Return Type Ecotec Fuel Rail on eBay

[WopOnTour]

For anybody interested in converting their LSJ back to an older style "return type" fuel system with external (boost compensating) fuel pressure regulator I seen one on eBay today currently at 29.99 (includes 4 useless 2.2 injectors- but you might be able to sell them to a 2.2 buddy)
This particular rail (2003-05 J-body) has big time internal volume with standard quick-couple fitting on the pressure line and a threaded fitting on the regulator.It would take a bit of screwing around as you would need to run a return line back to the tank- but it's do-able
(Refer to the GM build book for more info)

http://cgi.ebay.com/ebaymotors/Ecote...QQcmdZViewItem

WOT

[rice eater]

thank you wop. I may try this.

[Adam_Ant]

Thats a great find Wop. That solves one of my swap issues. Only problem left is getting the motor and tranny to fit. That shouldnt be to hard .

[WopOnTour]

Well I was thinking we should be able to connect the return line to the tank return at the filter, then change the filter to a 2 spout design. then All you would need is to run a nylon return line back to the filter, and connect a vacuum/boost line to the regulator.

The returnless system is really a PITA
Last summer we spent a LOT of time and money adding the Kenne Bell fuel pump amplifers to a couple of "sprayed" street/strip cars. So this year we are just going to convert them back to a "regulated" design. I already have a couple of fuel rails, but I seen that one and thought I would share. the BEST rail would be out of 2002 J-body with the ECOTEC because it has a threaded inlet that would directly connect to the LSJ fitting, then the return comes off the top of the rail about 1/2 way down. Here's a pic- if you see one of these for cheap SNAP IT UP!

[ptparker]

Originally Posted by WopOnTour

Well I was thinking we should be able to connect the return line to the tank return at the filter, then change the filter to a 2 spout design. then All you would need is to run a nylon return line back to the filter, and connect a vacuum/boost line to the regulator.

The returnless system is really a PITA
Last summer we spent a LOT of time and money adding the Kenne Bell fuel pump amplifers to a couple of "sprayed" street/strip cars. So this year we are just going to convert them back to a "regulated" design. I already have a couple of fuel rails, but I seen that one and thought I would share. the BEST rail would be out of 2002 J-body with the ECOTEC because it has a threaded inlet that would directly connect to the LSJ fitting, then the return comes off the top of the rail about 1/2 way down. Here's a pic- if you see one of these for cheap SNAP IT UP!

How much hacking up would need to be done to that to make it fit? Are our injectors the same spaceing as an LS1?

[WopOnTour]

Originally Posted by ptparker

How much hacking up would need to be done to that to make it fit? Are our injectors the same spaceing as an LS1?

LS1?? No L61! (The NA 2.2 Ecotec- exact same spacing) Like I said you would need to run a 5/16 or 3/8" return line back to the tank somehow, AND of course remove the regulator in the fuel tank unit. The advantage of this it would allow a an increase in fuel pressure based on boost and facilitate the use of an FMU. The LSJ loses a lot of low end drivability with huge injectors (hense the reason so many tuners are looking at additional injectors and "port fuelers" to provide the much needed enrichment at the top end.

Traditionally this was done through pump pressure and an FMU but the returnless system makes that impossible. So we are going to convert a couple of cars back to the traditional regulation.(as per the GM build book) we even thought of maybe running a vac/boost line all the way back to the tank and to the tank mounted regulator- but running a line like that is a bit risky as in the event of a backfire... well you can imagine.

Just screwin around is all. Most people couldnt be bothered with this sort of modification, cuz it's a ton of work and may still not get the desired results- but I thought I would share.

Wop

[crazybrew609]

let us know how it turns out... if you see a great deal of ease in tuning with the return system let us know could that is a simple 1 day job

[WopOnTour]

OK I screwed the pooch on this eBay rail a bit
It is designed for the LONG MultecII injector
It wont work with the stock LSJ injectors, or the stage kit injectors
(but it WOULD work with the MultecII 42 lb injectors from GMPP and other sources)

It's easy to make a rail work with LONGER injectors using spacers, but it's hard to go to a shorter injector.

The rail you want if you plan to do this conversion is shown in the pic above
2002 Cavalier or Sunfire for sure maybe other applications in that year and prior.
OR aftermarket fuel rails like the Golden Eagle (others?)

WOT

[rice eater]

WOP, you are the man. I will get on it. with our new product ideas this will be most handy.