turbo charged motor? 12v AFC anyone?
#1
turbo charged motor? 12v AFC anyone?
Has anyone replaced the heads on the 12v AFC motor with a head with more values?is that an option with the motor? or turbo charged it? I'm just interested, i really love the car and if i could turbo the stock motor without much investment i would love to.
#3
AudiWorld Super User
you can't install a 30v head on a 12v block! turbocharging has been done. in a year or two, ill be working on building a supercharged version of this motor
#4
Thanks for the information, both of you. the link was an very nice reference. The stock internals aren't rated for much boost i assume? I didn't want to do a rebuild since its my only car but if i can find a junkyard motor and put it in my basement to build while i have the stock one in my car i might be able to manage. Too bad i can't just change the heads i would have enjoyed that. I do need a new clutch eventually on my car in the next 6 months to year or so, i may try to plan this out when that happens if i decided to yank the motor out when its time.
#5
AudiWorld Super User
you have to consider that our motors are kinda high compression ratio motors, you can safely run about 6-8 psi... maybe 10 psi. if you want some good boost, pistons and rods and ARP hardware, are a must! you can pull a motor from a junkyard for about $200.
the clutch thing... well, the duall mass flywheel is majorly overpriced, you can convert to a single mass flywheel from a 7A motor (90-91 audi coupe) and use the clutch from a CQ as well. I'm running a 19.5 lbs single mass flywheel with a stage 2 SPEC clutch on my
here is some more fun stuff for you 12v Pages - The Engine - Features and Index of /audi
the clutch thing... well, the duall mass flywheel is majorly overpriced, you can convert to a single mass flywheel from a 7A motor (90-91 audi coupe) and use the clutch from a CQ as well. I'm running a 19.5 lbs single mass flywheel with a stage 2 SPEC clutch on my
here is some more fun stuff for you 12v Pages - The Engine - Features and Index of /audi
#6
I didn't realize 12v.org had all this information, its a wonderful website. A high compression turbo would be a challenge of sorts. I wont be getting the boost i really wanted, 20+ pounds. I may just stick to building a 4G63T (Mitsubishi) and rebuild the 90 to stock with some tasteful mods. But time will tell, the freakin junk yard in New York wants 850$ for a used motor. jeez
#7
AudiWorld Super User
for 850 you can order a rebuilt bottom end and i think it will be shipped to your door with that price. heads might set you back another $250-350 each, or much cheaper if you have a friend that can do that sorts of work.
custom pistons will set you back about $1100-1400 depending on the coating and etc, so it all depends how much you wanna spend.
custom pistons will set you back about $1100-1400 depending on the coating and etc, so it all depends how much you wanna spend.
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#8
AudiWorld Senior Member
When you get into that kind of money you should start thinking about an AAN or 3B and do a 20vt. Or even a 1.8T swap. WAY more power potential with lots of part support
#10
I didn't realize 12v.org had all this information, its a wonderful website. A high compression turbo would be a challenge of sorts. I wont be getting the boost i really wanted, 20+ pounds. I may just stick to building a 4G63T (Mitsubishi) and rebuild the 90 to stock with some tasteful mods. But time will tell, the freakin junk yard in New York wants 850$ for a used motor. jeez
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