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Thread: HID H4 headlights

  1. 29th November 2011, 12:19 PM #21
    rover-56's Avatar
    rover-56
    rover-56 is offline Master Subscriber
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    Well - that opened up a can of worms!

    Update....

    Friend is returning kit for a refund.
    Seller tried to dazzle him with chinese/english technobabble, but eventually agreed to a refund. I suspect he wouldn't want too much attention to be focused (sorry) on the quality of his kits.

    The info in those links is very interesting reading, thanks for those. I would say that there is a very big difference between the quality conversion that Tombie has and the cheap kits that nearly everyone else is probably using.

    I would have fitted that kit if it hadn't been for the loose location of the HID bulb, and not noticed other potential problems like the flimsy low beam bulb shields which would likely have fallen off.

    Anyway I am out of it - looks like I am repairing the friendship by fitting relays and +50 bulbs to his car.

    Cheers all
    Terry
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  2. 29th November 2011, 06:39 PM #22
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    gavinwibrow
    gavinwibrow is offline YarnMaster Silver Subscriber
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    Quote Originally Posted by Tombie View Post
    Its very obvious that my D2 has HIDs... The light assemblies are pure white as you drive towards the vehicle...

    However - they will not dazzle you driving towards me...


    This is the difference - My HID kit is a very expensive, quality kit...

    The H4 bulbs are properly mounted, have the correct range of movement to focus correctly on both low and high - and are consistent in their positioning from low to high, and have a cut off to prevent glaring up into oncoming traffics eyes...

    Interestingly lots of people quote the curve of the arc... Poor positioning etc... Its miniscule - and can be adjusted out - not to mention heat (ambient & generated) in both lamp unit and globes of both types will move and influence the positioning of the filament / arc within the reflector.

    A filament inside a conventional bulb when on rough terrain moves - wobbles if you will - up and down - you can see it if your eyes are sensitive enough. Cant maintain focus in that condition...


    NOW - a basic H4...

    I've had a Philips, Narva and Hansa bulb side by side...
    All are H4 units
    All had different windings on the filament one was 18 coils, another 15 coils and one had 13 coils
    A rudimentary measurement shows the start point for the filaments to be varied by 1-3mm between bulbs...

    This quite often explains the misalignment often seen in vehicle headlights...

    I have no doubt, that ANY bulb not correctly designed, built or 'focused' will perform badly with scattered light everywhere..

    But a correctly positioned light source within the same housing will not, can not produce scattered light...

    Arguing against HID through and suggesting the +50 and +75 and +100 lights are better is like arguing in the "Does God exist" thread...
    The same sources used to shoot down a HID conversion also state that the "Plus Light" globes are a sham.... So make your choice....

    Me... Well like BMKal.. I will continue to run them in my vehicle - which has never been flashed... And will no longer be wading into these discussions..
    So Tombie - are you in a position to give us an order of magnitude cost of your proper HIDs please? Gavin (D2a)
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  3. 29th November 2011, 09:07 PM #23
    superquag
    superquag is offline ForumSage
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    - Wot 'e sed... and BMKal too,Please.

    - So we can have a benchmark or two - Brand & price of what we need to pay to get a half-way decent setup. (RRP will do) Should be illuminating...

    My failing memory thinks I paid around $US270 for my H4 set, 2 to 3 years ago.
    Last edited by superquag; 29th November 2011 at 09:12 PM. Reason: clarifirirfication
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