Cylinder Head - Top View

WARNING: This page is about a different car, the 2004 Saturn Ion 3, 2004 Saturn Ion 2, and 2004 Saturn Ion 1. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Cylinder Head Thread Specifications - Top View

Courtesy of GENERAL MOTORS CORP.

Service Call Out	Thread Size	Insert	Drill	Counterbore Tool	Tap	Driver	Drill Depth (Maximum)		Tap Depth (Maximum)
J 42385-							MM	(IN)	MM	(IN)
1	M6 x 1.0	205	852	N/A	203	204	24	0.945	20	0.787
2	M6 x 1.0	205	852	N/A	203	204	24	0.945	20	0.787
3	M6 x 1.0	205	201	202	203	204	20	0.787	16	0.630
4	M6 x 1.0	205	201	202	203	204	20	0.787	16	0.630
5	M6 x 1.0	205	201	202	203	204	20	0.787	16	0.630
6	M6 x 1.0	205	852	N/A	203	204	24	0.945	20	0.787
7	M6 x 1.0	205	852	N/A	203	204	24	0.945	20	0.787
8	M8 x 1.25	854 No Flange	206	207	208	209	THRU		THRU
9	M6 x 1.0	205	201	202	203	204	20	0.787	16	0.630
10	M6 x 1.0	205	201	202	203	204	20	0.787	16	0.630
11	M6 x 1.0	205	852	N/A	203	204	24	0.945	20	0.787
12	M6 x 1.0	205	852	N/A	203	204	24	0.945	20	0.787
13	M6 x 1.0	205	201	202	203	204	16	0.630	THRU
14	M6 x 1.0	205	201	202	203	204	16	0.630	THRU
15	M6 x 1.0	205	852	N/A	203	204	24	0.945	20	0.787
16	M6 x 1.0	205	852	N/A	203	204	24	0.945	20	0.787
17	M6 x 1.0	205	201	202	203	204	20	0.787	16	0.630
18	M6 x 1.0	205	201	202	203	204	20	0.787	16	0.630
19	M6 x 1.0	205	852	N/A	203	204	24	0.945	20	0.787
20	M6 x 1.0	205	852	N/A	203	204	24	0.945	20	0.787
21	M6 x 1.0	205	201	202	203	204	20	0.787	16	0.630
22	M6 x 1.0	205	852	N/A	203	204	24	0.945	20	0.787
23	M6 x 1.0	205	852	N/A	203	204	24	0.945	20	0.787
24	M6 x 1.0	205	201	202	203	204	20	0.787	16	0.630
25	M6 x 1.0	205	852	N/A	203	204	24	0.945	20	0.787
26	M6 x 1.0	205	852	N/A	203	204	24	0.945	20	0.787
27	M6 x 1.0	205	201	202	203	204	20	0.787	16	0.630
28	M6 x 1.0	205	201	202	203	204	20	0.787	16	0.630
29	M6 x 1.0	205	852	N/A	203	204	24	0.945	20	0.787
30	M6 x 1.0	205	852	N/A	203	204	24	0.945	20	0.787
31	M6 x 1.0	205	201	202	203	204	20	0.787	16	0.630
32	M6 x 1.0	205	201	202	203	204	20	0.787	16	0.630
33	M8 x 1.25	210	206	207	208	209	25	0.984	20	0.787
34	M8 x 1.25	210	206	207	208	209	25	0.984	20	0.787
35	M8 x 1.25	854 No Flange	853	N/A	208	209	25	0.984	20	0.787
36	M8 x 1.25	854 No Flange	853	N/A	208	209	25	0.984	20	0.787
37	M6 x 1.0	210	206	207	208	209	20	0.787	16	0.630
38	M6 x 1.0	205	852	N/A	203	204	24	0.945	20	0.787
39	M6 x 1.0	205	852	N/A	203	204	24	0.945	20	0.787
40	M6 x 1.0	210	206	207	208	209	20	0.787	16	0.630
41	M6 x 1.0	210	206	207	208	209	20	0.787	16	0.630
42	M6 x 1.0	205	852	N/A	203	204	24	0.945	20	0.787
43	M6 x 1.0	205	852	N/A	203	204	24	0.945	20	0.787