NB Fuel Return Question - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members

Engine Performance This section is for discussion on all engine building related questions.
Sponsored by:
Sponsored by:

LinkBack Thread Tools Search this Thread
Old 06-12-2015, 06:25 PM   #1
Junior Member
Thread Starter
Join Date: Jul 2013
Location: TX
Posts: 319
Total Cats: -12
Default NB Fuel Return Question

I have a MSM, and I was doing my Walbro 255 the other day and I see we actually have a return line. Unless I'm not understanding my fuel pressure regulator correctly.

Anyway, what stop us from just removing the intake FPR, and plumbing one right after the fuel rail with the existing line?
ihiryu is offline   Reply With Quote
Old 06-12-2015, 06:28 PM   #2
Senior Member
iTrader: (1)
Join Date: Apr 2011
Location: Columbia, SC
Posts: 1,342
Total Cats: 78

Schuyler is offline   Reply With Quote
Old 06-12-2015, 08:16 PM   #3
Supporting Vendor
iTrader: (33)
Ben's Avatar
Join Date: Jul 2006
Location: atlanta-ish
Posts: 12,689
Total Cats: 99

Everything is stopping you. You have neither a return line nor a FPR at the front of your car.

The line you are incorrectly calling a return line is for vapor purge. The device at the frame rail is a fuel damper.
Ben is offline   Reply With Quote
Old 06-12-2015, 10:43 PM   #4
Join Date: May 2014
Location: New Orleans, St. Louis
Posts: 14
Total Cats: 1

There is a return line on NB miatas, but it happens to be immediately after the fuel filter, and nowhere near the engine bay, where you seem to be looking. That's all fuel dampener stuff.
VertBert is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 59 Today 09:00 PM
Walbro 255lph Fuel Pump $50 lsc224 Miata parts for sale/trade 2 10-01-2015 10:17 AM
"Chimney Ethanol" E100 MiataGarage Engine Performance 5 09-30-2015 12:04 AM
why is my car running like pewp? (tune/datalog) itsMikey MSPNP 3 09-28-2015 07:40 AM

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -4. The time now is 09:18 PM.