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Go Speedracer, go!
 
SpeedracerIndy's Avatar
 
Join Date: Aug 2002
Location: Indianapolis
Posts: 1,951
How to align H4's

I read a procedure on aligning H4's that instructed me to park 10 meters (~32') away from a wall/garage door, and adjust the lights so that the light cut off is 2 meters (~6.5') high. I followed this procedure and my lights are pointing in the trees! I thought it seemed ridiculously high when I was aiming them. Can someone give me the proper procedure for aiming H4's? These are Euro H4's.

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1981 SC ROW Coupe
Old 03-29-2004, 03:53 PM
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Join Date: Dec 2001
Location: MA USA
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With the car 25' from wall. With the low beams on, the horizontal should be 2" lower than the center of the headlite. That should get you close.
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Dean
911 SC turbo, 3.0L 930 motor, G50, 930 brakes, DTA EFI, 352 RWHP DynoDynamic dyno,
Old 03-29-2004, 04:45 PM
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SilverPoly's Avatar
 
Join Date: Feb 2003
Location: Hollywoodland
Posts: 468
Casey,

Here's a link that pwd72s stole from rennlist. It has some good info on headlight alignment. Good luck.

http://www.autooptiks.com/aiming.html
Old 03-29-2004, 04:48 PM
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SpeedracerIndy's Avatar
 
Join Date: Aug 2002
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Thanks! That makes much more sense, and now my new 80/100 watt bulbs light up the road instead of houses and trees.

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1981 SC ROW Coupe
Old 03-29-2004, 05:05 PM
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