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Buy this item to receive a Do-It-Yourself Supercharger Rebuild Service Kit. This is not a listing for a complete supercharger. This item is a core buyout. No core exchange.
This item includes ready-to-install, timed, coated Eaton M112 Gen4 Rotor Assembly for use with OEM and aftermarket supercharger kits. This item is a re-manufactured Eaton M112 Gen4 Rotor Assembly and comes with a Service Parts Kit including the Nosedrive Rebuild Service Kit and a pair of rotor needle bearings for you to install in the housing.
What are the most common vehicle applications this item will fit?
These Eaton M112 Gen4 Superchargers are most often found on Jaguar 4.0L V8 XJR XKR Silverstone AJ26S AJ27S engines fitted with an OEM Supercharger Kit or Custom Eaton M112 Gen4 Supercharger Kits.
Will this fit the vehicle application of the supercharger being serviced?
This kit is applicable for Eaton M112 Gen4 superchargers used in Jaguar AJ-V8 engine vehicle applications. For complete list of compatible vehicles see compatibility chart. Please contact us if you need help to make sure your supercharger is this kind. We have friendly, helpful technical staff available by email or phone to answer the questions you have. Just ask.
According to Wikipedia:
Jaguar_AJ-V8_engine
4.0 L
The 4.0 L (3996 cc) AJ26 engine was introduced in 1996. The number \"26\" comes from 12+6+8 (cylinders), because when the first ideas were sketched, a family of 6-, 8- and 12-cylinder engines was contemplated, although only the 8-cylinder version was produced. It has a square 86 mm (3.4 in) bore and stroke. It was updated in 1998 as the AJ27 with continuously variable valve timing. The AJ-V8 was updated again in 2000 as the AJ28. The naturally aspirated version produces 290 hp (216 kW) in the 2000-2002 XK8.
Vehicles using this engine:
AJ26
1997-1998 Jaguar XJ8
1997-1998 Jaguar XK8
1997-1998 Daimler V8
AJ27
1999-2003 Jaguar XJ8
1999-2003 Jaguar XK8
1999-2003 Daimler V8
AJ28
2000-2002 Jaguar S-Type 281 hp (210 kW), 287 lb⋅ft (389 N⋅m)
Supercharged
The supercharged version of the AJ26 is used in the high-performance R versions of Jaguar\'s cars. The engine was updated with AJ27 specifications for 2000. It produces 375 hp (280 kW) and 387 lb⋅ft (525 N⋅m) with the help of an Eaton supercharger (modified Roots-blower). The supercharged engine did not use variable cam timing as the normal benefits of improved volumetric efficiency are not noticeable on a boosted engine
Vehicles using the supercharged version include:
AJ26S
1998-1999 Jaguar XJR
1998-1999 Jaguar XKR
1998-1999 Daimler Super V8
AJ27S
2000-2003 Jaguar XJR
2000-2003 Jaguar XKR
2000-2003 Daimler Super V8
These superchargers are in high demand. Not necessarily easy to come by. With this in mind, our Shop Foreman designed this kit to put a supercharger you already own back into service, with much of the work performed by you or your mechanic, to help with cost and turnaround time savings. This kit is especially great for automotive repair shops where the mechanic can keep the cost and turnaround time down by completing the less difficult work in his repair facility.
This item is a do-it-yourself complete rebuild kit with a pre-built and timed rotor assembly. It is ready to install into your supercharger housing by you or your mechanic. It comes with a parts kit to rebuild the Eaton Nosedrive Snout. Also included is a pair of rotor shaft needle bearings that are quality controlled checked and ready for installation by you or your mechanic into the supercharger housing.
Or...
To have a supercharger completely serviced by us, you send your core in for the rebuild. We have a Complete Rebuild Service which you can send your supercharger in to have performed a Complete Supercharger Rebuild Service Eaton M112 Gen4 with durable Thermal Barrier Rotor Coating.
Our do-it-yourself Complete Supercharger Rotor Assembly kit saves you several hundred Dollars, or gives a fantastic potential profit margin for an automotive repair shop.
This item is a rotor assembly that has been newly re-manufactured with the rotors newly re-coated and precision-timed. Currently, it comes with a Complete Rebuild Parts Kit that includes all the parts needed for the complete service of the supercharger.
Buy this item because the rotor assembly is already professionally re-manufactured for you. Our rotor assembly bearings are retained by an Aluminum plate designed and CNC manufactured specifically for this application. This is the only method of bearing retention we trust for our supercharger rebuilding services. Now, you can use this professional, reliable method to completely rebuild your Eaton supercharger yourself, saving you time and money. NO ALUMINUM WELDING REQUIRED. A U.S. Patent has been applied for to protect this bearing retention process from unauthorized use by anyone but the designer of the process or his legal beneficiaries, Patent Pending.
Our rotor assembly is built to the exact same specifications we use when we rebuild a supercharger at The High Speed Lab™ supercharger shop. The bearings and seals used are upgraded from the original part specifications and most importantly, the rotor seals are now a Double-lip Viton.
