The 2002-2012 Jeep / Dodge 3.7L engine is available at Roadmaster Engine Word. This Dodge 3.7l engine is found in the Jeep Liberty, Jeep Grand Cherokee, Jeep Commander, Dodge Dakota and Dodge Durango.
Dodge 3.7l Engine
Hence this 3.7l PowerTech V-6 engine is, essentially, the 4.7 V-8 with two fewer cylinders. In addition Dodge 3.7l engines first use was being the optional engine on the Jeep Liberty. Followed quickly by use as the 2002 Dodge Ram’s base engine.
The 3.7 has a 90 degree V-6 design with cast iron block. Also compacted graphite bedplate and aluminum cylinder heads with single overhead cams on each bank. A centrally-mounted, gear-driven counter-rotating balance shaft. Along with a split-pin crankshaft, reduces vibration.
In comparison to the 4.7 on which it is based, the 3.7 features chain-driven overhead cams to provide long-term durability and reliability. A fabricated tubular camshaft with powder metal lobes helps reduce engine weight.
Unlike many new engines, the 3.7 has only two valves per cylinder. Rather better for low-end torque, but not as good at higher rpms. Since the 3.7 will be in relatively heavy vehicles, that could be a good design choice.
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Need cylinder head bolts torque spec for 3.7 l jeep Cherokee 2008.
Here is the procedure for tightening the head bolts from the Factory Service Manual:
NOTE: The cylinder head bolts are tightened using
an angle torque procedure, however, the bolts are
not a torque-to-yield design.
(6) Tighten the bolts in sequence using the following
steps and torque values:
• Step 1: Tighten bolts 1–8, 27 N·m (20 ft. lbs.).
• Step 2: Verify that bolts 1–8, all reached 27 N·m
(20 ft. lbs.), by repeating step-1 without loosening the
bolts. Tighten bolts 9 thru 12 to 14 N·m (10 ft. lbs.).
• Step 3: Tighten bolts 1–8, 90 degrees (Fig. 12).
• Step 4: Tighten bolts 1–8, 90 degrees, again.
Tighten bolts 9–12, 26 N·m (19 ft. lbs.)
How much does the 3.7L weight? I’ve looked all over and can’t find a number.
When we get ready to ship these engines, we ship them at 450lbs. This includes the weight of the container.
Thanks for the info. Im going to be doing a 340ci V8 swap ( weight 525lbs. ) and was wondering the difference. You were very helpful.