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  #1  
Old April 8th, 2017, 09:53 AM
agopsill
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Andrew Gopsill
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Engine swap MOD

I bought an '86 90 MOD diesel in the UK, shipped it over to florida. seemed like a nice and straight truck. Drove it down to get the VIN checked, and bang, engine blew. Valves smashed to pieces.
So I bought a 3.5 V8 to install, with the 5 speed transmission (I believe it;s the one installed in the Santanas).
Is this a pretty straight forward swap? Or will I need to fabricate parts to make the V8 fit?
Thanks for any help.
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  #2  
Old April 8th, 2017, 09:55 AM
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Andrew Gopsill
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  #3  
Old April 8th, 2017, 10:29 AM
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Robert Davis
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You'll need to make motor mounts.
I would be more inclined to install a 200TDI that will bolt right in.
If you have all the parts a 200TDI swap can be accomplished in a weekend.
The V8 conversion will take a lot longer.
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  #4  
Old April 8th, 2017, 10:55 AM
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John B.
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As Robert says, you will need to remove the existing engine mounts and weld in new ones. Beyond that, you will need everything from the 3.5 truck like radiator, hoses, intake, exhaust, etc... Expect 15 mpg at best, so range is pretty short with a 90.

Not sure if you need trans tunnel mods with the LT85, but probably.

As to "valves smashed to pieces", I would be very suspect of that diagnosis. Not even sure it is possible in any way to damage a valve on a 2.5.
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Old April 8th, 2017, 10:57 AM
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Robert Davis
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Quote:
Originally Posted by Red90 View Post
As to "valves smashed to pieces", I would be very suspect of that diagnosis. Not even sure it is possible in any way to damage a valve on a 2.5.
Yes I thought the same thing, John.

Andrew:
Why not have the shop show you the damage, take and post some photos here.
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Old April 8th, 2017, 11:12 AM
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Andrew Gopsill
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Heres how it looked
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Old April 8th, 2017, 11:25 AM
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Like said. Tdi way to go. Did this a few times on MOD truck, sourcing a known good 200 tdi package was hardest part.
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Old April 8th, 2017, 11:31 AM
agopsill
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Andrew Gopsill
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The 200tdi engine is way too much money for a used unit. The V8 and transmission cost me $500 and was locally available. I know the 200 swap is easier to do, but none were available near me . So the V8 won by default.
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  #9  
Old April 8th, 2017, 08:20 PM
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Raub A.
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Andrew, you killed a 2.5 n/a you are my hero! As others have said the 200 is a weekend while drinking beer. Your v8 will be more involved. Good luck and keep us posted as you go.
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Old April 8th, 2017, 08:23 PM
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Will do.
The car covered 16 miles before it disintegrated. Brilliant!
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  #11  
Old April 8th, 2017, 10:20 PM
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Originally Posted by agopsill View Post
Will do.
The car covered 16 miles before it disintegrated. Brilliant!
I suspect you didn't kill it, just buried it. I think you bought it dead!
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  #12  
Old April 8th, 2017, 10:47 PM
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Scott Preston
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Not a fan of a V8 land Rover but understand the appeal of a low cost swap. Agree with the above. V8 install is more involved but not a crazy install. The LT95 is pretty tough and will work OK behind a V8 although it will sound like you are driving a bag of ball bearings. You may also want to consider swapping out the rear axle. The rear drum brakes on a MOD 90 are really not up to a V8.

good luck with the swap!
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  #13  
Old April 9th, 2017, 07:13 AM
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Quote:
Originally Posted by agopsill View Post
The 200tdi engine is way too much money for a used unit. The V8 and transmission cost me $500 and was locally available. I know the 200 swap is easier to do, but none were available near me . So the V8 won by default.
Quick and Swift will not be how you will describe your first Tdi conversion if you count the time to source everything you need and address everything you should seriously consider while the engine is out. I'm assuming of course you don't own a shop, you're a better than average mechanic and you will be rolling around on the floor of your garage or your driveway like some of us have done.

No different than painting a vehicle. The end result depends greatly on the experience, prep and execution.
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