Hello
Does anybody know what thread size is on a bolt for a holley float bowl, mines pulled a thread.
Thanks.[/list]
Holley fuel bowl bolt thread
Moderator: phpBB2 - Administrators
The float bowl screw thread (and also the baseplate screw threads) are #12-24. Helicoil thread repair kits are available though McMaster-Carr, MSC, and others here in the states; I suspect you will be to find a source for them on your side of the pond as well.
One quick note... The accelerator pump discharge nozzle (squirter) screws are #12-28 thread; similar but just different enough to make a real mess of things if the wrong repair tools are used.
A Holley rep told me "off the record" several years ago that Holley originally chose these obscure "bastard" thread sizes to make these parts difficult to repair so that you'd be more likely to just buy a replacement.
One quick note... The accelerator pump discharge nozzle (squirter) screws are #12-28 thread; similar but just different enough to make a real mess of things if the wrong repair tools are used.
A Holley rep told me "off the record" several years ago that Holley originally chose these obscure "bastard" thread sizes to make these parts difficult to repair so that you'd be more likely to just buy a replacement.
