Lower Crankcase - Bottom 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: Lower Crankcase Thread Specifications - Bottom 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	M8 x 1.25	210	206	207	208	209	23.50	0.925	18.5	0.73
2	M8 x 1.25	210	206	207	208	209	23.50	0.925	18.5	0.73
3	M8 x 1.25	210	206	207	208	209	23.50	0.925	18.5	0.73
4	M8 x 1.25	210	206	207	208	209	23.50	0.925	18.5	0.73
5	M8 x 1.25	210	206	207	208	209	23.50	0.925	18.5	0.73
6	M8 x 1.25	210	206	207	208	209	23.50	0.925	18.5	0.73
7	M8 x 1.25	210	206	207	208	209	23.50	0.925	18.5	0.73
8	M8 x 1.25	210	206	207	208	209	23.50	0.925	18.5	0.73
9	M8 x 1.25	210	206	207	208	209	23.50	0.925	18.5	0.73
10	M8 x 1.25	210	206	207	208	209	23.50	0.925	18.5	0.73
11	M8 x 1.25	210	206	207	208	209	23.50	0.925	18.5	0.73
12	M8 x 1.25	210	206	207	208	209	23.50	0.925	18.5	0.73
13	M8 x 1.25	210	206	207	208	209	23.50	0.925	18.5	0.73
14	M8 x 1.25	210	206	207	208	209	23.50	0.925	18.5	0.73
15	M8 x 1.25	210	206	207	208	209	23.50	0.925	18.5	0.73