4 Cyl Engine Bare Block for 41-53 Jeep & Willys with 4-134 L Engine
Finally the 4-134 L engine has been reproduced!!
All machined surfaces are milled to original design specifications. Block includes: Valve guides; hardened valve seats, NPT threaded oil galley plugs, freeze plugs and camshaft expansion plug.
– Cylinder Bore: 3.1255 +/- .0005
– Valve Guide Bore Diameter (In & Ex): .374 +/- .0005
– Valve Seat Surface Width: .09375? to .125 +/- .0005
– Tappet Bore Diameter: .626 +/- .0005
– Oil Galley Taps/Plugs: NPT 1/8 & NPT 3/8
– Oil Galley Taps – Tapered
The machining operation is using automated CAD CNC machining with tolerances exceeding .0005 inches-far more precise and exceeding the tolerances of American-made ’40s Willys engines.
Sample blocks were completely maped on a Coordinate Measuring Machine (CMM) and created a 3-D drawing in Solid Works to begin the process. The CMM factory used can measure up to 1.5 micrometers in accuracy (0.000059″).
In effect, they reverse engineered the 4-134 L engine block and set it up as such. Instead of using a green sand casting as the original blocks were made, they used the investment cast method for more structural integrity and durability, as well as surface finish and machining surfaces, even though it is more expensive. In addition, the new grey iron blocks have a higher content of chromium and copper for added strength and durability over the original design.
Each block has an individual serial number.
They are each coated with a rust inhibitor and shipped in a wooden crate and come with a warranty and general prep information and each has an inspection tag with critical specs.
NOTE: SHIPS TRUCK FREIGHT $195.00
Call Mike@Kaiserwillys.com for details at TOLL FREE 1-888-648-4923 (Mon-Fri, 9AM-5PM EST).
New 4 Cylinder Engine Bare Block – Part#: 641145
Q: Are you going to do the same with the 4-134F engine?
- A: They are working on it now.
Q: It looks like this engine will fit a wide variety of military and civilian Jeeps. How much does it differ from an original MB or GPW block and what additional parts are required to get a running operational block?
- A: They will interchange no problem. You will need to use your chain driven camshaft and gears for it. That is all.
Q: What is the shipping price to Marseille in France? Thank you.
- A: Please email firstname.lastname@example.org your full shipping address and the part number and quantities you need and we can quote you out. Thanks!
Q: What color was the engine painted originally from the factory?
- A: Typically they were black if civilian and OD green if military.
Q: Will all of the original motor accessories, fuel pump, generator mounting bracket etc. for an 1952 M38 Military Jeep bolt on to this block with out additional modifications?
- A: Yes, it will. This is a 4-134 L gear block.
Q: Are the cam bearings installed?
- A: There is only 1 camshaft bearing on a 4-134, they are separate part number: 645595
Q: Can we now build a complete brand new L head with parts from your store? Can I get the vin number from my 3A stamped on my new block from the factory, this would allow me to have a number matching jeep? I could supply a copy of my motorized title and any other info needed. My stock engine was stolen during the rebuild.
- A: We can help you out with pretty much everything from start to finish. These are pre stamped at the factory, so you cannot get the numbers of your old engine put on.
*EMAIL or call Mike Toll Free (1-888-648-4923) Mon-Fri, 9am-5pm EST if you have any questions about this part or restoring your Willys.