Introduction: New member, new project, first ZR-1! - Page 4 - ZR-1 Net Registry Forums

Alex0413 · 07-05-2020

Next up was to test the injectors on the car with my buddies flow bench. The PO changed these injectors three years ago before the car was parked, and it still had a miss after he installed these new injectors.

I found one bad primary and one bad secondary injector. Were they bad when they were installed?.. possibly.. Are these Ford FOTE-05A fuel injectors compatible with this ZR-1?

I can either order a couple of these same injectors and flow match a full set (which would be very cheap to do). Or order the proper ZR-1 injectors..

https://www.youtube.com/watch?v=LYl4H1gCpOE

G8nightman · 07-05-2020

I would replace the injectors get a set of msd coils new wires and plugs

Sent from my iPhone using ZR-1 Net Registry

Alex0413 · 07-05-2020

Quote:

Originally Posted by G8nightman

I would replace the injectors get a set of msd coils new wires and plugs

Sent from my iPhone using ZR-1 Net Registry

I just installed new AC Delco coils and wires, so i'm good to go there. These injectors have low miles, but some are bad. I think I can just replace the two bad injectors, since this set has low mileage. A new set would be optimal, but the $800 price tag stings! I'm not certain they are the correct injectors installed though..

G8nightman · 07-05-2020

Depends how much you think your times is worth. Pulling the plenum a second time won?t be that hard.

Sent from my iPhone using ZR-1 Net Registry

EvanZR1 · 07-06-2020

I'd replace the injectors. Yeah it's $800, but you'll know they are good and won't have to pull the plenum a 2nd time to do them again (been there, done that). If you Google FOTE-05A it looks like it's actually a Bosch part, and is listed as a 20lb/hr injector with a 14.4Ohm resistance.

Alex0413 · 07-07-2020

I went ahead and ordered new injectors from South Bay injectors. Talked to some people running them in LT5's and they have great reviews. So i'm waiting on parts now in order to put her back together and do the first start!

Alex0413 · 07-12-2020

I was waiting on parts all week, and finally had a few things come in: L98 fuel sending unit and my 255 fuel pump. I went forward with Haibeck's single fuel pump conversion, and it was quite simple to do!

The connectors are different, due to the second fuel pump power wire for the LT5. So I swapped the LT5 plug onto my L98 sending unit.
IMG_3713.jpg

Installing the fuel pump is very straight forward. I ran the pump #2 power wire through the L98 sending unit by drilling a hole, and making a "Y" with the 1&2 power wires into the fuel pump power wire inside the unit.
IMG_3714.jpg

IMG_3716.jpg

I used solder joint connections on all my wires. They're water proof, and don't come apart like butt connectors.
IMG_3717.jpg

Alex0413 · 07-12-2020

I also did some routine maintenance while waiting:

Oil and filter change
new serpentine belt
new fuel filter
new battery

Now that I had a cleaned out fuel system, operational fuel pump, and fresh fuel filter, it was time to flush out my fuel lines. I disconnected them at the fuel rail, and rigged a bucket into them so I could flush fresh gas through the system and ensure no garbage would get into my new injectors. I was shocked at how much crap came out of the line with a new fuel filter installed:

IMG_3719.jpg

Alex0413 · 08-07-2020

Time for an update on my progress, been busy with work!

I got my fuel injectors in and put them on the flow bench to test everything before I installed them in the IH. All the injectors tested within 2%! I went ahead with installing the new injectors. Once installed I pressure up my pumps to test the seal on the O-rings, thank goodness I did:
IMG-3726.jpg

An O-ring got pinched, so I pulled one off an old O-ring , bolted the rails back down and tested pressure: Good to Go!

Time to button up the Plenum and put everything back together now I have a fresh ignition and fuel system.

Alex0413 · 08-07-2020

Now I had the beautiful LT5 back together with a fresh and clean fuel system, and new AC Delco ignition: It's time to see if she starts! I first pulled the plugs and turned over the engine until I got oil pressure so it was primed, then put the fresh plugs back in and turned the key:

https://www.youtube.com/watch?v=vS1aLlL8FUQ

SHE'S ALIVE!!!!!

