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Thread: Harrop 2300 supercharger to Optimiser 6500

  1. #11
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    Quote Originally Posted by Ben-e-boy View Post
    Can I ask why a blower and not a turbo?
    Heat sink under the bonnet. GQ's dont cope at all with a turbo on this motor - was not even an option, would not sell/fit one, so went N?A to begin with then the blower.

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  3. #12
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    P1080854.JPGP1080858.JPGP1080857.JPGP1080854.JPG

    OK so needed to do one at a time. Pics from yesterday. Dodged a bullet with the Burgoynes radiator smash up I reckon.

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    Well, have come to a grinding halt. There are two timing gear sets and I have the wrong one. The DB2 is for a mechanical pump, which I have. The DB4 is for an electronic pump and contains what is called a reluctor wheel which is a modified unit off the original setup - being thinner. It is now apparent I have a reluctor wheel in my assy as its used for the tacho pick-up, so placed order for the parts - reluctor wheel and extended key this morning - 10 days ex USA. So, 2 steps forward, 1 step back. I will start stripping the top of the engine instead after taking photos of everything. Ah yes, its soooooo good to practice isn't it???

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    OK, moved on today, inlet manifold off, attacking the injectors/pumps tomorrow. Car looks like a garage monument to craziness, but I am sure it will come good. Bit concerned initially about the whole timing issue and gears last night, but watched a video on it today, all good i reckon - will see how many nuts and bolts I have left over at jobs end.[ATTACH=CONFIG]78782[/ATTACH P6250368.JPG P6250359.JPG P6250347.JPG P6250365.JPG

    So couple of questions for the diesel mechanics out there, what are the smaller central ports for down each bank, and what are the two canister things on the back of the block adjacent to the firewall?

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    Patrol God nissannewby's Avatar
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    Small ports I think are used when EGR was fitted hence being black. Non EGR intake manifolds just don't have a port so it gets blanked off. I could be wrong here.

    The small canisters. The one in the valley is where the distributor would go on a petrol car. I am not sure what the arrangement is on the top of this. There is a shaft under it that drives the oil pump. The other one looks like a vac switch. Possibly used for something when the engine had a ds4 pump on. But anyone that does 6.5 conversions over here don't seem to like the electronic stanadyne instead swapping them for the mechanical ds2 injector pump.

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    Quote Originally Posted by nissannewby View Post
    Small ports I think are used when EGR was fitted hence being black. Non EGR intake manifolds just don't have a port so it gets blanked off. I could be wrong here.

    The small canisters. The one in the valley is where the distributor would go on a petrol car. I am not sure what the arrangement is on the top of this. There is a shaft under it that drives the oil pump. The other one looks like a vac switch. Possibly used for something when the engine had a ds4 pump on. But anyone that does 6.5 conversions over here don't seem to like the electronic stanadyne instead swapping them for the mechanical ds2 injector pump.
    Many thanks, Poindexter has commented about the EGR on another site also, will ask the question of BD tomorrow as would prefer to know what they are and if they are the sort of thing that could stop the vehicle if they broke/stopped working.

  10. #17
    Smart like tractor Ben-e-boy's Avatar
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    While you're waiting for parts, you should get the die grinder out and port stuff. Those intake runners look too small

    The intake manifold is definitely too small
    Last edited by Ben-e-boy; 25th June 2019 at 09:04 PM.
    96 GQ coil/Cab
    08 G6eT


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    @poindexter Ralph mate, little help please for old mate, same timing gears Leyroy?
    Get and give back share knowledge please good man?


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    Quote Originally Posted by Ben-e-boy View Post
    While you're waiting for parts, you should get the die grinder out and port stuff. Those intake runners look too small

    The intake manifold is definitely too small
    I will pull out the verniers tomorrow and have a look. I have just been reading about this last week, will compare with the s/c manifold.

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    Yep, same timing gears

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