Go Back   MustangForums.com > Ford Mustang Tech > Classic Mustangs (Tech)
Sign in using an external account
Register Forgot Password?
Search


Classic Mustangs (Tech) Technical discussions about the Mustangs of yester-year.

Welcome to Mustang Forums!
Welcome to Mustang Forums.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!


What advance for 351W ignition ?

Reply
 
 
 
 
Thread Tools Search this Thread
Old 05-13-2007, 02:31 PM   #1
rouge67
1st Gear Member
 
rouge67's Avatar
 
Join Date: Oct 2005
Vehicle: Mustang HT 1967
Location: France
Posts: 54
Default What advance for 351W ignition ?

What is the right advance on my 351W with stock camshaft and Pertronix ignition ? My Haynes manual says 6° for '69 and 10° for '70.[sm=chattypair.gif]
This ad is not displayed to registered or logged-in members.
Register your free account today and become a member on Mustang Forums!
__________________
'67 Red HT
rouge67 is offline   Reply With Quote
Old 05-13-2007, 03:41 PM   #2
66GTKFB
5th Gear Member
 
Join Date: Mar 2007
Location:
Posts: 2,623
Default RE: What advance for 351W ignition ?

Stay with the 6 degrees.
Jim
66GTKFB is offline   Reply With Quote
Old 05-14-2007, 06:04 PM   #3
rouge67
1st Gear Member
 
rouge67's Avatar
 
Join Date: Oct 2005
Vehicle: Mustang HT 1967
Location: France
Posts: 54
Default RE: What advance for 351W ignition ?

Some explanations ?[sm=thanx.gif]
__________________
'67 Red HT
rouge67 is offline   Reply With Quote
Old 05-14-2007, 06:24 PM   #4
Soaring
I ♥ Acer
 
Join Date: Oct 2004
Location:
Posts: 17,565
Default RE: What advance for 351W ignition ?

I tweak mine with my ear. It will be set at slightly different degrees depending on the elevation you are at and the octane of the gas you are using. Set it at about 8 and see if the engine knocks under load, if not then you are probably good to go. If it does, then move it back to 6.
Soaring is offline   Reply With Quote
Old 05-15-2007, 05:01 PM   #5
rouge67
1st Gear Member
 
rouge67's Avatar
 
Join Date: Oct 2005
Vehicle: Mustang HT 1967
Location: France
Posts: 54
Default RE: What advance for 351W ignition ?

Thank you Soaring, between 6° and 10° the engine runs good, with better RPM near 10°. What is good ?
__________________
'67 Red HT
rouge67 is offline   Reply With Quote
Old 05-15-2007, 05:37 PM   #6
Soaring
I ♥ Acer
 
Join Date: Oct 2004
Location:
Posts: 17,565
Default RE: What advance for 351W ignition ?

Quote:
ORIGINAL: rouge67

Thank you Soaring, between 6° and 10° the engine runs good, with better RPM near 10°. What is good ?
I'm running at about 10 and my 289 runs like a scared jack rabbit. Try it there for awhile and see if the engine heats up or not.
Soaring is offline   Reply With Quote
Old 05-15-2007, 06:07 PM   #7
my77stang
6th Gear Member
 
my77stang's Avatar
 
Join Date: Dec 2006
Vehicle: 77 II, 06 GT
Location: Citrus County, FL
Posts: 8,007
Send a message via AIM to my77stang Send a message via MSN to my77stang Send a message via Yahoo to my77stang
Default RE: What advance for 351W ignition ?

if you can get away with 10 thats best - just listen for pinging under a load
__________________
‎Some of my finest hours have been spent on my back veranda, smoking hemp and observing as far as my eye can see. - Thomas Jefferson
my77stang is offline   Reply With Quote
Old 05-15-2007, 09:25 PM   #8
Decurion
2nd Gear Member
 
Join Date: Apr 2006
Vehicle: 65 Mercury Comet
Location: The unemployment epicenter, Detroit, MI
Posts: 432
Send a message via AIM to Decurion
Default RE: What advance for 351W ignition ?

