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Why did they ever go away from glass head lamps? #4701763
03/21/18 10:59 AM
03/21/18 10:59 AM
Joined: Feb 2018
Posts: 509
Chester County/Pa.
BAJA_05 Offline OP
BAJA_05  Offline OP
Joined: Feb 2018
Posts: 509
Chester County/Pa.
Hello everybody, years ago cars/trucks had the glass head light lenses and they worked perfectly in my opinion. Fast forward years and all these car/truck manufacturers use plastic. The glass, all you had to do was clean them and they would be fine -- no hazeing or showing scratches. These plastic lenses are JUNK and a pain in the arse.


Dale

Last edited by BAJA_05; 03/21/18 10:59 AM.

2017 VW Jetta SE TSI 1.4L Turbo (hers)
M1 Euro 0W40 & FU (19K)
2008 Acura TL 3.2L PPPP 0W20 & FU (108K)
2005 Subaru Baja AWD 2.5L N/A 5spd.
QSHM 5W30 & FU (96K)
2000 Ram 4X4 5.9L (93K) PYB 10W30 & FU
Re: Why did they ever go away from glass head lamps? [Re: BAJA_05] #4701768
03/21/18 11:06 AM
03/21/18 11:06 AM
Joined: Oct 2012
Posts: 2,170
Northern Ontario, Canada
Danno Online content
Danno  Online Content
Joined: Oct 2012
Posts: 2,170
Northern Ontario, Canada
Plastic is cheaper and is easy to mold into complex shapes. Automakers don't care about vehicle appearance or longevity after they leave warranty. Call it school of hard knocks.


2016 Sorento SX V6 AWD
2015 KIA RIO SX
2010 Mazda 3 2.0L
2009 Venza V6 AWD
2013 Sonata 2.4L RIP in write-off crash
Re: Why did they ever go away from glass head lamps? [Re: BAJA_05] #4701769
03/21/18 11:06 AM
03/21/18 11:06 AM
Joined: Mar 2012
Posts: 1,311
San Antonio, TX
E150GT Offline
E150GT  Offline
Joined: Mar 2012
Posts: 1,311
San Antonio, TX
because plastic is cheaper and lighter and much easier to make curvy like todays cars.


1984 Mercedes-Benz 300SD - 100k
1995 F150 XL 4.9 reg cab 5MT - 251k 5w30
2016 Mazda6 Touring 6MT - 57k 10w30
2006 Buick Lucerne CXL 3.8 31k 5w30
Re: Why did they ever go away from glass head lamps? [Re: BAJA_05] #4701771
03/21/18 11:08 AM
03/21/18 11:08 AM
Joined: Jun 2014
Posts: 1,837
Ca.
UncleDave Offline
UncleDave  Offline
Joined: Jun 2014
Posts: 1,837
Ca.
Years ago headlights were all simply flat faced rectangles of varying sizes.

The shape of headlights radically changed with them being blended into the aero of the car and lights are no longer identical between models.

It isn't economically feasible to shape glass for each model vehicle, then change each model year, it could be done but the lights would be horrifically expensive.

UD


Uncle Dave
Cat 3126/2 MB3500/Titan/RX400H/17 Ridgeline
700HP V10/ 725HP BBC/ Raptor 700/ KFX450/ YZ250/Onan 8K/ Cat3011C
Re: Why did they ever go away from glass head lamps? [Re: UncleDave] #4701777
03/21/18 11:11 AM
03/21/18 11:11 AM
Joined: Jan 2011
Posts: 3,013
PV Az
AZjeff Online content
AZjeff  Online Content
Joined: Jan 2011
Posts: 3,013
PV Az
Originally Posted By: UncleDave
Years ago headlights were all simply flat faced rectangles of varying sizes.


Youngster. Years ago headlights were round before they were rectangles! grin

The makers of the sealed beams fought for years to keep the curved plastic lenses from being certified for highway use.


86 Samurai 1.3 leftovers
14 RAV4 2.5 5W-20 PP
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Re: Why did they ever go away from glass head lamps? [Re: BAJA_05] #4701785
03/21/18 11:19 AM
03/21/18 11:19 AM
Joined: Jun 2015
Posts: 4,279
New England
Virtus_Probi Offline
Virtus_Probi  Offline
Joined: Jun 2015
Posts: 4,279
New England
There also used to be a lot more glass around from headlights shattering during fender benders...don't miss glass headlights or bottles at all.


