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IMS Pre-Qualification

How do I know my engine is a good candidate for IMS bearing replacement?


The following eleven step IMS Retrofit Pre- Qualification procedure was developed by Jake Raby at Flat 6 Innovations. During the initial development of the IMS Retrofit Procedure and components, some items of concern were noted from the very beginning. Over the years, these procedures have been updated to address these, thus increasing the effectiveness of the IMS Retrofit procedure. This procedure has been employed at Flat 6 Innovations since the very first IMS Retrofit was performed. To date it has resulted in a 100% success rate for the Flat 6 Innovations Preventative Service program. Having performed the very first IMS Retrofit and after performing more IMS Retrofits than any other facility, a perfect record has been maintained by Flat 6 Innovations by employing these procedures verbatim. Today, roughly 20% of all engines that are inspected will fail this pre- qualification, and will require repairs to be made prior to the IMS Retrofit being performed. The biggest mistake that can be made is assuming that every vehicle is healthy enough to have the IMS Retrofit performed. The second biggest mistake that can be made is not taking the pre-qualification procedure seriously. Please, pay attention to each and every engine, and realize that not every engine is a viable candidate for an IMS Retrofit.

 

Porsche IMS Retrofit and IMS Solution Pre-Qualification Procedure for IMS Bearing Replacement on Porsche Boxster and 911 Models


How do I properly bore scope my cylinders to check for bore scoring prior to changing my IMS bearing?

As part of the pre-qualification procedure, you must bore scope your cylinders. Changing the IMS bearing on an engine with existing bore scoring will compromise the replacement IMS bearing. Bore scoring will greatly shorten the life of the engine and will require overhaul, so it is not advisable to change the IMS bearing in an engine that is already in the process of failing.

Shops not familiar with the M96 engine will often bore scope cylinders through the spark plug opening. Unfortunately, this is not the correct procedure. Bore scoring in the M96 and M97 engine requires scoping cylinders from the sump. Where other shops fall short, Jake Raby shows you where scoring starts by using a technique that he developed at Flat 6 Innovations. The process will confirm the severity of cylinder bore scoring. Learn more about bore scoping your Porsche engine for cylinder bore scoring.


How do I carry out the pre-qualification ECU interrogation?

The Durametic is one of the best tools for evaluating the health of a Porsche 986, 996, or 997 engine. Jake Raby explains how to quickly go through a few important steps with this diagnostic tool to reveal the vital signs of a M96 or M97 based Porsche 911. Learn more about the Durametric Porsche Diagnostic Tool.


How do I replace my rear main seal (RMS)?

Whenever you have the flywheel removed from the engine, it's important to replace the rear main seal. If the existing seal is leaking, measuring the crankshaft for runout using the go-no-go tool should be done before any further work is carried out. It is very important to use the correct seal and install with the proper tools to prevent damage to the replacement seal and ensure leak-free operation. Learn more about Porsche Boxster, Cayman, and 911 rear main seals.



How do I inspect the dual mass flywheel to determine if it needs to be replaced?

Unlike a single mass flywheel, the factory dual mass flywheel cannot be resurfaced or reconditioned because of its dual mass. The dual mass provides critical dampening for harmonics and must be retained. A single mass flywheel is not recommended. Besides the clutch surface, spring back of the dual mass must be checked to ensure it is within factory specifications. In doubt, replace with a new Genuine Porsche or OEM LuK dual mass flywheel along with new flywheel bolts. Learn more about Porsche Boxster, Cayman, and 911 clutch kits and dual mass flywheels.


Where can I find instructions for replacing the IMS bearing with the IMS Retrofit or IMS Solution?

Instructions can be found in our Download Library. It is critical that the proper tools and products are used in carrying out the IMS Retrofit and IMS Solution procedure, including the pre-qualification procedure as outlined above. Installations that are carried out without following the prescribed pre-qualification procedure can result in less than exceptional results, so it is very important that all steps are followed as outlined.

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