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Location: Louisville KY
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Difference between H1 and H4 headlights?
Any difference in the headlight or is it just the bulb? I can't seem to find anything in the search?
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03-31-2007, 04:21 AM
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Location: Richmond, VA
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Re: Difference between H1 and H4 headlights?
Difference? About $700.
 Other than that, they're very different. H4's use one H4 lamp and a single reflector. The H1's use two H1 lamps, each with their own reflector. The lenses are different as well to accommodate the different reflector configuration.
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David Dryden '86 911 Coupe '05 BMW X5 4.4i |
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03-31-2007, 05:03 AM
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Precisely ! H4 is really good , and cheap , both filaments in one bulb.
H1 is more expensive , one bulb serves one purpose only. |
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03-31-2007, 05:38 AM
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Back in New England!
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Mainly since H1's have two reflectors and two bulbs, you can point each reflector to shine the high and low beams in different directions if that is what you prefer. H4's have both filaments in the same bulb, hence the need for a single reflector.
-Matt
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'78 RoW 911SC Targa converted to a '86-like 3.2L Cab (w/930 body & No A/C) Custom subframe integrated into AutoPower Half Cage, Euro Ride Height, Turbo Tie-Rods, WeltMeister Bump Steer Kit, Sway-Away 26mm Rear Torsion Bars, Koni Adjustable Shocks and Strut Inserts, Two Bar Rennline Strut Tower Brace, Poly Motor Mounts, WEVO Trans Mounts, Modified Conical K&N Intake, ER PB A-arm bushings and 17" CUP3 Wheels. Steve Wong Chip! |
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03-31-2007, 06:05 AM
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Thanks
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03-31-2007, 06:06 AM
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Location: Buena Park, Ca.
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Doug,
If you are working on an early 911...73 and previous, I recommend the use of H1's. They are period correct and have a unique look when driving with low beams....cat-like. Since they are rare....they are pricey. See pic of my 70 911.  I remember a guy selling a NOS set 2 years ago for $1500. At the time that was a lot of money. That is nolonger the case. H4's are great....I use them on my 930  Best of luck in your search/purchase. Paul
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1970 911 (SLVR/BLK/SRD) 930 RSR in "Excellence" Sept 2007 (SOLD) 1983 911SC EURO (SOLD) |
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03-31-2007, 06:20 AM
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Location: Rescue, CA
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Anyone know if the headlight rims are interchangeable?
Thanks!
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Doug  84 Carrera Coupe - Black (the Goth look)  The more I learn, the more I realize I don't know 
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03-31-2007, 08:05 AM
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Location: Long Beach CA, the sewer by the sea.
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Not the base rings. H1's have four adjuster screws, H4 have 2.
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03-31-2007, 10:46 AM
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Location: Linn County, Oregon
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Perhaps this is a better pic of H-1's...showing the adjusting screws...the fog light is factory original
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"Now, to put a water-cooled engine in the rear and to have a radiator in the front, that's not very intelligent." -Ferry Porsche (PANO, Oct. '73) (I, Paul D. have loved this quote since 1973. It will remain as long as I post here.) |
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03-31-2007, 10:58 AM
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Location: Austin, TX
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Here's a closer picture of an H1 on my 77 with the trim ring installed.
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'73 911T RoW (Project) '77 911S 2.7RS '76 914 2.0 Early911SReg #2945 |
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03-31-2007, 02:27 PM
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I got it now... Thanks for the info/pics
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Doug 84 Carrera Coupe - Black (the Goth look) The more I learn, the more I realize I don't know
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03-31-2007, 03:20 PM
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Thanks everyone.
The reason I asked was that these were at $330 with 30 minutes to go this morning. I have H4's already, but never knew the difference. I didn't know if it would be a upgrade or not. Sorry, link does not work but they ended up at $540. Last edited by DougM; 03-31-2007 at 06:36 PM.. |
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03-31-2007, 06:33 PM
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1978 Porsche 911 3.2L
