Advice for Rebuilding 3.5 - Defender Source
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  #1  
Old February 28th, 2015, 03:48 PM
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Nick Engelbrecht
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Advice for Rebuilding 3.5

I recently purchased a 1985 110 CSW with a 3.5L V8 that was replaced in 2009. The guy I bought the 110 from is also giving me the original 3.5L that came with the truck in case I wanted to restore the truck to original spec, which I think I will have to do in order to import it back to the US (I am US Navy stationed in the UK and my tour ends next year).

My question is whether I should rebuild the engine as a 3.5L 8.13:1 CR, upgrade the CR to 9.35:1 or do the conversion to 3.9L. Any thoughts on the subject?
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  #2  
Old February 28th, 2015, 05:04 PM
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Quote:
Originally Posted by nengelbrecht6 View Post
I recently purchased a 1985 110 CSW with a 3.5L V8 that was replaced in 2009. The guy I bought the 110 from is also giving me the original 3.5L that came with the truck in case I wanted to restore the truck to original spec, which I think I will have to do in order to import it back to the US (I am US Navy stationed in the UK and my tour ends next year).

My question is whether I should rebuild the engine as a 3.5L 8.13:1 CR, upgrade the CR to 9.35:1 or do the conversion to 3.9L. Any thoughts on the subject?
US import law is that it has to have the original engine type it left the factory with, not the exact engine. Engines die and replacement is allowable. As long as you have a carbed v8 under the hood it will be fine. Adding fuel injection however would be a problem.
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Old February 28th, 2015, 05:12 PM
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....that's odd. I posted here about an hour ago, but it's gone now.

Anyway. What Doug said.

I also added that once you get it here, don't waste your time with the 3.5. I was recently looking into a 4.2 upgrade, and I think it would be a great way to improve the vehicle for not a whole ton of money.
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  #4  
Old February 28th, 2015, 05:13 PM
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Thank you for that information. I was getting conflicting information from folks here about it. My belief is what you have confirmed, but it's funny all of the "experts" that want to provide their input. One person even told me you can't import a RHD into the U.S.
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Old February 28th, 2015, 05:30 PM
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There are many arm chair experts on the subject with zero actual experience other than having read drivel on various forums.
I import about 100 trucks a year.
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Old February 28th, 2015, 05:34 PM
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Quote:
Originally Posted by nengelbrecht6 View Post
One person even told me you can't import a RHD into the U.S.
Quote:
Originally Posted by Uncle Douglas View Post
There are many arm chair experts on the subject with zero actual experience other than having read drivel on various forums.
I import about 100 trucks a year.
Uncle Douglas is the only expert you need to consult.
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Old February 28th, 2015, 05:34 PM
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Quote:
Originally Posted by RBBailey View Post
I was recently looking into a 4.2 upgrade, and I think it would be a great way to improve the vehicle for not a whole ton of money.
Everytime I drive ours it puts a smile on my face.
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  #8  
Old February 28th, 2015, 06:59 PM
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4.2 sure, 4.6 why not? 3.9's are cheap and everywhere.

But don't dismiss the 3.5 completely. It is a fine motor that you can squeeze a little more out of with the higher compression ratio heads, taller cams, and 4 barrel carb.

If your Defender is not too kitted out and not too heavy .... You will probably be fine with the 3.5.

But bigger is always bigger and no one can argue with that.
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  #9  
Old February 28th, 2015, 07:02 PM
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My 4.6 is being installed now. I ordered it before I took delivery of my 3.5 110. I drove the 3.5 for months and I honestly feel kinda foolish pulling it out. It runs great. Plenty of power for city driving. Runs on 87 octane. It's like free mileage.

My 3.5 and the transmission will be put up for sale soon.
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