Wayne’s second book, which took more than two years to complete, describes the difficulties involved in rebuilding the 911 engine. This book challenges the idea that rebuilding a 911 engine requires a master’s degree from the Porsche factory and is written with both the novice and skilled rebuilder in mind. This book promises to reveal never-before-published insider information that is only known by people who specialize in rebuilding Porsche engines.
Having a different person rebuild your engine? You will have all the knowledge you need to ask your mechanic before you pay him to restore your priceless 911 engine after reading this book. With the aid of this book, you will be able to distinguish between the real specialists and the impostors, allowing you to avoid paying thousands of dollars for a subpar engine rebuild.
You will find all the knowledge you need in the 240-page book to finish the reconstruction yourself. A substantial chapter on performance improvements is also included, covering everything from the relatively simple job of regrinding your camshafts to the installation of a computer-controlled engine management system. There are the following sections in the book:
- When Should You Rebuild?
- Engine disassembly
- Work in the machine shop or reconditioning
- Performance Enhancements
- Engine rebuilding
- Break-in Techniques
- Engine Details and Tolerances
- Parts Schematics (1965-89)
Here is an early look at a few of the pages from “911 Engine Rebuild.” All images and graphics are detailed in full color, and the book is designed to be easily read.
In This Article...
Overview
Unpublished data explains the specifics of completing this difficult assignment! From dismantling the engine to reconditioning and blueprinting to final reinstallation and break-in, Dempsey walks you through the problems that even the most skilled mechanics frequently encounter. Contains accurate details on how to swap out parts, improve performance, increase dependability, tear down, and avoid potential issues. Information that is crucial for both DIYers and anyone wishing to hire a professional.
Wayne R. Dempsey
Knowledgeable author:
101 Projects for Your Porsche 911, How to Rebuild and Modify Porsche 911 Engines, and 101 Projects for Your Porsche Boxster, all published by Motorbooks, are written by Wayne R. Dempsey. Southern California is where Dempsey calls home.
What was the 911 engine modified by Porsche?
The largest update to the Porsche 911’s flat-six lineup occurred in 1998 when Zuffenhausen converted to water-cooling and added a new 3.4-liter engine for the Carrera, known as the M96.
Who produces the Porsche engines?
Located at the Porsche Experience Center in Carson, California, just south of downtown Los Angeles, PMNA is a fully owned subsidiary of Porsche A.G. In addition to selling and maintaining customers’ racing vehicles, PMNA also constructs and rebuilds race engines for various Porsche vehicles. It will soon start producing Singer engines, but not the four-valve engine that Williams Advanced Engineering and I co-developed for the crazy DLS. Nicholson McLaren, a UK builder, will continue to make that.
1/10/22 2:30 PM Update: Of the original version of this article, Williams Advanced Engineering was credited with building the engine in Singer’s DLS. The engine is made by Nicholson McLaren but was designed with Williams.
Porsche produces their own engines, right?
The Porsche Motorsport North America headquarters, housed within the Porsche Experience Centre in Los Angeles, will be where all engines are put together.
Taking a broader view, we can see that Porsche does not act in this way without cause. It is aware of how this will be interpreted. Be prepared for this to be the start of a tentative series of future cooperation between the two businesses…
A new Porsche engine can be purchased.
You can get a refurbished or remanufactured Porsche 911 engine if you want one with no mileage on it. Used engines can also be found for sale. They are refurbished yet offered for sale with accumulated miles.
What does Porsche’s 911 stand for?
Porsche came up with the idea to add gold letters spelling out the car’s name to the dashboard and the back of the vehicle. Since these letters were already made, they already had the “9” and the “1,” so they simply swapped out the “0” for another “1,” and the name 911 was born.
Which Porsche 911 generation is the best?
