The Great Pumpkin - '71 Duster
OK, finally back on the horse. Worked on the remote trans cooler lines today. (See post #444 for the initial cooler install). I had to put the trans in so I could see where everything would end up, no way to do it otherwise. Right now, the front of the trans is being held up by a pole jack with a block of wood between the pan and bell housing. The lines are loosely mocked up into place for now. Pics and story below.
The hose ends off the cooler taps are 90º in front and 150º off the rear one. The 150º hose end helps smooth the first bend and directs the hose towards the trail shaft so it routes through/above the mount area more easily. The front hose is long enough where it just goes straight through. Once installed the front hose will be installed more straight up so it's not sitting directly in front of the band adjuster like it is now.
Eventually the heavy-*** cast pan you see above will be replaced by a shorter, lighter (more expensive) Moroso pan because it has a provision for a fluid temp sensor. The temp sensor (5V ref. type) will run to the Holley ECU as an input. The 5V signal will turn on the fan at *** temp and turn it off when it goes below. This eliminates need for a thermostatic switch and wiring to control the fan at the back of the car. All that's needed is the one power wire from the ECU to the fan and a ground wire. The temp sensor wiring will be short and go through the floor to the ECU under the dash.
Here's how the lines will come through the rear trans mount area. They will hug the floor and route over to the driver's side frame connector where they will meet the hard lines. Short of drilling more holes in the frame, buying more $30 thru-frame fittings and running them to the outside, this was the best way to route the hoses. Running them under the trans. mount did not make sense to me because they would have been really close to the exhaust. They will get some sort of abrasive/heat shielding as they will pass over the exhaust but they should be far enough away now.
Here are the hard lines. They look a little wonky because they are bungeed to the frame connector. These will get gravel guard to prevent damage on the street. I have to finish bending up the front of the hard lines to see where the hoses will meet them. I'll probably have to stagger them a bit on the frame connector so there is enough room to deal with the fittings.
These are the lines coming off the cooler and heading towards the front of the car. These two hoses will live along the inside of the rear frame rail and follow the wheel arch almost to where the parking brake cable bracket is. The tail pipe gets a little close at one point but a couple inches of heat shield will keep them insulated. These will get some sort of protective wrap to keep them from getting damaged back here where they are exposed to the road surface. It may not look like it but there is plenty of room in front of that J bolt to pass the hose and fittings through.
So far so good on this. Took a little thought but it seems like a decent alternative to running it to the front of the car. There's so much clutter with it up front and there's no longer anything blocking the radiator. Routing the lines away from heat and moving parts is a PITA, BTDT. Plus, with the cooler in the back, the lines are longer which adds fluid volume to aid cooling. Seems like all win to me.
Also, if I was smart, I'd tell myself to tackle the transmission-associated wiring and shifter cable routing while the unit is mocked into place. We'll see if that message gets acted on.
More to come.
OK, finally back on the horse. Worked on the remote trans cooler lines today. (See post #444 for the initial cooler install). I had to put the trans in so I could see where everything would end up, no way to do it otherwise. Right now, the front of the trans is being held up by a pole jack with a block of wood between the pan and bell housing. The lines are loosely mocked up into place for now. Pics and story below.
The hose ends off the cooler taps are 90º in front and 150º off the rear one. The 150º hose end helps smooth the first bend and directs the hose towards the trail shaft so it routes through/above the mount area more easily. The front hose is long enough where it just goes straight through. Once installed the front hose will be installed more straight up so it's not sitting directly in front of the band adjuster like it is now.
Eventually the heavy-*** cast pan you see above will be replaced by a shorter, lighter (more expensive) Moroso pan because it has a provision for a fluid temp sensor. The temp sensor (5V ref. type) will run to the Holley ECU as an input. The 5V signal will turn on the fan at *** temp and turn it off when it goes below. This eliminates need for a thermostatic switch and wiring to control the fan at the back of the car. All that's needed is the one power wire from the ECU to the fan and a ground wire. The temp sensor wiring will be short and go through the floor to the ECU under the dash.
Here's how the lines will come through the rear trans mount area. They will hug the floor and route over to the driver's side frame connector where they will meet the hard lines. Short of drilling more holes in the frame, buying more $30 thru-frame fittings and running them to the outside, this was the best way to route the hoses. Running them under the trans. mount did not make sense to me because they would have been really close to the exhaust. They will get some sort of abrasive/heat shielding as they will pass over the exhaust but they should be far enough away now.
Here are the hard lines. They look a little wonky because they are bungeed to the frame connector. These will get gravel guard to prevent damage on the street. I have to finish bending up the front of the hard lines to see where the hoses will meet them. I'll probably have to stagger them a bit on the frame connector so there is enough room to deal with the fittings.
These are the lines coming off the cooler and heading towards the front of the car. These two hoses will live along the inside of the rear frame rail and follow the wheel arch almost to where the parking brake cable bracket is. The tail pipe gets a little close at one point but a couple inches of heat shield will keep them insulated. These will get some sort of protective wrap to keep them from getting damaged back here where they are exposed to the road surface. It may not look like it but there is plenty of room in front of that J bolt to pass the hose and fittings through.
So far so good on this. Took a little thought but it seems like a decent alternative to running it to the front of the car. There's so much clutter with it up front and there's no longer anything blocking the radiator. Routing the lines away from heat and moving parts is a PITA, BTDT. Plus, with the cooler in the back, the lines are longer which adds fluid volume to aid cooling. Seems like all win to me.
Also, if I was smart, I'd tell myself to tackle the transmission-associated wiring and shifter cable routing while the unit is mocked into place. We'll see if that message gets acted on.
More to come.
