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3.5 Turbos

Discussion in '2011-2014 V6 Mustang Tech' started by rehoward, Feb 14, 2020.

  1. rehoward

    rehoward New Member

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    I have a 3.7 DOHC from a 2011 Mustang that I am transplanting into another car. I know of a 3.5 Ecoboost that is basically a parts engine. I may be able to buy the exhaust manifolds and turbos from it. Will the manifolds and turbos fit my 3.7 (I think they will). What would be a fair street price for the very used manifolds and turbos? Thanks.
     
  2. 08'MustangDude

    08'MustangDude Profile Violation

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    The 3.5 EcoBoost is a Duratec engine, just a GDI version of the 3.5 Duratec, so they
    should use the same heads. Inside the head may be different, the DOHC cam setup for
    the Mustang...

    The 3.7 Duratec (code name Cyclone) is the N/A motor for heavy or premium vehicles.
    The stroke is the same as the DT 3.5, with a bigger bore. The 3.7 in the Mustang
    though, is a DOHC version, with Ti-VCT. The Mustang is the first American vehicle to
    have a 3.7 Duratec motor since the '09 rear whel drive Lincoln LS. Was also the first
    production engine to deliver in excess of 300 hp, with a ~31MPG rating.

    The major problem, is they turned a $200 @ a shop parts & labor job to $1200+ to replace
    the water pump. They buried it inside the motor, and run it off the timing chain. A
    dealer wants over $2000 to replace it. They last up to 80,000 miles before the first
    seal goes.
     
  3. David Young

    David Young 5th Mustang

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    The 3.5 in our 2014 Edge sits sideways and the water pump is internal :(. It will take me 1 or 2 days to change when and if it goes bad. The 3.7 on the Mustang sit longways and the water pump is on the front of the engine, very easy to change. I would think the water pump on the 3.5 is on the front of the F150 engine since the motor sits longways. I'll check the Ford parts list to make sure.
     
  4. David Young

    David Young 5th Mustang

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    According to Ford Parts the 3.5 EcoBoost has the water pump on the front of the motor like our Mustangs :) On sale but new the turbo's cost $480 each and you need to buy 2 of them. A right side and a left side. This doesn't include the intercooler and all the piping, fittings, clamps Etc. :(

    Probably be cheaper to buy a wrecked F150 or just buy a complete EcoBoost 3.5 engine out of an F150 from a junk yard :(
     
    Last edited: Feb 15, 2020
  5. 08'MustangDude

    08'MustangDude Profile Violation

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    I watched a video showing the water pump under the timing chain cover in a longitudal 3.7.

    I saw a 2012 Mustang video, yeah, it was on the front of the motor for easy change.

    And these instructions...
    How to Replace the Water Pump and Gasket on the 2011-2014 Ford Mustang V6 (With Video)

    Anyhow, as far as the 3.5 EcoBoost, there are complete swaps out there somewhere.
    Best to do the whole motor at once, with all the trimmings. Wonder if you can use
    the EcoBoost ECU, and just put the the heads, pipes and turbos on the 3.7 engine.
    Little more than that, but, keep the short block, and put all the 3.5 top end anda
    turbo stuff on.
     
  6. rehoward

    rehoward New Member

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    Far as I know the EcoBoost ECU isn't a good choice for a 3.7. Two things are against it. The 3.5 controller is set up for direct injection, the 3.7 does not have direct injection. The 3.5 controller expects to see an automatic transmission, AFAIK the 3.5 only sees use with an automatic transmission and it expects inputs from the auto trans. You can buy from Ford a controller that will accept a manual transmission for the 3.5 but it costs $1900 from their performance dept. I have been researching putting 3.5 turbos on a 3.7. You can buy two brand new FoMoCo turbos for $550. That is for the pair, no fooling. Google Ford parts on line and you will find that brand new 3.5 exhaust manifolds are $53 a piece. They may not be a direct bolt-on to the 3.7 though and might require an adapter plate. Researching that now.
     
  7. 08'MustangDude

    08'MustangDude Profile Violation

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    Yeah, I saw that later the 3.7 is SMPI, not DI, so that won't work.

    Not a good choice no, but if people want he twin turbo, they do it.

    For originality, I'g go with a turbo's BARRA Engine, the Aussie cars use those.