V6 Heart Transplant

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Nodge68

Well-Known Member
Posts
32,765
Location
Cornwall
This won't be a "how to" guide on changing a V6 engine as I just don't have the time but I'll include some usefull hints and information for anybody that might be mad enough to contemplate doing it themselves.
A bit of background info on the car. It's an a later 2001 but on a Y plate Fully Loaded ES that has covered just 31K!! I bought it as a local load lugger for winter and towing duties. I've had Freelander 1.8s for the last 6 years and found them generally pretty good. The only complaint with the 1.8 is it's lack of power for it's weight Especially as my summer car is a tuned 200bhp MG ZS180!
As i'm planning on selling on the ZS to reduce insurance costs but as I love the KV6 engine I thought a Freelander V6 would be a kind of best of both worlds kind of car. After a short search I found one local with an engine problem. The car was a good condition very low miles but was loosing it's water into the sump. Knowing lots about the KV6 I guessed it was probably suffering HGF. When I looked at the car a noticed it had already had a set of new HG's as well as countless other parts. The owner told me he had had them done less than 2K before but they had failed again!! So we agreed a price and I took it off his hands.
Not wanting to waste my time and money on doing the HG's again I decided it would be easier to swap the engine, so after a short hunt I found one from an MG ZS180 which should do the job. The long term plan is to correctly rebuild the original V6 and if I have the time, money and inclination maybe try to convert it to a manual as the auto hampers this engine somewhat.

So that's where I am at the minute. There is a big hole where the V6 once sat. But just getting the this point is a pile of work.

This is where the V6 once sat.
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This is the replacement engine. Note the cam pulleys are marked up ready for the new belts!!
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So what is involved in getting the V6 out? A lot is a good description!! Annoyingly there are many things in the way of various fixings so these need removing or moving out the way first.
First up is drain everything. Water, engine oil, gearbox oil and the IRD.
Next i stripped the engine and the surrounding ancilleries includung the air filter assembly, inlet plenum, alternator, PS pump, rear 3 Bremi coils, complete engine harnes, the starter, the upper bell housing bolts, the battery, the battery tray, cruse control actuator, all the pipes off the thermostat and heater and move the brake resavour out the way.
Support the body at the jacking points so the front wheels can be removed.
Pop off the Off Side lower ball joint and steering joint so the driveshaft can be removed from the IRD.
From under the car the front exhaust manifold needs to be removed completely then the exhaust collector pipe needs to be unbolted from the rear manifold and the joint to the exhaust system. To save time i simply moved this assembly out the way leaving the O2 sensor connected.
The front prop joint with the IRD is next to be removed, the shaft can be slid to the right and rested out the way on the subframe.
The IRD is the next thing to unbolt and move ouy the way, it's bolted to the gearbox with 4 bolts but is also supported on a bracket mounted onto the engine front plate at the other end, i did'nt remove IRD but did remove it's bracket. The IRD is clearly visible in the picture. The IRD is moved purely so it's possible to gain access to the driveplate to torque converter bolts, but moving it out the way also improves access to the rear bell housing bolt and exhaust manifold to head bolts, which can be moved out the way.
Next i removed the cover plate to gain access to the 4 driveplate bolts via the access hole an the rear of the bell housing.
Now i support the gearbox bell housing to stop it falling when the engine is removed. Once the weight is taken it's possilbe to remove the remaining lower bell housing bolts and unbolt the AC compressor.
At this point the engine is ready to be removed after a quick double that everything is free.
It's a pain to get the engine out as the gap between the bulkhead and slam pannel is'nt large enough to allow the engine to be removed strait up so needs to be lifted up front end high to get it out. The way i did this was lift it with the diagonal lift points so the front engine mount can be completely removed, the engine is then slid off the gearbox lugs so it's free to move about.
Next i placed a trolly jack under the sump to take the weight so i can move the rear lift point to a bolt in front of the alternator bracket, this then lifts the angine at the correct angle for it to come out the engine bay and moved clear or the car!!
 
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Wow thats fantastic. :)

Can we have a pic of the vis motor/case/bits inside? Thanks.
 
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Just been swapping a few parts over from the old engine onto the replacement this includes the sump and the oil pick up/ strainer. I thought I'd give it a check before fitting it and i'm glad I did. This is what the gause had collected!!
20120910_213307_zps26cb6f72.jpg

Makes me wonder who built this engine?
 
I'd be shocked to find swarf in mine. But I'd be even more shocked to find a pen
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Hi Nodge68

If yer still got the v6 engine on the stand can we have a pic of the fly wheel side? I’m interested in what the fly wheel looks like as my oil seal behind it is said to be the cause of a small engine oil leak. LR spotted it when replacing my auto but didn’t think to mention it when they could have easily changed it. But they did offer to take it all out and split the engine/auto to replace the crankshaft seal at a later date if it got worse, at my cost. Seal was £35 at the time. :doh: :mad:

Also can I have a pic of the splines on the ird which connect to the auto?

Thanks.
 
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Here's the IRD input spline.
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I'll take a photo of the crank oil seal when I can get a really stubborn bolt out!
 
This won't be a "how to" guide on changing a V6 engine as I just don't have the time but I'll include some usefull hints and information for anybody that might be mad enough to contemplate doing it themselves.
Many thanks for the info & pics.
Our V6 virtualy broke my heart! I felt I was the one who needed the transplant. Very interesting to see how much work we would have needed to do to save it - the v6 not my heart!
We now stick to TD4s.
 
