2 more Quadrajet questions
Thread Starter
Melting Slicks
Joined: Mar 2006
Posts: 3,342
Likes: 7
From: Connecticut
2 more Quadrajet questions
Hey all!
Has anybody ever seen studs rather than bolts for the front (the long bolts) for a QJ?
The reason I ask is if I am going to be removing the air horn for tweaking I am leary of damaging the threads on my aluminum intake by constantly removing and installing the bolts. If so where can I purchase them?
Also, does anybody have a set of long bolts lying around that they can measure the length for me in case I need to hunt for the studs?
Second question is where can I purchase power pistons,rod hangers,and springs for a QJ
Thanks
Bob
Has anybody ever seen studs rather than bolts for the front (the long bolts) for a QJ?
The reason I ask is if I am going to be removing the air horn for tweaking I am leary of damaging the threads on my aluminum intake by constantly removing and installing the bolts. If so where can I purchase them?
Also, does anybody have a set of long bolts lying around that they can measure the length for me in case I need to hunt for the studs?
Second question is where can I purchase power pistons,rod hangers,and springs for a QJ
Thanks
Bob
Instructor
Joined: Nov 1999
Posts: 155
Likes: 0
From: Eureka NV
WOW... been working on these things since LONG before the Q-Jet arrived on GM cars and have never seen such a thing (studs for a Q-Jet). I have taken them on and off MANY times with no problem. With no disrespect intended I think your concern is misplaced. Just use care making sure you don't cross thread them..
Ken
Ken
Melting Slicks
Joined: Mar 2005
Posts: 2,838
Likes: 10
From: Austin TX
Agree,..no need for studs.
Also,..here's the place I use to purchase Q-Jet parts,..good people.
http://www.carburetion.com/
Also,..here's the place I use to purchase Q-Jet parts,..good people.
http://www.carburetion.com/
Team Owner
Joined: Jul 1999
Posts: 26,545
Likes: 46
From: Huntersville NC
I thought it was fairly common to substitute studs for bolts on the Qjet, or any carb for that matter. It does reduce the chances of overtightening and stripping the threads. I did read on this forum about a carb stud falling into the engine and destroying the block. 
vendor that sells carb parts... there are a couple. I don't have the link handy but they tend to have "carb" in the name.
Used to be able to get some parts by part# from GM dealer, but that is getting harder and harder to do as they discontinue carrying the pieces.
vendor that sells carb parts... there are a couple. I don't have the link handy but they tend to have "carb" in the name.
Used to be able to get some parts by part# from GM dealer, but that is getting harder and harder to do as they discontinue carrying the pieces.
Melting Slicks
Joined: Mar 2005
Posts: 2,838
Likes: 10
From: Austin TX
Or,..you could go to your hardware store and purchase 5/16 course thread studs in grade 5. Cut to length, call it good. But most carb studs have course thread for the intake end, and fine thread for the nut (tightening) end.
But what was good enough for GM is good enough for me,..bolts. You're not gonna tighten it down enough to harm any threads in the intake. I don't know what the torque recommendation is, but it's not much.
Also, there are engine lift plates that mount to the carb pad that lift the engine,..and aluminum intakes survive and thrive.
Good luck.
But what was good enough for GM is good enough for me,..bolts. You're not gonna tighten it down enough to harm any threads in the intake. I don't know what the torque recommendation is, but it's not much.
Also, there are engine lift plates that mount to the carb pad that lift the engine,..and aluminum intakes survive and thrive.
Good luck.
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Thread Starter
Melting Slicks
Joined: Mar 2006
Posts: 3,342
Likes: 7
From: Connecticut
Originally Posted by 73, Dark Blue 454
Or,..you could go to your hardware store and purchase 5/16 course thread studs in grade 5. Cut to length, call it good. But most carb studs have course thread for the intake end, and fine thread for the nut (tightening) end.
But what was good enough for GM is good enough for me,..bolts. You're not gonna tighten it down enough to harm any threads in the intake. I don't know what the torque recommendation is, but it's not much.
Also, there are engine lift plates that mount to the carb pad that lift the engine,..and aluminum intakes survive and thrive.
Good luck.
But what was good enough for GM is good enough for me,..bolts. You're not gonna tighten it down enough to harm any threads in the intake. I don't know what the torque recommendation is, but it's not much.
Also, there are engine lift plates that mount to the carb pad that lift the engine,..and aluminum intakes survive and thrive.
Good luck.
As far as "bieng good enough for GM" and "the lifting plates on the manifold" this is not a stock cast Iron manifold...Its aluminum.
The torque specs are 60-80 INCH lbs which isnt much at all.
Having studs installed assures that I wont be touching the threads on the intake at all while working on the carb.
I have had problems with aluminum threads on quite a few different parts over the years which I beleive is fairly common ...if it wasnt then HeliCoil would be out of business.
Thanks for the links to the sites guys!
Bob
