1987-2006 Jeep 4.0L Inline Six - Inside The Inline
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7. The 258 crankshaft bolts into the 4.0L block with no trouble. We used the latest 258 crank, the '87-'90 model (casting No. 3727). This is an 8-counterweight version that is compatible with serpentine belts. Earlier cranks have a longer snout and require a spacer (Hesco makes 'em) for pulley alignment. Especially important to manual transmission users, the 258 and '87-'91 4.0L cranks have a larger pilot bushing outer diameter (OD) than the '92-'06 4.0L engines. We used a bushing that had a 1.82-inch OD and 0.75-inch inner diameter (ID) found at a parts store. It fits into the larger bore at the end of the crankshaft. There are other possible dimensions depending on which trans you have, so pay attention. View Related Article
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Toyota 4runner Research
Finding a fuel efficient automobile today is easier than ever. Check out the Toyota 4runner buyer's guide providing information on car specs, reviews and fuel economy. The 2010 4runner is available with the following engine options: V8, V6, and comes with comparable warranty coverage to other vehicles in its class. You also might want to research the Dodge Durango and the GMC Sierra.
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