The way that Sylvania/Osram gets more light out of the bulb, is that they use a thinner gauge wire in the coil (filament) than the stock ones. This gets hotter, gives off more light, and as a result burns out faster. Most of my customers who run the Silverstar Ultras as well as the standard Silverstars only get about 6 months out of them before they fail. They are kinda like a hot love affair..short-lived but way hotter than normal?

 

You may be right but I still wouldn't know as I drive only about 10-15 thousand kilometers a year... so for me it has worked great so far.

 

Sylvania and Osram are the same company.
Tiger is right about the ones rated "brighter than normal" for a given wattage burning out faster.
Tip: when you go to buy bulbs, Sylvania is pretty much the main choice in the FLAPS.
However you can read on the metal part of the bulbs where they were made - the ones made in Germany are better quality than the ones made in USA or elsewhere.

 

A few years back I build a set of HID headlight for my 71 911. That was a lot of work and even to used HID parts were quite expensive.

On the 944 which had 7" sealed beams, I got some Hella H4 with 55/60 watt halogen bulbs, which was quite an improvement over the sealed beams.

However, going back to drive the 944 compared to the HID in the Boxster, wasn't that good. So I tried some LED's.

Here is what I used:

First the H4 Halogen 55/60 Watt, # 1 below. https://10carbest.com/best-jeep-wrangler-led-headlights








All I can say: Seeing is believing.

Now these would fit direct in the cars with the sugar scoop headlights and the 914, 924, 944.

Next will be to see how hard it will be to mount them in the Euro H4 headlights.

 

What are the parts for # 2 , 3 and 4 in your photos? Which did you like the best?

 

^ which LED did you get ? JW Speaker or other?

 

delete this ****

 

Lets try again...

I just installed one of these http://www.canadiantire.ca/en/pdp/al...-0203500p.html because the store only had one in stock. Not fully sold, maybe if expecting too much? seem to think the hid's in my bmw and vw are same or better? they have a good colour and cutoff with a nice flare up to the right like the old h4 hellas (like an "E code" light, DOT and E are stamped on the lens), was just expecting brighter. Night shots seen online are tough because cameras don't see the same as our eyes.

my thread... https://rennlist.com/forums/924-931-...with-pics.html

 

Where did you purchase #4?

 

I have the #3, which I purchased from Amazon for around $85 and they I find them very ugly, but they are a huge improvement over the stock sealed headlights. I didn't care much about how ugly they look because you never see the headlights until night and when they are on, you cant see the lens, and the lighting is amazing.

 

#3 has a terrible beam pattern. I can't tell you how many Jeep's pass me at night that blind the hell out of me. Very obnoxious.

Look at the cutoff and wide bright spread of #4. No hot spots either. That is the ideal light. I need those

 

 

Well I found #4 on eBay. Several listings for them and all sellers have them at $128 shipped. I might pull the trigger ...

 

Lahien,
Any chance you've tried Truklite's and they just didn't make the post? I've been looking at them for the Jeep for about 2 years and they've got my vote from researching LED's about a year ago. They've also got a pretty clean look, not quite traditional, but not the space bug look of the JW Speakers or others.

 

Anyone tried these?
https://www.only944.com/partscatalog/only/ledheadlight/