Engine swap Capri-gctid809282

[Guest]

Hello

I have a 1992 Capri with a problematic engine and have found a replacement engine but I'm not sure if there is a difference between the 1992 mercuiser and the 1999-2009 me cruiser engine? Can I swap them without any major issues or is this a bad idea??

thanks!

[Chief_Alen]

What engine ?

[Download_Complete]

And define "problematic". IS the engine toast?

[Guest]

The current engine is a Mercruiser 3.0L from 1992 and the ne one is a Mercruiser 3.0L made between 1999 and 2009.

[Guest]

It does run somewhat but heats up real fast (or at least looks like it) and does a full stop when revving it. Changed a few parts but it's leaking near the manifold now... A local shop needs to take it a part to figure out whats wrong but the cost of that, parts not included, are way over the top. A refurbished engine might be less 'problematic'... well I hope so.

[Chief_Alen]

Below is copied and pasted her from another website i used to post to:

Topic: 3.0L (120/140) Replacing Your Marine Engine Longblock

Question: How do I replace my damaged longblock with a new or remanufactured product? Response:

Since the 3.0L engine is not used in automotive applications there aren't enough cores to support a good remanufacturing option. We only supply new longblocks which do not require a core deposit. The other benefit of the new engine is that it includes the new electronic ignition system that GM released in the mid-90's to address several of the ongoing quality issues that plagued this engine over the years.

There are two (2) solutions to this common problem of replacing teh 3.0L marine engines, however, there are many factors affecting the final direction to proceed with. Up through 1991, the engine was produced with a two-piece rear main seal and a 12-3/4" flywheel. Then in 1992, the engine was produced with a single piece rear main seal. Finally in the year 2000, GM upgraded to a 14" flywheel which is how the engines are currently being produced.

Solution 1: Marine Engine Repair

If your existing engine was built before 1992, you will need a 12-3/4" flywheel that matches the two-piece rear main seal, so that you can re-use your existing coupler and starter.

If your engine was built between 1992 & 2000, you can re-use the flywheel on your existing engine.

If your engine is not an OMC Cobra engine vintage, it will require that your existing coupler be re-machined to allow it to fit up properly to the 1 pc rear main seal configuration 12-3/4" flywheel. We can help with this as well.

If your engine was built after 2000 you can use the flywheel that comes with the new or remanufactured longblocks. We have an option for a 12-3/4" flywheel to go on this engine which is $189.

If your engine was a large port engine, or the 120 hp built up until 1994, you will also need the exhaust manifold conversion adapter which converts from the old style oval port head to the higher hp rectangular port head, which is the only head being produced today.

#gm181base (1991 - Current Engines)

Solution 2: Marine Engine Repair

Another option is engine conversion kit that can be used with your existing Mercruiser or OMC Cobra/Volvo SX 3.0L engine. These kits include an engine, flywheel, exhaust manifold gasket, fuel pump, and coupler as a complete kit.

#301201P_2M - Mercruiser (1968 ÔÇô 1990)

#301201P_2 ÔÇô OMC Cobra/Volvo SX (1986-1990)

This is a large amount of information to digest and may be a little confusing as these blocks are very hard to come by today, and versus remanufactured products having a new 3.0L longblock is always a better longterm option. In our opinion the best quality option is a new 3.0L straight from GM, which has the 14" flywheel.

Select the following links to view the mentioned products:

So in my opinion a new engine is the only way to go, Michigan motors and other sites sells, complete, long blocks and short blocks, me i would go complete drop in unit.

Me i would go with Michigan motors.

Myself i found a 140 / 3.0l for 400 dollars, i needed to take the whole boat with the trailer, craigs right now has many 3.0l on sale right now, from 400- 1,000.