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Upgrading with the same base pressure as the factory
with the goal to improve performance and durability
Instructions found HERE
or maybe add our Series 1 to Series 2 RB30 block adaptor kit which allows you to passenger side mount the tensioner landing
Superior oil and compression control
Kelford Cams 9-TX272 | 4G63 EVO 9 MIVEC - 272°/272° | 11.00mm/11.00mm Nissan Silvia S13 Upgrading with the same base272 272 11. 00mm 11. 00mm Kelford Cams recommends proven 272 racing camshafts for 4G63 MIVEC engines with a turbo size range of 54 62mm and a horsepower range of 400 650hp. These camshafts offer a broader power band and improved throttle response when using MIVEC. Kelford Cams recommend valve spring KVS63 BTK for up to 8500rpm and 35psi of boost.
