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GlennC
06-01-2023, 09:37 AM
The radiator cap that came with my Gen 1 kit seeps a little when the engine reaches operating temp. I assume it's a 16 lb. cap. Are all caps universal or do I have to get a cap for a specific vehicle?



One reason my cap may not be sealing properly is that I've noticed some white, crusty build-up/corrosion on the sealing surfaces of the radiator neck. Any idea how to get rid of this build-up?



My FFR supplied overflow tank is located on the passenger side firewall with the overflow connected to the radiator with rubber & steel line and seems to be working okay. Any body have any issues with this same set-up? Should the overflow tank be mounted closer to the radiator to avoid the long distance travel of the coolant back and forth?



Thanks

RJD
06-01-2023, 12:56 PM
Make sure the overflow isn't obstructed. I found this thing blocking the overflow causing my cap to seep. At least one other forum member experienced this as well.

185250

185251

Mastertech5
06-01-2023, 08:42 PM
Standard closed system 16 lb. Cap

JimLev
06-05-2023, 07:22 AM
My cap leaked when I got to operating temp. I bought a new cap that had a pressure release lever at O’Reilly’s. Works fine now.