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

Edelbrock rod & jet combination questions

Thread Tools
 
Search this Thread
 
Old Aug 7, 2009 | 03:30 AM
  #11  
kalli's Avatar
kalli
6th Gear Member
 
Joined: Oct 2006
Posts: 6,417
From: Cork, Ireland
Default

have to agree with what Tad says up there.
timing gun is essential. vacuum gauge a nice to have, but I rely on it so I couldn't do without anymore. A/F meter is insanly expensive and probably only tuners and crazy people have one (and me as i don't believe a word anyone including me is saying without measuring). anyway, i was lucky to pick up LM-1 with exhaust clamp and shipping for 400$.

Don't get us wrong here. you obviously can go ahead and just change to weaker springs and see what happens. If that helps you can always change the combination and see what happens. it will get better or worse or nothing will happen at all.

The problem is though if you fiddle around with it for weeks and then figure the timing wasn't right you can re-do the whole lot again.
So yes ya, for a quick check for your rich condition, try the springs.

As for the timing gun you might just be lucky and one of your friends has one (i just replaced my 20 year old one). Tad is absolutely right, every mechanic has had one.
As for the manifold. it's a recommendation. a dual plane will work better. But still noone says you can't improve what you have without changing the manifold ;-)
Old Aug 7, 2009 | 11:57 AM
  #12  
Nabster's Avatar
Nabster
Thread Starter
3rd Gear Member
 
Joined: Jul 2006
Posts: 800
From: Wyoming
Default

Alright, got a vacuum gauge. I'm making 12 1/2 - 13" at idle in park, 9 1/2 - 10" at idle in drive. And I have no idea what those tell me.
Old Aug 7, 2009 | 05:39 PM
  #13  
Starfury's Avatar
Starfury
6th Gear Member
 
Joined: Aug 2007
Posts: 5,896
From: Elk Grove, CA
Default

that you've got low vacuum, for one reason or another. Most likely a combo of running too rich and too little ignition advance.

Last edited by Starfury; Aug 7, 2009 at 05:41 PM.
Old Aug 7, 2009 | 06:47 PM
  #14  
Nabster's Avatar
Nabster
Thread Starter
3rd Gear Member
 
Joined: Jul 2006
Posts: 800
From: Wyoming
Default

That is with the idle running really low, don't know if that matters at all. If I can get up early tomorrow I'll try the rods and jets, see if I can get it running properly and test vacuum again.

And how big an issue is improper ignition advance and timing? As I said, there are no knocks or pings or any problems, even running up past 100 mph (in proper circumstances with proper safety measures taken, blah blah). The car runs through a gamut of speeds and conditions from 30-40 degree temps up to 90+ degrees, all sorts of speeds and no problems at all aside from the general lack of punch and running rich.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
MustangForums Editor
Mustang News, Concepts, Rumors & Discussion
3
Nov 10, 2015 11:39 AM
TfcCDR
V6 (1994-2004) Mustangs
1
Sep 14, 2015 12:08 PM
tramphardrocker
5.0L (1979-1995) Mustang
6
Sep 13, 2015 08:56 PM
tj@steeda
Steeda Autosports
0
Sep 10, 2015 08:39 PM
Steve@CJPP
CJ Pony Parts
0
Sep 3, 2015 11:43 AM




All times are GMT -5. The time now is 06:27 PM.