|  | Need To Fix Your Car or Truck? |  | | | | | | | | | |  | |  |
| | | | | | |
| Jeep Engine >> VALVE SEAT INSTALLATION CAUTION
Valve Seat Installation Caution On
Chrysler 4.0L Engines
AERA members have reported coolant loss on Chrysler 4.0L engines used in the Jeep vehicles. This loss occurs shortly after cylinder head remanufacture and can vary in amounts.
If exhaust valve seats are installed during cylinder head rebuild process, the counterbore tool may break into the coolant passages of the head. A valve seat counterbore as small as 1.500 outside diameter by .218 deep may create a through passage. Although each individual head casting may vary in casting thickness in this area, caution should be used in seat selection. Pressure
checking the head after seat installation is advised.
If a seat is installed into the number one cylinder, you may be able to see the newly created passage by looking through the thermostat housing opening at the very front of the head (see illustration).
The AERA Technical Committee
Looking for replacement Jeep engines? Visit our online Rebuilt Engines Store.
Need to fix your Jeep engine? Access here the comprehensive online repair guide for your Jeep engine.
Click Here to find a used Jeep engine.
|
|
