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Thread: Joining the 4BD1 turbo fitting group - some help please!

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    Joining the 4BD1 turbo fitting group - some help please!

    After many years following some fabulous posts I too want to join the 'try it myself turbo' on my 1988 4BD1 (cost is a large part of it verses drive-in drive-out!) and like others I can wield a spanner but I'm not a garage wizz! Going for a HE221w and standard manifold... however first stumbling block was genuine exhaust manifold 8943662470 is no longer available through Isuzu dealers at $280 - $320, back to full at $600 - $650 + gst unless anyone knows different? If I go down the China route has anyone got a recommendation from personal experience as I know quality, durability and fit varies hugely Opposite to that has anyone had a flash cross-over manifold made up that takes the Holset 5.5cm, supplier, cost? And any thoughts on a few spare part numbers I haven't been able to find; engine gasket set I had was 5878104620 and appears only as Eazyparts 2A6006, is this correct or are there others? Also is there a part number for the oil feed pipe from block to alternator, is the rubber hose by the bypass hose on the pump just standard hose contorted to fit up to the heater pipe or is there a part number? and does anyone know a supplier for the alternator pulley? mine came with a twin pulley wheel (probably for an early Patrol or similar) Lots of questions I know, but hoping someone has a few spare moments to fill some of the knowledge gaps

    Cheers Ted

    Series 2A ute
    GS daily drive
    GS in the shed for above surgery!

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    Joining the 4BD1 turbo fitting group - some help please!

    Most of the cost of the “kit” turbos account for the research involved in making everything fit and function
    Be prepared to research on FB and here to fond out what others have done
    It appears that many have succeeded with this but many have failed
    Research is essential if you don’t want to spend the money for the kits
    Phil B

    Custodian of:
    1974 S3 swb wagon (sold)
    1978 S3 swb canvas
    48 749 '88 4x4 Perentie
    1985 County with 4BD1T

  3. #3
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    Thanks for the well meaning words Phil, and researched I have but like many before me and I'm sure many after I find conflicting information and was looking for anyone who had trod a similar route before and without going to too much trouble had an answer, e.g. exhaust manifold 8943660210 from a 4BG1T or one from a 4BD2 fit, but maybe have a different flange size etc.

    I am totally for the walk in walk out and have no issue with the typical costs for the turbo kits, I agree it is also their intellect that is part of the price and as a business they are there to make a profit. Reality check is for me my current situation doesn't allow me that luxury.

    Thanks again

    Ted


    Series 2A ute
    GS daily drive
    GS in the shed for the above surgery!

  4. #4
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    Ted
    I went down the same route as you are exploring and in the end decided to buy and install a kit.
    I just found there was too much conflicting opinion about the parts, specs etc to make a sensible decision on a way forward with a self build.
    Mine went together easily and has performed well over the last 3 years. I didn’t want rubber burning power, just better tractability and reliability which I got. In fact I have detuned mine slightly to lower EGT’s.
    More than happy.
    Good luck which ever way you decide to go, you won’t regret how a turbo wakes up the 4bd1
    Phil B

    Custodian of:
    1974 S3 swb wagon (sold)
    1978 S3 swb canvas
    48 749 '88 4x4 Perentie
    1985 County with 4BD1T

  5. #5
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    Quote Originally Posted by Muddy Boots View Post
    After many years following some fabulous posts I too want to join the 'try it myself turbo' on my 1988 4BD1 (cost is a large part of it verses drive-in drive-out!) and like others I can wield a spanner but I'm not a garage wizz! Going for a HE221w and standard manifold... however first stumbling block was genuine exhaust manifold 8943662470 is no longer available through Isuzu dealers at $280 - $320, back to full at $600 - $650 + gst unless anyone knows different? If I go down the China route has anyone got a recommendation from personal experience as I know quality, durability and fit varies hugely Opposite to that has anyone had a flash cross-over manifold made up that takes the Holset 5.5cm, supplier, cost? And any thoughts on a few spare part numbers I haven't been able to find; engine gasket set I had was 5878104620 and appears only as Eazyparts 2A6006, is this correct or are there others? Also is there a part number for the oil feed pipe from block to alternator, is the rubber hose by the bypass hose on the pump just standard hose contorted to fit up to the heater pipe or is there a part number? and does anyone know a supplier for the alternator pulley? mine came with a twin pulley wheel (probably for an early Patrol or similar) Lots of questions I know, but hoping someone has a few spare moments to fill some of the knowledge gaps

    Cheers Ted

    Series 2A ute
    GS daily drive
    GS in the shed for above surgery!

    My local isuzu parts dealer, HIM can get the manifolds and the gaskets. you'll need a spacer block
    Dave

    "In a Landrover the other vehicle is your crumple zone."

    For spelling call Rogets, for mechanicing call me.

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    If you've benefited from one or more of my posts please remember, your taxes paid for my skill sets, I'm just trying to make sure you get your monies worth.
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    Apparently the T25 top mount manifold from the 4BD2 is what some people have used, try some truck wreckers, they might even let you compare/measure the part before you buy it or not.
    I would be surprised if you engine related part numbers are not in here: https://www.remlr.com/documents/RPS/...GS/02188-1.pdf
    I also agree with everything Phil said

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    Quote Originally Posted by Blknight.aus View Post
    My local isuzu parts dealer, HIM can get the manifolds and the gaskets. you'll need a spacer block
    What is the spacer block for?
    Ron B.
    VK2OTC

    2003 L322 Range Rover Vogue 4.4 V8 Auto
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  8. #8
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    The kits are not expensive. They are just not using cheap parts. You get what you pay for.

    IMO you are asking too many questions to be able to do a quality job and you will have endless problems because of it.

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    Quote Originally Posted by p38arover View Post
    What is the spacer block for?
    depending on which variant of the he221/he31 you get the compressor housing will foul the manifold. Its also a really good place to tap up and setup the EGT probe. and 8mm is enough but a 10mm makes tapping the egt probe in a little less stressful.

    I've also had an issue where the provided studs had too much unthreaded shank on them and the nuts wouldnt tighten up.
    Dave

    "In a Landrover the other vehicle is your crumple zone."

    For spelling call Rogets, for mechanicing call me.

    Fozzy, 2.25D SIII Ex DCA Ute
    Tdi autoManual d1 (gave it to the Mupion)
    Archaeoptersix 1990 6x6 dual cab(This things staying)


    If you've benefited from one or more of my posts please remember, your taxes paid for my skill sets, I'm just trying to make sure you get your monies worth.
    If you think you're in front on the deal, pay it forwards.

  10. #10
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    Quote Originally Posted by p38arover View Post
    What is the spacer block for?
    The most popular Isuzu manifold is the one used on the 6x6, with 45 degree flange which I believe is a T3 flange. Many popular turbos have the smaller T2 flange. So an adaptor plate needs to be used.

    The 6x6 used a T25 turbo so I assume they required an adaptor plate.
    L322 tdv8 poverty pack - wow
    Perentie 110 wagon ARN 49-107 (probably selling) turbo, p/steer, RFSV front axle/trutrack, HF, gullwing windows, double jerrys etc.
    Perentie 110 wagon ARN 48-699 another project
    Track Trailer ARN 200-117
    REMLR # 137

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