Archive for the ‘Gas Engine Product News’ Category

0

Ford 4.6L/5.4L 3-Valve VVT Oil Pump Update

M360Test

Above: The standard OE pump, with an aluminum backing plate, leaks oil at 2,500 rpm compared to the JASPER pump with a cast iron backing plate. Click on the link to view the video: http://youtu.be/6QPahVJJqFw Below: The cast iron backing plate is on the left; the aluminum backing plate is on the right.

M360 Comparison

One of the primary issues with Ford’s 4.6L/5.4L 3-valve VVT engine surrounds its Variable Valve Timing system, and the lack of oil pressure which can touch off an engine code. Since the VVT is driven by oil pressure, any decrease in oil pressure, provided by the engine, can result in a failure.

To combat this issue, JASPER installs a new Melling M360 oil pump on its remanufactured unit. “At face value, the pump doesn’t look very different from the OE unit, other than the fact it is a high-volume pump,” says Randy Bauer, Gas Engine Division Manager of the Jasper, Indiana, Facility. “The biggest difference is that on a JASPER 3-valve VVT unit, the oil pump utilizes a cast iron backing plate, replacing the aluminum plate found in the OE pump.”

“With the standard OE pump, engine oil starts pouring over the top of the pump at around 2,500 rpm,” said Bauer. “This is caused by pressure buildup inside the pump, making the aluminum backing plate flex; allowing oil to flow over the top.”

“The Melling M360 pump, with the cast iron backing plate, is more rigid,” added Bauer. “The backing plate does not flex until the engine goes beyond 5,500 rpm, which is past the normal operation the engine is going to see.”

“The addition of the Melling M360 pump to our JASPER remanufactured 4.6L/5.4L 3-valve VVT engine provides many advantages to the longevity and performance of the engine,” he said.

0

Nissan VQ35DE Engine Available From JASPER

NissanEngine
Jasper Engines & Transmissions, the nation’s leading remanufacturer of drivetrain components, continues expanding into the import industry. The Nissan VQ35DE, a 3.5L DOHC V6 with variable valve timing (VVT), is available on exchange for the following applications:

  • 2002-2006 Altima
  • 2002-2008 Maxima
  • 2002-2007 Murano
  • 2003-2006 Quest

“This remanufactured JASPER engine includes all timing components with a new water pump, timing chain tensioners and new updated cam chains to correct an upper chain noise issue,” says Brad Boeglin, JASPER New Product Development Team Leader. “The pistons have been re-engineered to match original equipment compression ratios, and include a graphite coating on the skirts to prevent dry start-up and piston scuffing.”

“In addition, JASPER installs 100% new intake camshaft actuators to eliminate any VVT issues,” said Boeglin.

Every JASPER Remanufactured Engine is subjected to strict, high-quality processes:

  • Disassembly, meticulous inspection and cleaning of components.
  • Precise machining for reliable performance.
  • Head surfaces statistically monitored to assure proper sealing with the block.
  • JASPER’s research and product development ensures inherent problems in OEM design are corrected.
  • Live-Run Testing provides peace of mind and assures reliability.
  • An available Premium Service Plan that offers customers even greater value.

Each engine is covered by JASPER’s 3-Year/100,000 mile nationwide transferable parts and labor warranty. Full warranty disclosure is available on our website or upon request.

For more information on the remanufactured gas engines of Jasper Engines & Transmissions,
please call 1-800-827-7455.

0

JASPER’s Steel Torque Plate Boring Process

Customers of Jasper Engines & Transmissions are familiar with our long-standing process of torque plate honing gas engine blocks. The process ensures the proper size and shape of the cylinder after the block is bored. Through a series of updates, JASPER has taken the successful process one step further by utilizing torque plates during the boring process.

“We’re using steel torque plates in place of the traditional aluminum plates on select engine families, to improve the efficiency and effectiveness of the process,” says Alex Ernst, JASPER Gas Engine Quality Engineer. “These steel torque plates allow JASPER to bore and hone the cylinders, with the torque plates installed on the block, enabling us to achieve stricter tolerances for cylinder size and shape.”

