mercruiser info for jeep

I did a search and could not find anything that had the total answer.

I am looking at swaping an mid 70's Mer cruiser 140 hp four cylinder into a 1952 CJ3A. The only problem is locating an intake and exhaust maniforld or header for this engine. The marine items will not work in an automobile.

Any assistance would be appreciated.

Mike

 

I bought a set of manifolds from a Hyster forklift for mine, not cheap at $150, but the Chevy II's and DJ-5's have dried up around here.
Sullivan made air compressors that use the same engine, updraft carb and straight up exhaust like a tractor puller if you want different.

 

How about a Chevy Celebrity or similiar gm car with the 2.5 I4. Isn't this basically a 153?

 

No, different engine. The 153 is a Chevrolet design while the 151 is a Pontiac design iirc.


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Too bad. There's a ton of those 2.5's out there.

 

Just FYI, the 153 is 2/3 of the Chevy 230. Both the 153 and 181 are part of the 192 230 250 292 family of Chevy inline engines. Search for "Vortec 3000" (3.0L = 181 cid). The 181 was sold and an industrial and marine engine up until a few years ago. There may still be parts available OTC (ie the Hyster manifold).

 

How about a NEW Vortec 3000 with MPFI?!

http://www.dlcpower.com/images/2009_3000_Industrial.pdf

 

There are at least two different cylinder head port designs, an eight and a five I think. Make sure the manifold(s) match your configuration.
A lot of the Hyster forklifts were also propane powered if that interests you, salvage guy would have sold me the complete fuel setup for another $300.

 

I have one of these engines installed in my 2A. Be aware that the intake/exhaust manifolds from the Chevy II's, Postal jeeps, etc. will not cover the larger ports in the 3.0/181" 140 hp cylinder head. I was able to adapt these manifolds via an adapter plate fabbed from 5/8" X 2" or 2 1/2" bar stock with the gaskets from the 153" and 181" manifolds on either side of the adapter plate. Longer mounting studs will be required.

Most of the boat engines I looked at had a front sump oil pan and pick up tube, which will hit the front axle of the jeep. Car applications should have a rear sump pan. Also if you can source the OMC version of this engine, they are usually fitted with a flat flywheel that will have threaded holes for a pressure plate. My Mercruiser did not have this style but a standard small block chev flywheel will work.
Happy hunting.

Otto

 

do you have any photos?

Mike

 

I have some taken during that part of the project. I'm new at this but I'll give it a go.



The adapter looks a little crude in the photo, it was surfaced at a machine shop on both sides after the pictures were taken. The one photo shows the manifolds with the casting numbers highlighted and also the number on the Monojet carb should be visible. This engine fits like it was made for an early low hood jeep. It also has the longest stroke (3.6") of the modern 4 cylinder engines making it ideal for a jeep.

Hope this helps.

Otto

 

Nice adapter. I have pondered that as a viable solution as well and seems easiest of all. I think I could do a pretty good job of making an aluminum one myself. My 3.0 Mercruiser did have the flat flywheel with threaded holes for pressure plate. I believe it is an '81.