07-05-2020	#31
Alex0413 Join Date: Jun 2020 Location: Baton Rouge, LA Posts: 46	Re: Introduction: New member, new project, first ZR-1! Next up was to test the injectors on the car with my buddies flow bench. The PO changed these injectors three years ago before the car was parked, and it still had a miss after he installed these new injectors. I found one bad primary and one bad secondary injector. Were they bad when they were installed?.. possibly.. Are these Ford FOTE-05A fuel injectors compatible with this ZR-1? I can either order a couple of these same injectors and flow match a full set (which would be very cheap to do). Or order the proper ZR-1 injectors.. https://www.youtube.com/watch?v=LYl4H1gCpOE

07-05-2020	#32
G8nightman Join Date: Dec 2007 Location: NYC Posts: 1,188	Re: Introduction: New member, new project, first ZR-1! I would replace the injectors get a set of msd coils new wires and plugs Sent from my iPhone using ZR-1 Net Registry __________________ 90 Chevy ZR1 LPE #2315 'SOLD' 90 Chevy ZR1 LPE #2774 'SOLD' 91 Chevy ZR1 Callaway aerobody 91 Chevy ZR1 #1512 91 Chevy ZR1 #951 95 Chevy ZR1 #338 'SOLD' 91 BMW 850i 94 BMW 850csi 95 BMW 850csi 94 Lotus Esprit S4 07 Benz CLS550 06 BMW M5 "SOLD"

07-05-2020	#34
G8nightman Join Date: Dec 2007 Location: NYC Posts: 1,188	Re: Introduction: New member, new project, first ZR-1! Depends how much you think your times is worth. Pulling the plenum a second time won?t be that hard. Sent from my iPhone using ZR-1 Net Registry __________________ 90 Chevy ZR1 LPE #2315 'SOLD' 90 Chevy ZR1 LPE #2774 'SOLD' 91 Chevy ZR1 Callaway aerobody 91 Chevy ZR1 #1512 91 Chevy ZR1 #951 95 Chevy ZR1 #338 'SOLD' 91 BMW 850i 94 BMW 850csi 95 BMW 850csi 94 Lotus Esprit S4 07 Benz CLS550 06 BMW M5 "SOLD"

07-06-2020	#35
EvanZR1 Join Date: Nov 2010 Location: Omaha Posts: 403	Re: Introduction: New member, new project, first ZR-1! I'd replace the injectors. Yeah it's $800, but you'll know they are good and won't have to pull the plenum a 2nd time to do them again (been there, done that). If you Google FOTE-05A it looks like it's actually a Bosch part, and is listed as a 20lb/hr injector with a 14.4Ohm resistance. __________________ Evan 2024 Z06 SOLD - 1991 Admiral Blue ZR-1 SOLD - 2012 Carlisle Blue Metallic ZR1 - 800HP SOLD - Steel Blue 91 391cid ZR-1 #391 SOLD - Black 91 ZR-1

07-07-2020	#36
Alex0413 Join Date: Jun 2020 Location: Baton Rouge, LA Posts: 46	Re: Introduction: New member, new project, first ZR-1! I went ahead and ordered new injectors from South Bay injectors. Talked to some people running them in LT5's and they have great reviews. So i'm waiting on parts now in order to put her back together and do the first start!

07-12-2020	#37
Alex0413 Join Date: Jun 2020 Location: Baton Rouge, LA Posts: 46	Re: Introduction: New member, new project, first ZR-1! I was waiting on parts all week, and finally had a few things come in: L98 fuel sending unit and my 255 fuel pump. I went forward with Haibeck's single fuel pump conversion, and it was quite simple to do! The connectors are different, due to the second fuel pump power wire for the LT5. So I swapped the LT5 plug onto my L98 sending unit. IMG_3713.jpg Installing the fuel pump is very straight forward. I ran the pump #2 power wire through the L98 sending unit by drilling a hole, and making a "Y" with the 1&2 power wires into the fuel pump power wire inside the unit. IMG_3714.jpg IMG_3716.jpg I used solder joint connections on all my wires. They're water proof, and don't come apart like butt connectors. IMG_3717.jpg

08-07-2020	#39
Alex0413 Join Date: Jun 2020 Location: Baton Rouge, LA Posts: 46	Re: Introduction: New member, new project, first ZR-1! Time for an update on my progress, been busy with work! I got my fuel injectors in and put them on the flow bench to test everything before I installed them in the IH. All the injectors tested within 2%! I went ahead with installing the new injectors. Once installed I pressure up my pumps to test the seal on the O-rings, thank goodness I did: IMG-3726.jpg An O-ring got pinched, so I pulled one off an old O-ring , bolted the rails back down and tested pressure: Good to Go! Time to button up the Plenum and put everything back together now I have a fresh ignition and fuel system.