Good sized injectors
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Member
Joined: Dec 2000
Posts: 121
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From: Crawfordsville, IN
Car: 1991 Galant VR4
Engine: 2.0L 4G63 Turbo
Transmission: 5sp transaxle/transfer case
Good sized injectors
What is a proper size injector for an engine creating around 650HP?
36lb/hour?
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1986 Camaro
Carbureted 305
700R4
36lb/hour?
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1986 Camaro
Carbureted 305
700R4
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Joined: Jul 2000
Posts: 1,157
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From: Columbus,OH
30lb/hr @ 55-60psi and .42-.45BSFC
36lb/hr too many to list
if you want it to be easy to tune go with the 36lb/hr you only need to run 40psu
the source of this is GM Hi Tech Performance Jan 98 issue. If you would like the cahrts email me at Kfelts@zoomnet.net and I will scann them for you
36lb/hr too many to list
if you want it to be easy to tune go with the 36lb/hr you only need to run 40psu
the source of this is GM Hi Tech Performance Jan 98 issue. If you would like the cahrts email me at Kfelts@zoomnet.net and I will scann them for you
Junior Member
Joined: Jan 2001
Posts: 31
Likes: 0
From: st.paul mn usa
A book I have says multiply horse power by .45 then divide by 8, use .55 if you are using supercharger.
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1987 T.A.
4 bolt 40 over MSD 6al BBK/EDL throttle body Accel coil, wires Compu Cam Roller roc K&N filter Jet custom chip Removed screens and cooling fins on M.A.F. Ported Corvette heads 700r4 shift kit 40+ 4th gear 2300 stall Stock GTA rims with 255/50/16 rear 245/50/16 front Z rated comp ta's
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1987 T.A.
4 bolt 40 over MSD 6al BBK/EDL throttle body Accel coil, wires Compu Cam Roller roc K&N filter Jet custom chip Removed screens and cooling fins on M.A.F. Ported Corvette heads 700r4 shift kit 40+ 4th gear 2300 stall Stock GTA rims with 255/50/16 rear 245/50/16 front Z rated comp ta's
TGO Supporter
Joined: Jul 1999
Posts: 10,907
Likes: 4
From: The Bone Yard
Car: Death Mobile
Engine: 666 c.i.
What system are you planning to use EFI on? With SD or MAF, large injectors require very short pulse widths at low rpm which can cause a problem.
Also high impedence injectors like the TPI system have limits on the size of "affordable" injectors. Larger injectors are available, but get expensive.
Also high impedence injectors like the TPI system have limits on the size of "affordable" injectors. Larger injectors are available, but get expensive.
TGO Supporter
Joined: Jul 1999
Posts: 10,907
Likes: 4
From: The Bone Yard
Car: Death Mobile
Engine: 666 c.i.
You might want to post this question on the PROM Board and ask "Will I have problems with TPI making 650 HP"?
I believe you will find a problem with the short pulse widths for idling, 650 HP will probably cause the MAF system to max out to 255 gm/sec at relatively low rpms, and SD probably will have problems with a low MAP.
I believe you will find a problem with the short pulse widths for idling, 650 HP will probably cause the MAF system to max out to 255 gm/sec at relatively low rpms, and SD probably will have problems with a low MAP.
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