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9/27/10 12:06am - Original Message: 'Remanufactured Q-Jet'
daveo76
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Vancouver, WA - USA

Vette(s):
1976 Silver/Firethorn. L48, 4spd. Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.

Joined: 8/25/2005
Posts: 830
I posted a few weeks ago looking for a Portland area carb shop that can handle Q-jets.  Since then I've been thinking about possibly going the reman route.   The big national parts houses still carry them, it seems.  $250 + $50 core charge.  Hmmm....a professional rebuild and I could possibly be getting close to that number.  And then there's the worry that my old one is a bit warped from over-torquing the hold down bolts at some point (I was fighting some symptoms of a vacuum leak before I tore everything apart).  

So....anyone have any experience with these units?  Junk or possibly worth a try?  One thing I'm worried about: my existing carb doesn't have limiting caps over the idle screws (should itQuestionQuestion) would the new one have them?  I'm sure if it did and I made "modifications" it would void the warranty.  Anything else about a reman unit that would limit tune-ability?  

Thanks!
 Dave 


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1976 Silver/Firethorn.  L48, 4spd.  Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.
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9/27/10 9:38am - Reply: 'Remanufactured Q-Jet'
Gunslinger
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Frederick, MD - USA

Vette(s):
1969 convertible L71 427/435 4-speed black interior

Joined: 9/8/2003
Posts: 3398
It's been some years since I was in the auto parts business but I never saw an assembly line rebuilt carburetor of any brand worth a darn.  Most rebuilding businesses farm out their cores to shops that generally just clean and replace a few parts and box it up and send it out.  Using a Q-jet as an example...they give one part number for many applications and it really suits few, if any specifically.  The defect rate for such carbs was horrendous.

You're far better to have a qualified Q-jet guy rebuild your carb...if the base is warped from over tightening screws it can be trued up in similar fashion as cylinder heads can be.  He can build the carb specifically for your car (if you changed cams, heads or anything), and dial it right in while the engine is running.

I'm not saying you can't get a good rebuilt, but it still has to be built to the car...not just new jets, gaskets and a few other parts.  Maybe things have changed since I was in the business, but to my way of thinking, assembly line rebuilt carbs are little more than clean cores.


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Poet...Mystic...Soldier of Fortune. As always...self-absorbed, adversarial, c o c k y and in general a malcontent.

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9/27/10 4:13pm - Reply: 'Remanufactured Q-Jet'
yostusota
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York, PA - USA

Vette(s):
1969 daytona conv. all original 350 350 380 4 sp w/air..and hard top

Joined: 5/18/2010
Posts: 1518
Well Slinger not much has changed! Someday the Q-jets will all be gone and life will be easier..if they would have been built with a little more care things would be better now..your right also on how the carb needs to be built and tuned to the car..the rebuild kits they sell now are awefull..only good for a few gaskets..I have heard of one other member here getting a carb that was rebuilt from a well known company and cost a whole lot more than what you are looking at! I saw him at CFC and he told me he swapped the rebuilt one for a new carb! Not sure what brand. I know that with all the ones I have rebuilt and tuned for cars over the years that it takes time and patience and know how..if you don't have that available to you then it might be easier to buy a new carb altogether. oh and Slingers right about the clean cores thing..love that saying!
Rich

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My first parade at Carlisle 2010
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9/27/10 5:00pm - Reply: 'Remanufactured Q-Jet'
wetvet
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Lake Oswego, OR - USA

Vette(s):
1972 Steel Cities Gray T Top. Original Owner, Original Paint and Interior. The running gear has been rebuilt after 240,000 miles.

Joined: 10/17/2003
Posts: 540
Try these :
http://www.savastuning.com/

or,

R H Carburetor Service - (503) 256-4515

11125 NE Sandy BlvdPortlandOR 97220

 




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"It Takes A Little Longer To Do It Right"
"It Takes A Lot Longer To Do It Again"
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9/28/10 1:48am - Reply: 'Remanufactured Q-Jet'
daveo76
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Vancouver, WA - USA

Vette(s):
1976 Silver/Firethorn. L48, 4spd. Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.

Joined: 8/25/2005
Posts: 830
Thanks for the info guys - this is the kind of testimony I was looking for.  I was wondering if they used a "one model fits all" type of mentality -- sounds like it.  Reading sources like the Corvette Black Book shows that there was a lot of variability in carb model numbers, even in a single year. One can only guess that that variability makes it to difficult for the reman companies to try to exactly match every application.  

Well I'll continue down the path of finding a local shop to do the rebuild for me.  (Thanks Wetvet and others in my previous post for the recommendations).  But I'm sticking with the Q-jet.   At least for now.


