| 73 hei conversion [message #192439] |
Thu, 06 December 2012 22:46  |
Derick Stephens
Messages: 2
Registered: March 2012
Karma: 0
|
Junior Member |
|
|
I am currently rebuilding my 73 sequoyah. What is my most reasonably priced method of converting the points to an hei distributor. I was setting my timing and was showing a big fluctuation in the rpm using coil wire 1 and an engine analyzer. It does seem to be missing. New wires and plugs, but not points. I really just want it to be reliable.
does anyone have a used distributor that could be purchased. Thanks in advance for your assistance.
|
|
|
|
| Re: 73 hei conversion [message #192442 is a reply to message #192439] |
Thu, 06 December 2012 23:05  |
Cadillackeeper
Messages: 464
Registered: October 2012
Location: Fort Lauderdale
Karma: 1
|
Senior Member |
|
|
Points are cheap easy and reliable,Hell they only used them for almost 100 years.I
feel you could have worn bronze gear on the disto shaft or worn timing chain.Do
you have a proper 30 degree angle?
77 455 Elaganza II and 67 Animal, Built 500 Powered Eldo
|
|
|
|
| Re: 73 HEI conversion [message #192443 is a reply to message #192439] |
Thu, 06 December 2012 23:10 |
midlf
Messages: 2212
Registered: July 2007
Location: SE Wisc. (Palmyra)
Karma: 1
|
Senior Member |
|
|
| Derick Stephens wrote on Thu, 06 December 2012 22:46 |
I am currently rebuilding my 73 sequoyah. What is my most reasonably priced method of converting the points to an HEI distributor. I was setting my timing and was showing a big fluctuation in the rpm using coil wire 1 and an engine analyzer. It does seem to be missing. New wires and plugs, but not points. I really just want it to be reliable.
does anyone have a used distributor that could be purchased. Thanks in advance for your assistance.
|
The easiest solution is to convert your points distributor to electronic using a Pertronix module. That way you do not have to do the sheet metal knocking on the air cleaner housing. Also you will not have the problems with HEI module and coil failures. If you can afford it the BEST way is to get a redone distributor from Dick Paterson (Springfield Ignition) along with a dist cap with HEI style posts and use the HEI type wires. A new high output coil is a good upgrade at this time. The other modifications needed (bypassing the ignition ballast wire) is the same for either the Pertronix points conversion or the HEI conversion.
Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
|
|
|
|
| Re: 73 hei conversion [message #192444 is a reply to message #192439] |
Thu, 06 December 2012 23:17 |
Cadillackeeper
Messages: 464
Registered: October 2012
Location: Fort Lauderdale
Karma: 1
|
Senior Member |
|
|
Sorry about the hasty reply,I still have points in my car.They cost under $10.Every
person ever that sees my car tells me to get rid of them.I have to always still be
smarter than the car.The cool thing for me would be going from a 30 gap to a 60
and blasting a nice spark.I also feel that the latest Petronix version lets you keep
the 7-9 volts from the resistor wire.Best of luck no matter what you try.
77 455 Elaganza II and 67 Animal, Built 500 Powered Eldo
|
|
|
|
|
|
|
|
| Re: [GMCnet] 73 hei conversion [message #192496 is a reply to message #192489] |
Fri, 07 December 2012 12:15 |
Jim Bounds
Messages: 842
Registered: January 2004
Karma: 0
|
Senior Member |
|
|
My suggestion when you want to upgrade to HEI for the 73 & 4 coaches is just replace the entire dist to the later model unit. Replacement module, coil, pickup, cap and rotor can be had anywhere so maintenance of the system is increased. We have a complete, all new HEI late model dist with new cap, rotor, module, pickup, coil and all for $195. You would need new plugs (Delco rapid fire #7) and a new HEI plug wire set but putting all that in you have an all new high voltage ignition system. Pitch that old dist completely, chances are the bushings are worn out anyway,
Jim Bounds
--------------------
________________________________
From: Dan Gregg <gregg_dan@hotmail.com>
To: gmclist@temp.gmcnet.org
Sent: Friday, December 7, 2012 12:19 PM
Subject: Re: [GMCnet] 73 hei conversion
Dick, where are you located? I may have missed that. I have a 74 that has the hei. If you plan to keep the GMC, for use, then do it right. I have Pertronics in my Mustang and Vdub but in the GMC we have a newer Dick Paterson hei distributor. Do it once and be done. Move on to next project.
Dan
--
Dan & Teri Gregg
http://danandteri.blogspot.com/
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
|
|
|
|
| Re: 73 hei conversion [message #192497 is a reply to message #192439] |
Fri, 07 December 2012 12:21 |
|
|
Derick Stephens wrote on Thu, 06 December 2012 20:46]I am currently rebuilding my 73 sequoyah. What is my most reasonably priced method of converting the points to an hei distributor. I was setting my timing and was showing a big fluctuation in the rpm using coil wire 1 and an engine analyzer. It does seem to be missing. New wires and plugs, but not points. I really just want it to be reliable.
Hi Derick, I bought the MSD type distributor from Dick Patterson. It works very well and can use it with the standard size air cleaner. It has never needed repairs (2 years) that the guys with the HEI type always talk about.
geo groth '73 260 Sequoia
Carson City Nevada 89703
|
|
|
|
| Re: [GMCnet] 73 hei conversion [message #192506 is a reply to message #192462] |
Fri, 07 December 2012 14:02 |
mickeysss
Messages: 1476
Registered: January 2012
Karma: 0
|
Senior Member |
|
|
THanks rob, i need to look into this some time, i still have the red one what ever that is.
i think it is the original.
mickey
77 palm beach
anaheim ca.
On Dec 7, 2012, at 5:03 AM, Rob Mueller wrote:
> Derick,
>
> If you intend to keep your GMC for a reasonable length of time I would suggest you buy a distributor from Dick Patterson. He
> customizes the advance curve to your coach taking into consideration the final drive ratio, if you tow, and other stuff I've
> forgotten!
>
> You can contact him on: http://www.paterson-gmc.com/contact/
>
> Regards,
> Rob M.
>
>
> -----Original Message-----
> From: Derick Stephens
>
> I am currently rebuilding my 73 sequoyah. What is my most reasonably priced method of converting the points to an hei distributor.
> I was setting my timing and was showing a big fluctuation in the rpm using coil wire 1 and an engine analyzer. It does seem to be
> missing. New wires and plugs, but not points. I really just want it to be reliable.
>
> does anyone have a used distributor that could be purchased. Thanks in advance for your assistance.
>
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
|
|
|
|
| Re: [GMCnet] 73 hei conversion [message #192560 is a reply to message #192506] |
Sat, 08 December 2012 15:40 |
tphipps
Messages: 3005
Registered: August 2004
Location: Spanish Fort, AL
Karma: 9
|
Senior Member |
|
|
Mickey, Red may indicate a Dick Patterson, since every distributor that I have seen from him is red. Including Mine.
Do not use Rapidfire plugs. The design has been changed are they are not the same plug as they used to be. The recommended plug is NGK XR5IX, gapped at 0.038. (per Dick Patterson)
Tom, MS II very happy with Dick Patterson Carb and soon to be installed HEI.
2012 Phoenix Cruiser model 2552
KA4CSG
|
|
|
|
GMCforum
Search
Help
Register
Login
Home