Quote:
ORIGINAL: my77stang

if you can get away with 10 thats best - just listen for pinging under a load
exactly.
__________________
-Eric
65 Comet wagon
Decurion is offline   Reply With Quote
Old 05-16-2007, 12:34 AM   #9
NorCalTroy
3rd Gear Member
 
Join Date: Sep 2006
Location: Sacramento, CA
Posts: 542
Default RE: What advance for 351W ignition ?

I set my 1969 351w at 10 degrees BTDC and have had no problems. I do run 91 octane fuel all the time though, that makes all the difference in the world.
__________________
NorCalTroy is offline   Reply With Quote
Old 05-18-2007, 06:24 PM   #10
rouge67
1st Gear Member
 
rouge67's Avatar
 
Join Date: Oct 2005
Vehicle: Mustang HT 1967
Location: France
Posts: 54
Default RE: What advance for 351W ignition ?

Ok, but here in Europe the octane number is 95. Then ?
__________________
'67 Red HT
rouge67 is offline   Reply With Quote
Old 05-18-2007, 06:28 PM   #11
Soaring
I ♥ Acer
 
Join Date: Oct 2004
Location:
Posts: 17,565
Default RE: What advance for 351W ignition ?

I'm running 87 octane and no pinging. Mine just seems to run best at 10 BTDC. That's why I suggest tweaking by ear. Mine runs sluggish at 6.
Soaring is offline   Reply With Quote
Old 05-18-2007, 08:57 PM   #12
gothand
5th Gear Member
 
gothand's Avatar
 
Join Date: Nov 2006
Vehicle: 1965 2+2 & 2011 GT
Location: North Fulton, GA
Posts: 2,287
Default RE: What advance for 351W ignition ?

Your ignition will also have an effect on your timing. With the MSD ignition box, dizzy and coil, the dyno showed that my car liked 12* BTDC best on '91 octane at a few hundred feet above sea level.
__________________
'65 2+2 EFI and 2011 GT
gothand is offline   Reply With Quote
Old 05-18-2007, 09:01 PM   #13
Hornblower
I ♥ Acer
 
Join Date: Dec 2002
Location: USA
Posts: 148
Default RE: What advance for 351W ignition ?

I'm set at about 8 or 9 BTDC. Like some others, 6 just seems too low for my engine to operate at it's peak. Like Soaring, I first set the timing with the light, then turn the distributor slightly one way or the other to hear the engine ease up and seem to breathe better. That's where I lock her down and check it with the light again.
Hornblower is offline   Reply With Quote
Old 05-21-2007, 05:56 PM   #14
rouge67
1st Gear Member
 
rouge67's Avatar
 
Join Date: Oct 2005
Vehicle: Mustang HT 1967
Location: France
Posts: 54
Default RE: What advance for 351W ignition ?

Quote:
ORIGINAL: gothand

Your ignition will also have an effect on your timing. With the MSD ignition box, dizzy and coil, the dyno showed that my car liked 12* BTDC best on '91 octane at a few hundred feet above sea level.
Thanks everybody, Gothand, and with '95 octane ,what timing?
Does anybody own the graphic curve with advance from 1500 to 5000 R.P.M. ?
__________________
'67 Red HT
rouge67 is offline   Reply With Quote
Old 05-21-2007, 06:50 PM   #15
gothand
5th Gear Member
 
gothand's Avatar
 
Join Date: Nov 2006
Vehicle: 1965 2+2 & 2011 GT
Location: North Fulton, GA
Posts: 2,287
Default RE: What advance for 351W ignition ?

Quote:
ORIGINAL: rouge67
Thanks everybody, Gothand, and with '95 octane ,what timing?
Does anybody own the graphic curve with advance from 1500 to 5000 R.P.M. ?
Wow, that is some pretty high octane stuff you're running. For the timing curve, I imagine you'd have to look to the manufacturer of your dizzy. MSDs, for instance, come with heavy silver, light blue and light silver springs as well as curves showing the effect of each combination on timing.

So, what kind of distributor do you have?
__________________
'65 2+2 EFI and 2011 GT
gothand is offline   Reply With Quote
Old 05-21-2007, 08:10 PM   #16
66 Hardtop 5.0
2nd Gear Member
 
Join Date: Aug 2005
Location: Oslo, Norway
Posts: 153
Default RE: What advance for 351W ignition ?

