Remove particulates from the fuel before the pump and injectors.
The Holley HydraMat acts as a 15 micron pre-pump filter with a large enough surface area that debris does not notably affect flow, which is why no secondary filter is needed.
No part-specific design process is documented. The Fuel subsystem design process applies: 1. Set tank volume from endurance consumption plus margin, with the HydraMat area and the tank CG as constraints. CR26: 1.4 gal cell, 1.56 gal effective system. 2. Design the sump to the acceleration cases: 1.42 g at 45 deg from vertical under acceleration against a rear wall 30 deg from vertical, and 2.51 g at 66.5 deg from vertical under braking against a vertical front wall. 3. Lay up the sump: 1 layer of Kevlar over 5 layers of stitched carbon twill on HIPS dissolvable molds, bonded with 3M DP420, sealed with Caswell epoxy gas tank sealer. 4. Design the top plate: -4 AN weld bungs instead of fittings, stud bulkhead terminals so no fuel path runs through wire, an aluminium terminal block for proper bulkhead seating. 5. Leak test the assembled system before it goes in the car.
Fault Vault, 2026-05-17, CR26I: fuel cuts under lateral load at low fuel level. The HydraMat, which is also the pre-pump filter, was sitting too high in the tank. It was lowered and the pump rewired.
CR22 filter: Earls performance in-line, -4AN fittings, 0.16 lb, part number AT230204ERL, $47.79. Superseded once the HydraMat took over pre-pump filtration at 15 microns. From the cost report drawings and CAD: Dimensions called out on the cost report drawings. These are the figures printed on the drawing, not a labelled specification; open the drawing itself for what each one refers to. Fuel Filter (as drawn): 56.90, 5.87, 25.40, 0.76 Source: Cost report drawings: CR22/Powertrain/Design/X - Cost Report Drawings/Fuel Drawings/Fuel Filter.pdf Quantity per car, as costed: 1
Nothing in CrimsonStorage covers these yet.