Engine Builder Tech Center
Increased crankshaft journal dimensions for 1995-2002 Kia 1.8L VIN 5 engines.

Engine Builders: The AERA Technical Committee offers the following information on increased crankshaft journal dimensions for 1995-2002 Kia 1.8L VIN 5 engines. The main journal diameter for the crankshaft of this engine was increased beginning with the 1998 model year. Mazda manufactured these engines prior to 1998 while Kia manufactured all subsequent engines. Use caution

Cylinder head bolt replacement for 1997-2003 Ford 6.8L VIN S engines.

Engine Builders: The AERA Technical Committee offers the following information regarding cylinder head bolt replacement for 1997-2003 Ford 6.8L VIN S engines. This engine requires new replacement cylinder head bolts any time the head is installed. Follow the procedure listed below after all components have been thoroughly cleaned and prepped. Ensure that all surfaces of

Improving engine balance on 1992-

Engine Builders: The AERA Technical Committee has issued the following information on improving engine balance on 1992-

Cylinder head stress plate for Caterpillar 3126 diesel engines.

Engine Builders: The AERA Technical Committee offers the following information regarding a revised cylinder head stress plate for Caterpillar 3126 diesel engines. Previously AERA published Technical Bulletin 1561 concerning a stress plate for this engine. The previously made plates covered a single cylinder and required multiple relocations of the plate to bore/hone all six cylinders.

Pinless intake valve yokes for Mack E-Tech diesel engines.

Engine Builders: The AERA Technical Committee offers the following information concerning pinless intake valve yokes for Mack E-Tech diesel engines. Beginning March 2, 2000 (engine s/n 0D0120), pinless valve yokes p/n 891gc328 were phased into production of all E-Tech engines. The pinless yokes are used for the inlet valves only. This change went into effect

Connecting rod bolt torque specifications used in various Allis Chalmers agricultural or industrial engines

Engine Builders: In an effort to clarify the confusion about connecting rod bolt torque specifications used in various Allis Chalmers agricultural or industrial engines, the AERA Technical Committee offers the following information. This information applies to both early and late style engines, as several different hardware combinations have been used in the 201, 301 and

A revised connecting rod cap screw for 1991-

Engine Builders: The AERA Technical Committee offers the following information regarding a revised connecting rod cap screw for 1991-

The lower intake manifolds on some Ford vehicle models are not fitting correctly after machining

Engine Builders: Some AERA members have reported that the lower intake manifolds on some Ford vehicle models are not fitting correctly after machining. To reduce the likelihood of coolant contamination of engine oil, a revised, thicker intake gasket is now available for the 3.8L and 4.2L Ford car and truck engines. These models have VIN

Cylinder head service for 1998-2002 Cummins 5.9L ISB/QSB engines

Engine Builders: The AERA Technical Committee offers the following information regarding cylinder head service for 1998-2002 Cummins 5.9L ISB/QSB engines, also known as "24 valve" or "4 valves per cylinder" engines (current service information is found in Bulletin 366193, revision 01 published in February 1999). Previously published service information may be incorrect due to updated

Repair Of Worn Cam Bearing Housing Bores For Detroit Diesel 11.1l And 12.7l Diesel 60 Series Engines

Engine Builders: The AERA Technical Committee offers the following information regarding the possible repair of worn cam bearing housing bores for Detroit Diesel 11.1L and 12.7L diesel 60 Series Engines. These engines use an overhead camshaft design with seven individual location precision bearing inserts. Over time, the bearing bores may become worn oversize or out-of-round,

1997-2002 GM 4.8, 5.3, 5.7 & 6.0L VIN V, T, G & U engines

Engine Builders: The AERA Technical Committee offers the following information for 1997-2002 GM 4.8, 5.3, 5.7 & 6.0L VIN V, T, G & U engines. These engines were manufactured with two different design connecting rod bolts beginning in 1999. Either design bolt, when used in pairs and properly tightened, may be used on a single

Revised cylinder head installation procedure for 1997-2002 GM 5.7L VIN G engines

Engine Builders: The AERA Technical Committee offers the following information on a revised cylinder head installation procedure for 1997-2002 GM 5.7L VIN G engines, Figure 1. This revised procedure should be used any time the cylinder heads are being installed and supersedes information found in earlier published service manuals. Previously published technical bulletin TB 1624