DennisReinhart
Registered
I was asked to post this here for some members to see, Here is a kit that my friend at Apten Performance and I came up with, on the Mark 8 there is one cooling port on the passenger side there is none on the drivers side, because of that cylinders # 7 and 8 run over 50 degrees hotter, this can cause spark knock as well as detonation and if a piston lets go on either the SOHC or the DOHC its normally # 5 or 7.
Here is a picture of the back of the Marauder engine and the freeze plugs, as you can see this would be very difficult with the engine in the car. The marauder and the SOHC have no water flow out of either head, unlike the Cobra and Mark 8 motors they have one water outlet fitting on the passenger head, so water comes out of the passenger head then flows through the heater core and back out of the heater core into the heater a hose that is connected to a rigid line that runs down the intake valley into the back of the water pump.
The Mark 8 works the same, what you would do is Tee the water flow out of the drivers head into the heater hoses going to the heater core. The marauder has no cross over in the back of the head and no water flow out of either head as shown in the below picture. Now if you look at this picture water flows out of the rigid tube on the right side into the heater core then out and through a heater hose into a rigid line that runs down the head on the passenger side into a hose that connects to the front crossover pipe. The easiest time to do this modification is when you do the transmission upgrade while the transmission is out his is a piece of cake.
Now if you look at the pictures below you can clearly see that you will have complete water flow out both heads, this will dramaticly decrease cylinder tempratures wich will decrease spark knock, and may may make possible to run more timing wich will equate to more useable RWHP.
Here is a picture of the back of the Marauder engine and the freeze plugs, as you can see this would be very difficult with the engine in the car. The marauder and the SOHC have no water flow out of either head, unlike the Cobra and Mark 8 motors they have one water outlet fitting on the passenger head, so water comes out of the passenger head then flows through the heater core and back out of the heater core into the heater a hose that is connected to a rigid line that runs down the intake valley into the back of the water pump.
The Mark 8 works the same, what you would do is Tee the water flow out of the drivers head into the heater hoses going to the heater core. The marauder has no cross over in the back of the head and no water flow out of either head as shown in the below picture. Now if you look at this picture water flows out of the rigid tube on the right side into the heater core then out and through a heater hose into a rigid line that runs down the head on the passenger side into a hose that connects to the front crossover pipe. The easiest time to do this modification is when you do the transmission upgrade while the transmission is out his is a piece of cake.
Now if you look at the pictures below you can clearly see that you will have complete water flow out both heads, this will dramaticly decrease cylinder tempratures wich will decrease spark knock, and may may make possible to run more timing wich will equate to more useable RWHP.