you did on my carburetor. I recieved it and the finish was awsome. I installed the carb on my car and it fired up and idled great (hardley any adjusting done) Took
it to a car show and it ran the best it ever has. Thanks for such great service and getting that carb to me. I am very satisfied and just as soon as I finish up another car I will order another carb from you.
Thanks
Keith Hartman
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Sean,
I just thought I would follow up, as promised, with the results of my Rhoads lifter installation, and how closely matched your rochester carb was.
Before, I was getting roughly 10″ of vacuum at idle, and both you and I predicted that the Rhoads lifters should increase that by 3 or 4 inches…thus, you constructed the carb with this in mind.
Well, you nailed it with your choice of power piston spring. Before, the car was bogging and lurching with the other lifters (or 10″ of vacuum). Now it runs smooth and cruises at just above idle with no problems what-so-ever.
I will be referring others to you.
Thanks,
John
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Good day,
I received the quadrajet carb last week and I thought I would give you some feedback on the results.
First, let me say that it?s almost a shame to cover up such a beautiful carb with a large air cleaner. High marks for appearance.
Second, the divorced choke works perfectly. I had to adjust the choke idle screw initially, but it works flawlessly.
Lastly, it runs quite noticeably better than it did before. The only thing I might need to contend with is that it does not want to cruise (just off idle)without constantly hesitating and surging. Same problem I was experiencing with the other carb (also a quadrajet).
I realize you designed and built this thing with the presence in mind that I will be installing a set of Rhoads lifters, which I am going to do next. I fully expect that this will bring the vacuum up to what you designed the carb for. I have a set of these lifters in my truck, and let me tell you that they really work.
I will let you know the result of this, for your perspective.
I will also be referring others to you.
John Hamalian
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Sean,
I wanted to let you know how happy I am with the performance of the Stage 2 Q-jet I purchased from SMI. It is better than any brand new carb I?ve ever dealt with. The only thing I adjusted was lowering idle about 100 rpm. Everything else is right on. No miss, stumble, or hesitation. It made my 383 feel alive! I?ll look forward to dealing with SMI with any future projects.
Thanks,
Joe Krajkiewcz
Grand Rapids, MI
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