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#1
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how much difference does turbo make
We have found a 1985 300 D, appears in very good shape, BUT is a NON-TURBO. Curious to how much of a difference this makes. Could it be converted to a turbo or is that cost ineffective.
114,000 miles original owner Have to travel 2 plus hours to see. What is your opinions. Thanks, Dave |
#2
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I live in Denver and have turbo and non-turbo 300d's. There is a huge difference at this altitude. It's like having a second engine.
People do retrofit turbos (at least in the UK) but many counsel against it because the turbo engine components are built heavier than the non-turbo. The pistons are also oil-cooled on the turbo engine and not on the non-turbo.
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1977 300d 70k--sold 08 1985 300TD 185k+ 1984 307d 126k--sold 8/03 1985 409d 65k--sold 06 1984 300SD 315k--daughter's car 1979 300SD 122k--sold 2/11 1999 Fuso FG Expedition Camper 1993 GMC Sierra 6.5 TD 4x4 1982 Bluebird Wanderlodge CAT 3208--Sold 2/13 |
#3
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I did not know they still made non turbo's in 1985...
But the difference is pretty large... when they added the turbo they decreased the compression ratio slightly and put oil squirters in the lower end to shoot cooling oil at the bottoms of the pistons... The difference is between about 85 hp and 120 with turbo.. a lot of improvement with the turbo...except for access room to work in the passenger side of the engine compartment.. |
#4
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Thank you
Again thank you all for your opinions think I will let this one go. What a shame that such a low miles MB that was a one owner car did not have a turbo.
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#5
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I also did not know that there were non-turbos imported into the US in 1985. I'd want to take a look at it first to make sure. I have talked to Mercedes owners who did not know how to be sure their engines were turbo or non-turbo.
Despite what I said about the difference between turbo and non-turbo, I am still very happy with my non-turbo version. At sea level, the differences would be less. In my mind, it would depend on the price. I would buy a low mileage non-turbo again if the price was right.
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1977 300d 70k--sold 08 1985 300TD 185k+ 1984 307d 126k--sold 8/03 1985 409d 65k--sold 06 1984 300SD 315k--daughter's car 1979 300SD 122k--sold 2/11 1999 Fuso FG Expedition Camper 1993 GMC Sierra 6.5 TD 4x4 1982 Bluebird Wanderlodge CAT 3208--Sold 2/13 |
#6
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A 1985 with no turbo is a gray-market import. All the US-spec 85 300D's were turbocharged. Since you live in Flrorida, there is no altitude problem. If you are happy with the power of the car, then buy it (assuming it is in good shape otherwise and the price is decent.) The turbo engine makes a bunch more power and is more fun to drive, IMO, but was never available with a manual transmission (bummer.)
Do not attempt to install a turbo on a non-turbo engine, that's a great way to melt pistons and create a large, expensive doorstop. The turbo engines have oil-cooled pistons and spray jets in the block to feed them, among many other differences. Regards, |
#7
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as noted, a 1985 non-turbo has gotta be gray-market.
just for kicks, check out the various pages at this site: http://www.geocities.com/SiliconValley/Pines/6633/w123info.html |
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