Fuel line question.
07-23-2003, 04:30 PM
#1
Team Owner
Thread Starter
Member Since: May 2001
Location: Exiled to Richmond, VA - Finally sold my house in Murfreesboro, TN ?? Corner of "Bumf*&k and 'You've got a purdy mouth'."
Posts: 29,745
Likes: 0
Received 2 Likes
on
2 Posts
CI 6-7-8 Veteran
CI-VIII Burnout Champ
St. Jude Donor '06-'10, '13
Fuel line question.
Is the stock fuel feed line on a C3 5/16's or 3/8" ? I don't have a pair of calipers or micrometer to measure it.
07-23-2003, 04:45 PM
#2
Safety Car
Re: Fuel line question. (BSeery)
I'm not sure what you mean by the feed line. However your main fuel line should be 3/8" and the return line should be 5/16" . Does that help?
07-23-2003, 06:02 PM
#4
Team Owner
Thread Starter
Member Since: May 2001
Location: Exiled to Richmond, VA - Finally sold my house in Murfreesboro, TN ?? Corner of "Bumf*&k and 'You've got a purdy mouth'."
Posts: 29,745
Likes: 0
Received 2 Likes
on
2 Posts
CI 6-7-8 Veteran
CI-VIII Burnout Champ
St. Jude Donor '06-'10, '13
Re: Fuel line question. (bence13_33)
I'm not sure what you mean by the feed line. However your main fuel line should be 3/8" and the return line should be 5/16" . Does that help?
So, that is 2 "it should be 3/8th's". My thought exactly. But has anyone measured it ? Are we sure? I am about to order about $150 worth of fuel line and fittings and I wanna make sure.
Looks like I may need to run out and get a caliper to measure.
07-23-2003, 06:11 PM
#5
Race Director
Member Since: Mar 2001
Location: Living in the Hartland
Posts: 11,322
Likes: 0
Received 1 Like
on
1 Post
Re: Fuel line question. (BSeery)
3/8" was stock for the feed but I don't think that return is 5/16", more like a 1/4" and you need 5/16" for most FI. The vapor return line on the driver side is either 5/16 or 3/8 and is what I'll be using for my return line.
07-23-2003, 06:46 PM
#6
Team Owner
Thread Starter
Member Since: May 2001
Location: Exiled to Richmond, VA - Finally sold my house in Murfreesboro, TN ?? Corner of "Bumf*&k and 'You've got a purdy mouth'."
Posts: 29,745
Likes: 0
Received 2 Likes
on
2 Posts
CI 6-7-8 Veteran
CI-VIII Burnout Champ
St. Jude Donor '06-'10, '13
Re: Fuel line question. (Fevre)
3/8" was stock for the feed but I don't think that return is 5/16", more like a 1/4" and you need 5/16" for most FI. The vapor return line on the driver side is either 5/16 or 3/8 and is what I'll be using for my return line.
You can't use the vapor return line on the drivers side. Some have said that it dumps between the metal tank and the bladder. What has happened in the past is that the return fuel gets dumped between the bladder and tank, causing the bladder to collapse. You will show that you have a full tank, but only have a few gallons if any at all inside the bladder.
I plan to run a new 3/8" return line and at the tank have it connect to the same place as the existing return line. I know that the connection at the tank is only 1/4", but that should still be able to flow enough for a return on my system. This is a TBI not a MPI system and the fuel pressures and flow are much less than a direct port system. If I still have to much return pressure, then I just need to take the filler neck and plate off and have a 3/8" return put in.
Well, it looks like it's a 3/8's feed line - time to spend some money at Summit !!!
07-23-2003, 07:30 PM
#7
Race Director
Member Since: Mar 2001
Location: Living in the Hartland
Posts: 11,322
Likes: 0
Received 1 Like
on
1 Post
Re: Fuel line question. (BSeery)
3/8" was stock for the feed but I don't think that return is 5/16", more like a 1/4" and you need 5/16" for most FI. The vapor return line on the driver side is either 5/16 or 3/8 and is what I'll be using for my return line.
My FI calls for 3/8th for both feed and return.
You can't use the vapor return line on the drivers side. Some have said that it dumps between the metal tank and the bladder. What has happened in the past is that the return fuel gets dumped between the bladder and tank, causing the bladder to collapse. You will show that you have a full tank, but only have a few gallons if any at all inside the bladder.
I plan to run a new 3/8" return line and at the tank have it connect to the same place as the existing return line. I know that the connection at the tank is only 1/4", but that should still be able to flow enough for a return on my system. This is a TBI not a MPI system and the fuel pressures and flow are much less than a direct port system. If I still have to much return pressure, then I just need to take the filler neck and plate off and have a 3/8" return put in.
Well, it looks like it's a 3/8's feed line - time to spend some money at Summit !!!
My FI calls for 3/8th for both feed and return.
You can't use the vapor return line on the drivers side. Some have said that it dumps between the metal tank and the bladder. What has happened in the past is that the return fuel gets dumped between the bladder and tank, causing the bladder to collapse. You will show that you have a full tank, but only have a few gallons if any at all inside the bladder.
I plan to run a new 3/8" return line and at the tank have it connect to the same place as the existing return line. I know that the connection at the tank is only 1/4", but that should still be able to flow enough for a return on my system. This is a TBI not a MPI system and the fuel pressures and flow are much less than a direct port system. If I still have to much return pressure, then I just need to take the filler neck and plate off and have a 3/8" return put in.
Well, it looks like it's a 3/8's feed line - time to spend some money at Summit !!!
07-23-2003, 08:51 PM
#9
Team Owner
Thread Starter
Member Since: May 2001
Location: Exiled to Richmond, VA - Finally sold my house in Murfreesboro, TN ?? Corner of "Bumf*&k and 'You've got a purdy mouth'."
Posts: 29,745
Likes: 0
Received 2 Likes
on
2 Posts
CI 6-7-8 Veteran
CI-VIII Burnout Champ
St. Jude Donor '06-'10, '13
Re: Fuel line question. (mdsmith)
Just measured mine...3/8" main & 1/4" return.