Re-manufacture process details for this Eaton Supercharger Rotor Assembly:
The rotor assembly plate is completely disassembled including removing the old seals and bearings. The bearing plate is carefully measured and paired with a newly recoated pair of rotors. The rotor coating is a thermal barrier coating, similar to Piston Skirt coating in durability and environment parameters. This coating is durable enough to be used in harsh environments found in engine configurations using nitrous injection systems, methanol or water injection. The rotor assembly plate is CNC machined to accomplish correct rotor timing and front rotor-to-bearing plate clearance, typically set at 0.006\" to 0.009\" and the mesh is split +/- 0.001\" for optimum supercharger operation. Both rotor seals and rotor ball bearing have been replaced.
What does this item include?
This item includes the same high quality parts we use in our rebuild services. This kit contains a re-manufactured rotor assembly. This item is Quality Control checked. As an informed DIY Do-It-Yourself person, you are purchasing this component to complete the rebuild service yourself. You are making the decision to take upon yourself the responsibility of the successful outcome.
A Genuine Eaton Rotor Assembly that has been professionally re-manufactured with new rotor coating, timing gears installed, ready to be installed into supercharger housing by you or a technician. It will come with our Complete Supercharger Nosedrive Rebuild Kit with all the parts and materials to complete the rest of the complete supercharger rebuilding service yourself. This parts and materials kit includes a Supercharger nosedrive rebuild kit with housing needle bearings:
Two AC Delco supercharger oil, 4 ounce bottles (2)
Permatex anaerobic gasket maker for aluminum flanges, a red sealer (1)
Coupler, prepared with installation grease (1)
Back nosedrive ball bearing (1)
Front nosedrive ball bearing (1)
Premium Viton front nosedrive seal with double-seal internal diameter, prepared with installation grease and oil on internal diameter of the lips of the seal. (1)
Nosedrive Rotoclip, a quality replacement of original wire retaining clip (1)
Plastic Syringe with tubing for oil extraction (1)
Cup-type needle bearing pair, to install sub-flush below surface of interior housing face that bearings are being pressed into. A pair of rotor needle bearings for you to install in the housing. (2)
FREQUENTLY ASKED QUESTIONS:
If I have a non-supercharged car, can I buy this item and get a complete supercharger head unit with the engine fit kit including everything that is needed to install a supercharger on my vehicle?
No, this is not a complete supercharger. Instead this is a kit that contains the components to rebuild a supercharger you already own.
Who and what is this kit designed for?
For the shop technician or a Do-It-Yourself person, this kit includes the re-manufactured rotor assembly. It is produced with the same high quality bearings and seals used in our Complete Supercharger Rebuild Service. This item has been designed by our Shop Foreman, based on years of successfully servicing Eaton superchargers to give you the best chance at success when performing the supercharger rebuild service yourself.
What if I receive the kit and am concerned I am not set up to complete the installation or as I started the service work I found there is unforeseen damage that I need help with?
Technical support is available by email or phone. If you decide at any point to have a professional technician perform this service, send it in. The rotor assembly is correct when it leaves the shop. Damage that occurs after the point where it is packaged for shipment from us, is completely on the mechanical person performing the rebuild service, whether you or your mechanic. No refunds will be given however, if you run into issues, contact us first because we can help. Never allow the rotor assembly to fall over or be dropped because this can damage the timing and would not be covered by warranty. If this happens, contact us immediately for technical support. Sharing pictures of unforeseen damage is helpful and an easy way to start determining the supercharger\'s condition and service solutions.
What can be done to confirm this is the right item for my application?
Send us a message with some mobile phone pictures of the supercharger to be serviced.
This is an important first step. If needed, the Shop Foreman will require these pictures to identify the supercharger and to help us make sure proper components are sent. There are several variations that must be considered to make sure the drive gear is on the correct side of the rotor assembly and the correct ball bearings are provided. For a list of most compatible vehicles see the compatibility chart.
We are happy to help you make sure you order the right part for the job. If you have ANY DOUBTS about this being the one your application needs, please email us before you purchase this item. Include a mobile phone picture of the one you are working with, for the Shop Foreman to look at. Also, include the vehicle VIN#, year, make, model and trim level to assist in the identification of the vehicle application.
It is not always easy to be sure what you have because there are so many variations to the Eaton superchargers. With this in mind we want you to know that if the rotor assembly that arrives does not match the one you need to replace, contact us immediately. Do not panic and remember we have offered this because we want to help you get the right parts. We want you to have the right one and will work with you to exchange it when an honest mistake is made. Please help us by making your best effort to be sure which rotor assembly you need before you place your order. It is okay to tell us in your order email that you are not sure what you need. It can really help us to help you if you would email us a photo, and for this cell phone photos work great. We can prevent delays and frustration by looking at your snapshots for 5 minutes instead of all the extra work to exchange the part. Let us help you up front if you aren\'t 100% sure you know what you have and what you need.
Is this the right kit for a supercharger with a short nose drive?
