Revised Timing Belt Tensioner for Acura 3.2L Engine
A revised timing belt auto-tensioner for 2002-2003 Acura 3.2L engines is now available (P/N 14520-P8E-A01). This tensioner is part of a product improvement by Acura. The original design timing belt tensioner is filled with oil to dampen oscillation. Due to a manufacturing situation, the tensioner oil can leak. If enough oil is lost, the timing
Toyota V8 UZ Engine Timing Belt Issues
When I first started researching this article, I called and stopped by several shops that do work on Toyota vehicles. I asked if any of them had any V8 models coming in for timing belts so I could get some pictures of the process. Either a blank stare, or a question like: “What Toyota V8?”
Toyota V8?UZ Engine Timing Belt Issues
I asked if any of them had any V8 models coming in for timing belts so I could get some pictures of the process. Either a blank stare, or a question like: “What Toyota V8?” was the general response. The idea that there was a Toyota V8 needing a timing belt replacement seems to be
Timing Chain Tensioner Installation Caution on GM 2.3L Quad 4
The timing chain tensioner on GM’s 2.3L "Quad 4" engine is of the spring loaded ratchet design. The tensioner assembly consists of a housing, spring, and ratcheting plunger. The plunger is locked into the housing and plunger to prevent the accidental release of the spring before or during installation. Once the tensioner is installed and
Cam Drives and Timing Components
Cam timing plays a huge role in an engine’s power curve. Advancing cam timing shifts the power curve more toward the lower rpm range, while retarding it moves the power curve higher up the rpm scale. If an engine is being built for a particular application (stock, street/strip, drag race, circle track, you-name-it), how the
Caution When Press Fitting Aluminum Timing Gears
When timing gears are subjected to extreme temperatures, the aluminum gears do not return to their original dimensions after cooling. The result is a loose fit between the gears and camshaft. Under no circumstances should aluminum gears be heated with a torch. –Tech Tip courtesy of Hastings Manufacturing
Front Timing Cover Oil Leak Reported on Toyota 1GR-FE Engine
Some 2003 – 2007 model year 4Runner, FJ Cruiser vehicles with 1GR-FE engines maydisplay evidence of a small oil leak located where the Bank 1 cylinderhead, engine block, and timing cover meet. Use the following repairprocedure to address this condition. Note: Affects 2003 – 2007 model year 4Runner vehicles equipped withthe 1GR-FE engine produced BEFORE
Timing Chain Service on Ford 3.0L Duratec Engines
You will have to use a dial indicator tofind the TDC position of the number one cylinder on Ford’s 3.0L Duratec to make sure the crankand camshafts are all properly aligned. Ford says that when the crankshaft keyway is positioned at roughlythe 11 o’clock position, the number one cylinder should be at TDC. Before you
Variable Valve Timing Noise Complaints When Starting Mazda MZR Engine
Affected Models with MZR engine 2007 Mazdaspeed3 vehicles produced before April 1, 2007 2006-2007 Mazdaspeed6 vehicles produced before April 1, 2007 2007 Mazda CX-7 vehicles produced before April 1, 2007 Description When the engine is first started, some vehicles may exhibit a loud ticking noise from the variable valve timing (VVT). This is caused by
Timing Chains, Sprockets and Gears
Look back at the events in your life an examine how timing has played a part in the outcome. When you showed up at party and met the girl who would eventually become your wife? When you stayed late at work and missed the 18-car pile up on the interstate? Even without realizing it, your
GM 2.2L Ecotec Timing Chain Service
Prior edition service manuals refer to the timing chain index links being colored “silver” and “copper.” With the implementation of the newer chain and oiler assembly, the index link colors have changed. In order to avoid confusion, the service procedure has been modified to refer to the index links as two common colored and one
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
Valve Timing Basics
Although we can not explain cam design in such a small space, we might be able to clear up some of the most misunderstood terms and make clearer what actually happens as the engine goes through its four-stroke cycle. We will illustrate the relationship between all parts of the engine and try to help you
Time for Chains: Stock and Performance Timing Sets
Timing chains and gears are engine parts that are usually replaced when an engine is rebuilt. Over time, gear teeth wear and chains stretch. This can cause noise, retarded valve timing (and ignition timing if the engine also has a cam-driven distributor), and a noticeable loss of performance and fuel economy. A new timing chain,
Variable Valve Timing
With all the scientific technology computing power out there in the world today I have yet to hear an answer to the age old question: What came first, the chicken or the egg? Well the automotive industry has a similar dilemma that continues to plague its existence. Which is more desirable, large displacement and horsepower
BorgWarner Expands Timing System Business in India with Buy-out of Joint Venture
With its engine timing system sales in India expected to show stronggrowth in the future, BorgWarner Morse TEC has bought-out its jointventure with Murugappa Group’s Tube Investments of India (TII) locatedin Chennai, India. In 2001, BorgWarner Morse TEC partnered with TII tomanufacture silent chains for the Indian automotive and two-wheelermarkets, producing more than 4 million
Revised Timing Belt and Tensioner Setup Procedure Ford 2.0L Engines
To achieve proper timing belt tension, the camshaft sprocket bolts should be loosened enough to permit the sprockets to turn freely on the camshafts. With cam sprocket bolts loosened and cylinder #1 at TDC, crankshaft must be rotated to TDC in clockwise direction (install camshaft alignment tool in th camshaft slots). 5) Tighten the attaching
Special Timing Chain and Belt Tools
Before you replace a timing belt, chain or gear set on some engines, you will have to look up the timing reference marks. Some engines have multiple timing marks that can cause confusion if you don’t know which ones to use or how to line them up. Many engines also require special tools when changing
Timing Chains & Gears
As a rule, most pushrod engines use a timing chain to drive the camshaft, though some older four and six cylinder engines use a gear set. A short chain or gear set works well in this kind of application because the camshaft is located in the block just above the crankshaft. In overhead cam (OHC)