Ernst added the honing process becomes more efficient by tightening the cylinder boring specification closer to the finished size. “This is another process that has benefited from our commitment to Continuous Improvement as we strive to provide customers with the Perfect Product,” he said.

 

0

Valve Seat Concentricity

concentrcity

When it comes to gas engine remanufacturing at Jasper Engines & Transmissions, the subject of valve seat concentricity is taken very seriously.

JASPER is moving toward seat and guide machines with a “dead pilot” design that remains stationary in the guide as the cutting head rotates around it. This design will replace machines with a “live pilot” setup that spins with the cutting head in the guide.

Concentricity, as we are discussing here, is the relation between the centers of the valve guides and the centers of the valve seat surfaces. “If two circles, one within another, share the same center, they are considered concentric,” says Randy Bauer, JASPER Gas Engine Division Manager. “The circles are non-concentric if one of the circles has a center that is not equal to the other.”

Valve seat concentricity is calculated by the variance between the two centers. “JASPER’s valve seat concentricity specification is .002 of an inch for every 1½ inches of valve seat diameter,” says Bauer. “The dead pilot setup has proven to give JASPER concentricity values into the tens of thousandths of an inch, well within our specifications.”

If the valve seats are not concentric to the valve guides, the valves will not seal effectively. “Non-concentric valves affect proper heat transfer from the valve to the valve seat and put undo stress on the valve head itself,” added Bauer. “Over time, the valve will fatigue as it tries to conform to the seat. Eventually, the valve stem will break, dropping the valve into the cylinder.”

For more information on the remanufactured gas engines of Jasper Engines & Transmissions, please call 1-800-827-7455.

0

GM Vortec 3700 Available From JASPER

gm-vortec-3700

GM Vortec 3700 available on exchange from JASPER.

Jasper Engines & Transmissions, the nation’s leader in remanufactured drivetrain products, has added
the following late-model GM engine to its remanufactured gas engine lineup.

The GM Vortec 3700 (3.7L 5-Cylinder) is available on exchange for the following vehicles:

  • 2007-2010 Hummer H3
  • 2007-08 Isuzu i-3700
  • 2007-2012 Chevy Colorado
  • 2007-2012 GMC Canyon

Every JASPER Remanufactured Engine is subjected to strict, high-quality processes:

  • Disassembly and meticulous inspection and cleaning of components.
  • Moving parts machined, or replaced, for reliable performance.
  • Head surfaces statistically monitored to assure proper sealing with the block.
  • JASPER’s research and product development works to reduce inherent problems in OEM products.
  • Live-Run Testing provides peace of mind and assures reliability.
  • Premium Service Plan offers customers even greater value.

Each engine is covered by JASPER’s 3-Year/100,000 mile nationwide transferable parts and labor
warranty. Full warranty disclosure is available on our website, or upon request. For more information on
Jasper Engines & Transmissions’ remanufactured products, please call 1-800-827-7455.

0

Ford 4.0L OHC V6… Keep Your Oil Intermediate Drive Pump

Jasper Engines & Transmissions reminds installers to retain the oil pump intermediate drive from their Ford 4.0L OHC V6. This part is not supplied with a JASPER remanufactured engine.

“There have been occasions where JASPER received a core and found the oil pump intermediate drive left in the block,” says Randy Bauer, JASPER Gas Division Manager. “It is vital that the part be swapped over from the core engine, or replaced with a new one, or else the replacement engine will immediately fail due to lack of oil pressure.”

The Ford 4.0L OHC V6 oil pump is driven by the intermediate drive through a hex-shaped shaft coming from the pump located in the back valley of the engine. The intermediate drive is turned by a slant-cut gear that fits into a gear on the jackshaft which is turned by a timing chain.

