Kia Carnival Engine Change

cpapashley · 04-30-2006, 06:35 AM

So this is a question to all those technically minded out there. A friend asked me today what was the exact difference between the pre 2003 Kia Carnival Engine that had all the problems and those after this date.

Well apart from saying they fixed the problem, I could not answer well enough for his technical mind. So I thought I would ask here.

So the question is.....

What was changed so the cylinder liners would not continue to have the problems?

Why can one of these engines not fit into the pre 2003 Carnivals (mine is 1999)?

Thankyou in advance to all those technically minded. (My friend is a Diesel fitter and turner so don't hold back on the technical jargon)

Ashley

Esses · 04-30-2006, 08:32 AM

CP, I don't know the specific answers to your questions but reading between the lines of the many threads on this subject I do have a couple of theories.

1/ There are Gen I & Gen II versions of the Rover KV6. Maybe the later engines are Gen II which is supposedly much better than the 1st version.

2/ The liner problem seems to be caused by Kia "decking" or machining the liners on a level workbench (very generalised terms but hopefully you get what I mean) rather than actually IN the blocks after fitment. MAYBE they're now doing it the correct way?

3/ Apart from some detail differences between early & late (such as s/steel headers vs cast-iron manifolds) I couldn't see any real reason why the later engines couldn't be retro-fitted. I suspect that this is what is happening with the replacement engines. The blocks, anyway. Maybe Kiamech has some insights on this?

Murphwiz · 04-30-2006, 11:28 AM

Is the problem fixed?
Not sure, they sell only a handful of the 2.5 V6's here thankfully.

The engines should be able to be swapped, as the engine is largely the same throughout the years.

cpapashley · 04-30-2006, 07:25 PM

Hi Esses,

The theory of the Gen II engine certainly sounds feasible as the Local KIA Service manager said the engines were different to the first run of engines. While the second theory makes some sense as I remember the other thread talking about that, but find it hard to understand then why my engine has had problems again as I would have though reconditioned engines would have been done correctly.

As far as retrofitting it seems strange that the service manager was adamant I could not go down this path. When I was talking with various wreckers here in Queensland a number said they have had the newer engines returned by those trying to fix their dead KIA's as they don't fit.

So I am a bit confused. Maybe it is the headers that do not fit?

Although I agree with you Murph that one would think it should be able to be swapped as they look extremely similar from a layman's point of view.

Thanks for the info, Maybe Kiamech can shed some more light. This will also give me something to talk to the service manager about.

Ashley

Classic boy · 05-01-2006, 02:18 AM

IMHO, they current KV6 engine still has HG problems just not as many leak. Obviously the quality control on the early engines meant the liners did not have enough nip on the HG, which subsequently leaked after 40K plus kms.

My belief is they probably improved the assembly quality on later engines to ensure enough nip on the HG but they still leak but not as many and it takes more Kms.

They probably improved the HG material as well to make it more resistant to leakage.

The basic core engine is the same item between early and late models notwithstanding the above, but it may have had alterations for different accessory lay out or vendors.

cpapashley · 05-04-2006, 06:10 AM

Thanks classic boy,

That is my understanding that if the liners are sitting correctly they will certainly guard against the gasket failure. Interesting that there would be other third party items changed. Especially the headers and manifold, which could lead to different pressures / heat levels being experienced in the head/piston/valves.

I am still unsure if a repaired engine will not have a tendency to fail in the liner/gasket area. Due to heat issues.

Do you know of later engine failures? would love to know more about this.

Ashley

Went searching on this site and found the reference to a 2005 model engine spitting the dummy. Certainly seems less prevalent but sadly still a problem.

cpapashley · 05-05-2006, 06:15 AM

So now that I have some information, does anyone know if the

2.7l Diesel engine from the pregio in Australia will fit into the Carnival. I just wish we had the option for the 2.9 Diesel engine over here. Does anyone know anything on this??

Ashley

Murphwiz · 05-05-2006, 03:06 PM

Unlikely, the 2,7 is a north south engine, sedona needs east west.

cpapashley · 05-06-2006, 05:37 AM

Quote:

Originally posted by Murphwiz@May 6 2006, 05:06 AM
Unlikely, the 2,7 is a north south engine, sedona needs east west.

Quoted post

Thanks for that Murphwiz, you are always so full of wisdom.

Any other suggestions for a replacement engine????

Ashley

Murphwiz · 05-06-2006, 09:06 AM

obviously nothing is gonna just slot in like the oem V6..
Maybe you can get a 2.9 diesel to fit?
May need a diesel subframe?