Author Topic: Throttle plate screw staking question(s) for Cliff...  (Read 5357 times)

Offline jjr

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Throttle plate screw staking question(s) for Cliff...
« on: January 12, 2012, 09:08:10 PM »

 Cliff,

 Can you expand a bit on the process of staking the throttle
plate screws.

 In the instruction sheet for the rebush kit, you mention using
both the red locktite and recommending the screws be staked.

 I have done plenty of stakes in the carb main body, which is
slightly softer than either these screws of the throttle shaft.

 So, do you "stake" the shaft metal to the screw, or is it that
we are staking (deforming) the end of the screw?

 I take it you are using a punch, flat or chisel like?

 Your instructions mention doing like the factory did. Do you
mean simply that they staked them, or did they have a special
procedure or tool?

 Obviously we don't want the screws to ever some loose, to that
point wouldn't just the locktite hold them? The red is supposed
stay put from what I've read.

 Would soldering the screws hold them as well?

 Thanks in advance Sir...

 Joe
1980 Black Special Edition Trans Am (301NA)
1980 Indy Pace Car Turbo Trans Am
1980 Indy Pace Car Turbo Trans Am
1981 Turbo Trans Am, Gold
1981 Turbo Trans Am, Dk Gray
1981 Black Special Edition Turbo Trans Am
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Offline motorvation2go

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Re: Throttle plate screw staking question(s) for Cliff...
« Reply #1 on: January 14, 2012, 08:40:56 PM »
  Hi Joe,
       I trust that [both] Cliff and yourself will grant forgiveness for me having jumped in here.
Yes... you actually stake the screw 'threaded' or 'leading' end.
I generally use a small chisel and ball peen hammer for this purpose.
Just enough 'umph' to deform the end is all that is req'd.
A single stake or 'cross peening' is sufficient.
You may wish to shorten the screw slightly with a dremel or die grinder (use a stone for fine control) after installation and tightening if there appears to be excessive free length protruding past the throttle shaft.
Probably wont be necessary with stock thickness shafts though.
I place a (flat faced~ 1/4" dia) round pin punch (snug, standing vertically) in a bench vise.
This becomes the 'anvil'.
Nice to having a 2nd set of hands holding the carb base plate so as to ensure that the screw to be staked is sitting perfectly square and centered over the head of the pin punch.
No bent or otherwise bruised throttle shafts are wanted!
Cliff may provide further insight into this matter, but this has always worked nicely for me.
Hope this is of some help.
Cheers.


Offline Cliff Ruggles

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Re: Throttle plate screw staking question(s) for Cliff...
« Reply #2 on: January 15, 2012, 04:36:15 AM »
I use the same method, clamp a wide flat punch in the vise to support the head of the screw, then gently tap the exposed threads with the round end of a small machinists hammer.  Takes just a few seconds to stake all 8 screws.....Cliff

Offline jjr

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Re: Throttle plate screw staking question(s) for Cliff...
« Reply #3 on: January 15, 2012, 10:06:57 PM »

 Thank you gentlemen!

 Joe
1980 Black Special Edition Trans Am (301NA)
1980 Indy Pace Car Turbo Trans Am
1980 Indy Pace Car Turbo Trans Am
1981 Turbo Trans Am, Gold
1981 Turbo Trans Am, Dk Gray
1981 Black Special Edition Turbo Trans Am
1981 Daytona Pace Car Turbo Trans Am
http://www.301garage.com/forum/