Engine Builder Tech Center
Ford 351W With Excessive Oil Consumption

The 351 Windsor will have oil consumption problems if it’s installed in an Econoline van without the right intake gasket. The bottom of the intake manifold was too hot, even with the metal heat shield riveted to the bottom of the intake, so Ford left off the shield and used a special “bathtub” intake gasket

Ford 351 Windsor Cylinder Heads With Missing T.E. Passages

Engine builders have reported seeing some E7TE head castings for the Ford 351W that weren’t drilled for the thermactor emissions (T.E., or A.I.R.) passages. It turns out that Ford plumbed the T.E. directly to the exhaust manifolds for some of the truck and van applications from 1990 through ’97, so some of the heads don’t

Chrysler 318/360 Blocks Cracked Around The Head Bolt Holes

Some thread repairs don’t work because they can’t take the torque required for a head bolt, and others leak coolant through the insert itself if you do try to use them. Some engine builders “vee” out the cracks, weld them up, and deck the block, but that’s a time-consuming process that doesn’t always work out

Chevy 3.1L/191 Cam Bearing Bores

Some of the later roller cam 3.1L blocks for the ’93-’94 Chevy VIN M are showing up with oversize cam bearing bores that appear to have been caused by spun cam bearings. If a new cam bearing is installed in a bore that has been damaged, it will spin in the block, cut off the

Buick 3800 VIN K Cam Problems

Some of the 1995-’99 Buick 3800 VIN K cores are showing up with the keyway in the snout of the cam all wallowed out. When this happens, the cam gear rotates back and forth on the snout which not only ruins the cam, but also changes the valve timing and leads to abnormal combustion. We

Buick 3800 VIN K Rear Seal Holder

The rear seal holder for the 1995 and up Buick 3800 VIN K also functions as the cover for the coolant passages and oil galleries on the back of the block. This can cause problems, because the coolant passages are pretty close to the oil passages, and the original covers (c/n 24503969) tend to corrode

EngINtel: A Stack of Gifts Almost as Satisfying as Chestnuts Roasting on an Open Fire

At this time of year, let me be the first one to to give you a gift – and it’s one you’ll  likely use again and again. Many of you may have not seen this issue, but once it bites you, you will always remember the Nissan KA24 engine series in the SOHC configuration. So

Oil Drain Intervals

One of the great debates in automotive service is oil drain intervals. The correct oil change interval is the one prescribed by the engine manufacturer that can be found in a vehicle owner’s manual. Oil drain interval is determined by the engine type, drive train, vehicle type and expected use. Each OEM tests its own

Shop Solutions: November 2007

Solution for Pre-mature Camshaft Failure on Big Block Chevy Engines ≈Big Block Chevrolet engines are well known for being subject to premature camshaft lobe wear and failure. Here are ways to help relieve this problem. When replacing a hydraulic camshaft, instead of using the OE type of lifter (p/n 817 or VL37) use p/n 2095

Engine Builder Shop Solutions, October 2007

Intake Manifold Cleaning Caution – Ford 4.6L VIN ‘W’ Engines (1991-’98) If piston failure occurs in this engine, it is possible for broken pieces of piston to end up in the intake plenum. This is due to the design of the engine, which has tuned runners with the plenum located below the runners. The piston

Tech Notes

Engine Builders: One of the great debates in automotive service is oil drain intervals. The correct oil change interval is the one prescribed by the engine manufacturer that can be found in a vehicle owner’s manual. Oil drain interval is determined by the engine type, drive train, vehicle type and expected use. Each OEM tests

Tech Notes

Engine Builders: It is generally known by automotive technicians that motor oil is a necessity; but how many of those techs know what it actually is? Differences in formulations, even within the same brand, can be as broad as the motor oil type, or as specific as the additive package used. In order to help