Bosch Distributor Rev-limiting Rotor links

tekenaar · 12-06-2006

Thought I had posted this before, but could only find vague references I made in previous posts regarding Bosch Rev-limiting rotors, and no links to where to purchase them.

Bosch manufactured two different Rev-limiting rotors, 5800RPM and 6500RPM, for their distributors used in 1970-71 Porsche 914/6 models. The Porsche 914 distributors are essentially the same internally as our venerable Opel CIH distributors, ergo their rotors can also be used in ours.

Bosch #04030 is the 5800RPM rotor and Bosch #04023 is the 6500RPM rotor. Both rotors can be ordered from RockAuto.com for about $25 each. Just go to their site and look under 1970 Porsche 914/6 - Ignition - Distributor Rotor where you'll find both listed in the resulting dropdown menu.

opeletti75 · 12-06-2006

whats a rev limiting rotor,is it the obvious?

N61WP · 12-06-2006

They also make a 7200 rpm. I'm using a 6500 and it works as advertised. It is basically a centrifugal switch inside the rotor that activates (grounds out) at a specific RPM to act as a rev limiter.

Jc

tekenaar · 12-07-2006

Originally Posted by N61WP

They also make a 7200 rpm. I'm using a 6500 and it works as advertised. It is basically a centrifugal switch inside the rotor that activates (grounds out) at a specific RPM to act as a rev limiter.

Jc

I knew that (actually 7100RPM), but could not find a source or P/N number for the 7100RPM rotor at the time of my post . . . should've looked in my e-mail archives, found it there.

3 flavors of Bosch rev-limit rotors: 5800, 6500, 7100 . . . available here. BTW, those are vendor, NOT Bosch, P/Ns below!

baz · 12-07-2006

as to how it works
as it spins the horse shoe shaped bit under the centre copper contact slides out to the contact point on the lower left and grounds the charge from the coil so cutting the spark to the plugs dead till the revs come down and the spring inside pulls the slider back off the ground point

hth

opeletti75 · 12-07-2006

thanks for the info baz cheers

Tru-Craft · 12-07-2006

Thanks Otto!
Will order one, to keep me from beating on my GT too much!
Hey the 7,100 is cheaper...........I guess they want us to rev it up!

Lyle

12-06-2006	#1 (permalink)
tekenaar Cunning Linguist Join Date: Mar 2002 Location: Plano, TX 75074 Posts: 4,441 Real Name: Otto	Bosch Distributor Rev-limiting Rotor links Thought I had posted this before, but could only find vague references I made in previous posts regarding Bosch Rev-limiting rotors, and no links to where to purchase them. Bosch manufactured two different Rev-limiting rotors, 5800RPM and 6500RPM, for their distributors used in 1970-71 Porsche 914/6 models. The Porsche 914 distributors are essentially the same internally as our venerable Opel CIH distributors, ergo their rotors can also be used in ours. Bosch #04030 is the 5800RPM rotor and Bosch #04023 is the 6500RPM rotor. Both rotors can be ordered from RockAuto.com for about $25 each. Just go to their site and look under 1970 Porsche 914/6 - Ignition - Distributor Rotor where you'll find both listed in the resulting dropdown menu. __________________ 1960: ♥ '61 Rekord PII 1.7 3S 3.9 ♥ '69 Kadett LS 'sprint' 1.9 3A 3.18 1970: ♥ '70 GT 1.9 4S 3.44 ♥ '72 GT 2.2SSD 5S 3.44 ♥ '72 GT 2.4FI 5S 3.44P ♥ '73 GT 1.9FI 4S 3.44 ♥ '75 1900 1.9FI 4S 3.44 1980: ♥ '85 Bitter SC 3.9FI 5S 3.44P 2000: ♥ '09 Solstice GXP Coupe 2.0 SIDI VVT Turbo 5S 3.73P

12-06-2006	#2 (permalink)
opeletti75 opeletti75 Join Date: Oct 2006 Location: rockvile ct Posts: 422 Real Name: mike poletti	rev rotor whats a rev limiting rotor,is it the obvious?

12-06-2006	#3 (permalink)
N61WP Member Join Date: Mar 2002 Location: New Orleans, La Posts: 564 Real Name: James	They also make a 7200 rpm. I'm using a 6500 and it works as advertised. It is basically a centrifugal switch inside the rotor that activates (grounds out) at a specific RPM to act as a rev limiter. Jc __________________ "If you have complete control of the car, you're not going fast enough". PARNELLI JONES 1966 Last edited by tekenaar; 12-08-2006 at 08:33 AM.

12-07-2006	#5 (permalink)
baz opel free after 26 years Join Date: Jun 2002 Location: sunderland england Posts: 4,941 Real Name: barry williams	as to how it works as it spins the horse shoe shaped bit under the centre copper contact slides out to the contact point on the lower left and grounds the charge from the coil so cutting the spark to the plugs dead till the revs come down and the spring inside pulls the slider back off the ground point hth __________________ Copyright © 2003-2009 barry williams All Rights Reserved save praying to God for sunday today we pray to Nike and run like hell

12-07-2006	#6 (permalink)
opeletti75 opeletti75 Join Date: Oct 2006 Location: rockvile ct Posts: 422 Real Name: mike poletti	rotor rotor thats the name thanks for the info baz cheers

12-07-2006	#7 (permalink)
Tru-Craft 1970-GT Join Date: Sep 2005 Location: Clearwater, Florida Posts: 1,237	Thanks Otto! Will order one, to keep me from beating on my GT too much! Hey the 7,100 is cheaper...........I guess they want us to rev it up! Lyle

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