Guest allamerican6 Posted October 2, 2013 Share Posted October 2, 2013 WHY DOES THE FUEL FILTER ON A 63 RIVIERA WITH AIR HAVE AN INLET AND TWO OUTLETS, WHILE THE FUEL FILTER FOR A RIVIERA WITHOUT AIR DOES NOT? Link to comment Share on other sites More sharing options...
RivNut Posted October 2, 2013 Share Posted October 2, 2013 My understanding is that with the higher heat that is caused by an engine with a/c, the return line prevents vapor lock in the fuel line. But this is just what I've heard. Someone else might have a better answer. Link to comment Share on other sites More sharing options...
Jim Cannon Posted October 2, 2013 Share Posted October 2, 2013 (edited) Ed is correct. The second, smaller, outlet gives a place for fuel vapor to go back toward the tank if your fuel boils, instead of going into your carb. You want liquid fuel in your carb. There is actually has a little restriction down inside the nipple, if you look. It does not let much liquid fuel through (but some). Any vapor that goes down that return line condenses back to liquid before getting to the tank. My experience with this return line is that it is sometimes a source of problems. If your engine seems like it is not getting enough fuel, temporarily block off the return line and see if it gets better. If it does, you can run without the return line. However, with all the ethanol in today's gas, fuel boiling is a bigger problem today than it was in '63. If you run in very hot weather with the A/C on, so you get high temperatures under the hood, you are going to want that return line. Part numbers for fuel filter for cars with A/C: Wix 33040 Hastings GF19 NAPA 3040 You can cross-reference from these to others if you need to. I like Wix. Hope that helps. Jim PS - I would appreciate a close up photo of your "data plate" above the power brake booster, to add to my '63 Riv database. E-mail to e-mail address in my profile. Thanks. Edited September 19, 2017 by Jim Cannon (see edit history) Link to comment Share on other sites More sharing options...
Zimm63 Posted September 17, 2017 Share Posted September 17, 2017 (edited) To revive an old discussion WIX 33032 is not correct for AC cars. Had one in my hand today, and there is no vapor line. The GF9 is no longer produced either, according to them. What are people using for fuel filters? Edited September 17, 2017 by Zimm63 (see edit history) Link to comment Share on other sites More sharing options...
RivNut Posted September 17, 2017 Share Posted September 17, 2017 http://www.oldbuickparts.com/product_info.php?cPath=27_339_340&products_id=6541 1 Link to comment Share on other sites More sharing options...
johnrex Posted September 17, 2017 Share Posted September 17, 2017 Here is picture of the inside of an A/C filter showing the tiny return line hole Link to comment Share on other sites More sharing options...
KongaMan Posted September 18, 2017 Share Posted September 18, 2017 RockAuto has several fuel filters listed, for both AC and non-AC cars. Strangely enough, they have more filters listed for 64 than 63. Link to comment Share on other sites More sharing options...
RivNut Posted September 18, 2017 Share Posted September 18, 2017 I went to the Wix site and found a number for their filter(s) - a/c and non a/c. Link to comment Share on other sites More sharing options...
Zimm63 Posted September 18, 2017 Share Posted September 18, 2017 WIX lists the 33032 which is the steel can with no vapor line (non AC). And the the 33002 which is a plastic version of the 33032. According to my parts guys, the vapor line version is NLS. Glad to know CARS has it. Link to comment Share on other sites More sharing options...
RivNut Posted September 18, 2017 Share Posted September 18, 2017 From the Wix website http://www.wixfilters.com/Lookup/PartDetails.aspx?Part=58625 Link to comment Share on other sites More sharing options...
RivNut Posted September 18, 2017 Share Posted September 18, 2017 Once I found the part number on the Wix site, I put the part number in Google and searched. This is a partial listing from the first page on Google. Summit Racing eBay Autoparts&stuff Amazon O"Reilly's NAPA Rock Auto. Here's the complete link. https://www.google.com/search?q=Wix+33040&rlz=1C1GGRV_enUS751US752&oq=wix+&aqs=chrome.0.69i59l2j69i57j0l3.3127j0j8&sourceid=chrome&ie=UTF-8 Don't know from where you guys are getting your info but you need to dig deeper. Ed Link to comment Share on other sites More sharing options...
Zimm63 Posted September 18, 2017 Share Posted September 18, 2017 Aa HA!! Thanks Ed. My parts guys have been very good in the past on this kind of stuff, but not so much this time. Link to comment Share on other sites More sharing options...
RivNut Posted September 18, 2017 Share Posted September 18, 2017 31 minutes ago, Zimm63 said: Aa HA!! Thanks Ed. My parts guys have been very good in the past on this kind of stuff, but not so much this time. Trust yourself, not the kid at the counter. Probably not his fault either, it's the guy who programmed the computer. And every knows that most parts guys without their computers are nothing. Link to comment Share on other sites More sharing options...
jframe Posted September 18, 2017 Share Posted September 18, 2017 18 minutes ago, RivNut said: Trust yourself, not the kid at the counter. Probably not his fault either, it's the guy who programmed the computer. And every knows that most parts guys without their computers are nothing. Things have changed in 30 years. I remember working in a jobber store with four big catalog racks, and writing what you wanted to order down on a pad on the counter. When I got into a dealership almost 25 years ago (crap, can't believe it's been that long), we were using microfiche to look up parts. WONDERFUL on your eyes, lol. Link to comment Share on other sites More sharing options...
rodneybeauchamp Posted September 19, 2017 Share Posted September 19, 2017 And when we went to microfiche we were also issued teeny weeny little pens to write in to the blank columns all those good to know details that you document as you go. Lots of my hard copy parts books had all the useful information written in which made it easier to interpret the correct part. I remember in the early introduction of microfiche, one model Chysler Lancer (later the Mitsubishi Lancer) listed two different chromed headlamp. They used the engine number as the change point. Up to engine number 123456 use part number abc and from engine number 123457 use part number xyz. When you compared the two surrounds, one was metal and the other was plastic. Try writing that on your microfiche. My reader had lots of white out on the screen too! Rodney Just my two bobs worth ?? 1 Link to comment Share on other sites More sharing options...
jframe Posted September 20, 2017 Share Posted September 20, 2017 On 9/19/2017 at 7:14 AM, rodneybeauchamp said: And when we went to microfiche we were also issued teeny weeny little pens to write in to the blank columns all those good to know details that you document as you go. Lots of my hard copy parts books had all the useful information written in which made it easier to interpret the correct part. I remember in the early introduction of microfiche, one model Chysler Lancer (later the Mitsubishi Lancer) listed two different chromed headlamp. They used the engine number as the change point. Up to engine number 123456 use part number abc and from engine number 123457 use part number xyz. When you compared the two surrounds, one was metal and the other was plastic. Try writing that on your microfiche. My reader had lots of white out on the screen too! Rodney Just my two bobs worth ?? Parts business has just gotten tougher. So much crap on today's cars. Nothing is available separate anymore; it's all assemblies. Link to comment Share on other sites More sharing options...
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