Because it is the newest and best 911, the Porsche 992 ranks in the top 3. It has many advantages, but only time will tell if it becomes a classic like the vehicles mentioned above. There are numerous models and two transmissions—a 7-speed manual transmission and an 8-speed PDK dual clutch transmission—to choose from (yes thats right, 7). The non-turbo engines have a horsepower range of 380 to 450, but if you choose a turbocharged engine, that range can increase to 641 horsepower.
What is so unique about a Porsche 911?
Behind the rear axle is where the engine is located. The Porsche 911 provides a driving experience that is unmatched by any other vehicle because to the placement of its own engine behind the rear axle. A experienced 911 pilot can drop power earlier in a turn than they would be able to fly any other configuration thanks to the weight distribution that results.
Why do Porsche engines perform so well?
The air-cooled flat engine is the best option for sports cars since it is flat, lightweight, and allows for exceptionally low designs because the cylinders are lying flat. Because of the lowered center of gravity, it is possible to drive in a sportier, more dynamic manner throughout the entire driving maneuver. Because the flat engine’s weight sits on the drive axle when mounted at the back, as it is in Porsche cars, traction is enhanced. Drivers of Beetle and Porsche concurred that a car with a rear-mounted engine was by far the greatest option for winter driving conditions prior to the advent of all-wheel drive automobiles. The contrary is also true: A rear-mounted engine’s weight enables more braking force to be applied to the rear wheels during braking.
The flat engine, especially the six-cylinder version, is exceptionally smooth to operate and has no free moments or forces. Because of the perfect balance of the crank mechanism, short-stroke sports engines may travel at high speeds without experiencing undue strain.
The Porsche six-cylinder flat engines’ tendency to use less fuel as engine power rises is one of their most distinguishing characteristics. The flat engine’s design idea is around a consistent lightweight build, a low center of gravity, exceptional revving prowess, and a high specific output due to favourable charge cycles. All 911 engines must be both sporty and practical for daily use.
In general, a flat engine requires more work to produce than an in-line engine since it requires more parts. Two banks of cylinders, a valve train, cooling, and/or injection are required for the flat engine. Because the individual cylinders of a flat engine are spaced far away from one another, they can benefit from a direct flow of cooling air, making this engine a particularly strong option for air cooling. The four-valve technique is principally responsible for the 911 flat engines being water-cooled since the 996 model series. To reduce fuel consumption and exhaust pollutants while also improving performance, four valves are necessary.
But only lovers of water-cooled flat engines will find this interesting. There isn’t a club by that name yet, but when these engines stop being the newest technology and enter the annals of history, there will undoubtedly be one.
Which used Porsche 911 is the best?
I would suggest either a 911 from the 997 or 991 generations if you’re searching for the greatest secondhand 911 to buy. Porsche identifies the generations of the 911 with three-digit numbers. Production of the 997, which debuted in 2004, continued until the launch of the 991 in 2011.
The 997 is less problematic than the 996 of the previous generation, and it also has much better and more contemporary body style. Because they are older, 997s are usually more reasonable than 991s, though some fantastic deals can be obtained on low mileage models.
The 911’s 991 generation, which debuted in 2011, was produced through the end of 2019. These are renowned to be incredibly dependable and contain the majority of the newest technology. Additionally, the 911s came with a naturally aspirated engine only during this generation. They switched to all-turbo engines in 2020 with the launch of the 992 generation.
Does Porsche use VW motors?
My Porsche has a Volkswagen engine—who installed it? It shouldn’t surprise anyone that Porsche provides its base Macan crossover with a turbocharged 2.0-liter inline-four from VW/Audi since the question is as old as the company itself.
Why is the 911 Porsche so quick?
Thoroughbred Italian supercars, as we all know, depreciate more quickly than anything else, but the German Porsche 911 is a completely other story. When compared to luxury vehicles, which can lose over 50% of their worth in three years, the Porsche 911 only loses 23.62 percent of its value in three years, according to Motor and Wheels. The 996-generation 911 Turbo, which sells for anywhere between $100,000 and $500,000 on the used car market, is a fantastic example to show this. If you plan to keep your 911 Turbo for the next 20 years, you are nearly guaranteed to make money on your car.
