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Remanufactured High Performance Jeep 4.0 242 Engine


Product Description

This engine is a modified 4.0 242 cubic inch Jeep engine. We build this for customers that want more performance than stock but don't want to move up to a Stroker. The engine is built with the compression ratio set at 9.25 to 1 with the same valves, springs and retainers we use on our stroker engines. We have several camshafts to choose from depending on the Jeep and how it's used.

Titan Engine has been building high quality remanufactured engines at the same location since 1974. Titan is a family owned bussiness who's utmost concern is building a superior remanufactured product. We build stock Auto and Truck engines along with Performance Engines,Classic Car Engines, Marine and Off Road engines. We also sell high quality engine parts and complete engine rebuilding kits and can supply engine parts for most applications. Our engines are sold exchange, the core must be in rebuildable condition for the core charge return the core charge on this engine is $350.00. There are 18 steps in building a proper remanufactured engine please take a minute to look at these steps.

1. The first step is to dissassemble the core engine and visually inspect the Cylinder Block, Crank Shaft and Cylinder Head castings. If they pass this step they move on to the next step the Thermal Cleaning.

2. Thermal Cleaning in this step the dissasembled Cylinder Heads and Block Castings go through the first cleaning step in which they are heated in a flameless oyxgen depleated enviroment to 650 degrees to prevent cracking or warping while burning off sludge, carbon and oil residue.

3. In this step the Cylinder Head and Block Castings are sent to a Steel Shot Blast Machine where they are blasted with Stainless Steel Shot pellets that leave a like new finish on all surfaces of the Cylinder Head and Block castings and stress relieves the castings.

4. Now we magniflux the Cylinder Head and Cylinder Block castings to insure no cracks or casting faults went unnoticed.

5. Block Preperation in this step we remove any broken bolts and chase all threaded holes, if any problems are found they are repaired at this point. All Oil Galleys and passage ways are brushed clean and the Cylinder Head castings and Blocks are sent back to cleaning.

6. The Block and Cylinder Head castings now receive a high pressure wash in a Pressure Wash Cabinet that removes any particals from the earlier steps.

7. Line Hone in this step the main bearing bores are align honed which insures proper main bearing journal size and alignment.

8. The Cylinder Block is now bored to within .002 using a Rottler Boring Bar to insure all cylinders are a consistant size.

9. We deck the Block using Rottler milling machine equipped with CBN cutters to insure a superior head gasket sealing surface.

10. Now we hone the cylinders to the final bore size and finish using a Sunnen power hone.

11. The engine block goes back to cleaning receives a final wash, is put on a engine stand and sent to assembly.

12. Cylinder heads recieve a 5 angle valve job using a Serdi seat machine, surfaced and assembled.

13. After a Berco crankshaft grinder is used to machine the crankshaft to exact size the oil holes are chamfered, micro polished  and cleaned.

14. We resize the connecting rods on a Sunnen rod machine to exact size and fit the pistons to them.

15. The engine is now assembled using the highest qaulity componets by highly skilled craftsmen taking utmost care assembiling the engine.

16. After assembly the engine is sent to Quality Control where the engine is run on a Sim Test Machine where we check the engine for compression, oil pressure, valve adjustment and drag.

17. The engine is painted and given a final inspection.

18. The engine is now shrink wrapped, pallitized and made ready for shippment.


On May-01-07 at 16:03:23 PDT, seller added the following information:

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Product Reviews

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  1. Great Engine and runs awesome so far! 4 Star Review

    Posted by on 25th Jan 2018

    Engine came in great condition and we had no problems with the installation. The staff were super good at responding to my emails and questions through the whole process too. So far I’ve put 500 miles on it and have had no concerns or issues. Only nit picky thing was that the engine was pretty dirty in some spots underneath the paint. There were several locations around the Engine I had to scrape off and repaint where old dirt or rust had accumulated and just got painted over. Overall a great engine, no problems to complain about.

350.00 LBS
$250.00 (Fixed shipping cost)