2.0 LSJ Engine: Return-style fuel system for 2.0 LSJ
04-01-2008, 06:04 PM
#176
I honestly couldn't tell you what the factory pump can flow as I haven't tested it. I can say this though, Paul from New York (411whp guy) fit a Walbro 255lph GSS342 just by using a rotary tool to the inside of the fuel canister and it fit great. That specific model does not have an internal check valve however so pre-start priming is necessary.
The regulator is on the end of the stock return line. I posted a pic for Paul not too long ago in one of his threads. Its the only stainless steel component in the fuel canister so you can't miss it.
No, but Racetronix sells disc style for 75 bucks a piece with better static flow rates than 60s and better smaller short pulse flow rates as well. Check these out when you get bored http://www.racetronix.com/01D129xFM.html
The regulator is on the end of the stock return line. I posted a pic for Paul not too long ago in one of his threads. Its the only stainless steel component in the fuel canister so you can't miss it.
No, but Racetronix sells disc style for 75 bucks a piece with better static flow rates than 60s and better smaller short pulse flow rates as well. Check these out when you get bored http://www.racetronix.com/01D129xFM.html
Pump fits with minor cutting to the grey outlet connection and a small snippet off some of the black plastic inside the cap of the canister... fits perfectly.
Oh yeah Witt... cams got here today, and my injectors should be here friday.
450whp is coming very soon, gonna need a bigger pump though lol
04-01-2008, 09:25 PM
#177
Senior Member
Join Date: 03-03-06
Location: Pittsburgh, PA
Posts: 4,958
Likes: 0
Received 0 Likes
on
0 Posts
yeah man i'ts a little check ball thingy... looks scary easy to **** up lo.
Pump fits with minor cutting to the grey outlet connection and a small snippet off some of the black plastic inside the cap of the canister... fits perfectly.
Oh yeah Witt... cams got here today, and my injectors should be here friday.
450whp is coming very soon, gonna need a bigger pump though lol
Pump fits with minor cutting to the grey outlet connection and a small snippet off some of the black plastic inside the cap of the canister... fits perfectly.
Oh yeah Witt... cams got here today, and my injectors should be here friday.
450whp is coming very soon, gonna need a bigger pump though lol
Can't wait for both, the epic shenegans on the turnpike cruise out there with the goats and to check out your car.
04-01-2008, 10:44 PM
#179
yeah man i'ts a little check ball thingy... looks scary easy to **** up lo.
Pump fits with minor cutting to the grey outlet connection and a small snippet off some of the black plastic inside the cap of the canister... fits perfectly.
Oh yeah Witt... cams got here today, and my injectors should be here friday.
450whp is coming very soon, gonna need a bigger pump though lol
Pump fits with minor cutting to the grey outlet connection and a small snippet off some of the black plastic inside the cap of the canister... fits perfectly.
Oh yeah Witt... cams got here today, and my injectors should be here friday.
450whp is coming very soon, gonna need a bigger pump though lol
04-01-2008, 10:45 PM
#180
Senior Member
Join Date: 03-03-06
Location: Pittsburgh, PA
Posts: 4,958
Likes: 0
Received 0 Likes
on
0 Posts
Parking lot cam install?
04-03-2008, 06:11 PM
#183
I admit that I still have to dig deeper to fully understand the logic of my European Z22SE (=L61) engine's standard fuel system, but for my soon-to-be-installed LSJ I will very probably switch to a return style system.
All my other "high-ish" power engines (Opel/GM C20XE &C20LET turbo engines) had such systems:
Tank => Pump => filter => feed line=> FUEL RAIL => regulator (On other rail-end, regulates on manifold pressure 1:1) => Return-line to tank. It is very compact and it always worked flawless.
Especially for a (high) boosted car I think it is necessary to regulate fuel pressure to manifold pressure. I'm still new to the whole LSJ tuning, but I frequently see here (very) high IDC's... Or idle tuning problems with big injectors. But with this regulated return system the injector always sees the same pressure differential, so it's better for the injector spray pattern & working. Easier idle (low manifold & fuel pressure) and full boost tuning(high manifold + fuel pressure).
Just my thoughts...
All my other "high-ish" power engines (Opel/GM C20XE &C20LET turbo engines) had such systems:
Tank => Pump => filter => feed line=> FUEL RAIL => regulator (On other rail-end, regulates on manifold pressure 1:1) => Return-line to tank. It is very compact and it always worked flawless.
Especially for a (high) boosted car I think it is necessary to regulate fuel pressure to manifold pressure. I'm still new to the whole LSJ tuning, but I frequently see here (very) high IDC's... Or idle tuning problems with big injectors. But with this regulated return system the injector always sees the same pressure differential, so it's better for the injector spray pattern & working. Easier idle (low manifold & fuel pressure) and full boost tuning(high manifold + fuel pressure).
Just my thoughts...
04-03-2008, 08:14 PM
#184
Senior Member
Join Date: 05-02-07
Location: San Jose, CA
Posts: 1,061
Likes: 0
Received 0 Likes
on
0 Posts
I admit that I still have to dig deeper to fully understand the logic of my European Z22SE (=L61) engine's standard fuel system, but for my soon-to-be-installed LSJ I will very probably switch to a return style system.
