Radiator overflow tank pontiac grand prix11/21/2023 ![]() I modified the bracket that came with the kit and attached it using an existing hood latch bolt. Instructions on cap indicated that arrows on cap must line up with overflow connection. This cap was designed for a coolant recovery system. I used a radiator cap from a 1990 Pontiac Grand Prix. Note that the Jaguar original expansion tank cap is not designed to work with an overflow system. Overflow hose (blue arrow photograph below) is routed from expansion tank through fender bracket, behind brake booster, brake fluid canister, wiring harness and A/C expansion valve and over to new overflow recovery canister. So I used a 90-degree hose elbow to attach to a chromed copper tubing to route the coolant up the side of the canister. My modifications not only must work, they must look good. You can just use the correct size hose to connect back to the radiator's expansion tank's overflow connection. Use a drill bit to open the correct nipple. Based on the orientation of the canister when installed, the bottom "nipple" is identified. The coolant entry from the radiator expansion tank must to be at the bottom of the overflow canister. With canister and washer pump installed to new locations, the electrical connecters for washer pump has enough slack to reach the new pump location. ![]() Note the modified washer canister bracket in the photograph below. The non-original windshield washer pump (green arrow photographed below) must also be relocated by riveted it to the windshield washer canister bracket The windshield washer canister bracket is modified to move the canister as far as possible towards the center of the engine compartment. Note that the windshield washer canister will have to be relocated. Initial fit indicates that there is just enough space. Now I have the necessary 3.25 inches between the starter relay cover and the windshield washer mounting bracket (double green arrow photograph below). In the photographs below, approximately 1/4 inch of the cover is removed with tin snips. First the cover (red arrow photograph below) is removed. In order to get the 3.25 inches necessary for the installation the cover for the starter relay had to be modified. Canister orientation will dictate which ones to use.Ĭreating space was the next objective. These are the entry and exit points for coolant. The canister is designed with three "nipples" (blue arrows photograph below). Pictured below is the generic Coolant recovery system, designed for various applications. That meant that, among other things, the windshield washer canister would have to be moved. That space, however was not enough, I needed 3.25 inches. The only available space in the engine compartment of the V12 XJ-S is the windshield washer canister location. Finding space usually means that something has to be moved or relocated. Putting in a coolant recovery system meant finding space for it. The 3.25 inches width is critical, as there is not an overabundance of space in the XJ-S engine compartment. Although the capacity is only 1.5 quarts, it would be sufficient for this project. (This system was sourced from JC Whitney.) I chose the narrow container, approx. I chose a recovery system manufactured by Interdynamics, available from a number of automotive stores and mail order companies. I decided to install a Radiator Coolant Recovery system. In addition, one cannot see the coolant level in the expansion tank, and must rely only on the low-level coolant sensor to monitor coolant level. ![]() The Jaguar Pre-HE's radiator has an expansion tank but no provision for coolant recovery. Install Radiator Coolant Recovery System Installation of a Radiator Coolant Recovery System
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