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WE CAN HELP YOU WITH YOUR BOAT PURCHASE! EVEN IF YOU DON’T BUY YOUR BOAT FROM US!

Buying a boat can be an intimidating experience. It could also cost you a lot of money in the long run if you are not sure what to look for with a purchase of a pre-owned boat. We can help assure the boat is mechanically sound as has been taken care of properly. Grand Sport Center, Inc. has over 38 years of experience in service and evaluations of pre-owned boats. We have O.E.M. certified technicians with certified diagnostic tools. Whether you’re looking for a simple mechanical inspection, complete service, computer scan, or evaluation we can do it all!


Our basic inspection starts with a full fluid inspection checking for levels and contamination. We then check all the electrical systems on the boat for proper operation. This includes a complete load test on the battery system, gauges, lights, stereo, bilge, blower, and any other electrical components. We will follow up with a mechanical dynometer test. This will put a full load on engine and drive components and allow you to hear and see the engine’s operation at full RPMs. We will then present you a printout with the complete checklist, dynometer pressure, and RPM data.
This service is available for $275.00.

We also offer a complete computer/diagnostic scan of E.F.I. products. This will include a complete diagnostic printout which will show:
- Complete engine hour including: total engine hors and engine hours per RPM range
- Diagnostic codes and error code history. This also includes a description of the fault and hours on the engine and when the fault was activated.
- All current data streams and default values including: total RPMs, max RPMs, idle RPMs, temperature, oil pressure, IAC values, and etc.
- Customer name, serial numbers, and model numbers are all included with your printout. This makes an excellent way to start a service history record for your boat.
This service is available for an additional $120.00.

Our Flagship Inspection service is the best peace of mind you can get with the purchase of your pre-owned product. We will do everything included in the basic service, EFI computer scan and printout, and complete 100 hour/annual service. This service is based upon a manufacturer’s yearly recommended service. After completion of the basic inspection and computer scan, we will change the engine and drive fluids. All applicable filters will be changed including fuel filters and oil filters. The cooling system will be inspected and checked for deterioration, damage, and proper torque on all connections. The entire motor and drive package will be inspected and checked for any loose, missing, or damaged parts. We will then check the shift and throttle cables to ensure they are adjusted correctly. The steering system will be inspected and lubricated. All of the belts on the engine are then inspected for proper fit and adjusted as needed. At this time, the stern drive will be removed from the boat. With the drive removed, we will be inspecting for proper engine alignment, coupler wear, proper gimbal ring torque and lubrication of the gimal bearing. Engine exhaust will be inspected and PCV will be changed if applicable to your motor. The motor mounts are then inspected for proper torque and the lubrication is changed in the seawater pumps with mounted fuel pumps.
This service is available for $799.99.
This total includes basic inspection and computer scan.

If we can help you with any of our services, please contact:
Steve Miller at our Lake in the Hills, IL location at (847) 458-6488
Geanean Misener at our Morris, IL location at (815) 941-2220

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Note: all information on this page is believed to be accurate however, it is subject to confirmation by Grand Sport Center Inc.
Grand Sport Center Inc. offers the details of this vessel or vehicle in good faith but cannot guarantee or warrant the accuracy of this information nor warrant the condition of the vessel (or vehicle). A buyer should instruct his agents, or his surveyors, to investigate such details as the buyer desires validated. This vessel or vehicle is offered subject to prior sale, price change, or withdrawal without notice.