Injector & ECU question
Thread Starter
Racer
Joined: Feb 2004
Posts: 334
Likes: 1
From: Fl
Thank You. I really hope they work out to. If they can pass any kind of smog, then I am sure they will work just fine(even though I do not have to worry about it).
From what I gathered. All the FMS 24's are the same, just different color top, depending when they were made. I have seen them in blue, black, green & orange(from various searches). Anyone know if there is a difference or are they like all the others? Depending on who actually made the injectors & when they were made.
Just as long as they have PN #M-9593-A302 stamped on them correct?
This is, from what I gather the part number for them, regardless of the color.
For future reference
GEFracing has them for $185
INJECTORS
From what I gathered. All the FMS 24's are the same, just different color top, depending when they were made. I have seen them in blue, black, green & orange(from various searches). Anyone know if there is a difference or are they like all the others? Depending on who actually made the injectors & when they were made.
Just as long as they have PN #M-9593-A302 stamped on them correct?
This is, from what I gather the part number for them, regardless of the color.
For future reference
GEFracing has them for $185
INJECTORS
Last edited by CoffeeDrip; Jan 21, 2006 at 10:17 PM.
Melting Slicks
Joined: Oct 2000
Posts: 3,426
Likes: 4
From: Heidelberg PA
Cruise-In V Veteran
Consider the ford 24# especially if you are considering upgrades and definately go with the Holley afpr. They are sold by summit part#HLY-512-501. I went through 2 other AFPR's before I was told about this one.
I use 24#'s and used the Holley fuel regulator when I had the SuperRam with no problems.
I use 24#'s and used the Holley fuel regulator when I had the SuperRam with no problems.
Thread Starter
Racer
Joined: Feb 2004
Posts: 334
Likes: 1
From: Fl
85vet, what is the difference between the BBK & Holley(if you have experience with the BBK)? Is the Holley a much better performer? I know the BBK that is on here now seems to be working rather well. One advantage I can see is that it looks like the Holley has a turntable type wheel on it vs. the PITA to get to 5/16 bolt of the BBK(but it isn't to bad with a ignition wrench). Plu sit isnt BLUE 
If the BBK does crap out on me then I will give the Holley a go.
If the BBK does crap out on me then I will give the Holley a go.
Melting Slicks
Joined: Oct 2000
Posts: 3,426
Likes: 4
From: Heidelberg PA
Cruise-In V Veteran
Originally Posted by CoffeeDrip
85vet, what is the difference between the BBK & Holley(if you have experience with the BBK)? Is the Holley a much better performer? I know the BBK that is on here now seems to be working rather well. One advantage I can see is that it looks like the Holley has a turntable type wheel on it vs. the PITA to get to 5/16 bolt of the BBK(but it isn't to bad with a ignition wrench). Plu sit isnt BLUE If the BBK does crap out on me then I will give the Holley a go.
If the BBK does crap out on me then I will give the Holley a go.
Melting Slicks
Joined: Nov 2002
Posts: 2,471
Likes: 2
From: 1993 Quasar Blue 'vert Scottsdale AZ
Originally Posted by GRX
CoffeeDrip, I have the FMS from five-o, "blue" injectors. Just passed smog and the they are working great. Good Luck.
Thread Starter
Racer
Joined: Feb 2004
Posts: 334
Likes: 1
From: Fl
My BBK came with all new stuff also(shows no diaphram, but it came with a new one. That was the only reason I did get it. Is the holley unit fairly new, because I do not recall seeing it 2 years ago? Then again, I do a search for 1985 vette & the holley doesnt come up.
As for the chip. Yeah, i'm sending it out to pcmforless. I just want to make sure everything is in working order before doing so. Just incase I need ot change something. I have found that the blue, green, orange, ect top. All have the same part number. So I have the "blue" tops coming. They are just orange.
Everythign should be here tomorrow.
As for the chip. Yeah, i'm sending it out to pcmforless. I just want to make sure everything is in working order before doing so. Just incase I need ot change something. I have found that the blue, green, orange, ect top. All have the same part number. So I have the "blue" tops coming. They are just orange.
Everythign should be here tomorrow.
Team Owner
Joined: May 2002
Posts: 24,337
Likes: 25
From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
Originally Posted by vader86
85s injectors are 24lb/hr. 86's went to 22lb/hr.
However, the 2 injectors are rated at different PSI's, so effectively they are the same.
End of story..
However, the 2 injectors are rated at different PSI's, so effectively they are the same.
End of story..
Actual flow depends on the actual pressure. GM increased fuel pressure and decreased injector size throughout the C4 run, maintaining pretty much 21#/hr for all the L98s and LT1s.
My engine is rated at 230 hp. But it doesn't make 230 hp at half throttle.
In short, 24# ford injectors are a direct replacement for stock 85 injectors.
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Team Owner
Joined: May 2002
Posts: 24,337
Likes: 25
From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
Coffee Drip, whatever injectors you end up with, write down their rating and rated pressure (most likely 43.5 psi).
Use this to find what pressure to run them at to get the #/hr you want. Remember, stock it used 21 #/hr.
F2 = F1 * squareroot(P2/P1)
F1 = rated flow
F2 = desired flow
P1 = rated pressure
P2 = pressure you need to adjust your afpr to get about the right desired flow.
Use this to find what pressure to run them at to get the #/hr you want. Remember, stock it used 21 #/hr.
F2 = F1 * squareroot(P2/P1)
F1 = rated flow
F2 = desired flow
P1 = rated pressure
P2 = pressure you need to adjust your afpr to get about the right desired flow.