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Thread: Disco 2 engine Mods V8

  1. #1
    Slow Disco Guest

    Disco 2 engine Mods V8

    Hi,

    Just wondering what external engine mods can be carried out on v8 Disco 2 engines to give them some more hp? Any help would be appreciated.

    Cheers.

  2. #2
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    external--
    exhaust, sounds great, minimal benefit
    chip, a small improvement
    snorkle, nice cool air, HAS to be some improvement,, hard to prove though,,
    you are really left with the two biggies,,
    Turbo and Supercharger

    How fast do you want to go?
    "How long since you've visited The Good Oil?"

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    '16.5 RRS SDV8
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  3. #3
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    Quote Originally Posted by Pedro_The_Swift View Post
    external--
    exhaust, sounds great, minimal benefit
    chip, a small improvement
    snorkle, nice cool air, HAS to be some improvement,, hard to prove though,,
    you are really left with the two biggies,,
    Turbo and Supercharger

    How fast do you want to go?
    ........and how much money do you have, Regards Frank.

  4. #4
    tombraider Guest
    Quote Originally Posted by Pedro_The_Swift View Post
    external--
    exhaust, sounds great, minimal benefit
    chip, a small improvement
    snorkle, nice cool air, HAS to be some improvement,, hard to prove though,,
    you are really left with the two biggies,,
    Turbo and Supercharger

    How fast do you want to go?
    Port/tidy heads, O/S exhaust valves

    Torque profiled camshaft

    Extractors

    Custom mapped ECU

  5. #5
    tombraider Guest
    Or drop a 4.6 bottom end on it

  6. #6
    p38arover's Avatar
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    Quote Originally Posted by tombraider View Post
    Or drop a 4.6 bottom end on it
    The Americans got the D2 with the 4.6. Why not here?
    Ron B.
    VK2OTC

    2003 L322 Range Rover Vogue 4.4 V8 Auto
    2007 Yamaha XJR1300
    Previous: 1983, 1986 RRC; 1995, 1996 P38A; 1995 Disco1; 1984 V8 County 110; Series IIA



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  7. #7
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    Quote Originally Posted by p38arover View Post
    The Americans got the D2 with the 4.6. Why not here?
    fuel price, registration costs, bugger the bush levies, and market numbers, [ie: how many out of 20 mil people are going to buy one]
    Safe Travels
    harry

  8. #8
    p38arover's Avatar
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    Maybe it would have competed with the 4.6 Range Rover down here.
    Ron B.
    VK2OTC

    2003 L322 Range Rover Vogue 4.4 V8 Auto
    2007 Yamaha XJR1300
    Previous: 1983, 1986 RRC; 1995, 1996 P38A; 1995 Disco1; 1984 V8 County 110; Series IIA



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  9. #9
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    The NAS disco needed the 4.6 to compete with all the other similarly priced SUV's over there. They generally had bigger and more powerful engines than the D2's 4.0.
    97 D1 V8 SE manual - loud & locked - RPI Optimax & some toys
    09 D3 HSE
    Sold and missed: 03 D2a V8 auto

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  10. #10
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    Just wondering what external engine mods can be carried out on v8 Disco 2 engines to give them some more hp? Any help would be appreciated.
    Which Disco2 do you have?
    1 GEMS low Comp?
    2 Thor low comp?
    3 Thor high comp?
    GEMS can benefit a little from a Unichip or other interceptor.
    I found heads on my old 3.9 gave 6%. Thor manifolds will give much more torque down low, which is good in auto.
    My 3.9 RRC with 14CUX has 50% more down low power with Unichip, heads, Thor inlet. I understand that Unichip gains on GEMS are much less , but 10 - 15% still is quite a bit.

    Thor is more difficult as the Motronic is pretty optimised, and any changes eg heads may be negated by Motronic reverting to known values. Definitely no cam, exhaust. AFAIK you must even use the OE type plugs as Motronic reads the resistance and knows of misfire even.

    Regards Philip A

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