Adding turbo to '83 MCI 6v92?

[TomC]

As I've stated many times before, turboing an 8V-71 really wakes it up. The standard N55 injector 8V-71 put out 270hp and 675lb/ft torque. N60 injectors were 290hp and 740lb/ft torque. N65 injectors were 308hp and 800lb/ft torque. My turboed 8V-71 with 7G75 injectors is 375hp and 1125lb/ft torque. If you build the 8V-71 to a maximum turbo engine, 400hp and 1200lb/ft torque with 7G80 injectors can by had. Almost twice the torque of N55 engine. Good Luck, TomC

[skytripping]

As I've stated many times before, turboing an 8V-71 really wakes it up. The standard N55 injector 8V-71 put out 270hp and 675lb/ft torque. N60 injectors were 290hp and 740lb/ft torque. N65 injectors were 308hp and 800lb/ft torque. My turboed 8V-71 with 7G75 injectors is 375hp and 1125lb/ft torque. If you build the 8V-71 to a maximum turbo engine, 400hp and 1200lb/ft torque with 7G80 injectors can by had. Almost twice the torque of N55 engine. Good Luck, TomC

Thanks Tom. I see you've contributed a lot to the thread I posted above. Is there a relatively easy way for me to see what my current engine is rated at so I can get an estimate on what I would be paying to upgrade for increased power and efficiency? I am not sure we need to get better power out of this engine, but I would definitely like to know my options.

[eagle19952]

Is there a relatively easy way for me to see what my current engine is rated at

start by pulling the easy valve cover and see what tag is on the injector yellow tag is n70 and n65 is a brown tag...iirc.

[Branderson]

8v71...reliable. Gutless. Boring.


Like driving an old Toyota Camry.

Good luck


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I have a 6v92 as well and she don't like hills either.  Man if I don't see the hill early in order to pick up speed, I pay for it.  What I tell everyone is she's not fast but she's steady.

[chessie4905]

Big word is reliable. The ones with jacked horsepower requires a constant eye on engine temperature. Even spending the money on turboing isn't going to make great improvements. Probably 5 to 10 mph on medium mountain grade. Keep in mind how much added weight makes a difference during  the conversion empty or full liquid tanks, toters, trailers etc.