Factory Q Jet Carb Rebuild? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**70cst** · 07-01-2003, 08:25 AM

I'm thinking about having by factory Q Jet rebuilt and then re-install on my 402BB. Since I'm mechanial deficient...who (company) does a good job of doing this type of work? Once a carb is fully rebuilt is it as good as the new one? Will the performance be the same as new? Is there a company who sales factory reburbished Q Jets? Is this a good idea or bad?
I humbly await your answers based on your years based on years of knowledge and experience.

krue · 07-01-2003, 08:28 AM

I am gonna try the rebuild route on my Q-jet. Edb has a friend who is gonna show me how it is done. That's assuming they haven't been washed away by tropical storm Bill!

pierce · 07-01-2003, 01:10 PM

Rebuilding a QJ is cheaper than replacing it and is a fairly simple job. If you make it to the Ohio board gathering I'll show you how, bring it and a rebuild kit and some carb cleaner.
Rob

cheyenne10 · 07-01-2003, 03:35 PM

We used these guys without hardly a problem. Carb ran great out of the box. I think it was around $145 shipped after $35 core return.

http://www.carbsonly.com/

Alex · 07-01-2003, 03:44 PM

You could pick up a book on Rochester Carburetors by Doug Roe. It shows step by step on properly rebuilding one and also tuning for better performance as well.

Andrew68c10 · 07-01-2003, 04:16 PM

Before I got the Doug Roe book, I could not even spell Qjet. I've now rebuilt three with good results.

woodyjeff · 07-01-2003, 08:19 PM

The Qjet is the best way to go in my opinion, anyways we have a shop in town that specilizes in carbs and the good thing about getting them to do it is they can drill out and bush the primary throttle plate rod so that it is tight again and there is no more slop in the primaries. It only cost me like $75.00 and that was for the full rebuild. So I would check and see if you have one of these shops in your area.

**70cst** · 07-02-2003, 09:01 AM

Thanks guys...Your help is greatly appreciated.
Best Regards,
70cst

pierce · 07-02-2003, 09:38 AM

There is a carb specialist here in Milford Oh that just did my neighbors Holley carb. He told him the pre 71 Q-jets used bad pot metal in the castings and the threads were prone to powder away and if that happens then they are junk and can't be rebuilt.

07-01-2003, 08:25 AM	#1
70cst Senior Member Join Date: Feb 2001 Location: New Madison, Ohio Posts: 21,373	Factory Q Jet Carb Rebuild? I'm thinking about having by factory Q Jet rebuilt and then re-install on my 402BB. Since I'm mechanial deficient...who (company) does a good job of doing this type of work? Once a carb is fully rebuilt is it as good as the new one? Will the performance be the same as new? Is there a company who sales factory reburbished Q Jets? Is this a good idea or bad? I humbly await your answers based on your years based on years of knowledge and experience.

07-01-2003, 08:28 AM	#2
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,448	I am gonna try the rebuild route on my Q-jet. Edb has a friend who is gonna show me how it is done. That's assuming they haven't been washed away by tropical storm Bill! __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"

07-01-2003, 01:10 PM	#3
pierce Registered User Join Date: Sep 2000 Location: Cincinnati,OH,USA Posts: 464	Rebuilding a QJ is cheaper than replacing it and is a fairly simple job. If you make it to the Ohio board gathering I'll show you how, bring it and a rebuild kit and some carb cleaner. Rob __________________ 69 GMC 1 Ton Longhorn 37 Chevy Coupe

07-01-2003, 03:35 PM	#4
cheyenne10 Senior Member Join Date: Apr 2000 Location: Oregon Posts: 2,512	rebuilt quadrajet We used these guys without hardly a problem. Carb ran great out of the box. I think it was around $145 shipped after $35 core return. http://www.carbsonly.com/ __________________ Bob

07-01-2003, 03:44 PM	#5
Alex Registered User Join Date: Jan 2000 Location: Blaine, MN Posts: 798	You could pick up a book on Rochester Carburetors by Doug Roe. It shows step by step on properly rebuilding one and also tuning for better performance as well. __________________ '72 C/10 LWB 402/400 Blaine, MN Last edited by Alex; 07-01-2003 at 03:48 PM.

07-01-2003, 04:16 PM	#6
Andrew68c10 Registered User Join Date: Sep 2000 Location: Paso Robles, CA Posts: 178	Before I got the Doug Roe book, I could not even spell Qjet. I've now rebuilt three with good results.

07-01-2003, 08:19 PM	#7
woodyjeff Registered User Join Date: Mar 2003 Location: Lincoln, NE Posts: 32	The Qjet is the best way to go in my opinion, anyways we have a shop in town that specilizes in carbs and the good thing about getting them to do it is they can drill out and bush the primary throttle plate rod so that it is tight again and there is no more slop in the primaries. It only cost me like $75.00 and that was for the full rebuild. So I would check and see if you have one of these shops in your area. __________________ 70 Custom-10 LWB

07-02-2003, 09:01 AM	#8
70cst Senior Member Join Date: Feb 2001 Location: New Madison, Ohio Posts: 21,373	Thanks guys...Your help is greatly appreciated. Best Regards, 70cst

07-02-2003, 09:38 AM	#9
pierce Registered User Join Date: Sep 2000 Location: Cincinnati,OH,USA Posts: 464	There is a carb specialist here in Milford Oh that just did my neighbors Holley carb. He told him the pre 71 Q-jets used bad pot metal in the castings and the threads were prone to powder away and if that happens then they are junk and can't be rebuilt. __________________ 69 GMC 1 Ton Longhorn 37 Chevy Coupe

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