There also have been instances where the intermediate shaft cannot easily be removed from the core. “The slant-cut gear of the intermediate shaft can hang on the jackshaft gear,” says Bauer. “The rotating assembly may have to be moved just enough to allow slack in-between the two gears, and easier removal of the intermediate shaft.”

For more information on the remanufactured gas engines of Jasper Engines & Transmissions, please call 1-800-827-7455.

0

JASPER Uses Automated Data Acquisition in Gas Engine Live-Run Testing

data-acquistion-live-run

Jasper Engines & Transmissions, the nation’s leader in remanufactured drivetrain products, has incorporated automated data acquisition into its gas engine live-run testing program.

The test stands at the Jasper, Indiana, facility are being fitted with computers running a JASPER-written automated test program (using software from National Instruments). Over time, this conversion will occur on live-run test stands at the Crawford County and Willow Springs, Missouri, facilities.

While computer-assisted programs have been used to monitor live-run testing in the past, it was the role of the operator to check the gauges and write down the correct numbers. But the operators are expected to test a predetermined number of engines each day. “The operator prepares one engine for testing while another is being tested on the stand,” says Jacob Adams, JASPER Corporate Engineer. “This can lead to missing that critical engine temperature (145 degrees Fahrenheit) where we need to get our measurements. It only takes a couple degrees for the values to drastically change.”

Once the operator has the test stand ready, the engine is started and run at 1,400 rpm. From the moment the engine starts, the automated data acquisition system monitors critical readings and takes a data snapshot once engine temperature reaches 145 degrees. This can be from as little as five minutes for small 4-cylinder engines, to as-long-as 15 minutes for big-block V8s. “The data acquisition program collects readings on oil temperature, oil pressure, water temperature, vacuum and correct rpm range,” says Adams. “Once the live-run test is complete, the engine is shut down and the system can acquire compression data.”

The automated data acquisition program can shut down an engine during a test should readings exceed pre-determined parameters. “The system is always watching the temperatures and pressures,” says Adams. “So if it sees a spike in water temperature, or a loss of oil pressure, it immediately shuts down the engine, reducing potential damage. The program will also alert the operator as to the reason for the engine shutdown.”

The automated program gives JASPER a good standardization process to all of the live-run test stands. “In the past, using the manual gauges, we could not obtain repeatable results from different gauges on different stands, added Adams. “Borderline engines that would pass live-run testing are now being rejected on the stand, thereby reducing the chance of a customer warranty issue.”

For more information on the remanufactured gas engines of Jasper Engines & Transmissions, please call 1-800-827-7455.

0

JASPER Adds GM Vortec 2900 to its Remanufactured Lineup

gm-29l

Jasper Engines & Transmissions, the nation’s leader in remanufactured drivetrain products, has added the following late-model GM engine to its remanufactured gas engine line-up.

The GM Vortec 2900 (2.9L 4-Cylinder) is available on exchange for the following vehicles:

  • 2007-2011 Chevy Colorado
  • 2007-2011 GMC Canyon
  • 2007-2009 Isuzu i-290

“This engine will include a new variable valve timing (VVT) actuator gear, a qualified or new crankshaft balancer and graphite-coated pistons,” says Chip Helderman of JASPER’s New Product Development Department.

Every JASPER Remanufactured Engine is subjected to strict, high-quality processes:

  • Disassembly, meticulous inspection and cleaning of components.
  • Moving parts machined or replaced for reliable performance.
  • Head surfaces statistically monitored to assure proper sealing with the block.
  • JASPER’s research and product development ensures inherent problems in OEM design are corrected.
  • Live-Run Testing provides peace of mind and assures reliability.
  • An available Premium Service Plan that offers customers even greater value.

Each engine is covered by JASPER’s 3-Year/100,000 mile nationwide transferable parts and labor warranty. Full warranty disclosure is available on our website or upon request.

For more information on the remanufactured products of Jasper Engines & Transmissions, please call  1-800-827-7455.