Specs for the 2022 Porsche 911 Turbo S:
What Porsche engine is the largest?
The Porsche flat-six engine series is a line of mechanically comparable flat-sixboxer engines that have been produced by Porsche since 1963 for almost 60 years without interruption. The flat-fourboxer utilized in the first Volkswagen Beetle has been evolved into the current engine.
The 911 model, Porsche’s flagship rear-engined sports car that has only employed flat-six engines since 1963, is most frequently associated with the flat-six engine. Up until 1999, when Porsche began using water-cooled engines, the engines were air-cooled.
Porsche unveiled the third iteration of the 997 GT3 RS in April 2011 with a larger 4.0-liter engine that produces 500 PS (368 kW; 493 hp). With their 911 (997) GT3 RS 4.0, which debuted in 2011, they debuted the naturally aspirated 4.0-liter flat-six engine, the largest engine available in a street-legal 911. The engine itself makes use of an RSR crankshaft with larger stroke specifications (from 76.4 mm to 80.4 mm). A power-to-weight ratio of 365 horsepower per ton was achieved thanks to this modification, which increased the output to 500 PS (368 kW; 493 hp) at 8,250 rpm and 460 Nm (339 lbft) of torque at 5,750 rpm. There were just 600 automobiles made. The engine’s 493 horsepower (368 kW) and 123.25 horsepower (92 kW) per liter output make it one of the most potent six-cylinder naturally aspirated engines in a production vehicle.
The 1970–1972 Porsche 914/6 (mid-engine), the 1986–1993 Porsche 959 (rear-engine), and the 1996–2021 Porsche Boxster/Cayman are further Porsche models powered by flat–six engines (mid-engine).
How long are Porsche 911’s good for?
Yes, they are constructed to function, but they are built to function for a very long time. The lifespan of a Porsche 911 engine is rated at 100,000 kilometers and 10 years. Porsche 911s, like any other vehicle, live longer with good, regular maintenance and care. The majority of Porsche vehicles have a lifespan of at least 150,000 miles.
What Porsche engine is the best?
- Porsche 997 GT3 RS 4.0, M97/74.
- Porsche 911 Carrera 2.7 RS, model 911/83.
- 3. Porsche 993 Carrera, M64/21.
- 4) Porsche 996 GT3 Mk1 (M96/79).
- 5) Porsche 901/01, a 1964 model.
- 6) Porsche 991 Turbo (ref. 9A1)
When did Porsche experience engine issues?
The dreaded intermediate shaft (IMS) bearing failure is the most noticeable and well-publicized problem you’ll encounter on the used market. An IMS bearing failure can result in a loss of the engine timing, which would completely destroy the engine. A Porsche engine replacement is not inexpensive, as you might expect.
The M96 and M97 flat six-cylinder engines used in 911s, Boxsters, and Caymans between 1997 and 2008 frequently experience IMS bearing failure.
However, the 996-era Porsche 911s and 986 Boxsters experienced the most significant IMS bearing issues up to 2006. Despite the significantly lower IMS bearing failure rate in the later year samples, it is still feasible.
Before buying a car, it’s crucial to check the VIN and service records. It is best to budget for an urgent replacement of the IMS bearing if you locate a car in this time frame that you are interested in purchasing. It might cost up to $2,500 to have an IMS bearing replaced by a skilled mechanic.
The cost of replacing an engine, though, can be more than triple that. As a result, it is imperative to replace the bearing before anything else.
You would be hard-pressed to identify any significant failure areas of Porsche flat engines if the age of IMS bearing problems were excluded. Given their great performance, Porsche engines are known to be remarkably durable whether they are new or old.
Some more recent models hardly ever have “bore score,” which is the engine cylinder walls scraping together as a result of inadequate lubrication.
However, if a Porsche has been well maintained, you won’t likely encounter any significant problems.