Notices
928 Forum
Sponsored by:
Sponsored by: 928 Specialists

Latest guidance on LED headlights

 
Old 01-01-2019, 11:50 PM
  #1  
drscottsmith
User
Thread Starter
 
drscottsmith's Avatar
 
Join Date: Jul 2016
Location: Duncan, SC
Posts: 650
Default Latest guidance on LED headlights

All -

Been searching but but cannot fund the latest in the discussion. Also realize the technology changes rather frequently.

As of today, what is the best LED headlight bulb for our cars?

I have an 83 928s, but the sealed beams have been replaced with 8ö H4 euro units.

thanks

-Scott
drscottsmith is offline  
Old 01-02-2019, 02:05 AM
  #2  
rjtw
User
 
Join Date: Oct 2002
Posts: 466
Default

Start here: https://rennlist.com/forums/928-foru...l#post15514412

Also contact Ed Scherer for a pair of sealing caps for the H4 assembly.
rjtw is offline  
Old 01-02-2019, 10:09 AM
  #3  
Chris Lockhart
Addict
Rennlist Member
 
Chris Lockhart's Avatar
 
Join Date: May 2001
Location: Taylors, S.C.
Posts: 2,046
Default

Originally Posted by drscottsmith View Post
All -

Been searching but but cannot fund the latest in the discussion. Also realize the technology changes rather frequently.

As of today, what is the best LED headlight bulb for our cars?

I have an 83 928s, but the sealed beams have been replaced with 8ö H4 euro units.

thanks

-Scott
I'm jealous!! I had no idea that you had euro H4's. You get better choices. Good luck!
Chris Lockhart is offline  
Old 01-02-2019, 01:16 PM
  #4  
Speedtoys
Addict
Rennlist Member
 
Speedtoys's Avatar
 
Join Date: Sep 2010
Location: Boulder Creek, CA
Posts: 9,806
Default

Here's...something at least interesting,..

https://www.boslla.com/
Speedtoys is offline  
Old 01-02-2019, 03:16 PM
  #5  
NewToPig
Addict
Rennlist Member
 
NewToPig's Avatar
 
Join Date: Nov 2015
Location: New Hampshire / MA
Posts: 125
Default

Originally Posted by Speedtoys View Post
Here's...something at least interesting,..

https://www.boslla.com/
I've tried to do this dual color before to keep the vintage warm look but it's always so hard to recreate. The bulbs look promising BUT we'd have to run another circuit to cycle the lights to change the colors. It would be super annoying to put the motors up/down several times to get the setting you want.
NewToPig is offline  
Old 01-02-2019, 03:29 PM
  #6  
Speedtoys
Addict
Rennlist Member
 
Speedtoys's Avatar
 
Join Date: Sep 2010
Location: Boulder Creek, CA
Posts: 9,806
Default

Originally Posted by NewToPig View Post
I've tried to do this dual color before to keep the vintage warm look but it's always so hard to recreate. The bulbs look promising BUT we'd have to run another circuit to cycle the lights to change the colors. It would be super annoying to put the motors up/down several times to get the setting you want.

Is turning them off/on via the switch an issue here?


The motors dont have to move to turn the bulbs off.
Speedtoys is offline  
Old 01-02-2019, 03:34 PM
  #7  
NewToPig
Addict
Rennlist Member
 
NewToPig's Avatar
 
Join Date: Nov 2015
Location: New Hampshire / MA
Posts: 125
Default

Originally Posted by Speedtoys View Post
Is turning them off/on via the switch an issue here?


The motors dont have to move to turn the bulbs off.
Yes, to cycle the mode is turning the bulb on and off. How to I cycle with the heads up?
NewToPig is offline  
Old 01-02-2019, 03:41 PM
  #8  
Speedtoys
Addict
Rennlist Member
 
Speedtoys's Avatar
 
Join Date: Sep 2010
Location: Boulder Creek, CA
Posts: 9,806
Default

Originally Posted by NewToPig View Post
Yes, to cycle the mode is turning the bulb on and off. How to I cycle with the heads up?
The switch has two positions.

You dont have to fully cycle the switch to turn OFF the headlights.

