Intake carb mount threads stripped - what to do? - Impala Tech
General Tech For best results use forums below.

 
LinkBack Thread Tools
post #1 of 7 (permalink) Old 03-28-2011, 01:47 AM Thread Starter
Member
 
Join Date: Feb 2011
Location: Texas
Posts: 69
 
Intake carb mount threads stripped - what to do?

Bought a rebuild kit for my carb and everything went smooth. I noticed the threaded studs in the intake that the carb mount with were kinda loose when i pulled the carb, and i wasn't able to tighten them down as much as id like when reinstalling the carb. If I cranked them down the studs would pull out.

Installed the carb and cranked the engine and raw gas is pouring out around the carb to intake gasket.

There are 2 possible mounting holes at each corner and it looks like most of them are stripped. The guy I bought the car from was a lousy mechanic, this is just one of a long list of this sort of thing I've been dealing with.

Any ideas? I'm thinking tap the holes one size larger and use larger threaded rod for studs, but I'm open to all ideas.

Aluminum Edelbrock intake with Edelbrock 4bbl carb on a 400 SBC.
Odin is offline  
Sponsored Links
Advertisement
 
post #2 of 7 (permalink) Old 03-28-2011, 08:35 AM
Senior Member
 
Join Date: Sep 2008
Location: Fort Worth Texas
Posts: 1,273
 
JB weld?
Txbobcat is offline  
post #3 of 7 (permalink) Old 03-28-2011, 10:09 AM
Senior Member
 
Join Date: Jul 2006
Location: Estero, FL
Posts: 471
 
I would put heli-coils in them and never look back, but my best friend would/has used the JB Weld successfully.

Mike

1965 Impala SS 396
1967 SS427
Michael9040 is offline  
 
post #4 of 7 (permalink) Old 03-28-2011, 10:47 AM Thread Starter
Member
 
Join Date: Feb 2011
Location: Texas
Posts: 69
 
I considered JB Weld, but I hate to use it if there's a better way. It always feels like a halfass fix when I use JB Weld.

Would you JB Weld the threaded studs into the manifold, or would you put JB Weld in the stripped manifold and then retap the threads into the JB Weld? I don't think the JB Weld would have the strength to hold new threads.

I also considered some silicone RTV form-a-gasket around the carb to keep me from having to crank it down too tight, but I don't like that idea either.
Odin is offline  
post #5 of 7 (permalink) Old 03-28-2011, 10:48 AM Thread Starter
Member
 
Join Date: Feb 2011
Location: Texas
Posts: 69
 
Quote:
Originally Posted by Michael9040 View Post
I would put heli-coils in them and never look back, but my best friend would/has used the JB Weld successfully.

So are you saying use a helicoil of a slightly larger diameter in the manifold, and then use the old threaded studs in the helicoils? This sounds like a good solution to me.
Odin is offline  
post #6 of 7 (permalink) Old 03-28-2011, 02:06 PM
Senior Member
 
Join Date: Jun 2008
Location: Near Chicago
Posts: 703
 
Yep that's how Helicoils work but you don't need to order larger than you have, the kit takes that into account. Only downside is you might have to remove the manifold to avoid chips falling into your engine.
1968 Caprice 396 is offline  
post #7 of 7 (permalink) Old 03-28-2011, 04:05 PM Thread Starter
Member
 
Join Date: Feb 2011
Location: Texas
Posts: 69
 
Picked up 5/16-18 Helicoil kit at lunch, I'll see how it goes tonight. Hopefully problem solved. If not, I'm gonna have a bunch of JB Weld in there.
Odin is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Impala Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome