New 4 Cylinder Engine Bare Block
Fits 41-53 Jeep & Willys with 4-134 L engine
New 4 Cylinder Engine Bare Block
Finally the 4-134 L engine has been reproduced!!
These are bench tested and ready to be rebuild as your new 4-134 L engine.
Can be used as either a gear driven engine or chain driven engine.
All machined surfaces are milled to original design specifications.
** Please watch our build video below of the 4-134 engine bare block!
It is made with a formula of current cast iron reinforced with the same coefficients of expansion as the originals.
Included with the kit:
-Set of 4 standard pistons with pin
-Set of standard piston rings, 1
-Crankshaft rear bearing drain pipe
-Oil galley plugs
-Set of 5 main bearing dowels
-Set of 5 freeze expansion plug
-Camshaft expansion plug
-Set of 8 valve guides installed
- 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
Each block has an individual serial number. These were constructed using original plans and over three years of studies and tests on (2019-2023).
They are each coated with a rust inhibitor and shipped in a wooden crate.
Application
4-134 L engine
Fits:
41-45 MB
41-45 GPW
46-49 CJ-2A
49-53 CJ-3A
50-52 M38
46-49 Truck
46-49 Station Wagon
48-49 Jeepster
FREE SHIPPING ON TRUCK FREIGHT - COMMERCIAL (BUSINESS) ADDRESS REQUIRED
| Part # | Price |
|---|---|
| 641145 | $4,795.00 MSRP: |
$4,795.00
MSRP:
Product Videos
Questions & Answers
Do you have any recommendations for a engine rebuid shop for a 1943 Willy's Jeep in the Bakersfield, CA area?
Give us a call and we can see if we have anything for you.
We can help. Please email mike@kaiserwillys.com
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We can help you with engine overhaul kits. See link: https://www.kaiserwillys.com/products/complete-engine-overhaul-kit-fits-54-64-truck-station-wagon-with-6-226-engine/
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No, but we can help you rebuild yours. Please email or call us toll free and we can help.
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For any inventory related questions, please give us a call.
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Please give us a call for availability questions.
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Email mike@Kaiserwillys.com and we can help you out locate.
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Please email mike@kaiserwillys.com to help out on this.
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Give us a call and we can point you in the right direction.
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Please email mike@kaiserwillys.com for help.
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Please email mike@kaiserwillys.com on.
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They are two different blocks for L and F heads.
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Please check with us in 2023
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Check in with us early 2023
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Please read our extensive links on the blocks and their manufacture in the links in the item description. Thanks!
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Email mike@kaiserwillys.com to help out.
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Possibly in 2022
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Sorry, not at this time.
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We can give you some numbers for salvage yards. Email mike@kaiserwillys.com
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Gear driven. Thanks
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L head the flat head.
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They are in development for next year. But in the mean time we can help you with good used if like.
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Right now we can help you with good used for the 6-226 engine
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We will do a big announcement on them. Sign up for our newsletter online. Thanks!
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See our links on information on the item itself. There are two links on the item 641145 about it. Please let me know if you have any questions.
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Please check back in with us around the beginning of September. We should have, at least, some sort of date by then. Thanks
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There has never been a cracking issue on these new blocks. Possibly on the originals Willys made but not these.
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10W30 is what was originally used.
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Sorry, nobody is doing that currently.
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Sorry, they are not able to do this.
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Those hopefully will be finished in development next year.
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Yes, they will have hardened seats.
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Yes, they will have hardened seats.
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Yes, it would fit under the hood of a CJ-3B since this is a flat head and the CJ-3B had a high hood to accomodate the 4-134 F head motor.
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Yes, we are currently working on it now. We are hoping to have it ready by the end of the year. Thanks
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We typically use non-detergent oil - 30 or 40. Thanks
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This price is as shown with the information above. It is a bare block.
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This is a bare block motor. We can build it up with an engine overhaul kit and anything else you need. But the assembly of it you have to do from your location.
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No, it does not have to be bored. See spec sheet and links above. It is std. size 3-1/8"
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These blocks weight approx. 88#. Thanks!
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We have blocks, engine overhaul kits, crankshafts, camshafts, ect. Please call and ask for Mike M. I can work it up for you.
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Please call us toll free. There are a lot of variables there depending on what all you really need and currently have.
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We can get those good used. Please call us toll free. The A1463 should bolt up as well.
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They are working on it now.
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Please email mike@kaiserwillys.com your full shipping address and the part number and quantities you need and we can quote you out. Thanks!
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Typically they were black if civilian and OD green if military.
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Yes, it will. This is a 4-134 L gear block.
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There is only 1 camshaft bearing on a 4-134, they are separate part number: 645595
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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.
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