View Full Version : Converting my stock ignition

07-02-2009, 05:32 AM
Hi guys
I am thinking of converting my stock ignition system to a breakerless electronic ignition system
Is the PERTRONIX "Ignitor II" system on offer at classicbuicks.com website any good
Does anybody have any experience with this system?

07-02-2009, 09:05 AM
Hi Erik,

I installed the Crane XR-i points conversion kit and is very happy with it so far. Think it costed me 66 dollars.
Very easy to install and you don’t need to mess with removing any ballast resistor (the unit requires same resistance as the pointers).

I saw something on the v8-forum that Crane has went out of business, so I’m not sure if the XR-I is still on the market?

I heard from a colleague that Ignitor I could get fried if you left the ignition ON with the motor off, this had been corrected on the Ignitor II though.

Adam, if you read this, do you know if that is a problem on the XR-I as well?

The German
07-02-2009, 10:04 AM
Erik and Per, I found this :

1.) PDF-file with installation instructions:

2.) Installation advice of a Mustang site:

3.) ... what Per told us ...:

4.) probably the correct part also for your car, Erik (??):
http://cgi.ebay.com/ebaymotors/CRANE-XR-I-FORD-57-74V8-POINTS-CONVERSION-KIT-750-1700_W0QQcmdZViewItemQQ_trkparmsZ65Q3a12Q7c66Q3a2Q 7c39Q3a1Q7c72Q3a1205Q7c293Q3a1Q7c294Q3a50QQ_trksid Zp3286Q2ec0Q2em14QQhashZitem3a50514af1QQitemZ25045 5608049QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccesso ries

Good luck !

07-02-2009, 10:13 AM
Hi Per
I have read that some of you guys had converted to Crane XR-1
But i can't find any available for our cars by for instance Summit

Further more i don't have a ballast resistor on my car only an empty bracket on the inner left fender where a resistor you st to be :confused:
That is why i want to change the whole ignition including the coil but still maintaining the stock look

And i believe that leaving the ignition on is bad for a modern car as well

73 Centurion
07-02-2009, 10:24 AM

I've had the Pertonix unit installed for years and never had a moments trouble with it.

It fits under the distributor cap and is invisible. I've checked the dwell a couple of times out of curiosity and it is perfect every time.

Our cars don't have a ballast resistor. The wire that runs from the firewall to the coil has the resistance built into it. The resistance prolongs the life of the points. Without points you don't need the resistance. You can use the resistance wire with the Pertronix, or you can replace the wire and have a bit more voltage to your coil.

I had a break in that resistance wire so I replaced it when I upgraded to the Pertronix. I like the Pertronix because it uses a magnetic pick up. Some of the other systems use an optical sensor and I thought that might eventually get dirty or the light might burn out. But those might be irrational fears. :confused4:

I keep a spare set of points in the glovebox just in case. Here's a tip I learned from one of those old mechanics who knew all the tricks. The cover of a matchbook cover is almost the perfect thickness for setting points. If you have to make a roadside repair you can use that to set the dwell. It will be close enough to get you home. You can turn over most V8 engines by pressing down on the fan belt and pulling up on the fan blade. This will let you put the distributor in the perfect position for setting the dwell.


07-02-2009, 05:00 PM
The Crane XR-i is no longer available. Crane is out of business.

07-03-2009, 05:20 AM
Thanks guys
I am affraid that the ground plate from the Ford igintionmodule is diffrent then ours but i am not sure
The type you linked to is also available at Summit but only listed for Ford

What type of system did you used I or II ?

73 Centurion
07-06-2009, 04:27 PM
I'm pretty sure it's type I.

The German
07-07-2009, 03:11 AM
... ... Rolf I am affraid that the ground plate from the Ford igintionmodule is diffrent then ours but i am not sure.
The type you linked to is also available at Summit but only listed for Ford. ... ...

As I was told from Adam (Smartin) the unit at my distributor is such a Crane 750-1700 XR-I Points-to-Electronic Ignition Conversion Kit; I never looked to it and so I donīt know whether you can read the specification on the part itself but I guess Adam made no mistake when he told me the specification. This means the unit currently sold at Ebay should be the correct one - as far as I know there is no difference between the Centurions of 1971 and 1973 in the ignition system ! But what I donīt know of course is whether Crane produced different type of units for different cars under the same specification ! You probably could phone with S&S (Phone: 1-608-627-1497 (http://www.sscycle.com/modules/contact/ )) because they wrote that they would intend to continue to sell Crane products ( ) and ask them for details. But the time is short - only 19 hours left at Ebay ... !

To be sure I searched for the post where Adam told the specification of the Crane XR-i-kit but could only find a link to Jegs which now is removed because Crane parts are not available at the time; but the link has the specification 750-1710 in the line so that I now donīt know what is correct 750-1700 or 750-1710 !!! The link was : http://www.jegs.com/i/Crane/270/750-1710/10002/-1
Erik if you want to be sure I recommend you to phone with the specialists !!!

07-07-2009, 05:49 AM
I think it's the 1710.

07-07-2009, 06:06 AM
I think it's the 1710.
Yep, that’s what I installed too…

07-07-2009, 02:35 PM
Thanks for the advice and suggestions guys
Due to the fact that the unavailability of the correct Crane XR-1 kit and the encouraging words from John
I've just ordered the Pertronix kit along with some other parts i needed

07-08-2009, 10:21 PM
I've installed the pertronix setup on a couple of cars, each resulting in easier starting and good operation. Just in case of failure, I placed the points/condensor and rotor in a bag in the glovebox, but after a few years, no issues.