Engine horsepower

[PRZNBUS]

I have a 1986 MC9 with a Reilabilt 8V92TA which was done in 2004. How do I find out what the horsepower is? The tag states everything is standard i.e. bore, cam and so forth.

The tag shows;

8FF5476
8087-78

What do I have?

Bruce

[bevans6]

Mostly the injector size guides the horsepower rating.  What injectors do you have?

Brian

[luvrbus]

The serial number says 355 hp at 2100 rpm,1180 ft lbs of torque @1200 rpm and 7G75 injectors,the 355 or 365 hp rating was a standard for the MCI 9 with a 8v92

[PRZNBUS]

Thanks!!!

Bruce

[TomC]

I'm running 7G75 injectors on my 8V-71 with air to air intercooling using a 12.7 Series 60 turbo with waste gate (to keep the boost down to around 15psi). I am now in Las Vegas for the SEMA/AAPEX show (it is also storming and raining now). On the way up yesterday, no smoke when pulling the Baker grade. No slower than 45mph pulling my car (34,750lbs). Turboing the 8V-71 REALLY wakes it up. The engine was dynode at 375hp and 1125lb/ft torque. Good Luck, TomC

[eagle19952]

I'm running 7G75 injectors on my 8V-71 with air to air intercooling using a 12.7 Series 60 turbo with waste gate (to keep the boost down to around 15psi). I am now in Las Vegas for the SEMA/AAPEX show (it is also storming and raining now). On the way up yesterday, no smoke when pulling the Baker grade. No slower than 45mph pulling my car (34,750lbs). Turboing the 8V-71 REALLY wakes it up. The engine was dynode at 375hp and 1125lb/ft torque. Good Luck, TomC

With what pistons ?

[TomC]

N.A. two piece pistons with 18.7:1 compression ratio with the tighter transit bus piston rings. This is why we stayed with the 12.7 Series 60 turbo with waste gate to keep the boost to just 15psi. A properly built turbo 8V-71 could go as high as 90 injectors. 80's were the last incarnation from Detroit as the 8V-71TA with 7G80 injectors putting out 400hp and 1200lb/ft torque-which by todays standards would be like a Cummins 8.9 liter ISL engine. Good Luck, TomC

[eagle19952]

N.A. two piece pistons with 18.7:1 compression ratio with the tighter transit bus piston rings. This is why we stayed with the 12.7 Series 60 turbo with waste gate to keep the boost to just 15psi. A properly built turbo 8V-71 could go as high as 90 injectors. 80's were the last incarnation from Detroit as the 8V-71TA with 7G80 injectors putting out 400hp and 1200lb/ft torque-which by todays standards would be like a Cummins 8.9 liter ISL engine. Good Luck, TomC

how much radiator (dimensions). how many rows ? any overheat oh s**t moments ?

air to air intercooler source ?

[TomC]

On my AMGeneral transit, they made a 96" and 102" wide version. On the 102" wide version, there was enough space in front of the radiator to mount the intercooler. I had a custom one made with a intercooler manufacturer (if I remember right) out of Tulsa, OK. They did a perfect job on it. On your Eagle-unless you still have the over the road A/C, you could install the intercooler where the A/C evaporator used to be.
My transit has limited radiator space. I increased the 5 row straight fin to a 6 row serpentine fin. It works OK up to 85 degrees. Then after that, I have to use misters. I plumbed into the fresh water system and originally used 15 patio misters from Home Depot. I needed more so I simply drilled out two of the misters with 1/16" drill and now it really works. When the temp gets past 185 (full open thermostat) I know it isn't coming back down. I turn on the misters (electric solenoid controlled from the dash) and within about 2 minutes, the temp comes down. Takes maybe 4 minutes of water to bring it down. This is only on long pulls-which out west we have many. Normal driving isn't a problem. Good Luck, TomC