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1976 Silver/Firethorn.  L48, 4spd.  Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.
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9/28/10 5:51am - Reply: 'Remanufactured Q-Jet'
yostusota
Former Member
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York, PA - USA

Vette(s):
1969 daytona conv. all original 350 350 380 4 sp w/air..and hard top

Joined: 5/18/2010
Posts: 1518
Great decision as I want to keep mine stock as well..when the Q jet is set up and working perfect it's a tough one to beat..I love it when the secondary's open up! One thing is going to happen, you will get frustrated and possibly pushed to the point of adding another boat anchor to the collection ..but if you keep at it you will learn a lot and be happy with it in the end.
Good luck
Rich


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My first parade at Carlisle 2010
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9/28/10 11:13am - Reply: 'Remanufactured Q-Jet'
MikeMc71
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Tucson, AZ - USA

Vette(s):
1970 White L-46 Air Roadster, 1971 White LT1 Coupe, 1971 Red Auto Air Coupe, 383 stroker, 430 HP, 2002 Millennium Yellow Auto Coupe

Joined: 10/7/2007
Posts: 341
Luckily for me there is a local shop here in Tucson that will rebuild and bench test Q-Jets. They are a top notch shop. I bought a carb-in-a-box for my 70 L-46 (and sold the '75 carb here on C3VR) and they rebuilt it for me, and even brought it right up to factory specs, changed all the jets, tubes, and pins for $200. It really runs sweet now. Well worth the $$.

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9/28/10 6:11pm - Reply: 'Remanufactured Q-Jet'
kstyer Lifetime Member
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CUYAHOGA FALLS, OH - USA

Vette(s):
1975 C3 Red, T-Tops, Black Interior. All I need is time and money! Getting there!

Joined: 12/2/2003
Posts: 6410
I don't think I have ever taken a carb out of the box and not had to go through it to make it work properly.  I always prefer to rebuild the exsisting carb when it is possible, and most of the time it can be done.  
 
Dispite the rep, the q-jet is really a good carb.  I have rebuilt many, many over the years.  When someone knows what they are doing when setting it up, they perform top notch.  COnsidering where you are, the Portland shop sounds like a winner.
 
Now if you were in Ohio, and I was healed.....     If you like check out www.vetteprojects.com and look at Ken's Quadrajet.   You will find a step by step rebuild complete with photos and directions to rebuild the Q!-jet.   Yes, it's the one off of my 75.  It was a mess when I first got it.


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On the "Tail of the Dragon"
(some day, no strike that, October 2008 it turned red, still in progress!)

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9/28/10 7:30pm - Reply: 'Remanufactured Q-Jet'
JPD1stVette Gold Member
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Scotch Plains, NJ - USA

Vette(s):
1981 Corvette Coupe, Stock, Black on Black, 4 Spd

Joined: 1/11/2006
Posts: 209
Hey Dave076
Another source for a rebuild is www.customrebuiltcarbs.com Tel # (732) 356-4333
This shop is a few miles from my home in NJ but it's cross country for you.
This shop is always at Corvettes @ Carlilse and just met up with them @ Englishtown Raceway Park.
 
FYI  -  I have never used their service, but I plan to.
 
JPD1stVette2010-09-28 16:36:12

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9/28/10 9:40pm - Reply: 'Remanufactured Q-Jet'
lbbounder
Former Member
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Owensboro, KY - USA

Vette(s):
1977 Coupe; yellow, 4 speed, one option car with original engine

Joined: 9/9/2007
Posts: 138

I have got to remember to search for this post when the time comes... I still have the quadrajet and it stumbles when I mash the accelerator; been debating on a rebuild or just to get a Holley.



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1996 Grand Sport
1977 Coupe
 
gone but not forgotten
1984 coupe
1974 coupe
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9/29/10 12:13am - Reply: 'Remanufactured Q-Jet'
daveo76
Standard Member
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Vancouver, WA - USA

Vette(s):
1976 Silver/Firethorn. L48, 4spd. Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.

Joined: 8/25/2005
Posts: 830
I actually have been through it myself already.  Someone posted about the quality of the rebuild kits these days.  I can vouch for that statement: one of the body gaskets had some slight variations from the one I took out and the needle and seat looked a little different, too.  I was surprised at how few parts were included in the kit as well.  I put it all back together and it runs OK, but something is still just not right about it.  Hard to put my finger on the exact problem and I've decided it's time to get some professional help.  It would be nice if I could find a local shop that would do a minor bench rebuild or even just check things out to make sure I did it right, and then maybe spend an hour or so tuning it on the running car.  I'll start talking to some of the local shops and see what they say.... 

Oh, and I did use the "Ken's Q-Jet" article when I was doing the rebuild as well as the Rochester Carb book I purchased a few years ago.  Both were great resources!
daveo762010-09-28 21:17:01

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1976 Silver/Firethorn.  L48, 4spd.  Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.
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 Forums -> C3 Fuel, Emission Control, and Exhaust Systems
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