 Voltage Regulator, Replaced Bosch Unit with Hella Solid-State |
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| 1988Hawk |
 Jul 8 2013, 06:39 PM
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#1
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Newbie  Group: Members Posts: 41 Joined: 17-April 08 From: Chicago Member No.: 8,929 Region Association: None  |
Opinions Needed:
I replaced my Bosch unit which was putting out 12.8-13.0V to the Battery at idle, with Hella Solid-State Unit which is putting out 13.9V at idle. Is this OK, or too High? I have an Optima Battery. Thanks, Jim |
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| Rotary'14 |
Jul 8 2013, 06:43 PM
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#2
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Senior Member Group: Members Posts: 753 Joined: 24-April 05 From: Los Angeles Member No.: 3,977 |
QUOTE(1988Hawk @ Jul 8 2013, 05:39 PM)  Opinions Needed: I replace my Bosch unit which was putting out 12.8-13.0V to the Battery at idle, with Hella Solid-State Unit which is putting out 13.9V at idle. Is this OK, or too High? I have an Optima Battery. Thanks, Jim I think you will be fine. 13.9 is what new cars charge their batteries at. and you have a newer battery too. The only downside I can imagine is it might wear your alternator out quicker,,,,, but I doubt it. -Rob |
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| McMark |
Jul 8 2013, 11:16 PM
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#3
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
That's 100% right.
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| rick 918-S |
Jul 9 2013, 10:02 AM
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#4
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Hey nice rack! -Celette Group: Members Posts: 20,456 Joined: 30-December 02 From: Now in Superior WI Member No.: 43 Region Association: Northstar Region 
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(IMG:style_emoticons/default/thisthreadisworthlesswithoutpics.gif) Let's see it (IMG:style_emoticons/default/smile.gif)
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| Retread |
Jul 9 2013, 01:25 PM
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#5
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Newbie Group: Members Posts: 26 Joined: 5-March 06 Member No.: 5,672 |
I had a Hella solid state in my 912E which also had an Optima installed. The Hella failed and the battery was grossly overcharged, filled the front trunk with Sulpherous vapor. I had to have the car towed home after I gave the front trunk a Baking soda water bath. I replaced the regulator with a Bosch relay contact style and replaced the Optima. This happened back in 2000. The 912E engine and alternator are very similar to my 914 components. The regulators are also interchangeable. The alternator mounting ears are slightly different, and the 912E is slightly higher output, but otherwise very similar. I do not have any desire to ever use a solid state regulator on my 912E again, or on my 914 race car. |
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| Krieger |
Jul 9 2013, 02:45 PM
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#6
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Advanced Member Group: Members Posts: 4,707 Joined: 24-May 04 From: Santa Rosa CA Member No.: 2,104 Region Association: None
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The solid state didn't work in my 912E either. I think the charging light would not go out.I had to use an old style. The recommended alt rebuild shop came to this conclusion.
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| 1988Hawk |
Jul 9 2013, 03:36 PM
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#7
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Newbie Group: Members Posts: 41 Joined: 17-April 08 From: Chicago Member No.: 8,929 Region Association: None |
Pics attached.
So far, very happy with the unit, Bosch would go sub-12 with lights and heater on, Hella is right at 13V with lights and heater, 13.9V without. Jim   |
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| Drums66 |
Jul 9 2013, 05:54 PM
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#8
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914 Rudiments Group: Members Posts: 5,321 Joined: 15-January 03 From: Coronado,Cali Member No.: 151 Region Association: Southwest Region |
......I also use them(elect.,VR) on my classic U.S (IMG:style_emoticons/default/flag.gif) cars (mostly Ford's)
no issue's & they last in tandem with ALT. for years&years! (IMG:style_emoticons/default/idea.gif) (IMG:style_emoticons/default/bye1.gif) |
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