GM Northstar 4.6L V8 Engine
Initially rated at 295 horsepower, the Northstar V8 has grown over the years to an incredible 469 hp at 6,400 rpm (STS-V Supercharged Northstar engine). In 1995, the engine was ranked as one of the “10 Best Engines in North America” by Ward’s Auto World. It repeated the honor in 1996 and 1997, but it
Porsche Boxter M96 Crankshaft Bearing Housing Update
Upon inspection of complete engines replaced under Porsche factorywarranty, it has been determined that they are being replacedunnecessarily because of the above-mentioned engine noises. The noiseis caused by the crankshaft bearing housing. As of March 29,2005, a crankshaft bearing housing with thrust blocksmade of nodular cast iron is installed on all 2.7L engines from modelyear
Upper Timing Chain Noise on Volkswagen VR6 Engines
Tohelp silence the problem, try bleeding the tensioner. Start by removingthe tensioner from the engine. Next, submerge the tensioner in oil.(Make sure the oil feed hole is facing upwards.) Then, use a large pairof non-marring pliers to actuate the piston several times until no airis noticed escaping the bleed hole. Finally, install the tensionerimmediately by
Isuzu Crank Identification Knowledge Pays Off In Real World Situation
Back in January of 2007 I did an article about the differences ofthe 1992-2004 3.2L Isuzu components and in particular the differentcrankshafts.I also remarked that the 3.5L crankshaft is identical in appearance anddimensions and that only the stroke is what made it different. One part of that article worth discussing again is the method ofidentifying
New Camshaft Microfinishing and DLC Application Services for U.S. Market
Bekaert Diamond-Like Coatings recently installed a high energy centrifugal barrel micro-polishing machine for camshaft polishing. The machine will enable Bekaert to give camshafts the ideal pre-coating treatment, to ensure optimal smoothness of the surface before applying the black DLC coatings. Additionally, Bekaert will also service customers who are not looking to apply DLC coatings, but
Correcting Engine Block Pitting on 4-cylinder Saab Engines
This bulletin applies to all Saab models with 4-cylinder engines (9-3,900 and 9000). Under certain conditions, the upper engine block surfacemay become eroded from prolonged leakage of the head gasket. Theerosion appears as a pitting of the block surface around the coolantpassages. The Repair: The eroded portion of the block surface can be built up
Outer Exhaust Manifold Studs Breaking on 1991-1999 Jeep 2.5L engines
Inspect either manifold stud for breakage, if breakage is noted, perform the repair procedure outlined below. Models Affected: 1996 – 1999 (AN) Dakota 1991 – 1992 (MJ) Comanche 1997 – 1999 (TJ) Wrangler 1991 – 1999 (XJ) Cherokee 1991 – 1995 (YJ) Wrangler NOTE: This information applies to Jeep vehicles equipped with a 2.5L engine.
Combustion Chamber Mold Making Process For Custom Pistons
The following molds are examples of chamber molds NOT accepted by JE Pistons. Different resin based materials are available, but be careful as they may readily bond with metal surfaces and can be difficult to separate once cured. There are two common
Not Those Jeeps Again! The Facts About 4.0L Cylinder Heads
Back in the April 2003 issue of Engine Builder information was provided about the proliferation that occurred on the engine blocksof 4.0L Jeeps starting in 1996 and continuing though the present.Sound familiar? Well, you may remember the reference made to Popeye andhis "Jeep" friends. The 4.0L came on the scene in 1987 and is still
Revised Isuzu Intake Manifold to Cylinder Head Bolt Torque Specifications
The following information has been revised in the engine section of Isuzu’s service manual. Use the torque chart below when installing the intake manifold to the cylinder head. Torque the intake manifold to cylinder head bolts to 13 ft.lbs. (18 Nm). Some or all of this information was provided by the AutomotiveParts Remanufacturers Association
Reduced Power Complaints On Some BMW Engines Equipped with VANOS
AFFECTED MODELS/ENGINES E82 and E88 (1 Series) with N51, N52K and N54 engines produced from 1/2008 E90 and E91 (3 Series) with N52 engine produced from 3/2005 through 6/ 2006 E90, E91, E92 and E93 (3 Series) with N51, N52K and N54 engines produced from 7/2006 E85 and E86 (Z4) with N52 engine produced from
Coolant Leak from Intake Manifold Water Outlet on Nissan VG33E Engine
Applicable vehicles: all 2000-’02 Frontier (D22) with a VG33E engine; and all 2000-’02 Xterra (WD22) with a VG33E engine. Condition: • Engine coolant under the vehicle when parked; or • Smell of coolant when the engine is warm.