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Caterham at Bilster Berg 1:52.4 2025
Simon Grossjohann
Level:
Amateur
Simon Grossjohann
Lap Date : 05 May, 2025
1min 52.4sec
Bilster Berg
Caterham Seven 620R 2015 (SimonG/Race)
Race
Tire: 20 ZZR A24
Tire Size: 205/60/13
Published on 30 Aug, 2025

I swapped the Caterham 6-speed gearbox with a Sadev in winter, and so happy about it. Smooth and lightning fast shifts, no issues anymore to get any gear in - it just works.

Also I'm really happy about the latest cooling modifications - the ambient temperature in the video was around 27°C and you can see 85-88°C water at engine outlet (left instrument) and 95-100°C oil on engine inlet (right instrument) and I didnt really take it easy on the engine. This is about 10°C lower oil temperatures compared to last year, even though a really hot track day will probably push it a little bit further.

My current setup on the k-series is: Radtec cooler with rover oem PRRT, deleted bypass, autobleed banjo in radiator, the large laminova oil-water cooler ECD54-182 in engine outlet before radiator inlet. You just fill the system up and it works, no bleeding necessary. :)

Note to self: Hero12 + stock lens + 1080p30 super view

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