Thread size on Holley (Howell) TBI idle screw [message #180381] |
Wed, 15 August 2012 14:17  |
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RF_Burns
 Messages: 2277 Registered: June 2008 Location: S. Ontario, Canada
Karma: 3
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I guessing I did the idle setup so many times before I got the EBL that my idle adjust screw is loose. I keep needing to re-adjust it because it backs off and the IAC needs to open further and further... I'm up to the high 20's count again now so I need to reset it again.
I'd like to put a jam screw against it but I can't find one that fits.
Looks like a fine thread 3/8" but I'm thinking its maybe a metric?
Thanks
Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC. 1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
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Re: Thread size on Holley (Howell) TBI idle screw [message #180399 is a reply to message #180381] |
Wed, 15 August 2012 16:20   |
George Beckman
 Messages: 1085 Registered: October 2008 Location: Colfax, CA
Karma: 11
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rf_burns wrote on Wed, 15 August 2012 12:17 | I guessing I did the idle setup so many times before I got the EBL that my idle adjust screw is loose. I keep needing to re-adjust it because it backs off and the IAC needs to open further and further... I'm up to the high 20's count again now so I need to reset it again.
I'd like to put a jam screw against it but I can't find one that fits.
Looks like a fine thread 3/8" but I'm thinking its maybe a metric?
Thanks
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Could you find a spring, like the idle air adjustment on carbs that would help hold it.
'74 Eleganza, SE, Howell + EBL
Best Wishes,
George
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Re: Thread size on Holley (Howell) TBI idle screw [message #180459 is a reply to message #180381] |
Thu, 16 August 2012 05:38  |
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RF_Burns
 Messages: 2277 Registered: June 2008 Location: S. Ontario, Canada
Karma: 3
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Senior Member |
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Matt, thanks for that idea, I shall give it a try.
Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC. 1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
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