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Author Topic:   Better e.t.s today but had carb problems (long)
bluestreek
Gearhead

Posts: 1086
From: Athens,GA
Registered: Jul 2001

posted 03-23-2003 12:27 AM     Click Here to See the Profile for bluestreek   Click Here to Email bluestreek     Edit/Delete Message   Reply w/Quote
Before driving to the track I decided to fix a few things and also recurve my ign. timing a little since I started noticing a little spark-knock. I revved the engine up to about 4000 and held it a few seconds when I noticed that the carb began to load up. I put a new float valve in and it seemed to help.
I made it to the track OK but 3 hours late and missed both time trials and the first Sportsman elimination. The only thing I could do was run Trophy Street bracket class and dial in 13.00 flat.
My first race, I ran against a '70 Dodge 340 Challenger with a 13.10 dial and I climbed his tail so fast that I made him break out. Then my 2nd run was against a 69 'Vette that was also dialed in at 13.00. My carb flooded again after my burnout, so I decided to make this my last run and show the 'Vette what my little 13 second Mustang could really do. I dropped my clutch at about 3000 rpms and felt the car push me back in my seat like it has never done before!! I passed him at mid-track in 3rd gear and wound up running the cars best ever e.t.

60' ... 1.81
1/8 ... 7.80 @ 91 mph
1/4 ... 12.11 @ 114 mph

Now if I could just figure out the carb problem. It's loading up above 4000 rpms when it gets free revved or during burnouts. I wonder if I need a pressure regulator for the Carter strip pump??

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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, TFS alum. heads, ported Stealth 8020 intake, Xtreme 274 Solid Roller, Holley 750 HP, long tubes, 4speed, 9" 3.50 posi.
1st pass: 12.50 @ 112 mph
DanH

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steve'66
Gearhead

Posts: 5659
From: Sonoma,CA,USA
Registered: Mar 2000

posted 03-23-2003 12:45 AM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
Dan,

That's mid 11 second mph, just gotta get your 60'rs down.

What's a carter strip pump? Mechanical? If its mechanical that might explain it and a regulator might help.

SteveW

[This message has been edited by steve'66 (edited 03-23-2003).]

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steve'66
Gearhead

Posts: 5659
From: Sonoma,CA,USA
Registered: Mar 2000

posted 03-23-2003 12:47 AM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
oops

[This message has been edited by steve'66 (edited 03-23-2003).]

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bluestreek
Gearhead

Posts: 1086
From: Athens,GA
Registered: Jul 2001

posted 03-23-2003 12:54 AM     Click Here to See the Profile for bluestreek   Click Here to Email bluestreek     Edit/Delete Message   Reply w/Quote
Yes. It's a mechanical pmp that's supposed to be rated at 120GPH at 7.5 psi.

------------------
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, TFS alum. heads, ported Stealth 8020 intake, Xtreme 274 Solid Roller, Holley 750 HP, long tubes, 4speed, 9" 3.50 posi.
1st pass: 12.50 @ 112 mph
DanH

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steve'66
Gearhead

Posts: 5659
From: Sonoma,CA,USA
Registered: Mar 2000

posted 03-23-2003 01:34 AM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
Dan,

It could be blowing fuel past the float's valve(s). Try a regulator set at 5-6psi, it should cure it.

Good luck,

Nice run btw

SteveW

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V8 Thumper
Gearhead

Posts: 2991
From: Orange, Ca. United States of America
Registered: Dec 2001

posted 03-23-2003 09:26 AM     Click Here to See the Profile for V8 Thumper   Click Here to Email V8 Thumper     Edit/Delete Message   Reply w/Quote
Cool!

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

[This message has been edited by V8 Thumper (edited 03-23-2003).]

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Hans olsson
Gearhead

Posts: 249
From: Sweden
Registered: Apr 2000

posted 03-23-2003 10:04 AM     Click Here to See the Profile for Hans olsson   Click Here to Email Hans olsson     Edit/Delete Message   Reply w/Quote
Good run Dan .Maybe you have some loose dirt or rubber from the hoses that keep the inlet valve from closing,it could happen at any time. Mid 11 for sure with good 60 ft time,1.6-1.65 maybe?

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

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

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Fastymz
Moderator

Posts: 9095
From: Reno Nv USA MEM#1240
Registered: Apr 2001

posted 03-23-2003 01:40 PM     Click Here to See the Profile for Fastymz   Click Here to Email Fastymz     Edit/Delete Message   Reply w/Quote
Dan those times are great.

1/4 ... 12.11 @ 114 mph
Thats a kick a** street car.

------------------
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: 1086
From: Athens,GA
Registered: Jul 2001

posted 03-23-2003 02:23 PM     Click Here to See the Profile for bluestreek   Click Here to Email bluestreek     Edit/Delete Message   Reply w/Quote
Thanks guys!
What is surprising to me and everyone at the track is the fact that I'm still using a mechanical fuel pump, stock fuel line, stock distributor, vacuum secondary carb, no MSD, fairly quiet 2 1/4 " exhaust, 3.50 street gears, and simple traction bars. This could mean that there is a lot of improvement left on the car.

Steve'66, I have a cheap edelbrock pressure regulator that I bought a few years ago for the time I tried a edelbrock carb. I quit using it on the Holleys cause I felt it was restricting the flow volume. Who makes a decent priced high volume regulator?


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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, TFS alum. heads, ported Stealth 8020 intake, Xtreme 274 Solid Roller, Holley 750 HP, long tubes, 4speed, 9" 3.50 posi.
1st pass: 12.50 @ 112 mph
DanH

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V8 Thumper
Gearhead

Posts: 2991
From: Orange, Ca. United States of America
Registered: Dec 2001

posted 03-23-2003 02:45 PM     Click Here to See the Profile for V8 Thumper   Click Here to Email V8 Thumper     Edit/Delete Message   Reply w/Quote
Hey Dan, check this out:

http://store.summitracing.com/partdetail.asp?part=23230

It's an Aeromotive regulator, in a Summit box and not anodized (and almost half the price! ). It's what I run

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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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bluestreek
Gearhead

Posts: 1086
From: Athens,GA
Registered: Jul 2001

posted 03-23-2003 07:39 PM     Click Here to See the Profile for bluestreek   Click Here to Email bluestreek     Edit/Delete Message   Reply w/Quote
Thanks for the heads up yo!
Looks like a good deal.

------------------
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, TFS alum. heads, ported Stealth 8020 intake, Xtreme 274 Solid Roller, Holley 750 HP, long tubes, 4speed, 9" 3.50 posi.
1st pass: 12.50 @ 112 mph
DanH

[This message has been edited by bluestreek (edited 03-23-2003).]

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