Turn it back one, and the lights go off, but stay up.
Speedtoys is offline  
Old 01-02-2019, 03:51 PM
  #9  
Ed Scherer
Addict
Rennlist Member
 
Ed Scherer's Avatar
 
Join Date: Jul 2001
Location: Shawnee, KS, USA
Posts: 7,058
Default

It might be worth looking back at a review I did (back in July 2017) of a few LED H4 options. Pay particular attention to geometry and the resulting beam patterns.

I haven't seen anything since that time that looks much, if at all, better than the model (which shows up under various brands, sometimes with minor cosmetic differences) I recommended in that post.
Ed Scherer is online now  
Old 01-02-2019, 05:05 PM
  #10  
NewToPig
Addict
Rennlist Member
 
NewToPig's Avatar
 
Join Date: Nov 2015
Location: New Hampshire / MA
Posts: 125
Default

Originally Posted by Ed Scherer View Post
It might be worth looking back at a review I did (back in July 2017) of a few LED H4 options. Pay particular attention to geometry and the resulting beam patterns.

I haven't seen anything since that time that looks much, if at all, better than the model (which shows up under various brands, sometimes with minor cosmetic differences) I recommended in that post.
Thanks and good write up. I ordered the Boslla lamps and will report back what the pattern is like.
NewToPig is offline  
Old 01-17-2019, 01:17 AM
  #11  
Speedtoys
Addict
Rennlist Member
 
Speedtoys's Avatar
 
Join Date: Sep 2010
Location: Boulder Creek, CA
Posts: 9,806
Default

Got mine from the kickstarter batch.

www.flickr.com/gp/[email protected]/225PAD

Im guessing that the LED placement is _just a tad_ long or short from the LumiLEDs I had in there that had a broader "spray" pattern up and to the right...But these align crisp on the proper line to keep out of peoples eyes.

Im happy.
Speedtoys is offline  
Old 01-17-2019, 10:36 AM
  #12  
drscottsmith
User
Thread Starter
 
drscottsmith's Avatar
 
Join Date: Jul 2016
Location: Duncan, SC
Posts: 650
Default

Originally Posted by Ed Scherer View Post
It might be worth looking back at a review I did (back in July 2017) of a few LED H4 options. Pay particular attention to geometry and the resulting beam patterns.

I haven't seen anything since that time that looks much, if at all, better than the model (which shows up under various brands, sometimes with minor cosmetic differences) I recommended in that post.
Ed that was really my question - had technology improved any for our 8" H4 setups since you did the original research. Thanks to all for chiming in as well. Always good to have opinions for people to consider in the future as someone else comes along with the same question.

Thanks!
drscottsmith is offline  
Old 01-17-2019, 11:39 AM
  #13  
Ed Scherer
Addict
Rennlist Member
 
Ed Scherer's Avatar
 
Join Date: Jul 2001
Location: Shawnee, KS, USA
Posts: 7,058
Default

Based on just looking at the pictures of the Boslla H4, it might be a well-designed unit. The geometry (LED placement), presence of a shield for the low beam, and LEDs on both sides of each bulb is a good sign.

It also looks like the current sealing caps I've got probably wouldn't work on these. It would be good if somebody who gets a Boslla H4 set takes and posts some measurements (most importantly, the diameter and length of the cylinder between the flange and the heat sink).

I haven't been able to find specs on the Boslla H4 bulbs, so there's not much to go on other than the pictures.

Ed Scherer is online now  
Old 01-19-2019, 07:34 PM
  #14  
Speedtoys
Addict
Rennlist Member
 
Speedtoys's Avatar
 
Join Date: Sep 2010
Location: Boulder Creek, CA
Posts: 9,806
Default

Here's what I think you wanted and more.
Speedtoys is offline  
Old 01-19-2019, 07:40 PM
  #15  
Speedtoys
Addict
Rennlist Member
 
Speedtoys's Avatar
 
Join Date: Sep 2010
Location: Boulder Creek, CA
Posts: 9,806
Default

If no photos. I'm on the app.

Try this Ed

https://www.flickr.com/gp/[email protected]/758w59
Speedtoys is offline  

Thread Tools
Search this Thread

Contact Us - About Us - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: