Air to Air Intercooler

[TomC]

Update-Don Fairchild has the engine cradle out, has sent in the transmission to be rebuilt, pulled the top cylinder head and popped one of the pistons out and discovered we can use the piston rings that are already in it! So that will cut down on some time and cost.

The first picture is of the air to air intercooler.  I had to cut the outside shroud to fit the plumbing, then refitted it back in with it bolted so I can take it apart if I have to get the radiator out, and siliconed in the gaps so no hot air gets to the cool side of the radiator.  The other picture is the top of the radiator viewed from the engine side to show the plumbing of the air to air intercooler for Don to complete.  To better see it, the ends of the pipes have temporary orange dust caps on them.  I'm looking forward to the better performance and hopefully better fuel mileage (would be satisfied with one more mpg)  Good Luck, TomC

[David Anderson]

Nice job, Tom.

Any idea how this will affect your coolant temperatures?  How did you have room to install this between the bus skin and the radiator?

David

[TomC]

David- as to coolant temps, this is the same radiator they used with the 8V-71TA option.  Also, since the bus is 102" wide, the placement of the engine is the same as the 96" (so extra edge space) and in 1977 they mounted the coach A/C condenser in front of the radiator instead of up high in the rear of the roof.  So I already had the mounting bolts to use for the intercooler.  On a GMC where there isn't the space between the outside edge and the radiator for the intercooler, you could mount it on the opposite side where the transmission door is with a 12v radiator fan pulling air through, since the heat rejection is no where near what a normal radiator is.  Good Luck, TomC