PLUNGER LIFT (MM) AT TDC

CAUTION Use the correct lift spec for your engine CPL!

(a) 49 state CPL’S include: 1549, 1550, 1815, 1816, 1959 for 175 and 160 hp engines with manual and auto transmissions. Also included in this group are non-ram CPL’S 1551, 1552, 1553, 1839, 1914, 1915, 1916, 1959, 1839

(b) CPL group 2022, 2174, also includes non-ram CPL’S 1968, 2265, 2268, 2308

(c) Non-ram applications - CPL’S 1563, 1566, 1569, 1658, 1812, 1905, 1917, 1918, 1920, 1922, 1923, 1949, 1950, 1972, 2034, 2101, 2103, 2104, 2106, 2107, 2108, 2150

(d) Non-ram applications - CPL’S 1564, 1919, 2011, 2102, 2105, 2158, 2169, 2191

(e) Non-ram applications - CPL’S 987, 1261, 1262, 1263, 1406, 1422, 1582, 1618, 1850, 2118, 2196

CPL 2175, 2023, 2022, 2174,1863: Green box is the recommended setting from TSB 18-11-96

• CPL 2022 engines should be stamped CPL 2174 and 14.0 deg BTDC

• CPL 2023 engines should be stamped CPL 2175 and 13.5 deg BTDC

The allowable tolerance range for timing is ± 0.1 mm.

Our six-degree bump didn’t cause the stock turbo to spool much slower, but the engine definitely had more top end, peaking at 378rwhp, a clean 30rwhp up from our last reading. Plus now we finally had an answer-does timing add power? Yes it does!