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10-19-2003, 01:42 PM
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Administrator
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Join Date: Jan 1999
Location: Duvall,
Wa
Cobra Make, Engine: KMP286, Shelby 482, Webers, 593HP
Posts: 4,162
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Not Ranked
25% more horsepower....FREE!!
I'll preface this with the fact that I am such a dork sometimes.....
Yup, yesterday I picked up a hell of a lot of extra ponies with just a little modification.....Are you curious yet??? It's really cool!!! Try making sure your gas pedal travel is sufficient to open the carb all the way up!
DUH!!!! I thought the car had good ooomph, but I wasn't incredibly impressed.....Started thinking about stuff more and just looking at things....I look to make sure that my adjustment on the pedal linkage is correct, and whouldn't you know it, it was catching on top of a piece of my aluminum work as it travelled. From a pedal feel perspective, it felt like I was bottoming out solidly, so I just didn't notice that the lever was catching on it. Oooopss.... Romped on it a little yesterday, and oooooboooooyyyyyy a whole new toy! Was only 3/4 throdle max before.  |
10-19-2003, 01:45 PM
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Senior Club Cobra Member
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Join Date: Jan 2001
Location: North west suburbs Chicago,
Il.
Cobra Make, Engine: Classic Roadster
Posts: 1,528
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Not Ranked
Brent it is often the little minor
stuff that can make such a huge difference.
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10-19-2003, 03:09 PM
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CC Member
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Join Date: Jun 1999
Location: Bay Area,
FL
Cobra Make, Engine: What Cobra?
Posts: 7,193
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Not Ranked
Wait till you free up the linkage so you can shift to 4th gear.
You'd really be imopressed then. I'd say, and easy 26-29% more HP.
TURK
__________________
OBAMA IN in 2012
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10-19-2003, 04:27 PM
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Senior Club Cobra Member
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Join Date: Mar 2001
Location: Southern Connecticut,
CT
Cobra Make, Engine: SPF - 351W, 944 non-turbo
Posts: 2,105
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Not Ranked
Brent:
After reading your post It occured to me that possibly I'm the only cobra owner in the world who has never had his gas pedal all the way to the floor. Should I seek help?
Bob
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10-19-2003, 04:57 PM
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CC Member
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Join Date: Oct 2002
Location: Eagle,
Ne.
Cobra Make, Engine: 1966 Lone Star 427SC.
Posts: 4,307
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Not Ranked
Hey boys, I'm going to try & use a turkey pan, whose rigid throttle linkage works best with the pan ? (I now have a Lokar cable) I wrote to "Kirkham" for advice & price but as of yet, no responce. Any advice ?
Thanks,
Kevin
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Regards,
Kevin
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10-19-2003, 06:22 PM
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CC Member
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Join Date: Apr 2003
Location: Nantucket Island 30 miles off the coast,
MA
Cobra Make, Engine: Superformance#1325, Miller Machine FE
Posts: 487
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Not Ranked
Credit is do you !
I give you alot of credit for posting your mistake. I too have found the simplest things are usually the problem. I am checking my carbs now!
__________________
Everything has a downside, so dwell on the positives. Find humor in the tough times.
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10-19-2003, 06:38 PM
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(An All-Around Nice Guy)
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Join Date: Aug 2000
Location: Camden,
SC
Cobra Make, Engine: Unique Motorcars (sold)
Posts: 1,582
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Not Ranked
Half-Throttle-Bob,
I can't remember the last time I put my foot all the way to the floor (isn't really necessary). Oftentimes, only 1/2 or 3/4 throttle is enough to achieve my "objective" (whatever that may be  ).
Oh and Brent... you're not the only one. This also happened to Toy Collector.
__________________
Keith 
Former Unique owner.
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10-19-2003, 07:33 PM
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Senior Club Cobra Member
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Join Date: Jun 2001
Location: North Metro Atlanta,
GA
Cobra Make, Engine: 2 dr roadster, V-8, 4 spd.
Posts: 2,780
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Not Ranked
This is a topic near and dear to my heart. Thanks for letting everyone know Keith . My old SPF was an early car and the pivot arm that attaches to the throttle pedal would evenually loosen and slip ever so slowly result in situation above. Easily fixed with a drill and a roll pin, but an interesting one to diagnose. If a car ever feels underpowered, and all else seems normal (noise, temps, no leaks) this is the first thing I check. this post is also timely as I just did the linkage on my KMP yesterday with GeorgiaSnake in attendance. TURK/JAMO, not sure which of your cars it was I took close-ups of at DVSF of your linkage, but it came in handy. |
10-19-2003, 08:36 PM
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Super Moderator
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Join Date: May 2001
Location: Fresno,
CA
Cobra Make, Engine: KMP 184/482ci Shelby
Posts: 14,445
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Not Ranked
TC
I hope it was mine...otherwise you're linkage is lacking one carb (Turk had a two carb setup).
__________________
Jamo
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10-19-2003, 08:40 PM
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Administrator
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Join Date: Jan 1999
Location: Duvall,
Wa
Cobra Make, Engine: KMP286, Shelby 482, Webers, 593HP
Posts: 4,162
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Not Ranked
Wheew, I thought I was the only one to have done this....  |
10-19-2003, 08:48 PM
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Senior Club Cobra Member
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Join Date: Jun 2001
Location: North Metro Atlanta,
GA
Cobra Make, Engine: 2 dr roadster, V-8, 4 spd.
