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Carb Stud Install?
#2660993
05/31/19 04:25 PM
05/31/19 04:25 PM
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Joined: Jun 2018
Posts: 350 Mequon, WI
gzig5
OP
enthusiast
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OP
enthusiast
Joined: Jun 2018
Posts: 350
Mequon, WI
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What is the torque/process to install carb studs in an aluminum intake? These don't bottom out. They are 5/16-18 on one end and 5/16-24 on the other with a dead band in between. I was going to just snug them down with some blue loctite. Seems really cranking them in will swage the start of the thread on the band, but maybe that is what we want? Edelbrock's tech line was busy and the one video I found online looks like he really reefs on it. Don't want to screw up the intake. In the past when I installed studs it was basically finger tight.
Last edited by gzig5; 05/31/19 04:36 PM.
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Re: Carb Stud Install?
[Re: gzig5]
#2661008
05/31/19 05:55 PM
05/31/19 05:55 PM
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Joined: Dec 2005
Posts: 11,668 Fulton County, PA
CMcAllister
Mr. Helpful
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Mr. Helpful
Joined: Dec 2005
Posts: 11,668
Fulton County, PA
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Snug. Like just a bit tighter than finger tight. Not a high stress application. No need for Loctite. Nuts should only be snugged with a wrench or small ratchet as well. Overtightening there will distort/warp the carb base.
Last edited by CMcAllister; 05/31/19 05:56 PM.
If the results don't match the theory, change the theory.
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Re: Carb Stud Install?
[Re: gzig5]
#2661009
05/31/19 05:56 PM
05/31/19 05:56 PM
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Joined: Oct 2006
Posts: 1,264 New York, USA
Chargerfan68
pro stock
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pro stock
Joined: Oct 2006
Posts: 1,264
New York, USA
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In my opinion, you don’t want tighten a fastener down by bottoming it out or creating a swedging action like the non threaded middle part of the stud binding into the threads, as you suspect. I always use loctite blue and finger tight. Then put carb on and torque down to spec and let it take a set. Others may have diff method, but that always worked for me and i could get studs out by using hand tools. Studs never loosened up on their own this way for me.
1.50 60Ft. , 10.75@ 127MPH Hauling 3900 LBS.
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Re: Carb Stud Install?
[Re: Chargerfan68]
#2661019
05/31/19 06:49 PM
05/31/19 06:49 PM
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Joined: Jan 2003
Posts: 13,610 md
mopars4ever
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,610
md
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Snug. Like just a bit tighter than finger tight. Not a high stress application. No need for Loctite. Nuts should only be snugged with a wrench or small ratchet as well. Overtightening there will distort/warp the carb base. That is how i have always done it.
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Re: Carb Stud Install?
[Re: CMcAllister]
#2661021
05/31/19 07:03 PM
05/31/19 07:03 PM
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Joined: Jun 2018
Posts: 350 Mequon, WI
gzig5
OP
enthusiast
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OP
enthusiast
Joined: Jun 2018
Posts: 350
Mequon, WI
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Snug. Like just a bit tighter than finger tight. Not a high stress application. No need for Loctite. Nuts should only be snugged with a wrench or small ratchet as well. Over-tightening there will distort/warp the carb base. Tech support called back and that is pretty much what he said and confirmed what I was thinking. Fingy-tight, no loctite, tighten in a X pattern. Seems to work fine. The one video I was able to pull up had the guy reefing them in with double nuts. I have worked with aluminum parts long enough to know that is a recipe for needing to heli-coil it in the future.
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Re: Carb Stud Install?
[Re: gzig5]
#2661081
05/31/19 10:51 PM
05/31/19 10:51 PM
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Joined: Dec 2005
Posts: 11,668 Fulton County, PA
CMcAllister
Mr. Helpful
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Mr. Helpful
Joined: Dec 2005
Posts: 11,668
Fulton County, PA
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Holley says 60-80 lb.in. torque on the hold down fasteners. That's 5-6.5 lb.ft. Just over snug.
If the results don't match the theory, change the theory.
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Re: Carb Stud Install?
[Re: gzig5]
#2661212
06/01/19 01:00 PM
06/01/19 01:00 PM
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Joined: Aug 2003
Posts: 43,285 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,285
Bend,OR USA
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I've seen finger tight studs come loose after running, not good I do use double nuts to install them so there snug, NOT REAL TIGHT I also make sure and use a flat washer under the nuts and retighten after running the motor long enough with the hood shut to get the intake and carb hot up to running temps to squish the gaskets and get the studs and carb hot
Last edited by Cab_Burge; 06/01/19 01:00 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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