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914World.com _ 914World Garage _ Bosch Electrical cutoff

Posted by: DougC Jan 27 2005, 11:56 AM

Looking for thoughts on the elctrical cutoffs that Porsche used to use on there race cars, I've particularly seen them on 914-6 GT cars. They were usually mount them just ahead of the windshield and it's kind of a skinny aluminum "L" shaped handle. I noticed that AA was selling them in an oold catalog I have from them. I'm thinking of installing one on my street car and using it as a "theft deterant/preventer" if the Handle is removable - does anyone know? I know other types are removable but I like the old Bosche ones. Does anyone know another source for them?

Doug C

Posted by: Eric_Shea Jan 27 2005, 12:00 PM

They're not removable from the Bosch units.

Posted by: URY914 Jan 27 2005, 12:01 PM

I know which ones you mean and I think I've seen them in the classifeds of Vintage Motorsports magazine. But I don't know how was actually selling them.

Paul

Posted by: DougC Jan 27 2005, 01:31 PM

They're not removable from the Bosch units.

I Doubt the dumb thieves would even know what it was. But in one of the pictures in Vintage Racing this past month - The 914/6 Lufthansa GT car, I thought I saw it in one picture with a black rubber cap. I'll have to check that picture again. I'll also search the adds in that very magazine, thanks for the info.

Doug C

Posted by: sixnotfour Jan 27 2005, 01:42 PM

The Lever comes out on this one IPB Image Its a Bosch

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Posted by: Martin Baker Jan 27 2005, 01:45 PM

It does come out, bought mine from Parts Obsolete...notice the BOSCH part #

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Posted by: Martin Baker Jan 27 2005, 01:49 PM

Here is the super rare factory cap...

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Posted by: Martin Baker Jan 27 2005, 01:50 PM

Installed ...

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Posted by: Eric_Shea Jan 27 2005, 01:54 PM

My bad.

I was going to recommend Parts Obsolete as well as a source for the switch. Any Bosch dealer can get them. They're still on the books. You just need the part number.

I thought the old ones were not removable.

Thanks Martin! IPB Image

Doug, I was thinking the same thing... the idiots would probably give up before they gave it a turn

Posted by: Martin Baker Jan 27 2005, 01:57 PM

No problem, Oh and by the way, the SUPER DUPER Rare boot is from an old plug wire....

Posted by: sixnotfour Jan 27 2005, 01:59 PM

When you loose the super rare factory part , use a spark plug wire cap boot. Track Fix IPB Image

Posted by: Martin Baker Jan 27 2005, 02:01 PM

Got it...

Posted by: Martin Baker Jan 27 2005, 02:02 PM

Did you ever find a 100 MM filler neck? I saw your want add on the Samba.

Posted by: sixnotfour Jan 27 2005, 02:09 PM

Eric or I,

I think all 3 of us have adds on there, Ive got 2, you got the one in my back yard .SELAH WA. IPB Image
I am doing some for a couple of buddies 911/914.

Posted by: JOHNMAN Jan 27 2005, 02:10 PM

So, I'm thinking....

Did the GT cars have the battery relocated?

I didn't think so, but....

If these battery cut-off switches were located in the cowl area, did a battery cable get routed all the way from the battery to this switch and then to the rest of the car?

Do those switches have extra poles so that you can protect your alternator when you throw the switch while the car is running?

Just wondering.

Posted by: Martin Baker Jan 27 2005, 02:17 PM

I have seen photos in the front trunk and in the original location. With 914 GT cars, there are so many variations that anything goes. I think placement location may be requirment of regulation of the sanctioning body they race in, HSR, VARA, etc. Or personal preference. No extra poles on the switch. Just two large lugs.

Posted by: Martin Baker Jan 27 2005, 02:22 PM

The FIA made the car carry a spare tire as well, so in the day...the battery stayed in original location...This is the SONAUTO car in the photo.

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Posted by: Eric_Shea Jan 27 2005, 02:34 PM

I was wondering the same thing about the wiring. Maybe we should e-mail Jon Lowe and see what he was doing for his. I've only been up close and personal with 1 GT and I didn't get to see the battery cut-off wiring.

I've got my 100mm filler neck, if I'm the one you were referring to.

I measured and cut the filler off. I've also cut the hole out for the overflow tube. Now I need to glass bead it and weld it into my 914 filler neck assembly. I was going to leave the stock 914 neck inside but I think I'm going to cut it out with a 2 1/2" hole saw, leaving the mounting holes on the "inside" of my 100mm neck. POR everything back up and bolt it to the tank. I've bead blasted the stock neck assembly and I've got the cap... now I just need one of those pesky tabs that "someone" has made up IPB Image

Doug... sorry for the high-jack!

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Posted by: Eric_Shea Jan 27 2005, 02:36 PM

Assembled... (still missing that beautiful tab) IPB Image

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Posted by: VegasRacer Jan 27 2005, 03:05 PM

QUOTE (Martin Baker @ Jan 27 2005, 12:17 PM)
I think placement location may be requirment of regulation of the sanctioning body they race in

I don't know what the rules were in the '70's. Currently there are no specifics in HSR, VARA, POC, PCA, NASA or SCCA as to where the cut-off switch needs to be placed. Put it where ever you want as long as you label it with one of these decals.

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Posted by: sixnotfour Jan 27 2005, 03:22 PM

IPB Image
Some had one between the seat (driver /Pass. reach) and on the Cowl for the Saftey Crew easy access. You could kill the power either place to the electricals and or spark to Flame in case of a Stint

Posted by: Series9 Jan 27 2005, 03:31 PM

Here's mine:

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Posted by: Jeroen Jan 27 2005, 04:12 PM

Does the Bosch unit have 2 or 6 connections?
If it only has 2, you can fry your altenator by using it...
And it may not be legal if your racing it

Posted by: DougC Jan 27 2005, 04:21 PM

So, if it only has 2 connectors would there be any danger in using it once the engine is turned off on a mostly street car. Also where can I get that "OFF" sticker with the volts symble? And don't worry about the hi-jack - it's exactly what I want to do too.

Doug C

Posted by: Martin Baker Jan 27 2005, 04:45 PM

QUOTE (Martin Baker @ Jan 27 2005, 01:17 PM)
No extra poles on the switch. Just two large lugs.

I was refering to location of the battery, not the switch...FIA stated that it would carry a spare tire in the GT Class, and if you know anything about the GT cars, you know it was between the oil cooler shroud and the 100 liter fuel tank. When the car is up against barrier, smashed to HELL, maybe even on fire (electrical or otherwise), who cares about an alternator. This switch was strictly for saftey. If you are worried about your alternator in a motorsport type accident, I am not sure I understand. Reason would tell you that this switch will work for anti-theft, just don't use it to switch off your car, use the key. GT Racing has the vintage type decal for the kill switch...

http://www.gt-racing.com/catalog/default.htm

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Posted by: Jeroen Jan 27 2005, 05:07 PM

QUOTE (Martin Baker @ Jan 28 2005, 12:45 AM)

QUOTE (Martin Baker @ Jan 27 2005, 01:17 PM)
No extra poles on the switch. Just two large lugs.

Musta missed that while speed reading IPB Image

QUOTE
This switch was strictly for saftey. If you are worried about your alternator in a motorsport type accident, I am not sure I understand. Reason would tell you that this switch will work for anti-theft, just don't use it to switch off your car, use the key.

Most racing sanctioning bodies require a 6 connection kill switch now a days...