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Author Topic:   Leak down test results
V8 Thumper
Gearhead

Posts: 4377
From: Arizona
Registered: Dec 2001

posted 03-09-2003 01:45 PM     Click Here to See the Profile for V8 Thumper   Click Here to Email V8 Thumper     Edit/Delete Message   Reply w/Quote
Engine at running temp

#1 & 5: 3%
#2, 3, 4, 7: 2%
#6 & 8: 1%

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1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9"

All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html

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Hans olsson
Gearhead

Posts: 622
From: Sweden
Registered: Apr 2000

posted 03-09-2003 02:00 PM     Click Here to See the Profile for Hans olsson   Click Here to Email Hans olsson     Edit/Delete Message   Reply w/Quote
Wow,what kind of ring setup do you have?
Hans

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  • 71 Mach1 351c
  • E/SA 11.89-110 mph
  • F/SA 11.76-111 mph

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V8 Thumper
Gearhead

Posts: 4377
From: Arizona
Registered: Dec 2001

posted 03-09-2003 02:04 PM     Click Here to See the Profile for V8 Thumper   Click Here to Email V8 Thumper     Edit/Delete Message   Reply w/Quote
Yea, I was pleasantly suprised as well

Childs & Albert Dura-Moly 1/16" top & second, file fit by me; .018-.019 top, .016-.017 second

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1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9"

All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html

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V8 Thumper
Gearhead

Posts: 4377
From: Arizona
Registered: Dec 2001

posted 03-09-2003 02:07 PM     Click Here to See the Profile for V8 Thumper   Click Here to Email V8 Thumper     Edit/Delete Message   Reply w/Quote
1400 road miles, with probably two dozen 7000 rpm blasts

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1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9"

All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html

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Hans olsson
Gearhead

Posts: 622
From: Sweden
Registered: Apr 2000

posted 03-09-2003 02:15 PM     Click Here to See the Profile for Hans olsson   Click Here to Email Hans olsson     Edit/Delete Message   Reply w/Quote
Very good results.

Hans

------------------

  • 71 Mach1 351c
  • E/SA 11.89-110 mph
  • F/SA 11.76-111 mph

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Fastymz
Moderator

Posts: 18703
From: Reno Nv USA MEM#1240
Registered: Apr 2001

posted 03-09-2003 02:23 PM     Click Here to See the Profile for Fastymz   Click Here to Email Fastymz     Edit/Delete Message   Reply w/Quote
SHOW OFF

------------------
SCOOP
oddly obsessed with big scoops on little Mustangs

2.26 60'S
14.9 @ 90.86MPH

65 coupe,351w,C4,Big Boss 429 hood scoop,8"3.40 TracLoc,Cragar SS,Black Suede.

https://mustangsandmore.com/ubb/Fastymz.html

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bluestreek
Gearhead

Posts: 1724
From: Athens,GA
Registered: Jul 2001

posted 03-09-2003 03:22 PM     Click Here to See the Profile for bluestreek   Click Here to Email bluestreek     Edit/Delete Message   Reply w/Quote
What was your average psi on the test? Just curios since we have similar combos.

thanks,
Dan

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1966 Mustang Coupe: Custom glass hood and BIG scoop sits atop a 289 stroked to 331 c.i., Steel crank and girdle, 5.4 H-beams, Forged slugs, ported TFS alum. heads, ported Stealth 8020 intake, CompCams Xtreme Solid Roller, Holley 750 HP, long tubes, 4speed, 9" 3.50 posi, BFG Drag radials..

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V8 Thumper
Gearhead

Posts: 4377
From: Arizona
Registered: Dec 2001

posted 03-09-2003 10:51 PM     Click Here to See the Profile for V8 Thumper   Click Here to Email V8 Thumper     Edit/Delete Message   Reply w/Quote
100 psi cylinder fill, they'd hold 97 psi or better . 175-180 cranking pressure on all 8 cylinders

[This message has been edited by V8 Thumper (edited 03-09-2003).]

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rockafellz
Gearhead

Posts: 1426
From: San Lorenzo, CA, USA
Registered: Aug 2001

posted 03-10-2003 12:51 PM     Click Here to See the Profile for rockafellz   Click Here to Email rockafellz     Edit/Delete Message   Reply w/Quote
dude!! You definitely built that sucker with some precision!! And it shows 1400 miles later.

How do I build myself one of those leak-down testers? Got a pic?

Erik

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1966 Ford Mustang 2+2
Mine - Restomod in Progress

1966 Ford Mustang Coupe
Dad's - Original Unrestored

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Tea'sGrabber
Gearhead

Posts: 276
From: Seattle, Wash.
Registered: Feb 2003

posted 03-10-2003 12:56 PM     Click Here to See the Profile for Tea'sGrabber   Click Here to Email Tea'sGrabber     Edit/Delete Message   Reply w/Quote
Why did you leak it down in the first place?

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Todd 71 Mav Grabber All orig 306 cu.in. Cast Iron heads. Carillo Rods.Best et. 10.71 @ 124 thru the mufflers.

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V8 Thumper
Gearhead

Posts: 4377
From: Arizona
Registered: Dec 2001

posted 03-10-2003 09:59 PM     Click Here to See the Profile for V8 Thumper   Click Here to Email V8 Thumper     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by Tea'sGrabber:
Why did you leak it down in the first place?



Just doing a full-blown diagnosis... got some good miles on it now, time to re-torque everything and go over it with a fine tooth comb

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1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9"

All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html

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V8 Thumper
Gearhead

Posts: 4377
From: Arizona
Registered: Dec 2001

posted 03-10-2003 10:20 PM     Click Here to See the Profile for V8 Thumper   Click Here to Email V8 Thumper     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by rockafellz:

How do I build myself one of those leak-down testers? Got a pic?



I'll shoot a pic and email it to you

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1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9"

All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html

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rcodenewf
Journeyman

Posts: 17
From: Manitoba, Canada
Registered: Jan 2002

posted 03-10-2003 10:35 PM     Click Here to See the Profile for rcodenewf   Click Here to Email rcodenewf     Edit/Delete Message   Reply w/Quote
I could use a pic of that leak down tester as well. thanks . John

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