Just how old is the 911 fuse design? 1939 at least

[sugarwood]

Type 64 build in 1939
See the fuse box at 11:53
Dang !


upload pics


https://youtu.be/HaDWPBco07w?t=714

[manbridge 74]

And many cars besides Porsche still using the original design 50 or more years later. Why mess with a good thing?

[dafischer]

And the problem is?

[fred cook]

Originally Posted by dafischer

And the problem is?

Well, let's see........ small contact area of fuse to holder, builds corrosion which causes heat which causes holder failure. Some fuse sizes are getting hard to find. And, last but not least, old fuse holders such as found on Porsches tend to create electrical gremlins that can come and go driving the owner/mechanic crazy trying to track them down. A good solution is to replace the old VW style fuses with an updated panel that uses ATO/ATC type fuses like this.

[GH85Carrera]

Mercedes used that design of fuse as well. Many German car makers have used it.

[juanbenae]

Originally Posted by dafischer

And the problem is?

shug hates these cars... they drive like dump trucks apparently..

[manbridge 74]

Originally Posted by fred cook

Well, let's see........ small contact area of fuse to holder, builds corrosion which causes heat which causes holder failure. Some fuse sizes are getting hard to find. And, last but not least, old fuse holders such as found on Porsches tend to create electrical gremlins that can come and go driving the owner/mechanic crazy trying to track them down. A good solution is to replace the old VW style fuses with an updated panel that uses ATO/ATC type fuses like this.

Yeah, with bad maintenance practices many systems will fail on any old car. I see a lot of cars with hood gaskets missing or in horrible shape letting all kinds of weather inside allowing for corrosion. Also, I have seen cheap aluminum fuses, added wiring with no regard for amperage demands, etc. Many fuse boxes out there are working just fine and I see no reason to downgrade mine by “upgrading.”

[sugarwood]

Originally Posted by dafischer

And the problem is?

Who said problem?
I think it's awesome to be driving a car with 1930s technology in it!
VINTAGE

[RWebb]

I heard that Ben Franklin used that same fuse holder on the ladies in Paris

[fred cook]

Originally Posted by dafischer

And the problem is?

"To each his own!" In the case of my car, the original fuse blocks needed to be replaced. Rather than spending a couple hundred bucks on new blocks, I made the panel that uses the modern fuses for around a hundred dollars. The electrics have worked great ever since! Over a period of about 10 years I made several hundred of these panels for other disgruntled enthusiasts! Not everyone likes to have to "fiddle" with a car's electrics very often!

[ClickClickBoom]

Originally Posted by manbridge 74

Yeah, with bad maintenance practices many systems will fail on any old car. I see a lot of cars with hood gaskets missing or in horrible shape letting all kinds of weather inside allowing for corrosion. Also, I have seen cheap aluminum fuses, added wiring with no regard for amperage demands, etc. Many fuse boxes out there are working just fine and I see no reason to downgrade mine by “upgrading.”

They work fine until they don't. Dissimilar corrosion issues, my original holder worked fine, right up until it didn't. I found several corrosion welded to the posts requiring sandpaper to remove the debris. I tired of "spinning" the fuses every time, I changed the oil. Replaced the fuse blocks with the CCD units, fuse electrical stuff is last on my list of troubleshooting when chasing minor electrical gremlins.

[manbridge 74]

Brass legs on fuses and brass posts on fuse block provides no issues with dissimilar metals or galvanic corrosion.

[dafischer]

I guess it's a case of YMMV. I've had my 69 for 18 yrs., and changed out one front fuse box due to a buss bar problem on the box. Other than that, never an issue. I've had my 72 for 14 yrs., and never a problem. Both run original boxes.

[ClickClickBoom]

Originally Posted by manbridge 74

Brass legs on fuses and brass posts on fuse block provides no issues with dissimilar metals or galvanic corrosion.

Mine were some sort of pot metal silver in color.....

[manbridge 74]

Hard to know if you are getting the OE fuse type without holding it in your hand before you buy.