My 98 disco with a 4.6

[ColoDisco]

As some of you may know I work at JC's British & 4X4 as a tech. Last October I had the opportunity to buy a lifted 98 Disco with a blown engine. The engine blew in spectacular fashion twisting the #7 and #8 rods around the crankshaft and blowing a hole in the side of the block. Talking with Jeff we hatched a plan to install a 4.6 instead of just swapping the 4.0 for a good used 4.0. We had a good used 4.6 from a range rover on the shelf but he knew it had a cylinder liner knock. We tackled the pinning procedure while it was on the stand. Long story short I fired it up tonight and it runs beautifully. On with the pics!

When I bought it:

Hole in block.

Bits of engine:

Rebuilt heads:

Pinned sleeves:

Power washed ready for install:

Engine ready to install:

Installed (excuse the belt diagram, had to use a used radiator from another vehicle as mine was falling apart)

Just have to add the finishing touches.

 

[sedat]

So whacha think of the power?


btw: if you have autologic, reset it for the 4.6, if it throws a fit about electronic trans, set it for manual.

 

[ColoDisco]

We do have auto logic. How do you reset it? I have not driven it yet as I just started it and still have to reinstall the hood.

 

[roverandom]

Nice. Love to hear more about what is involved in "pinning" the sleeve?
Cheers
Matt




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[Some Dude]

this is an excellent way to solve the leaky sun roof problem.

 

[ColoDisco]

this is an excellent way to solve the leaky sun roof problem.

Now your talkin! :snorkel:

 

[sedat]

under engine management, gems, iirc its settings or options. click more. Its been a few months since I've done it.

 

[roverandom]

Not sun roof protection. It's a modern take on the classic Series safari roof!


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[ColoDisco]

Drove it home tonight, amazing power compared to my 95.

Thank you Sedat for the heads up on switching in auto logic.

 

[sedat]

anytime! makes you wish all the discoveries had it optionally.

Makes a night and day difference with the engine that I built. In both of the trucks it was installed in.

 

[ColoDisco]

I am seriously entertaining doing the same swap in my 95. It just drives so much smoother than the 3.9. May have something to do with the Gems vs the 14CUX.

 

[Jeremy2013]

I also put a 4.6 from a range river in my 01 disco. What a difference! Lots more power. It was an easy swap. Then i sold the disco to my brother... he is a lucky man.

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[jeff_wright]

Great find!

btw: if you have autologic, reset it for the 4.6, if it throws a fit about electronic trans, set it for manual.

What does the reset do?

 

[sedat]

different ignition maps.

 

[pacopico]

Acceleration data from my 4.6 swap, data taken via "dynolicious" app for iProduct:

98D1, 235/85R16 tires, stock gears, no "armor", roof rack, etc. Normal load of driver + 100lb of stuff.

Original 4.0 W/190,000 Miles:

0-60 = 12.62 sec.
1/4 mile = 19.08 @72.7mph
Calculated 170HP

"New" 4.6 w/89,000 Miles (replaced timing set and spark plugs at install, otherwise used, as-is engine):

0-60 = 9.98 sec.
1/4 mile = 17.64@78.3
Calculated 198HP

Then I dragged a co-worker in his commuter 2009 Ford Fusion 4-banger, auto...he beat me by a car length. Regardless of the 4.6 it's still SLOW.