Thread: HID upgrade early D2

Originally Posted by joel0407

It's not completly legal as the bulbs dont match the reflectors. It's not about having washers or SLS it's about beam pattern and as HID bulbs are such a different shape than the H4 bulbs, they can't maintain pattern.

Happy Days.

I realise this, but I have never had an issue with the police or anyone else since I fitted them over 4 years ago. The beam is affected slightly but I have adjusted them probably slightly lower than a standard h4 halogen to account for this. When compared to a mates D2 who has 90/120 halogens mine produce a brighter and clearer beam with only a marginal increase in glare when looking at the front of the vehicle.
I completely agree with them being a pain in all these lifted hiluxes and cruisers at night. I am a truck driver and get really annoyed at people who don't adjust them when fitting them to their vehicles. Don't get me started on the caravanners with hid's when they have their mobile road blocks on the back with quite obviously too much ball weight so they spot possums while doing 20km/h below the posted limit.

Thomas

Originally Posted by joel0407

You cant change the angle the light hits the reflector from the bulb. As the bulb is longer, the light is scattered more.

Rubbish

I have carefully compared the size and location of the HID chamber compared to the halogen filament - no difference - the light source is in exactly the same spot. in my car the light beam has exactly the same cutoff with HIDs as the halogens.

I get blinded more my maladjusted halogens than HIDs though often HIDS are more obvious than halogens because many fools go up and over 6000k.

Originally Posted by garrycol

Rubbish

I have carefully compared the size and location of the HID chamber compared to the halogen filament - no difference - the light source is in exactly the same spot. in my car the light beam has exactly the same cutoff with HIDs as the halogens.

I get blinded more my maladjusted halogens than HIDs though often HIDS are more obvious than halogens because many fools go up and over 6000k.

Can you provide a link a picture of your HID bulbs? I'm always willing to be corrected and I will apologize if I am wrong.

Happy Days

Theses are H1 HID next to H4 Halogen. I don't have any others lying around the house at the moment.



Now H1 dimensions.



H4 Dimensions.

Originally Posted by garrycol

in my car the light beam has exactly the same cutoff with HIDs as the halogens.

.

One of mine is like this. The HIDs went in & the headlights did not require adjusting at all. The cut off is identical to the halogen globes that were originally fitted. The colour is whiter (4300 IIRC, def not 6000) & that is the only difference you'll see.


Another RR is a different story - the HIDs made the beam so high that I ran out of adjustment & had to space the lights out at the top .

Originally Posted by Scouse

One of mine is like this. The HIDs went in & the headlights did not require adjusting at all. The cut off is identical to the halogen globes that were originally fitted. The colour is whiter (4300 IIRC, def not 6000) & that is the only difference you'll see.


Another RR is a different story - the HIDs made the beam so high that I ran out of adjustment & had to space the lights out at the top .

Does the RR take the same H4 bulb?

Happy Days

I'm currently scouring the net for something that looks like it might remotely work for High and Low beam H4. All that I am seeing have all sorts of weird looking shields, some even with a halogen bulb sort of hanging off the side. None look like they could perform half like a H4.

Happy Days

Originally Posted by joel0407

Can you provide a link a picture of your HID bulbs?

Not without pulling them out of the car - but i had heard comments about the gas chamber being a different focal length than halogens causing light to go everywhere so I went to see some bona -fide research bit found nothing - lots of testimonials but no scientific research - I measured both bulbs and found the focal length to be the same for H7 globes. Likewise the width of the chamber was the same as the filament width.

I marked out the beam of the halogens and compared it with the HIDs and there is no difference - this is the same when actually driving - the cutoff is just as sharp as the halogens, if all the hype is correct then they should be scattering all over the place. I have 4300k HIDs so only a little whiter than the halogens which are about 3800k.

In my view the issue with HIDs is not their actual brilliance in the eyes of oncoming drivers but their perceived brilliance because many are just too white starting into the blue heat range which is obvious.

As I said - I have more issue with out of adjustment halogens than the majority of HIDs.

Garry