drawing for lateral pipe
Swansons square
There is no exact formula to lay out pipe miters, but there is information that must be known to calculate the layout. This includes the diameter, wall thickness, angle, and offset.
coolant leak more than likely heater hose pipe
Strapped to the rear exhaust pipe
Heater coolant bypass pipe It would be the return hose for the heater.
You can saddle branches of the same size or smaller onto headers at various degrees. There are typical 16-division layout; and also a 64-division layout to calculate information for mitered ells and rolling offsets.
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I'll tell you how I did it on my Ford Expedition, in the hopes that it will help you. First, same / similar coolant line on my 1998 Expedition comes directly out of (possible under) the intake manifold and I'm told it must be machined out. The leak I had was near where the pipe was connected to a rubber coolant line, so I cut the metal coolant pipe just after the leak, inspected to make sure the rest of the pipe wasn't rusted, and I connected the pipe to the coolant line. This saved me from having to remove the intake manifold and have the pipe machined out. On the Expeditionordered the pipe is one diameter and the coolant hose is another (larger). For this reason, and because I could not find a "reducer" to make the size change, I ordered the entire metal coolant pipe (actually referred to as a tube) and I just connected it to what was left of the pipe going to the intake manifold and then straight to the coolant line. I did not cut the new coolant tube just in case I ever need to go all the way with replacing the tube. It's been a month, and it's still working GREAT! Hope this helps.
You should see a horizontal steel pipe just in front of the engine. This pipe has the bleeder screw.
The Quick Fit System is a training program that many contractors use to layout any lateral/dummy leg in 30 minutes with perfect results.
look for a plug on a coolant pipe that has 1 black and 1 yellow wire that will be the coolant temp. sensor