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| Re: HEI adjuster [message #156477 is a reply to message #156475] |
Thu, 12 January 2012 14:26   |
Bob de Kruyff
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
Karma: 1
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Senior Member |
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I'm not so sure our vacuum advance unit is special other than a certain calibration setting that I'm sure can be found on other GM distributors as well. This unit wouldn't offer dynamic advance changes which I would hate to lose. There are adjustable vacuum units that may be more interesting.
Bob de Kruyff
78 Eleganza
Chandler, AZ
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| Re: HEI adjuster [message #156503 is a reply to message #156475] |
Thu, 12 January 2012 17:05 |
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John Heslinga
Messages: 632
Registered: February 2011
Location: Edmonton, Alberta, Canada
Karma: 4
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Senior Member |
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Hi Bob:
You really do want the Vacuum advance in your unit. Without a computer, it is the item that adjusts your timing based on engine load. The item you are looking at on e-Bay, gets rid of the vacuum advance and locks the timing to just the centrifical advance. (If they even have that working) The only thing it does is allow you to adjust the base timing without loosening the distributor bolt.
Remember that Race cars do not need load sensing devices. They either do "Go like Mad Man" or "Stop" Being at Wide Open Throttle (and hopefully zero Vacuum )They are always under the maximum load possible and Vaccum advance does nothing for them.
Note: If there is Vacuum in a Race car, that means there is some type of restriction in the intake system..Bad thing for racers.
We must be very careful when looking at Race stuff. They do things for very different reasons we do..
John and Cathie Heslinga
1974 Canyonlands 260
455, Manny tranny and 1 ton, 3:70 LS,
Red Seal Journeyman, DTE, BEd. MEd.
Edmonton, Alberta
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| Re: HEI adjuster [message #156524 is a reply to message #156503] |
Thu, 12 January 2012 19:50 |
Bob de Kruyff
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
Karma: 1
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Senior Member |
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| John Heslinga wrote on Thu, 12 January 2012 16:05 |
Hi Bob:
You really do want the Vacuum advance in your unit. Without a computer, it is the item that adjusts your timing based on engine load. The item you are looking at on e-Bay, gets rid of the vacuum advance and locks the timing to just the centrifical advance. (If they even have that working) The only thing it does is allow you to adjust the base timing without loosening the distributor bolt.
Remember that Race cars do not need load sensing devices. They either do "Go like Mad Man" or "Stop" Being at Wide Open Throttle (and hopefully zero Vacuum )They are always under the maximum load possible and Vaccum advance does nothing for them.
Note: If there is Vacuum in a Race car, that means there is some type of restriction in the intake system..Bad thing for racers.
We must be very careful when looking at Race stuff. They do things for very different reasons we do..
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Hi John--these threads run together so I'm not the one who is interested in this at all!!
Bob de Kruyff
78 Eleganza
Chandler, AZ
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| Re: HEI adjuster [message #156533 is a reply to message #156475] |
Thu, 12 January 2012 20:57 |
PettyVTX
Messages: 363
Registered: April 2011
Location: Winder Ga.
Karma: 1
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Senior Member |
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Ok im SOLD Emery's method is the best ive seen. Im going to make me a pointer. I was just curious Im all for the vacuum advance. When you step on it it goes. I was just wondering if you could use this with the vac advance and maybe the pointer too. Just would eliminate using a wrench.
Ted
Ex Avion now looking for a 23'
Jeep Wrangler Towd
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| Re: [GMCnet] HEI adjuster [message #156535 is a reply to message #156533] |
Thu, 12 January 2012 21:26 |
emerystora
Messages: 4442
Registered: January 2004
Karma: 13
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Senior Member |
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I used this pointer a lot prior to getting my computer controlled distributor.
I set the bolt holding the distributor snug but just loose enough so that I could reach down and twist the distributor by hand.
I never had a problem with it turning by itself.
Emery
On Jan 12, 2012, at 7:57 PM, Ted Petty wrote:
>
>
> Ok im SOLD Emery's method is the best ive seen. Im going to make me a pointer. I was just curious Im all for the vacuum advance. When you step on it it goes. I was just wondering if you could use this with the vac advance and maybe the pointer too. Just would eliminate using a wrench.
> Ted
> --
> 75 Avion-----
>
> 75 cosworth Vega Toad
>
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