GM called for a 2-micron filters in the carb. Yes. GM did have a bronze filter. But I have serious droughts that it's also 2 micron. The Q jet must have that 2-micron filter. Most in line filters are 20 micron. Some owners take the Q jet filter out. And think an in line filter will do the job. NO. It will not. But it will give you carb problems.
As to the twist. Most of those paper carb filters. Used a water base adhesive. Every time that I've found the filter coming apart like you're talking about. I found water in the tank. Something to think about.
Bob Dunahugh
78 Royale since 2003.
4 real COPO Yenkos
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There is a spring that keeps the filter up against the fitting that you screw into the base. As you install the filter. The filter is fairly stout. The spring tention is very light. Thus, the filter cannot get twisted during installation. The spring will put a very light twist action on the filter. After installed.
I never saw water in the carb. But when I've found filters that came apart. I then drained the tanks at the drain plugs. And tilted them to get as much out as possible. Then filled the tanks with E-15. Put a new carb filter in. Problem went away. I've had this happen twice. Thus, I ASSUMED that it was water in the gas. BUT. We all know about ASSUME. For those that may not know. ASS out of U and ME both. Open for other thoughts.
Bob Dunahugh
78 Royale since 2003

________________________________
From: Bob Dunahugh
Sent: Monday, June 22, 2020 11:43 PM
To: gmclist@list.gmcnet.org
Subject: RE: Twisted fuel filter?

GM called for a 2-micron filters in the carb. Yes. GM did have a bronze filter. But I have serious droughts that it's also 2 micron. The Q jet must have that 2-micron filter. Most in line filters are 20 micron. Some owners take the Q jet filter out. And think an in line filter will do the job. NO. It will not. But it will give you carb problems.
As to the twist. Most of those paper carb filters. Used a water base adhesive. Every time that I've found the filter coming apart like you're talking about. I found water in the tank. Something to think about.
Bob Dunahugh
78 Royale since 2003.
4 real COPO Yenkos
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http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org