Author Topic: H4 brand?  (Read 692 times)

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Offline 70CB750

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H4 brand?
« on: March 21, 2014, 03:29:04 AM »
My last Sylvania lasted only 10 month or so, now the high beam is gone.  I remember thsi one was specifically designed for motorcycles and resistant to shaking.

Do you have a preferred brand of H4  that lasts longer?
Prokop
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Dorothy - my CB750
CB750K3F - The Red
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Offline PeWe

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Re: H4 brand?
« Reply #1 on: March 21, 2014, 03:38:34 AM »
Philips has very good bulbs. I have heard of cars where the bulbs dies quickly, solved when using Philips. Might withstand over voltage better...
I have a working H4 bulb, next will be Philips Extreme Vision H4. They have long life version too.
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
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http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline andy750

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Re: H4 brand?
« Reply #2 on: March 21, 2014, 04:21:25 AM »
I currently have a Candelpower headlight in my K2 works well

http://4into1.com/candlepower-7-quartz-halogen-motorcycle-headlight/

Not sure if its the exact one I have but same company -one of the bulbs has less draw for the same given output.

good luck
Andy
Current bikes
1. CB750K4: Long distance bike, 17 countries and counting...2001 - Trans-USA-Mexico, 2003 - European Tour, 2004 - SOHC Easy Rider Trip , 2008 - Adirondack Tour 2-up , 2013 - Tail of the Dragon Tour , 2017: 836 kit install and bottom end rebuild. And rebirth: http://forums.sohc4.net/index.php/topic,173213.msg2029836.html#msg2029836
2. CB750/810cc K2  - road racer with JMR worked head 71 hp
3. Yamaha Tenere T700 2022

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Offline david 750f

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Re: H4 brand?
« Reply #3 on: March 21, 2014, 04:53:32 AM »
Try the Philips Eco-Vision. have used them for years with no problem. As a bonus they draw 20% less power than a standard bulb.
If you are blowing bulbs on a regular basis do a thorough check of your charging system.

http://www.p4c.philips.com/cgi-bin/dcbint/cpindex.pl?ctn=12342ECO&scy=gb&slg=en
1976 CB 750F

Offline 70CB750

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Re: H4 brand?
« Reply #4 on: March 21, 2014, 05:16:45 AM »
Thank you, gentlemen.
Prokop
_______________
Pure Gas - find ethanol free gas station near you

I love it when parts come together.

Dorothy - my CB750
CB750K3F - The Red
Sidecar


CB900C

2006 KLR650

Offline bjbuchanan

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Re: H4 brand?
« Reply #5 on: March 21, 2014, 05:10:46 PM »
candlepower is a good one. I'm running it for a year now. It is a motorcycle type h4, little more vibration resistant I suppose
The dirty girl-1976 cb750k, Ebay 836, Tracy bodykit
Round top carbs w/ 38 pilots, middle needle position, airscrew 7/8ths out, 122 main jet
Stock airbox w/ drop in K&N, Hooker 4-1

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Offline Dave Voss

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Re: H4 brand?
« Reply #6 on: March 21, 2014, 07:55:10 PM »
Osram brand bulbs used to be one of the best for longevity, they were more expensive than others, but worth it.  Harder to find these days with all of the inexpensive ones on the shelf and available online, I suppose most folks are more interested in low price, and the quality follows...
-Dave Voss
(past) '78 CB550K4
(past) '75 CB550K1
(now) '95 R1100RSL