TPI tech article...
Thread Starter
Safety Car
Joined: Oct 2007
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From: :45 minutes from everywhere / E-I-E-I-O
TPI tech article...
If anything is wrong LET US KNOW; but post up documents - FSM diagnostic procedures, FSM schematics, other articles, source code for PCM, etc.
Disregard my photochop comments - I don't get paid for wrenchin'. The author does tho, I'm guessin'.
7 pages; gimme' a minute to get 'em all posted up...
Disregard my photochop comments - I don't get paid for wrenchin'. The author does tho, I'm guessin'.
7 pages; gimme' a minute to get 'em all posted up...
Le Mans Master
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From: No HOA, New Hampshire
Cruise-In X Veteran
St. Jude Donor '09
Oxygen doesn't burn, fuel burns and the oxygen supports the burn. I wouldn't believe everything in that article, but some statements are right on.
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Team Owner
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Le Mans Master
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The pressure switch is a back should the relay fail. At the 5 lb setting it has , I think it would be of little value if you were pulling some revs and lost pressure.
Race Director
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The sizing on injectors is incorrect. This article states 19lb/hr for 305 motors and 24lb/hr for 350 motors.
In my reading, I found 19lb/hr for early 350's, then 22lb later. (I don't remember for sure, but I'd guess they went up to 22lb with the advent of alum heads).
After the TPI was dropped for the LT1 motor, 24lb'ers were finally used.
I also think their discussion of when a superram or mini is appropriate is very subjective.
In my reading, I found 19lb/hr for early 350's, then 22lb later. (I don't remember for sure, but I'd guess they went up to 22lb with the advent of alum heads).
After the TPI was dropped for the LT1 motor, 24lb'ers were finally used.
I also think their discussion of when a superram or mini is appropriate is very subjective.
Last edited by GREGGPENN; Jun 29, 2008 at 11:57 AM.
Supporting Vendor
Joined: Mar 2008
Posts: 1,762
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From: Cumming Ga
The sizing on injectors is incorrect. This article states 19lb/hr for 305 motors and 24lb/hr for 350 motors.
In my reading, I found 19lb/hr for early 350's, then 22lb later. (I don't remember for sure, but I'd guess they went up to 22lb with the advent of alum heads).
After the TPI was dropped for the LT1 motor, 24lb'ers were finally used.
I also think their discussion of when a superram or mini is appropriate is very subjective.
In my reading, I found 19lb/hr for early 350's, then 22lb later. (I don't remember for sure, but I'd guess they went up to 22lb with the advent of alum heads).
After the TPI was dropped for the LT1 motor, 24lb'ers were finally used.
I also think their discussion of when a superram or mini is appropriate is very subjective.
l98 85 used a Bosch 24lb injector with a 36psi rail pressure net 22lbs.
l98 86-88 used a bosch injector 22 lb at rail pressure of 43.5 net 22lbs
l98 89-91 used a Rochester Multec 1 22lb at rail pressure of 43.5 net 22lbs
92-93 LT1 used a 22lb Multec 1 22lb at 43.5 psi
94-95-96 LT1 went to sequential injection and a 24lb Multec II at 43.5 psi
96 LT4 uses a 26lb multec 2 at 43.5 psi.
97-up LS1 uses a bosch design 3 24lb injector flowing at 55psi net 28lbs. These are also 12.8 ohm coils vs 15 on the SVO.
If you put an LS1 injector in a c-4 with stock pressure it is a 24lb injector.. The Bosch SVO(FORD) flows 25.25 at 43.5
I have had 2 93 lt1's with a 24lb but both cars were california. All the other were as above..
I also have had 88's with a 22lb lucas. These were factory installed also.
the 19lb injectors were only used in LB9 camaro, f,bird TPI and some california emmision 5.7 engines used in other GM lines.
