GMCforum: GMCnet » Timing adjustment

Home » Public Forums » GMCnet » Timing adjustment

Show: Today's Messages :: Polls :: Message Navigator

Timing adjustment [message #156587]

Fri, 13 January 2012 16:51

davidlive

Messages: 143
Registered: November 2011
Location: Simi valley, Southern Cal...

Karma: -1

Senior Member

i have a 1974 gmc motorhome, the distributor vacuum line was disconnected from the previous owner who removed all the smog hoses etc. I did some research and found the vacuum hose was to be linked to the intake vacuum and hooked that up.

what should the timing be set at ?

78 Royal #749
74 #136
Oversteer is when you hit the wall with the rear of the car, understeer is when you hit the wall with the front of the car. Hp is how fast you hit the wall, and torque is how far you take the wall with you when you hit it.

Report message to a moderator

Re: [GMCnet] Timing adjustment [message #156589 is a reply to message #156587]

Fri, 13 January 2012 16:56

emerystora

Messages: 4442
Registered: January 2004

Karma: 13

Senior Member

Generally about 8 deg before top dead center. This can vary a little with your elevation and other factors.
When you set it be sure to unplug the vacuum line from the distributor and plug the line.
Don't forget to reattach it after setting the timing.

On Jan 13, 2012, at 3:51 PM, David Morrison wrote:

>
> i have a 1974 gmc motorhome, the distributor vacuum line was disconnected from the previous owner who removed all the smog hoses etc. I did some research and found the vacuum hose was to be linked to the intake vacuum and hooked that up.
>
> what should the timing be set at ?
>

Emery Stora
77 Kingsley
Santa Fe, NM

_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

Report message to a moderator

Re: [GMCnet] Timing adjustment [message #156950 is a reply to message #156589]

Mon, 16 January 2012 14:11

Greg and April

Messages: 263
Registered: December 2011

Karma: 0

Senior Member

What would the timing be set at higher elevations ( ~7000' )?
.

Greg H.

I don't just march to the beat of my own drum - I have an entire brass band
to keep me company.

.
----- Original Message -----
From: "Emery Stora" <emerystora@mac.com>
To: <gmclist@temp.gmcnet.org>
Sent: Friday, January 13, 2012 15:56
Subject: Re: [GMCnet] Timing adjustment

> Generally about 8 deg before top dead center. This can vary a little with
> your elevation and other factors.
> When you set it be sure to unplug the vacuum line from the distributor and
> plug the line.
> Don't forget to reattach it after setting the timing.
>

_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

Report message to a moderator

Re: [GMCnet] Timing adjustment [message #156962 is a reply to message #156950]

Mon, 16 January 2012 16:00

Bruce Hart

Messages: 1501
Registered: October 2011
Location: La Grange, Wyoming

Karma: 5

Senior Member

I've also heard that you would advance the timing by 1 degree per thousand
feet in elevation.

On Mon, Jan 16, 2012 at 1:11 PM, Greg and April
<gregandapril@earthlink.net>wrote:

> What would the timing be set at higher elevations ( ~7000' )?
> .
>
> Greg H.
>
> I don't just march to the beat of my own drum - I have an entire brass band
> to keep me company.
>
> .
> ----- Original Message -----
> From: "Emery Stora" <emerystora@mac.com>
> To: <gmclist@temp.gmcnet.org>
> Sent: Friday, January 13, 2012 15:56
> Subject: Re: [GMCnet] Timing adjustment
>
>
> > Generally about 8 deg before top dead center. This can vary a little
> with
> > your elevation and other factors.
> > When you set it be sure to unplug the vacuum line from the distributor
> and
> > plug the line.
> > Don't forget to reattach it after setting the timing.
> >
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>

--
Bruce Hart
GMC Wannabe
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

Bruce Hart 1976 Palm Beach 1977 28' Kingsley La Grange, Wyoming

Report message to a moderator

Previous Topic:	Muliple Alterators (5)
Next Topic:	[GMCnet] Bogies

Goto Forum:

-=] Back to Top [=-

Current Time: Sat Oct 12 22:28:27 CDT 2024

Total time taken to generate the page: 0.00979 seconds