This won't be a "how to" guide on changing a V6 engine as I just don't have the time but I'll include some usefull hints and information for anybody that might be mad enough to contemplate doing it themselves.
Many thanks for the info & pics.
Our V6 virtualy broke my heart! I felt I was the one who needed the transplant. Very interesting to see how much work we would have needed to do to save it - the v6 not my heart!
We now stick to TD4s.

To be honest the KV6 is a lovely engine which I actually enjoy working on!! It's not nearly as complex as is perceived. It makes good power for it's weight too. I'm in the process of fitting one into a classic car as I like them!!
The only Fl I'd have is the V6 even though the V6 is'nt a fan of the Freelander!!
 
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The replacement V6 is comming together slowly. I've been held up by the O rings and bolts for the cam pulleys taking an age to arrive but they are here now and the cam pulleys are now correctly tightened!! I've fitted all the cam covers and front plate/ mount bracket. The oil pick up is on there too. So that leaves the sump to clean and fit, the oil cooler to flush through and the drive plate too
Front assembled. Sump to do next.
20121006_123947.jpg
.
 
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Here's one for Hippo!! Hope it helps
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As for the transplant. I'v got a window in the weather so hope to get most of it done today!!
 
Well it's been a few days of rain but I've finally got a dry spell so I've been able to get on with the re-assembly. The replacement engine is in.
20121009_133507.jpg

This takes lots of jiggling to get it in but it's there now. The drive plate it bolted to the torque converter, the IRD is back on the box, the exhaust manifolds are bolted to the heads, and the collector.
I've discovered that the water side of the oil cooler is blocked so i'v linked it out for the moment until I can work out how to flush it .The Rhs drive shaft is back in the IRD. So nearly there, just a few bolts to check some cooling pipes to re-connect and a few sensors to get onto the correct harness plugs. The trany needs new fluid so I'm going to give Carlube ATF-U a go. The engine still needs oil which is going to be just a cheap one to use as a flush. Oh and the IRD needs fresh lube too! Hopefully not long till I can fire her up!!
 
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Now i'm basically finished putting it back together I discover it's leaking water into the V section :( I fitted new stat O rings too!! Oh well another pile of work to do :(
 
Ok a little update on the V6's progress as i'v not had the time or weather lately. I got the new stat out as it was loosing water into the "V" I was a little surprised to find a hole in the side of the casing! I had a poke and scratch at the hole and now I have a big hole!! The plastic is eggshell thin so possibly got damaged when I fitted it??
So another has been ordered. Before I took the leaking stat out a wanted to fire the engine up as it came to me as working but I'd never heard it run. I filled it with oil and primed the oil filter too as I always do on the V6. I fitted my trusty Remote Start to the battery and starter so I could spin her over to make sure the oil system had pressurized minimizing bearing damage. I fitted an oil pressure gauge in place of the oil pressure switch so I could see the pressure build up. As she wound over I noticed one cylinder sounded down on compression as the cranking speed increased for one cylinder. I checked the pressure and was pleased to see a good 30psi which is fine for a KV6 at cranking speed. I was a little worried about the low compression and had visions of having to pull the heads off to fit new valves. This thought was based on the incorrect markings I'd found on the cam pulleys. I thought that maybe a valve has hit a piston tipping it enough to leak.
I decided to give her a run anyway. I made sure the water was well up to level, refitted the starter wire and turned on the ignition, I heard the fuel pump prime so switched it off again and bled the fuel rail with the valve in the end of it. (why it's not self bleeding like all other KV6 powered cars is beyond me). With the fuel system bled I figured it's not going to damage a possibly already damaged engine, so I turned the key, she wound over for 2 or 3 seconds before bursting into life!! It sounded a little uneven and was tapping from one follower. I gave her a minute to run then gave the throttle a gentle push, she revved up a little lumpy and was still tapping to, thoughts of a bent valve were bouncing around my head :( . All of a sudden the tapping stopped and she ran smooth as silk!! So I gave her another rev, this time she picked up smooth!! :) so maybe the engine is ok and it just had an empty follower. I let her get up to temp to make sure everything was ok
The stat was leaking but only a tiny bit. I hooked up my OBD2 reader to the port to monitor the live data. I noticed the cooling fans don't start to run on slow until the engine was at 102°C !! I feel this is to hot and may have been a contributing factor to HGF the old engine had suffered for the second time in 1500 miles?? That and the split in the header tank. So once the next new stat is fitted and the water stays in the engine I'll get the old scope on the PWM signal from the ECU of which there seem to be 2?? I'll also test and maybe replace a few components in the fan driver module .
As a side note does anybody have an early V6 wiring diagram?
Thanks
 
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Excellent pic's and write up :praise:

Looks like you're going to be kept busy with calls for pic's of this & that !!

Well done-I shall be following this thread-a picture speaks a thousand words and beats RAVE etc. anyday !!
 
Many thanks for the very interesting up date.
Although I have been badly bitten both mentally and financially from my experience with a V6 I do enjoy reading of your experience with them. Thank you. JonFre.
 
Many thanks for the very interesting up date.
Although I have been badly bitten both mentally and financially from my experience with a V6 I do enjoy reading of your experience with them. Thank you. JonFre.

Thanks for the comments ;)
I'm lucky in as much as I do the spanner work myself and have had many years experience on the KV6 in various vehicles. The Freelander is a little different to all the other KV6 powered cars in that the cooling system on it is not really up to the job in hand especially with all the other coolers plumbed into it. I think this is one area that a bit of careful redesigning might not go ammis although it would be good to get the fans running correctly!! If I still can't get the result and reliability I need from the cooling system then I think it would be prudent to fit a more conventional fan thermostat to control the fans rather than relying on the fragile PWM converter.
 
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