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pupjoint
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Joined: May 23, 2007
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Glenn 
Mr. 010
Joined: December 25, 2001
Posts: 76940
Location: Sneaking up behind you
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 Posted: Fri May 26, 2017 5:28 pm Post subject: Re: resistorless rotor for 010/019 distributors |
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Bosch 04 008 is for a rotor that has a resistor.
I have this one, email me if interested.
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Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
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Glenn
Mr. 010
Joined: December 25, 2001
Posts: 76940
Location: Sneaking up behind you
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| Posted: Fri May 26, 2017 5:37 pm Post subject: Re: resistorless rotor for 010/019 distributors |
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I think I also have one of these still available.
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Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
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pupjoint
Samba Member
Joined: May 23, 2007
Posts: 1140
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| Posted: Fri May 26, 2017 5:53 pm Post subject: Re: resistorless rotor for 010/019 distributors |
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| you have mail Glenn. |
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Lingwendil
Samba Member
Joined: February 25, 2009
Posts: 3988
Location: Antioch, California, a block from the hood
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mondshine
Samba Member
Joined: October 27, 2006
Posts: 2770
Location: The World's Motor Capital
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| Posted: Sat May 27, 2017 7:14 pm Post subject: Re: resistorless rotor for 010/019 distributors |
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An easy fix for a stock rotor when used with CDI is to solder a brass strip across the top between the center and outer contacts.
Here's the type of brass strips I use:
KS Metals 8230 .016 x 1/4 x 12"
Most hardware stores sell this stuff.
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tasb
The Distributor Distributor
Joined: April 27, 2002
Posts: 6371
Location: Pentwater, Michigan
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| Posted: Sat May 27, 2017 8:52 pm Post subject: Re: resistorless rotor for 010/019 distributors |
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There are lot's of inexpensive high quality replacements for this rotor out there. It was a very common part on Bosch distributors from 1950 until well into the 1970's on many makes.
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Lingwendil
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Location: Antioch, California, a block from the hood
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saw2
Samba Member
Joined: November 06, 2008
Posts: 321
Location: nw Oregon
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| Posted: Sat May 27, 2017 9:13 pm Post subject: Re: resistorless rotor for 010/019 distributors |
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It takes a little work. I have done this procedure on a few rotors to get rid of resistor. Havent had any problems with any of them.
http://www.huelsmann.us/bugman/RotorTech.html |
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pupjoint
Samba Member
Joined: May 23, 2007
Posts: 1140
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| Posted: Sun May 28, 2017 12:17 am Post subject: Re: resistorless rotor for 010/019 distributors |
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| Thanks guys. Yes running a cdi. |
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67rustavenger
Samba Member
Joined: February 24, 2015
Posts: 9772
Location: Oregon
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| Posted: Sun May 28, 2017 6:00 pm Post subject: Re: resistorless rotor for 010/019 distributors |
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Hey saw2, Great meeting you last weekend at Avery's car show. Hope to see ya this coming weekend at NW Bug Run.
Is there an advantage running the resistorless rotor on a non cdi ignition system? We talked about your buggy and it's ignition system. I get that it would help on a cdi system.
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Lingwendil
Samba Member
Joined: February 25, 2009
Posts: 3988
Location: Antioch, California, a block from the hood
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| Posted: Sun May 28, 2017 11:34 pm Post subject: Re: resistorless rotor for 010/019 distributors |
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| 67rustavenger wrote: |
Hey saw2, Great meeting you last weekend at Avery's car show. Hope to see ya this coming weekend at NW Bug Run.
Is there an advantage running the resistorless rotor on a non cdi ignition system? We talked about your buggy and it's ignition system. I get that it would help on a cdi system. |
Not who you are asking, but it is almost essential to run a resistorless rotor with CDI, otherwise you will burn up the resistor inside the rotor due to heat dissipation. It depends on the CDI at times, stuff like the Delta, Tiger, or Winterburn stuff is a bit more easy on parts, but on something that is poorly designed with huuuge overvoltage (such as MSD) you will tend to eat parts if they aren't low resistance.
For non-CDI, I tend to like a bit more spark power available, and like to limit resistance in the rotor, coil, and leads as much as I can.
Lower resistance means less voltage drop across the rotor, which means less heat, and therefore longer life. It also keeps more of the voltage intact before it hits the load (plug gap) so it's a bit more efficient. anything from 0-100 ohms is usually fine since most rotors have a 5000 ohm or so resistor built in. the one I linked from Napa is 50 ohm- 1/100th the resistance and negligible for our purposes, although one without a resistor is probably "better" on paper, in practice it won't cause any fuss to go with something around there.
When I was designing and building my own CDI systems I found that anything under a couple hundred ohms worked as well as a non-resistor rotor, and this allows you to use some of the SMP/Eichlin brand stuff available at Napa that is a bit nicer than new bosch, and a fraction of the cost of NOS parts. If the car is a daily driver and your concerns start with reliability and function, affordable parts that fulfill those needs sure are nice 
Even on non-CDI setups I still prefer a low or zero resistance in my rotor, and low-resistance wires. Add a real transformer-type coil and you will have a ton of spark energy, and will get 90% of the "benefit" of a decent CDI system.
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chrisflstf
Samba Member
Joined: February 10, 2004
Posts: 3446
Location: San Diego
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| Posted: Fri Jul 31, 2020 7:13 pm Post subject: Re: resistorless rotor for 010/019 distributors |
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| Lingwendil wrote: |
| tasb wrote: |
| There are lot's of inexpensive high quality replacements for this rotor out there. It was a very common part on Bosch distributors from 1950 until well into the 1970's on many makes. |
I personally run these, measures at 50 ohms, rather than the current production sloppy-fit Bosch that run 5000 ohms-
https://www.napaonline.com/en/p/ECHEP278
If I were buying one to modify myself that's where I would start. As it sits now though it's a great choice for a higher energy system, and would probably work just fine on the average CDI system. |
For anyone looking for a non-resistor rotor for their 010, Napa sells these under the Echlin brand, made in Mex. $9. Seem good quality, Zero ohms, Bosch on right, 5K Ohms
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