All my other "high-ish" power engines (Opel/GM C20XE &C20LET turbo engines) had such systems:
Tank => Pump => filter => feed line=> FUEL RAIL => regulator (On other rail-end, regulates on manifold pressure 1:1) => Return-line to tank. It is very compact and it always worked flawless.
Especially for a (high) boosted car I think it is necessary to regulate fuel pressure to manifold pressure. I'm still new to the whole LSJ tuning, but I frequently see here (very) high IDC's... Or idle tuning problems with big injectors. But with this regulated return system the injector always sees the same pressure differential, so it's better for the injector spray pattern & working. Easier idle (low manifold & fuel pressure) and full boost tuning(high manifold + fuel pressure).
Just my thoughts...
All my other "high-ish" power engines (Opel/GM C20XE &C20LET turbo engines) had such systems:
Tank => Pump => filter => feed line=> FUEL RAIL => regulator (On other rail-end, regulates on manifold pressure 1:1) => Return-line to tank. It is very compact and it always worked flawless.
Especially for a (high) boosted car I think it is necessary to regulate fuel pressure to manifold pressure. I'm still new to the whole LSJ tuning, but I frequently see here (very) high IDC's... Or idle tuning problems with big injectors. But with this regulated return system the injector always sees the same pressure differential, so it's better for the injector spray pattern & working. Easier idle (low manifold & fuel pressure) and full boost tuning(high manifold + fuel pressure).
Just my thoughts...
Anyone got a pump?
04-07-2008, 09:42 PM
#186
Senior Member
Thread Starter
iTrader: (1)
Join Date: 12-10-06
Location: Puerto Rico
Posts: 978
Likes: 0
Received 0 Likes
on
0 Posts
Since I'm getting PM's here you go FYI
Fittings
3- Hose End, #6 AN Straight p/n 10600
1- #6 AN Port to #6 AN Flare (for use with Aeromotive check valve) p/n 77066
1- Hose End, #6 AN 90* bend
On the fuel rail use a 1/4 NPT to 6AN 90* bend fitting
Fittings
3- Hose End, #6 AN Straight p/n 10600
1- #6 AN Port to #6 AN Flare (for use with Aeromotive check valve) p/n 77066
1- Hose End, #6 AN 90* bend
On the fuel rail use a 1/4 NPT to 6AN 90* bend fitting
04-09-2008, 10:43 PM
#192
http://www.atpturbo.com/Merchant2/me...egory_Code=FUL
why dont we get some rails made? there are alot of people going 2 need these this year... just a thought... and they would make returnstlye setups a breeze...imo
why dont we get some rails made? there are alot of people going 2 need these this year... just a thought... and they would make returnstlye setups a breeze...imo
04-10-2008, 12:42 AM
#196
Senior Member
Join Date: 05-02-07
Location: San Jose, CA
Posts: 1,061
Likes: 0
Received 0 Likes
on
0 Posts
Linkage as ordered sir -> http://www.directautomotiveproducts.com/f45330r.html
Before you go out and buy this, realize that this rail comes with a big ass gaping hole right above the #4 injector. Not threaded, just a big hole. It is for the stock regulator that comes on that year cavi. I am having it tapped for -8 to match the other holes in it. It is a nice looking unit and will give straight through fuel from #1 to #4. It looks like it will bolt up, but I'll let you know this weekend when I put it in. The only concern I have is that there are no clips for the injectors. Prolly not a big deal, since the bottoms of the injectors have no clips on our system anyway.
Before you go out and buy this, realize that this rail comes with a big ass gaping hole right above the #4 injector. Not threaded, just a big hole. It is for the stock regulator that comes on that year cavi. I am having it tapped for -8 to match the other holes in it. It is a nice looking unit and will give straight through fuel from #1 to #4. It looks like it will bolt up, but I'll let you know this weekend when I put it in. The only concern I have is that there are no clips for the injectors. Prolly not a big deal, since the bottoms of the injectors have no clips on our system anyway.
04-10-2008, 12:50 AM
#200
Senior Member
Join Date: 09-05-07
Location: Sasebo Japan
Posts: 10,662
Likes: 0
Received 0 Likes
on
0 Posts
Linkage as ordered sir -> http://www.directautomotiveproducts.com/f45330r.html
Before you go out and buy this, realize that this rail comes with a big ass gaping hole right above the #4 injector. Not threaded, just a big hole. It is for the stock regulator that comes on that year cavi. I am having it tapped for -8 to match the other holes in it. It is a nice looking unit and will give straight through fuel from #1 to #4. It looks like it will bolt up, but I'll let you know this weekend when I put it in. The only concern I have is that there are no clips for the injectors. Prolly not a big deal, since the bottoms of the injectors have no clips on our system anyway.
Before you go out and buy this, realize that this rail comes with a big ass gaping hole right above the #4 injector. Not threaded, just a big hole. It is for the stock regulator that comes on that year cavi. I am having it tapped for -8 to match the other holes in it. It is a nice looking unit and will give straight through fuel from #1 to #4. It looks like it will bolt up, but I'll let you know this weekend when I put it in. The only concern I have is that there are no clips for the injectors. Prolly not a big deal, since the bottoms of the injectors have no clips on our system anyway.