2014 Forester XT, 90000 miles
Last Change;
M1 5W30 d1G2
Tokyo Roki 15208AA170 filter
Re: Why did they ever go away from glass head lamps? [Re: Virtus_Probi] #4701809
03/21/18 11:33 AM
03/21/18 11:33 AM
Joined: May 2015
Posts: 175
Virginia
GravelRoad Offline
GravelRoad  Offline
Joined: May 2015
Posts: 175
Virginia
Some people before that were not happy with the electric light bulb replacing the carbide lamps or acetylene gas lamps on their vehicles.

shocked2


2016 Subaru Outback Premium 2.5. PP 5w30 oem filter
2018 Hyundai Kona 1.6T. Lifetime dealer free oil/filter change
Re: Why did they ever go away from glass head lamps? [Re: BAJA_05] #4701821
03/21/18 11:40 AM
03/21/18 11:40 AM
Joined: Feb 2016
Posts: 540
GA
miden851 Offline
miden851  Offline
Joined: Feb 2016
Posts: 540
GA
The same philosophy is catered in bottling of soft drinks these days


2008 Mazda6i GT; @204K miles
2016 Honda CR-V EX-L; @34K miles
Re: Why did they ever go away from glass head lamps? [Re: BAJA_05] #4701829
03/21/18 11:46 AM
03/21/18 11:46 AM
Joined: Dec 2017
Posts: 1,147
US
JLTD Online shocked
JLTD  Online Shocked
Joined: Dec 2017
Posts: 1,147
US
Bulbs last longer in the new applications and the light is brighter.

One thing I most definitely miss about sealed beam headlights, is that the heat would melt off the snow and ice.


I'm a thickie; assimilate
But 20s have their place

Using AMSOIL

Hers: 2008 Jeep Liberty 138k, SS 5w30/Amsoil

His: 2015 4Runner 41k, OE 5w20/Wix

Re: Why did they ever go away from glass head lamps? [Re: BAJA_05] #4701831
03/21/18 11:47 AM
03/21/18 11:47 AM
Joined: Apr 2012
Posts: 5,262
MA
Wolf359 Online content
Wolf359  Online Content
Joined: Apr 2012
Posts: 5,262
MA
Probably due to CAFE. I had those old square lights on an older car and when it burned out I think I got another lamp at the auto parts store for around $5-$10, it was glass. It was pretty heavy compared to the one that the automaker put in which was plastic. Plastic is really light.

Some of the new lights are fine though, they really blend in with the car.

Re: Why did they ever go away from glass head lamps? [Re: BAJA_05] #4701832
03/21/18 11:47 AM
03/21/18 11:47 AM
Joined: Dec 2012
Posts: 616
Washington for now
WhyMe Offline
WhyMe  Offline
Joined: Dec 2012
Posts: 616
Washington for now
i am glad they went to plastic. like windshields, glass headlight would get damaged by rocks easily. then they lose their seal and condensation clouds them up.

Re: Why did they ever go away from glass head lamps? [Re: BAJA_05] #4701833
03/21/18 11:48 AM
03/21/18 11:48 AM
Joined: Sep 2015
Posts: 5,951
Kalifornia Kollective
BrocLuno Offline
BrocLuno  Offline
Joined: Sep 2015
Posts: 5,951
Kalifornia Kollective
Plastic bottles (key up sad music) => Pacific Gyer: Wiki

Glass headlights could be behind plastic aero shields (Ex: Jag XKE), but that would make for increased production costs...

I suspect we'll go back to glass bottles someday for enviro reasons ... Glass headlights, not so much (although I'd like to) frown

Re: Why did they ever go away from glass head lamps? [Re: BAJA_05] #4701837
03/21/18 11:50 AM
03/21/18 11:50 AM
Joined: Jun 2002
Posts: 12,564
The Motor City
Kestas Offline
Kestas  Offline
Joined: Jun 2002
Posts: 12,564
The Motor City
The reason they switched is for styling.

It also helped that it provided a new venue for the automaker to make more money with replacement parts. Instead of $10 apiece to change headlamps, it's now $150. You still have to pay $10 if the bulb burns out.

This is one case where older technology is better. Other than styling, I see no advantage with the new plastic headlamp designs.

Re: Why did they ever go away from glass head lamps? [Re: BAJA_05] #4701854
03/21/18 11:59 AM
03/21/18 11:59 AM
Joined: Sep 2004
Posts: 7,604
Marshfield , MA
andyd Offline
andyd  Offline
Joined: Sep 2004
Posts: 7,604
Marshfield , MA
I used Hella H4 housings to replace the 5 1/4 round low beams. I'm thinking of grafting them into the Rat to replace the milky plastic lights on the Rat grin2


'16 Camry LE STP synth 0w20 and STP filter. the Fridge

1994 Ranger ,the Rat, 5w30 dino, STP filter

'16 Camry SE, Valvoline HM 0w20 and OEM filter
Thick oil is better grin2
Re: Why did they ever go away from glass head lamps? [Re: Kestas] #4701860
03/21/18 12:01 PM
03/21/18 12:01 PM
Joined: Mar 2015
Posts: 1,234
New York City
SeaJay Offline
SeaJay  Offline
Joined: Mar 2015
Posts: 1,234
New York City
Originally Posted By: Kestas
The reason they switched is for styling.

It also helped that it provided a new venue for the automaker to make more money with replacement parts. Instead of $10 apiece to change headlamps, it's now $150. You still have to pay $10 if the bulb burns out.

This is one case where older technology is better. Other than styling, I see no advantage with the new plastic headlamp designs.


Bingo, a double play for manufacturers. They sell more cars cause they are cool looking, and sell more replacement parts. $$$$$ rules the game.

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