2

A Pontiac Split Head Six Gets “Authentic”

pontiac-split-61

The Pontiac Split Head six produced 60 horsepower in 1929, up from 40 horsepower in earlier versions. The customer asked for the red paint job on his engine.

Diving deeper into automotive history, the Engine Department of Jasper Authentic Custom Drivetrains recently remanufactured a 1929 Pontiac 200 cubic-inch “Split Head” six cylinder engine. These engines were built between 1926 and 1932, when Pontiac was a branch-off of the old Oakland Motor Car company.

The Split Head had a one-piece cast iron block with three main bearings. Its most unusual feature was the use of two separate cylinder heads, covering three cylinders apiece. The ignition distributor was mounted on top of the block, in the gap between the heads.

Pre-1929 versions of the Split Head were 186 cubic inches; rated at 40 horsepower. For 1929 and later models, the engine displaced 200 cubic inches, producing 60 horsepower.

Obviously, this early drivetrain component is no longer offered, nor does it fit into any production remanufacturing system. That’s where Jasper Authentic Custom Drivetrains comes in.

“One type of client that would benefit from our division, for instance, is the individual restoring a car that’s all-original,” says Alex Ernst, Jasper Authentic Group Leader. “They want the serial numbers to match, or they want their engine to be hand-built by experienced professionals”.

“With Jasper Authentic Custom Drivetrains, we spend extra time remanufacturing an engine or transmission,” Ernst added. “We give the customer that hands-on, hand-built treatment that our target customer base is looking for.”

In addition, Jasper Authentic Custom Drivetrains provides some extras for the enthusiast. “Customers can opt to have their engine dynamometer tested, in addition to the live-run test we perform on most applications,” said Ernst. “And we can provide the customer with documentation of the remanufacturing process.”

For more information on the Jasper Authentic Custom Drivetrain division, call 1-800-827-7455.

0

Cam Bore Alignment Station Reclaims Ford Modular Heads

Jasper Engines & Transmissions has implemented an operation to remanufacture Ford modular cylinder heads with overhead cams.

An overhead cam bore alignment station has been put in place in the Gas Engine Division of the Jasper, Indiana, facility. At the heart of this station is a Milltronics 7200 CNC machine that centers the head for proper cam bore alignment. The CNC machine takes less time to do the procedure, with improved accuracy, when compared to a manually-operated drawbar boring setup.

Currently, the station’s main focus is the Ford 4.6, 5.4 and 6.8L modular engines with aluminum overhead cam cylinder heads. The station gives JASPER the ability to remanufacture these heads that in the past would not be salvageable.

“The camshaft journals ride in the aluminum bore of the head, and not on an actual bearing,” says Lukas Hetterscheidt, JASPER Gas Engine Quality Control Captain. “Any dirt or debris that gets in between the cam and the head tends to tear up the cam bores and the camshaft itself.”

JASPER’s Indiana Tool & Die Division has the capability to weld up the steel of the camshaft journals to .030 oversize. Meanwhile, heads are taken to the cam bore alignment station where they are align bored to accept the remanufactured camshaft. “It doesn’t have to be the same cam that originally came with the head, but the bore and the journals have to match in size,” says Hetterscheidt. “So if you have a .030 cam, the head must be align bored .030. In some instances, the head is align bored .080 over, and a bearing is inserted so a stock camshaft can be used.”

“Anything that was in poor condition would, in the past, be discarded, and we would run out of core heads or core cams,” added Hetterscheidt. “Now we can save both the cam and the heads. We are always keeping our eyes open for ways to reclaim components, maintaining the highest quality standards and producing the greatest value for our customer.”

In the future, JASPER plans to utilize the cam bore alignment station on 3.7 and 4.7L Chrysler cylinder heads. Hetterscheidt added that similar stations could be implemented in other JASPER facilities where overhead cam engines are remanufactured.

For more information on the remanufactured gas engines of Jasper Engines & Transmissions, please call 1-800-827-7455.