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How are making the switch from the fuel lines at the pump to -8 and also how are you routing the return? I have a Lonnies dual pump setup and am looking to switch to AN lines for my fuel system
How are making the switch from the fuel lines at the pump to -8 and also how are you routing the return? I have a Lonnies dual pump setup and am looking to switch to AN lines for my fuel system
How have you been a member since 2005 and not learned the search function? In other news, fittings are just as confusing and have just the same solutions across a variety of different types of uses. Plumbers, gas line guys, fuel line guys, whatever, all pull out of the same bag of tricks. Your local plumber or HVAC guy may be an invaluable resource when it comes to joining dissimilar fittings.
The simple answer to make the 'switch' from stock to AN fittings and a slew of fuel hose options is fairly simple.
You will start with an adapter shown in the pic below. It's for the feed side outlet on the 99-2002 fuel pump assembly (assuming Lonnie's conversion kit hasn't modified the outlet feed and inlet return ends). This fitting functions the same as the stock push lock fitting we see on most fuel line hose.
It pushes onto the fuel line end over the ridge on the fuel line end and then locks in place. There are two types to lock the fitting in place. We can discuss the type you want to use off line. Rather than take up space here - you can get details about both on Racetronix's site.
The opposite end of the fitting in the pic is different from the stock fuel line in that it increases in size from -6an to -8an allowing you to insert an -8 an fuel line into the opposite end of the fitting. Racetronix calls the ferrule compression fitting an 'olive'. Once properly installed the fitting will NOT leak and is almost impossible to pull the hose apart from the fitting if you use the industrial strength type instead of the nylon type fitting.
The -6an fitting (not pictured) connects the same way to the return inlet on the fuel hat. However it is -6an in and -6an out. You use -6an fuel hose for it.
FWIW you can purchase a complete fuel line kit from Racetronix that pretty much includes everything you need from the fuel hat all the way up to the rails in the engine bay. That said, we'll discuss some options to save some money in lieu of buying a complete kit. For example, you can use the stock feed line for the return and save yourself from buying about 10 ft of PTFE or other type fuel hose at about $8 a foot. That $80 will go a long ways towards buying an FPR (fuel pressure regulator) that you are going to need to handle the fuel pressure and volume from dual fuel pumps. We can also discuss some other issues in the kit that need to addressed as well. Been there done that. I'll also explain how to find all of the part numbers as well if you decide to build your own kit piecemeal.
Since there are a ton of questions and decisions you need to make about the rest of the fuel system PM me and will discuss off line.
Last edited by dlandsvZ28; Apr 20, 2022 at 09:52 AM.
Reason: edit content
The simple answer to make the 'switch' from stock to AN fittings and a slew of fuel hose options is fairly simple.
You will start with an adapter shown in the pic below. It's for the feed side outlet on the 99-2002 fuel pump assembly (assuming Lonnie's conversion kit hasn't modified the outlet feed and inlet return ends). This fitting functions the same as the stock push lock fitting we see on most fuel line hose.
It pushes onto the fuel line end over the ridge on the fuel line end and then locks in place. There are two types to lock the fitting in place. We can discuss the type you want to use off line. Rather than take up space here - you can get details about both on Racetronix's site.
The opposite end of the fitting in the pic is different from the stock fuel line in that it increases in size from -6an to -8an allowing you to insert an -8 an fuel line into the opposite end of the fitting. Racetronix calls the ferrule compression fitting an 'olive'. Once properly installed the fitting will NOT leak and is almost impossible to pull the hose apart from the fitting if you use the industrial strength type instead of the nylon type fitting.
The -6an fitting (not pictured) connects the same way to the return inlet on the fuel hat. However it is -6an in and -6an out. You use -6an fuel hose for it.
FWIW you can purchase a complete fuel line kit from Racetronix that pretty much includes everything you need from the fuel hat all the way up to the rails in the engine bay. That said, we'll discuss some options to save some money in lieu of buying a complete kit. For example, you can use the stock feed line for the return and save yourself from buying about 10 ft of PTFE or other type fuel hose at about $8 a foot. That $80 will go a long ways towards buying an FPR (fuel pressure regulator) that you are going to need to handle the fuel pressure and volume from dual fuel pumps. We can also discuss some other issues in the kit that need to addressed as well. Been there done that. I'll also explain how to find all of the part numbers as well if you decide to build your own kit piecemeal.
Since there are a ton of questions and decisions you need to make about the rest of the fuel system PM me and will discuss off line.
Why not keep it in the thread, so when other people ask questions down the line they can reference this thread and learn from it?
Some appear to be offended when information is repeated so rather than take up a lot of space to 'repeat' information I won't and will discuss some of the issues and options offline with the OP.
If you want I will CC you if I hear back from the OP.
He is probably scared to use the search function and replying to a thread that is more than 4 hours old and getting harrassed by G.
I know, but there are threads on here where people have cobbled up entire fuel systems from what looks like a rash of copper pipe theft, so I am sure a few threads deal with more "normal" adapter fittings. It just seems like the rash of people who want to be spoon fed every drop of info is increasing exponentially. I did not expect such from a person who has 10 years under their member name.
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Fuel pump to AN lines 