Quote:
ORIGINAL: gothand

Quote:
ORIGINAL: rouge67
Thanks everybody, Gothand, and with '95 octane ,what timing?
Does anybody own the graphic curve with advance from 1500 to 5000 R.P.M. ?
Wow, that is some pretty high octane stuff you're running. For the timing curve, I imagine you'd have to look to the manufacturer of your dizzy. MSDs, for instance, come with heavy silver, light blue and light silver springs as well as curves showing the effect of each combination on timing.

So, what kind of distributor do you have?
The octane numbers in Europe and The USA are NOT the same. European 95 oct. is equivalent to US 90-91, in other words "regular gas".
__________________
66 HT, Ford Racing 5.0L, Edl Air Gap, Holley650cfm, Mallory+MSD ignition, Hedman+Hooker exhaust, Toploader close ratio w/Hurst shifter, KYB shocks, 1-piece export brace, monte carlo bar, 1"sway-bar, SSBC discbrakes, Currie-built rear 3.55:1 trac.lock
66 Hardtop 5.0 is offline   Reply With Quote
Old 05-21-2007, 08:49 PM   #17
Soaring
I ♥ Acer
 
Join Date: Oct 2004
Location:
Posts: 17,565
Default RE: What advance for 351W ignition ?

We call regular gas 87 octane, mid range is 89 and premium is 91-93. I find it difficult to locate 93 octane for my Mach, so it gets to use 91. The computer adjusts though, so I'm not hurting anything.
Soaring is offline   Reply With Quote
Old 05-22-2007, 10:10 AM   #18
rouge67
1st Gear Member
 
rouge67's Avatar
 
Join Date: Oct 2005
Vehicle: Mustang HT 1967
Location: France
Posts: 54
Default RE: What advance for 351W ignition ?

Quote:
ORIGINAL: gothand
...
So, what kind of distributor do you have?
Original Ford distributor.
Quote:
ORIGINAL: 66 Hardtop 5.0
The octane numbers in Europe and The USA are NOT the same. European 95 oct. is equivalent to US 90-91, in other words "regular gas".
How, this is interessant, are you really sure ?
__________________
'67 Red HT
rouge67 is offline   Reply With Quote
Old 05-22-2007, 12:46 PM   #19
66 Hardtop 5.0
2nd Gear Member
 
Join Date: Aug 2005
Location: Oslo, Norway
Posts: 153
Default RE: What advance for 351W ignition ?

100%

And after a quick Google search:
http://en.wikipedia.org/wiki/Octane_number
__________________
66 HT, Ford Racing 5.0L, Edl Air Gap, Holley650cfm, Mallory+MSD ignition, Hedman+Hooker exhaust, Toploader close ratio w/Hurst shifter, KYB shocks, 1-piece export brace, monte carlo bar, 1"sway-bar, SSBC discbrakes, Currie-built rear 3.55:1 trac.lock
66 Hardtop 5.0 is offline   Reply With Quote
Old 05-22-2007, 05:38 PM   #20
rouge67
1st Gear Member
 
rouge67's Avatar
 
Join Date: Oct 2005
Vehicle: Mustang HT 1967
Location: France
Posts: 54
Default RE: What advance for 351W ignition ?

Thanks 66 HT 5, very good link !Click the image to open in full size.
__________________
'67 Red HT
rouge67 is offline   Reply With Quote
Old 05-22-2007, 05:38 PM
MustangForums
Ford Mustang




Paid Advertisement

 
 
 
Reply

Tags
1995, 1996, 351, 351w, advance, advanced, box, cam, curve, efi, f250, ford, ignition, ingition, overheting, stock, timing

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
MSD Ignition questions Adrenolin Classic Mustangs (Tech) 34 12-03-2008 05:41 PM
thinking about a 351w? what do you think? kweb288 351 Mustang 24 04-30-2008 05:52 AM

Advertising

Featured Sponsors
Vendor Directory
New Sponsors
All times are GMT -5. The time now is 01:10 AM.

Internet Brands, Inc.


This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford is a registered trademark of the Ford Motor Company
Emails Backup