TracTuff RBB/ RBC Billet Water Neck w/ Swirl Tank & Overflow
Our RBB/ RBC swirl tank with integrated overflow eliminates the need to route an overflow hose to the core support or frame rail. Original heater port cannot be used due to the configuration but a hose barb or AN bung can be added to the exposed side of the swirl tank on request.
Our billet water neck has the largest port allowed for the best flow within the OEM gaskets footprint and has 1/2" NPT heater port. The domestic cap bung has a 1/8" NPT port and the import version has a 1/16" NPT for connection to an overflow. The domestic version uses any early model (mid 70's through late 80's Chevy) cap and the import version uses early model Honda (88'-91' Civic/ CRX and 90'-93' Integra) cap.
NOTE: Made to Order... usually a 2-3 day lead time - Contact for ETA - The intake cam sensor must be swapped to the version that points up in order to clear the tank. If you are interested in a specific design that varies from this, please email us at firstname.lastname@example.org. If using AN lines we also recommend designing the upper radiator hose so that there is droop/ give so the engines movement and does not push/ pull on the radiator and fatigue any parts. Tank is welded so that it sits level when bolted to an engine with a 15° lean back (exhaust side).