Posts: 2,780
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Not Ranked
Was yours then Jamo. how you have the throttle spring set up is beyond me.
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10-19-2003, 08:51 PM
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CC Member
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Join Date: Jun 1999
Location: Bay Area,
FL
Cobra Make, Engine: What Cobra?
Posts: 7,193
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Not Ranked
TC,
It is beyond HIM also.
TURK
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10-19-2003, 09:12 PM
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Super Moderator
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Join Date: May 2001
Location: Fresno,
CA
Cobra Make, Engine: KMP 184/482ci Shelby
Posts: 14,445
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Not Ranked
TC
That was a VERY temporary setup to get past the normal SCCA "two return spring" rule (evidently relaxed at OSU from what I saw) because I ran the autocross at the Fling. Course, I also had a helmet at the airport until I saw nobody else was wearing theirs.
I now have a proper dual return spring (one inside the other) I got from Summit. I always suggest dual return springs on or off the track. Recall that car was finished just before the Fling and came to me with one spring. The spring mount came from Provo.
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Jamo
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10-20-2003, 05:35 AM
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Senior Club Cobra Member
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Join Date: Mar 1999
Location: Yuma, AZ / Whitefish, Mt.,
Posts: 483
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Not Ranked
Brent
Just on a whim I checked my throttle last week and found out I was shorting myself about an inch of throttle travel on both carbs. That was an easy fix now the wife tells me to fix my other shortness I have no idea what she is talking about.
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10-20-2003, 06:36 AM
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CC Member
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Join Date: Jul 2002
Location: rocky river,
Oh
Cobra Make, Engine: Unique 289FIA / SA 351W / a truly glorious machine
Posts: 3,949
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Not Ranked
Re: 25% more horsepower....FREE!!
[quote] Originally posted by Brent Mills
[b]I'll preface this with the fact that I am such a dork sometimes.....
Dork!
and Turk, What's this crap about a fourth gear??????? 
Last edited by casaleenie; 10-20-2003 at 06:38 AM..
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10-20-2003, 01:13 PM
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Administrator
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Join Date: Jan 1999
Location: Duvall,
Wa
Cobra Make, Engine: KMP286, Shelby 482, Webers, 593HP
Posts: 4,162
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Not Ranked
Fred, you too!
Casaleenie... It's not the first time and won't be the last that I am referred to as a dork when it comes to cars. |
10-20-2003, 02:01 PM
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CC Member
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Join Date: Mar 2001
Location: Cinnaminson,
NJ
Cobra Make, Engine: Cobra Fibercraft Bodies 427 S/C, 351W disguised as a 427.
Posts: 391
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Not Ranked
Here is a photo of my engine bay with a homemade linkage using 1/4" stainless rod and several Heim ends. This type of linkage is easy to fabricate and should work very well with a turkey pan. <BR>
By the way, the engine is a 351W, not a 427FE. <P>
<img src="http://mywebpages.comcast.net/superhart/fake427-6.jpg">
__________________
Political correctness is a doctrine, fostered by a delusional, illogical minority, and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end."
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10-20-2003, 03:00 PM
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Senior Club Cobra Member
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Join Date: Jun 2001
Location: North Metro Atlanta,
GA
Cobra Make, Engine: 2 dr roadster, V-8, 4 spd.
Posts: 2,780
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Not Ranked
Quote:
Originally posted by Jamo
I now have a proper dual return spring (one inside the other) I got from Summit. I always suggest dual return springs on or off the track. The spring mount came from Provo.
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Jamo, I have the same spring mount, but did not use it yet as here is my question. That linkage in the pic (identical to mine) pulls the throttle open by pulling the rod that hooks to the carb backwards. In the pic I posted, the spring is also pulling backwards pressure, is it not? How do you get the springs to snap the throttle/throttle linkage rod forwards which is what they should do? Do you have them go forward and then come back underneath the pan so they are in fact pulling forward? I am simply asking cause I stare at my setup every day trying to figure a way for the springs to work. And I am with you, next to a rev limit chip, these things WILL save your A$$/motor.
[edit for clarity in question]
Last edited by ToyCollector; 10-20-2003 at 07:43 PM..
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10-20-2003, 06:46 PM
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(An All-Around Nice Guy)
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Join Date: Aug 2000
Location: Camden,
SC
Cobra Make, Engine: Unique Motorcars (sold)
Posts: 1,582
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Not Ranked
SuperHart - Good God... that's the cleanest freakin' engine bay I've ever seen!
TC - Maybe he's got cruise control?
__________________
Keith
Former Unique owner.
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10-20-2003, 09:08 PM
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CC Member
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Join Date: Apr 2003
Location: Woodbury,
NY
Cobra Make, Engine: KMP/427co
Posts: 257
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Not Ranked
TC, do these pics help?
Here's looking down from the top of the engine, you can see the return spring on the bottom...
and just for completeness, the return spring from the side of the turkey pan:
Kinda went camera crazy this evening...
Shaps |
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