Thanks for the pics of the turbo.
Never seen real pics of the internals.
Module:
My 79 2.3T uses a Motorcraft DY-237-A or D9AZ-12A199C module assy.
Two yellow strain reliefs on side. One has 2 wires, one has 4.
No other connections. Two black harness connectors.
Connectors, wire codes to module:
One 2 wire (pink, white), one 4 wire (green, orange, purple, black/green stripe).
The 2 wire connects to the sensors. The 4 wire connects to the distributor.
Only other turbo boost related item under hood is the two level sensor assy on fender.
For red over boost warning light/buzzer, green TURBO light, ignition timing retard under boost.
The warning modules, buzzers, are behind ps dash.
Oil fitting for turbo bearing:
The brass oil feed fitting to the bearing looks the same as mine.
It is the oem one. A spare turbo has the same.
Turbo mounting o-rings:
The turbo o-rings are included in Fel-Pro HS 8993 PT-1 head set kit (gaskets).
Turbo Mounting "O" ring, individual listings on box, says p/n 95159, 95160, 95161, Taiwan.
Ran across the same problem finding 720816 kit in stock. Ordered one from local auto parts.
The 4th o-ring:
Had to use one regular o-ring. Did not come in kit. Of course i measured it. Thickness and dia.
Had the other 3.
Was the rectangular shaped one, aluminum manifold flange adapter. Is just a reg round in a rect. groove.
Used a dental pick to get it out. Old one was pretty well shrunk below the flange.
The o-rings are not NASA items. Nothing special far as i know, other than having oil rated spec.
Felpro ES72816:
https://www.napaonline.com/en/p/FPBES72816
https://www.summitracing.com/parts/f...SABEgIQS_D_BwE
Any auto part store could order the 720816 kit if not in stock.
I see Mahle offers full gasket kits too per AZ site.
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