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Thread: 3.0 L PRV carb build?

  1. #31
    Voice For Hire Farrar's Avatar
    Join Date:  May 2011

    Location:  Long Island, New York

    Posts:    4,282

    My VIN:    02613

    Club(s):   (LINY-DMC) (DCUK)

    Quote Originally Posted by Farrar View Post
    - Bottom end and camshafts from Volvo B280 (even fire, oil-to-water oil cooler, and cross-bolted main bearings
    Clarification: only bearings #2 and #3 are cross-bolted. (Source)
    DeLorean status: test driving new engine

    "Our doubts are traitors,
    And make us lose the good we oft might win
    By fearing to attempt."
    -Wm. Shakespeare, Measure for Measure

  2. #32
    Senior Member
    Join Date:  Feb 2016

    Posts:    943

    Don't know if you noticed Farrar's tagline: "DeLorean status: awaiting engine replacement".

    He and I are working on a carbureted 3.0 swap of his own. It differs from your project in that we aren't looking to build a performance engine -- we are working on proof of concept for a low impact conversion. Our goal is the least engineering and labor possible to get a 3.0 installed and running in his car (his current 2.8 is very sick, potentially not worth salvaging). Towards that end we will reuse his existing 2.8 intake manifold and carburetor, adapted to fit differences in the 3.0 intake valley. We hope to mount a hall effect equipped ignition distributor to the front of the engine, sending timing info to his current Bosch ignition module. Rather than swapping out lower engine castings, which requires unbolting the main bearings, we intend to adapt the 3.0 lower casting already on the engine to fit a DeLorean crossmember (I've already done something similar on my own PRV engine). Sanden 5 chamber 3.0 A/C compressors are available that will accept his DeLorean back and hoses (3.0 compressors bolt up totally differently from 2.8 ).

    We're still in the planning phase. Actual work is scheduled for late spring/summer. If our project works as hoped, the final result certainly won't be the most powerful 3.0 conversion, but it will be light years ahead of his current sick engine.

    That said, there are certain advantages all 3.0's have over their 2.8 predecessors, irrespective of installation particulars:
    - Even firing order
    - Slightly larger displacement
    - Hydraulic self adjusting valve lash
    - Potentially better aluminum (there's an Internet rumor that Douvrin changed their casting formula in the mid 80's)

    Bill Robertson
    #5939

  3. #33
    Junior Member
    Join Date:  Jul 2016

    Location:  Lynden

    Posts:    8

    I had a pair of IDA-3 carbs on a three liter in the '90s.... It was fun.

    Made an unbelievable amount of intake noise... Not enough power to justify dumping injection for it + carburators icing anytime weather conditions are right for that. At the time I was commuting to Seattle so many wet days that were just-so for carburator icing. Throttle seems stiff under my foot and it won't decelerate... Stomp on the gas to break up the ice.

    We're I to do that again I'd get the throttle bodies and run injection with 50mm throttle plates.

    Need lots of static compression, fancy heads, exhaust (headers ect) and big cams to make it worthwhile.

  4. #34
    Senior Member
    Join Date:  Feb 2016

    Posts:    943

    Farrar lives in New Orleans -- I really don't think ice will be an issue.

    Rust definitely, but not ice.

    Bill Robertson
    #5939

  5. #35
    President, DeLorean Industries
    Join Date:  May 2011

    Location:  CLE/PHX

    Posts:    2,284

    My VIN:    5646,5080, 5880, 10234, 3639, 2518, 10586, 1538

    Quote Originally Posted by content22207_2 View Post
    Farrar lives in New Orleans -- I really don't think ice will be an issue.

    Rust definitely, but not ice.

    Bill Robertson
    #5939
    Lol. Truth

  6. #36
    Senior Member
    Join Date:  Feb 2016

    Posts:    943

    Humidity in New Orleans is outrageous. Farrar can't use metal coat hangers because they leave rust stains on his clothes.

    Bill Robertson
    #5939

  7. #37
    President, DeLorean Industries
    Join Date:  May 2011

    Location:  CLE/PHX

    Posts:    2,284

    My VIN:    5646,5080, 5880, 10234, 3639, 2518, 10586, 1538

    Quote Originally Posted by content22207_2 View Post
    Humidity in New Orleans is outrageous. Farrar can't use metal coat hangers because they leave rust stains on his clothes.

    Bill Robertson
    #5939
    I know it is terrible. He has a fight on his hands down there .

  8. #38
    Voice For Hire Farrar's Avatar
    Join Date:  May 2011

    Location:  Long Island, New York

    Posts:    4,282

    My VIN:    02613

    Club(s):   (LINY-DMC) (DCUK)

    Quote Originally Posted by content22207_2 View Post
    Farrar can't use metal coat hangers because they leave rust stains on his clothes.
    To be fair, that was after Katrina when my apartment had no power, and therefore no air conditioning/dehumidifying, for over four months.

    But yes, rust is a problem. We don't have road salt here, but #2613 has acquired some frame rust since it moved to southeast Louisiana in 2007. And my tools, which were rust-free for decades in North Carolina garages, have acquired some surface rust in my garage here over just a few years. I have taken to saving those little containers of desiccant from pill bottles and putting them in my toolboxes to try to slow the rust by absorbing some of the humidity. Time will tell if it was a good idea or just wasted effort.

    I'm in NC right now to visit my folks over the Independence Day holiday. The difference is amazing -- it can be the same temperature, but the heat index is a negligible increase. In Charlotte, it can be 95F and feel like 98F, but in New Orleans with the humidity so high, 95F can give you a heat index reading of 110F. It's ridiculous. How anyone survived down here before air conditioning is beyond me.

    Happy Independence Day!
    DeLorean status: test driving new engine

    "Our doubts are traitors,
    And make us lose the good we oft might win
    By fearing to attempt."
    -Wm. Shakespeare, Measure for Measure

  9. #39
    Senior Member
    Join Date:  Feb 2016

    Posts:    943

    Don't sweat rust on your tools. Unless you bought them at Harbor Freight, they are made of high carbon alloy steel. Surface rust won't slough off or penetrate any further. They are basically like railroad track rails (nobody paints millions of miles of train tracks to prevent rust).

    Bill Robertson
    #5939

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