No. Some superchargers come with short nose drives that need a single double-row ball bearing instead of two single-row ball bearings. If you have one or suspect you have one, you should send us a photo of your short nose drive supercharger because we must know in order to provide the appropriate nose drive ball bearings. We have the appropriate parts and you will want to confirm this with your order so that we can include the correct parts in your kit.
What is the difference between the Eaton M90 and M112 superchargers?
This item is for an Eaton M112 which shares the same bearing plate as some M90s but the M112 rotors are longer. The M90 kits are available through our store, too. Message us with questions and we can help you determine what item is right for you.
How can the Eaton supercharger model be determined?
With the Gen 1, 2 & 3 Eaton superchargers, this is a simple matter to determine because holding the nose drive on the:
Eaton M45 Gen 3 has 8 bolts
Eaton M62 Gen 3 has 8 bolts
Eaton M90 Gen 3 has 9 bolts
If the supercharger bearing plate you are working on looks way different than this, then just email us some phone pictures and ask our Shop Foreman to assist you in determining the supercharger type you have and what kit you need.
THIS ITEM IS FOR: Eaton M112 Gen4
THIS ITEM IS NOT FOR:
Eaton M45 Gen3
Eaton M45 Gen3 with short nose drive
Eaton M45 Gen4
Eaton M45 Gen5
Eaton M62 Gen3
Eaton M62 Gen4
Eaton M62 Gen5
Eaton M90 Gen3
Eaton M90 Gen4
Eaton M90 Gen5
Eaton M112 Gen5
Eaton M122
Eaton TVS 4-lobe
This kit is NOT for these supercharger model/generations because they use a different rotor assembly bearing plates. Please contact us to get more details about a supercharger rebuild kit for these or other Eaton Models that are not listed here. Contact us by email or during business hours at our main phone [phone removed by ].
What are the specifications for the Rotor Coating?
Superior, our Rotor Coating is very consistent because it is thickness checked during quality control inspection to ensure even application. Not all rotor coating available in the market is precision checked like ours. We check them so carefully after coating because the rotor assembly will work best and most quietly with proper thickness of rotor coating. You can see that the bearing plate is precision CNC machined to set the ideal tolerances, giving you optimum performance.
What does this supercharger rebuild kit process include?
You, the buyer will have the parts that you need to replace the rear rotor needle bearings, rebuild the nose drive snout and install the rotor assembly yourself.
Technical support from the Shop Foreman is available during normal business hours by contacting us through the message center in . Our main shop phone number is available on our company website.
What are some important process points that can help with the rebuild process?
The inside race of the front nose drive ball bearing must be supported when installing the shaft. This means the shaft must be installed before the front nose drive seal is installed because the front nose drive seal will cover the inner race of the front nose drive bearing when the seal is installed. If you do not support the inner race, it will result in installation damage to the ball bearing. A clicking noise in the bearing after installation is a symptom of this.
Never use ball bearings with dust covers because in this application they are used in an oil bath.
Should a contact phone number and email be provided by the buyer when the item is ordered or purchased?
Providing a phone number and email is essential for quality service because we can contact you if there are any questions about your order. Of course we never have time to spam and never share information.
What will the supercharger rebuild process include when using this kit?
You, the buyer will have the parts that you need to replace the rear rotor needle bearings, rebuild the nose drive snout and install the rotor assembly yourself.
We include and recommend using Permatex Anaerobic Gasket Maker (PX#51817 NET .20 FL OZ or PX#51813 NET 1.69 FL OZ) which is designed for Aluminum flanges. Do not get any sealer or any debris in the rotors during installation. Do not use too much sealer or it will squeeze out into the rotors which will damage the supercharger. Completely clean any old sealer off the surfaces you are connecting the supercharger to because leaving the old sealer on the flanges will distort the supercharger housing when bolted together and cause failure. Follow the instructions on the package of the sealer for best results.
What is the tolerance goal for my assembly to work properly?
You will want a minimum gap of 0.006\" to 0.010\". The gap can be greater than 0.010\" however this wide of a gap will allow for air charge leakage. The smaller the gap between the rear housing and the back rotor faces, the tighter the supercharger seal. The rotors should never touch each other or the housing internal bores, anywhere at all.
What Warranty Coverage is included with my purchase?
Our One-Year Warranty and our long-term reputation will be your peace of mind.
If you have any questions, before you buy this kit please contact us because we want to send you the right part the first time. A few quick emails can make all the difference in the long run. This will give us the chance to address concerns before we both have invested time and money. Also, you may have the same question as someone else which we can share by posting answers for others to learn from. Our supercharger rebuild kits are designed by the Shop Foreman for the best opportunity for success.
And as always, we are here if you decide it might be in your best interest to have a professional supercharger technician service it. Yes, we can rebuild it even if you have started the service yourself. Try not to tear anything up and package all the parts up carefully.
Get started today on your supercharger rebuild service, knowing you have choices to fit your budget, time frame, mechanical skill level and available shop tools.
We appreciate your business.
The High Speed Lab™ supercharger shop
The Shrill Is The Thrill!!!™
