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| Re: Help! points for '73 455? [message #107771 is a reply to message #107768] |
Tue, 07 December 2010 07:01   |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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| Dave Martin wrote on Tue, 07 December 2010 07:34 |
Yikes!
I burned my points by turning the ignition on (without running the engine) to run the air pump before traveling! Dummy! (but I didn't know it had points!)
Now I am stuck with sub freezing weather threatening my plumbing. I made it overnight ok, but cannot last many nights, so it is important to get these points replaced.
Will any '73 Olds Toronado points & condenser be ok? (NAPA gives me 11 options!)
I am having a hard time working on the points because the centrifugal advance mechanism above the points is in the way...I see no way to remove it 
Dave (in Dunnellon FL & eager to escape!)
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Dave,
Yes, any set of points for GM anything will do.
If the set currently installed has the attached condenser, buy the new set the same way.
To get the advance out of the way, bump the starter.
Once you get running, plan on spending the 90$ of the Pertronix replacement.
The suspension pump should run in accessory mode. Mine does.
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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| Re: Help! points for '73 455? [message #107774 is a reply to message #107773] |
Tue, 07 December 2010 07:25 |
C Boyd
Messages: 2629
Registered: April 2006
Karma: 18
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| Dave Martin wrote on Tue, 07 December 2010 08:11 |
| mcolie wrote on Tue, 07 December 2010 07:01 |
...
Yes, any set of points for GM anything will do.
If the set currently installed has the attached condenser, buy the new set the same way. ...
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Thanks for the helpful answer!
Existing points have separate condenser, but I wouldn't mind switching to integrated type(local NAPA has both types in stock.) However I worry that setting point gap might be hard with integrated condenser type; true? Setting gap with original is hard enough!
Dave
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Sir: Working from memory,I believe the integrated points set with an allen wrench thru thru a window. They should be pre-set to start and run. I believe after you get it started turn the allen wrench slowly to the left till it quits and then turn it right 1/2 turn, This should give the desired 28-30 degrees of dwell.
C. Boyd
76 Crestmont
East Tennessee
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| Re: Help! points for '73 455? [message #107775 is a reply to message #107774] |
Tue, 07 December 2010 07:36 |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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Senior Member |
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| C Boyd wrote on Tue, 07 December 2010 08:25 |
| Dave Martin wrote on Tue, 07 December 2010 08:11 |
| mcolie wrote on Tue, 07 December 2010 07:01 |
...
Yes, any set of points for GM anything will do.
If the set currently installed has the attached condenser, buy the new set the same way. ...
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Thanks for the helpful answer!
Existing points have separate condenser, but I wouldn't mind switching to integrated type(local NAPA has both types in stock.) However I worry that setting point gap might be hard with integrated condenser type; true? Setting gap with original is hard enough!
Dave
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Sir: Working from memory,I believe the integrated points set with an allen wrench thru a window. They should be pre-set to start and run. I believe after you get it started turn the allen wrench slowly to the left till it quits and then turn it right 1/2 turn, This should give the desired 28-30 degrees of dwell.
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Dave,
Chuck is not wrong.
But if you need to get started now, screw in the new points and start it up. If you have not moved the distributor, use the allen wrench through the slide open window to set the timing to mark. All will be well enough to run. Dwell is much less critical than timing.
Good Luck Guy.
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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| Re: Help! points for '73 455? [message #107811 is a reply to message #107776] |
Tue, 07 December 2010 11:48 |
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Dave, unless you unbolted the 9/16 bolt at the base of the distributor your timing should be same as before. Just pop in the points and set the gap if necessary with a feeler gauge. I have an HEI dizzy installed so no muss or fuss with points. Actually an alternative to the 90 petronix is to go to your local mens mall when you get the chance, and pull an HEI dizzy from a later model olds, there is some basic wiring involved and you can find detailed instructions on the net to get it done. But for now the points will get you back on the road. Also get that propane filled when you can, your furnace is your best friend when uts cold. Also do you still have the stock Onan? Shouldn't be much trouble to get that beast running again, but that's for another time...
| Dave Martin wrote on Tue, 07 December 2010 07:48 |
| mcolie wrote on Tue, 07 December 2010 07:36 |
But if you need to get started now, screw in the new points and start it up. If you have not moved the distributor, use the allen wrench through the slide open window to set the timing to mark. All will be well enough to run. Dwell is much less critical than timing.
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I have not moved the distributor.
You say "screw in the new points and start it up" does this include setting gap or will gap be preset close enough with Echlin (NAPA) parts?
Should I prefer integrated or separate condenser?
"Set timing to mark" - you mean with timing light? I have none available (nor experience unfortunately!)
