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-   -   25% more horsepower....FREE!! (http://www.clubcobra.com/forums/all-cobra-talk/46439-25-more-horsepower-free.html)

Brent Mills 10-19-2003 01:42 PM
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. :JEKYLHYDE

snake oil 10-19-2003 01:45 PM
Brent it is often the little minor
stuff that can make such a huge difference.
:D

Turk 10-19-2003 03:09 PM
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

Bob In Ct 10-19-2003 04:27 PM
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

FUNFER2 10-19-2003 04:57 PM
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

Nantucket427 10-19-2003 06:22 PM
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!:JEKYLHYDE

excelguru 10-19-2003 06:38 PM
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.

ToyCollector 10-19-2003 07:33 PM
This is a topic near and dear to my heart. Thanks for letting everyone know Keith :D :D . 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.

Jamo 10-19-2003 08:36 PM
TC

I hope it was mine...otherwise you're linkage is lacking one carb (Turk had a two carb setup).

Brent Mills 10-19-2003 08:40 PM
Wheew, I thought I was the only one to have done this.... :LOL:

ToyCollector 10-19-2003 08:48 PM
Was yours then Jamo. how you have the throttle spring set up is beyond me.

http://www.gasholes.com/yabbse/galle...s/tlinkage.jpg

Turk 10-19-2003 08:51 PM
TC,
It is beyond HIM also.

TURK

Jamo 10-19-2003 09:12 PM
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.

Fred Hamilton 10-20-2003 05:35 AM
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.

casaleenie 10-20-2003 06:36 AM
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!

:LOL: :MECOOL:

and Turk, What's this crap about a fourth gear???????:confused:

Brent Mills 10-20-2003 01:13 PM
Fred, you too! :LOL:

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. :)

SuperHart 10-20-2003 02:01 PM
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.

By the way, the engine is a 351W, not a 427FE.



ToyCollector 10-20-2003 03:00 PM
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.
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]

excelguru 10-20-2003 06:46 PM
SuperHart - Good God... that's the cleanest freakin' engine bay I've ever seen!

TC - Maybe he's got cruise control? :LOL:

shaps 10-20-2003 09:08 PM
TC, do these pics help?
 
Here's looking down from the top of the engine, you can see the return spring on the bottom...
http://www.clubcobra.com/photopost/d...p_view-med.jpg

and just for completeness, the return spring from the side of the turkey pan:
http://www.clubcobra.com/photopost/d...spring-med.jpg

Kinda went camera crazy this evening...
Shaps:LOL:


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