Table of Contents
Is the Jeep inline 6 a good engine?
It’s a strong and reliable engine, however, the 4.0L straight-6 is also known for a lack of power. Regardless, the 4.0 is an excellent all around engine that many appreciate to this day….4.0 Straight-Six Engine Specs.
| Engine | AMC/Jeep/Chrysler 4.0 |
|---|---|
| Compression | 8.8 : 1 to 9.2 : 1 |
| Power | 173-190 HP |
| Torque | 220-235 lb/ft |
Is the AMC 4.2 a good engine?
Registered. The 4.2 is a solid engine as well and as you said at a less horse power than the 4.0. The number of miles the engine can get on it is based on proper service on both models. The major difference between the two is the 4.2 is carbureted and the 4.0 is fuel injected.
How do I know if I have a 4.0 Jeep engine?
The digits of the code identify:
- 1st Digit-The year (8 = 1998).
- 2nd & 3rd Digits-The month (01 – 12).
- 4th & 5th Digits-The engine type/fuel system/compression ratio (MX = A 4.0 Liter (242 CID) 8.7:1 compression ratio engine with a multi-point fuel injection system).
- 6th & 7th Digits-The day of engine build (01 – 31).
When did the AMC 4.0 come out?
1987
Introduction of the 4.0 The Jeep 4.0 oil capacity engine we know and love was introduced in 1986 for 1987 models. AMC developed this 242 cu engine in 26 months with an improved combustion chamber, cam profile, port setup, and overall strength.
What years did jeep use the 4.2 engine?
FYI, the 4.2 was an optional engine in the YJ line from 87 to 90.
What kind of engine is an AMC I6?
AMC I6 (and V8) engines do not share block bolt patterns with any other engine, including all Willys, Kaiser and Chrysler engines. The I6 is natively and otherwise compatible with several great transmissions. Some popular choices in Jeeps include: In 2006, DaimlerChrysler pulled the plug on the I6, ending its 36 year run in Jeeps.
What was the first AMC straight 6 engine?
AMC straight-6 engine American Motors’ first straight-six engine was the 195.6 cu in (3.2 L). It was produced from 1952 through 1965 in both overhead valve (OHV) and flathead (L-head) side-valve versions. Sometimes referred to as the 196 engine, this engine was originally designed by Nash and introduced in the 1941 Nash Ambassador 600 model.
What kind of engine does an AMC car have?
The American Motors Corporation (AMC) straight-6 family of engines was used in AMC passenger cars and Jeep vehicles from 1964 through 2006. American Motors’ first straight-six engine was the 195.6 cu in (3.2 L).
What are the most common problems with AMC engines?
However, no engine is perfect and that applies to the legendary AMC/Chrysler/Jeep 4.0L engine. These engines are known to run into problems such as exhaust manifold cracks, oil leaks, and water pump failures. This also isn’t an exhaustive list.