Dave (happy the sun is up & it will soon be above freezing!)
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73 Canyon Lands, (a.k.a. The Yellow Submarine) West Los Angeles CA
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| Re: Help! points for '73 455? [message #107816 is a reply to message #107776] |
Tue, 07 December 2010 12:17 |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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Senior Member |
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| Dave Martin wrote on Tue, 07 December 2010 08:48 |
| mcolie wrote on Tue, 07 December 2010 07:36 |
But if you need to get started now, screw in the new points and start it up. If you have not moved the distributor, use the allen wrench through the slide open window to set the timing to mark. All will be well enough to run. Dwell is much less critical than timing.
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I have not moved the distributor.
You say "screw in the new points and start it up" does this include setting gap or will gap be preset close enough with Echlin (NAPA) parts?
Should I prefer integrated or separate condenser?
"Set timing to mark" - you mean with timing light? I have none available (nor experience unfortunately!)
Dave (happy the sun is up & it will soon be above freezing!)
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Dave,
Sorry for the delay. The morning read had to be interrupted.
The points as shipped will probably be close enough to run without adjustment. They usually were.
Important: GM points were slotted - Do not remove the mounting screws - just loosen them a turn or two - No More. Look at the replacement set for a clue. Be sure you get them all the way home in the slots.
Unlike others, GM points did not adjust by moving the assembly on the base plate.
Integrated condenser? Makes no difference unless you are trying to make a flat rate hour as a line mechanic. The integrated version are easier to install. (I like the separate so it can be disconnected for a diagnostic procedure. - Just for old gear heads.)
OLD RULE OF THUMB: 8-18-28
Most every engine will run with:
Timing set at 8*BTDC
Points set at .018" gap
Plugs gapped to .028"
It may not be the best, but I have never known it to not work.
You have to have a timing light to get things correct. I bet once you get it to run you can get it to someplace close by (like and Autozone) that can get you to a timing light.
Be sure you read the manual about setting timing. It requires vacuum lines to be plugged and idle speed be correct.
Let us know how it goes.
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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| Re: Help! points for '73 455? [message #107842 is a reply to message #107833] |
Tue, 07 December 2010 16:40 |
roy1
Messages: 2126
Registered: July 2004
Location: Minden nevada
Karma: 6
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[That is before my time what would an 1857 GMC look like?
quote title=CBWoodSR wrote on Tue, 07 December 2010 13:09]It fits all GMC's from 1857 to 1974..
..Distributor: 1857-1974 GM various models[/quote]
Roy Keen
Minden,NV
76 X Glenbrook
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| Re: Help! points for '73 455? [message #107892 is a reply to message #107833] |
Wed, 08 December 2010 08:40 |
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mike miller
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
Karma: 0
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| CBWoodSR wrote on Tue, 07 December 2010 13:09 |
It fits all GMC's from 1857 to 1974..
..Distributor: 1857-1974 GM various models
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I suspect that is a typo. Funny though.
Other things to keep in mind when upgrading from points.
Pertronix modules come in three types: Ignitor, Ignitor II, and Lobe Sensor. For our proposes, the Ignitor II, and Lobe Sensor have more protection (over the original Ignitor) from burning out when left on. The Lobe Sensor should be easier to install, as there isn't a magnet ring. The Pertronix "1181" (and 1181LS) is the unit for GM non-HEI disributors. JimK has the LS module on his site: <http://www.appliedgmc.com/prod.itml/icOid/775.
Note: I use the same "1181" unit for the Onan. As the control board will remove power when the Onan isn't running, the original (cheapest) is all you need.
Someone suggested a junkyard HEI unit. If you upgrade to HEI, try and find a unit from a motorhome. It has a different advance curve than a car or truck. You'll also need an Toro/Motorhome HEI air cleaner.
If I still had points I would either install a LS from JimK or get a Dick Paterson (Springfield Ignition) distributor. <http://www.springfield-ignition.com/>
Mike Miller -- Hillsboro, OR -- on the Black list
(#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
More Sidekicks than GMC's and a late model Malibu called 'Boo'
http://m000035.blogspot.com
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| Re: Help! points for '73 455? [message #107897 is a reply to message #107889] |
Wed, 08 December 2010 11:02 |
roy1
Messages: 2126
Registered: July 2004
Location: Minden nevada
Karma: 6
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Senior Member |
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That was my first thought 2nd was 1957. I guess you were just testing us to see if we were really reading your post.
Roy
| CBWoodSR wrote on Wed, 08 December 2010 06:00 |
Think, big wooden cart with multiple wheels and more than one oxen pulling it
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Roy Keen
Minden,NV
76 X Glenbrook
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