Author Topic: Did Bubba tune this car ?  (Read 3506 times)

0 Members and 1 Guest are viewing this topic.

Offline anychevy

  • Four Barrel
  • ***
  • Posts: 201
  • Location: Sydney
Did Bubba tune this car ?
« on: April 01, 2012, 05:40:02 PM »
66 327 300 with mild cam and original Holley

Initial timing set @ ~ 8○ BTDC with total mech. @ ~ 28○
Idle mixture 3 turns out on both sides (oh my eyes) Dwell  35○ :banner:

Reset inital to ~ 16○ which now has the total  @ ~ 36○ WO vacuum
Dwell now set @ 30○ idle mixture 1-1/2 turn out each.
Runs alot better. :rolleyes:

Offline gtc

  • Supercharged
  • ******
  • Posts: 1464
  • Car: 1970 454 Manual
Did Bubba tune this car ?
« Reply #1 on: April 01, 2012, 05:53:18 PM »
Bubba certainly gets around, so he's probably used his monkey wrench, chisel and lump hammer to fine tune your engine at some stage.
It's C3 chromie for me, see? Si!

Offline anychevy

  • Four Barrel
  • ***
  • Posts: 201
  • Location: Sydney
Did Bubba tune this car ?
« Reply #2 on: April 02, 2012, 07:31:33 AM »
Quote from: gtc link=topic=9117.msg1045942360#msg1045942360
Bubba certainly gets around, so he's probably used his monkey wrench, chisel and lump hammer to fine tune your engine at some stage.

The retarded timing may have been poor California fuel (or he just went by the book) but there's no excuse for such a rich idle :rolleyes:
Tuned by ear maybe ?

Offline gtc

  • Supercharged
  • ******
  • Posts: 1464
  • Car: 1970 454 Manual
Did Bubba tune this car ?
« Reply #3 on: April 02, 2012, 01:07:39 PM »
Quote from: anychevy link=topic=9117.msg1045942367#msg1045942367

Tuned by ear maybe ?


Yep, tin ear.
It's C3 chromie for me, see? Si!

Offline bfit

  • Don't talk of dust and roses
  • Global Moderator
  • Supercharged
  • *****
  • Posts: 2878
  • Two one thousands
  • Location: NSW
  • Mood: Honey reinforced
  • Car: Yes
Did Bubba tune this car ?
« Reply #4 on: April 02, 2012, 03:05:16 PM »
Quote from: anychevy link=topic=9117.msg1045942359#msg1045942359
66 327 300 with mild cam and original Holley

Initial timing set @ ~ 8○ BTDC with total mech. @ ~ 28○
Idle mixture 3 turns out on both sides (oh my eyes) Dwell  35○ :banner:

Reset inital to ~ 16○ total mech. now @ ~ 36○ Dwell @ 30○ mixture 1-1/2 turn out each.
Runs alot better. :rolleyes:


16Deg total  advance seem a little light to me
is that mechanical only and not including vacuum
and dwell angle I would think 31/34 degs
at 36 deg you  compromise the coil saturation time
and you introduce other problems

 
personally I would  think about fitting a MSD    distributor
with an 6AL controller
you will have far less problems and better advance  control
and if you wire it up correctly you can have a built in anti theft devise.

But nothing will defeat  a tilt  tray.
Bfit
I have seen too many instances where people continue to pursue wrong courses of action because they do not take the time to think critically about what has happened in the past.’’
Winston Churchill

Offline anychevy

  • Four Barrel
  • ***
  • Posts: 201
  • Location: Sydney
Did Bubba tune this car ?
« Reply #5 on: April 02, 2012, 06:11:11 PM »
Quote from: Bfit link=topic=9117.msg1045942370#msg1045942370

16Deg total  advance seem a little light to me
is that mechanical only and not including vacuum
and dwell angle I would think 31/34 degs
at 36 deg you  compromise the coil saturation time
and you introduce other problems
personally I would  think about fitting a MSD distributor
with an 6AL controller

16 initial WO vacuum and 36 total WO vacuum (sorry for the confusion)
But this is just a guess, as I don't have a dial back light and I'm just going off the the timing tab.
At the moment the inital is at the very end of the scale on the tab and total is about 20○ after that.
I've got to put some timing tape on the ballancer to get it right.

Later, I'll probably install a Pertronix ignitor III instead of the points and keep it looking stock.

At the moment, I'm just getting to idle and run o.k.
I have no idea what cam is in it, so I'll probably have to recurve the dizzy by trial and error as well.