S5 TII to go EFI or Carb???
09-06-08, 10:39 PM
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S5 TII to go EFI or Carb???
Ok I have a dillema I have S5 TII broken donw in my garage getting ready to rebuild and my biggest dillema right now is eather try to get the EFI working or just say srew it and get a holley 650 carb port the **** out of the motor and run it like that. The only problem is that I would have to use stock ECU if I went the EFI way. Any input is greatlly apreciated.
09-06-08, 11:33 PM
#3
TII motors are low comp. If you carb it, you'll have to build some kind of blow-through turbo setup, it wouldn't run N/A.
If you have a complete setup including ECU and harness then go EFI. If you don't have the harness or the ECU, get a standalone. Then again, if you're more comfy with carb, run with it. It's really a question of how much money, time, and effort you want to put in and how much do you know about either option already.
Jon
If you have a complete setup including ECU and harness then go EFI. If you don't have the harness or the ECU, get a standalone. Then again, if you're more comfy with carb, run with it. It's really a question of how much money, time, and effort you want to put in and how much do you know about either option already.
Jon
09-07-08, 12:10 AM
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It would run just fine NA. S5 is 9.0:1. The old ACVW engines went at least as low as 6.8:1. It's not like you're boosting while cranking. 
But I would recommend a smaller carb than that. I'd run a 48 IDA if I didn't like fuel injection. But if it was my engine I'd ditch the stock ECU and wiring and run a MegaSquirt. It's cheaper anyway.
But I would recommend a smaller carb than that. I'd run a 48 IDA if I didn't like fuel injection. But if it was my engine I'd ditch the stock ECU and wiring and run a MegaSquirt. It's cheaper anyway.
Last edited by PercentSevenC; 09-07-08 at 12:20 AM.
09-07-08, 07:54 AM
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I am going turbo I got the motor as a long block so everything is there I need a few more wires for the coils and the CAS and the MAF to run stock ecu I just cant swing for stand alone right now I have a baby on the way and a lot more house work to get finished before that and if I dont get the car done now I dont know if it will get done anytime soon after that so Iwas just wondering witch way would be simpler to do carb or efi.
09-07-08, 08:33 AM
#6
It would run just fine NA. S5 is 9.0:1. The old ACVW engines went at least as low as 6.8:1. It's not like you're boosting while cranking.
But I would recommend a smaller carb than that. I'd run a 48 IDA if I didn't like fuel injection. But if it was my engine I'd ditch the stock ECU and wiring and run a MegaSquirt. It's cheaper anyway.
But I would recommend a smaller carb than that. I'd run a 48 IDA if I didn't like fuel injection. But if it was my engine I'd ditch the stock ECU and wiring and run a MegaSquirt. It's cheaper anyway.
Very well put. I have a turbo motor that I've been running NA for 3 months while waiting for some additional mods and a tune before I hook up the tube from the IC to the intake. It runs just fine.
