ConcoursMustang Forums

1st Generation 1964 1/2 - 1973 - Questions & general discussions that apply to a specific year => 1966 Shelby => Topic started by: 6S1284 on August 24, 2017, 10:47:28 PM

Title: Darn it - Me Again - 66 Throttle Spring Bracket photo?
Post by: 6S1284 on August 24, 2017, 10:47:28 PM
Does anyone have a close up of throttle linkage and spring/bracket -
I searched but did not find anything.  I found some shots for other code motors and later motors.

Thanks !

Title: Re: Darn it - Me Again - 66 Throttle Spring Bracket photo?
Post by: J_Speegle on August 25, 2017, 12:22:09 AM
Since this is for a Shelby what carb does your car have?

Here is a picture of a Holley equipped Shelby from the time period

(http://www.concoursmustang.com/forum/gallery/8/6-240817232941-8187244.jpeg)


If Autolite there is a discussion in the Mustang area but I'm still finding at least 66 GT350s with Autolites routed differently than what is considered "normal" on Mustangs


(http://www.concoursmustang.com/forum/gallery/8/6-240817233318-81881892.jpeg)

Might be the guy that swapped the intake manifolds at the engine plant  ::)
Title: Re: Darn it - Me Again - 66 Throttle Spring Bracket photo?
Post by: 6S1284 on August 25, 2017, 12:58:40 AM
Autolite -  is that a bracket on the carb stud? 
Title: Re: Darn it - Me Again - 66 Throttle Spring Bracket photo?
Post by: Bob Gaines on August 25, 2017, 12:59:43 AM
Since this is for a Shelby what carb does your car have?

If Autolite there is a discussion in the Mustang area but I'm still finding at least 66 GT350s with Autolites routed differently than what is considered "normal" on Mustangs


(http://www.concoursmustang.com/forum/gallery/8/6-240817233318-81881892.jpeg)

Might be the guy that swapped the intake manifolds at the engine plant  ::)
In the second picture It appears that the spring in this picture has been disconnected from the normal spot on the throttle rod and is just laying not connected to anything . I mocked up a carb and spring laying in the exact spot to mimic the picture to confirm my suspicions . 
Title: Re: Darn it - Me Again - 66 Throttle Spring Bracket photo?
Post by: rockhouse66 on August 25, 2017, 09:17:17 AM
Nice catch Bob.  Agree.
Title: Re: Darn it - Me Again - 66 Throttle Spring Bracket photo?
Post by: 6S1284 on August 25, 2017, 10:41:31 AM
So does that spring go "backwards" from where it is now and attach to the bend in the throttle linkage?

Title: Re: Darn it - Me Again - 66 Throttle Spring Bracket photo?
Post by: 67gtasanjose on August 25, 2017, 11:26:41 AM
So does that spring go "backwards" from where it is now and attach to the bend in the throttle linkage?
"Mustangs", yes...I'll let the Shelby guys confirm for your application (but I would say "Yes")
Title: Re: Darn it - Me Again - 66 Throttle Spring Bracket photo?
Post by: jwc66k on August 25, 2017, 12:53:04 PM
In the second picture It appears that the spring in this picture has been disconnected from the normal spot on the throttle rod and is just laying not connected to anything . I mocked up a carb and spring laying in the exact spot to mimic the picture to confirm my suspicions .
Maybe, maybe not. A blow-up of the original shows the end of the spring hooked on part of the throttle shaft arm.
Jim
Title: Re: Darn it - Me Again - 66 Throttle Spring Bracket photo?
Post by: 6S1284 on August 25, 2017, 01:03:40 PM
Maybe, maybe not. A blow-up of the original shows the end of the spring hooked on part of the throttle shaft arm.
Jim

Yes -  I just did that and you can see the coils of the spring are un-relaxed such that it IS attached to something.

Title: Re: Darn it - Me Again - 66 Throttle Spring Bracket photo?
Post by: Bob Gaines on August 25, 2017, 03:53:19 PM
Yes -  I just did that and you can see the coils of the spring are un-relaxed such that it IS attached to something.
if you read my post you will read that I mocked up a hipo carb on a shelby intake and looked at it from all angles. With that said the first hand inspection of the real thing in comparison to the picture blown up or not indicates that this is not any kind of factory secondary attachment point for the spring. If you are still skeptical I suggest you do what I did.
Title: Re: Darn it - Me Again - 66 Throttle Spring Bracket photo?
Post by: J_Speegle on August 25, 2017, 05:01:21 PM
Autolite -  is that a bracket on the carb stud?

Yes on both versions and V8 engines of this year and type

As far as the picture I posted

Its attached to the lower end of the throttle arm at the end of the throttle shaft ;)

Agree I could have picked a better angle or another example that showed it better So here is another

(http://www.concoursmustang.com/forum/gallery/8/6-250817160514-8516161.jpeg)


With that offered can't suggest that we know this is the only way they were installed. They may have been installed and attached the typical Mustang way also during periods of production
Title: Re: Darn it - Me Again - 66 Throttle Spring Bracket photo?
Post by: 6S1284 on August 25, 2017, 10:16:19 PM
if you read my post you will read that I mocked up a hipo carb on a shelby intake and looked at it from all angles. With that said the first hand inspection of the real thing in comparison to the picture blown up or not indicates that this is not any kind of factory secondary attachment point for the spring. If you are still skeptical I suggest you do what I did.

Understood -  thanks for that re - clarification and for your help!
Title: Re: Darn it - Me Again - 66 Throttle Spring Bracket photo?
Post by: 6S1284 on August 25, 2017, 10:19:12 PM
You guys are so darn helpful - 

Thanks again

Dave Shaffer  and 6S1284
Title: Re: Darn it - Me Again - 66 Throttle Spring Bracket photo?
Post by: Bob Gaines on August 25, 2017, 11:15:03 PM
Here is what I was looking at when I mocked up the carb and spring . Given my scenario you can understand my conclusion better . After Jeff posted his side veiw picture I now see how it was attached on that carb. On my carb the attachment point was not viable  hence I thought it was unattached . On may throttle arm there is no additional hole for the spring. When I  tried to attach it similar to the blow up picture but without a hole it appears to be in a bind. Unless it has a hole it does not seem practical. I am not that up on my Ford Hipo carbs. I typically only work with the Holley's . Is the missing hole on my hipo carb throttle arm out of the ordinary or do they all have a hole in the throttle arm for a spring . I have only seen them attached to the accelerator crook of the arm so the alternate attachment  looked odd to me. Help me understand.
Title: Re: Darn it - Me Again - 66 Throttle Spring Bracket photo?
Post by: J_Speegle on August 25, 2017, 11:23:32 PM
Here is what I was looking at when I mocked up the carb and spring . Given my scenario you can understand my conclusion better . After Jeff posted his side veiw picture I now see how it was attached on that carb. On my carb the attachment point was not viable  hence I thought it was unattached . On may throttle arm there is no additional hole for the spring. When I  tried to attach it similar to the blow up picture but without a hole it appears to be in a bind. Unless it has a hole it does not seem practical. I am not that up on my Ford Hipo carbs. I typically only work with the Holley's . Is the missing hole on my hipo carb throttle arm out of the ordinary or do they all have a hole in the throttle arm for a spring . I have only seen them attached to the accelerator crook of the arm so the alternate attachment  looked odd to me. Help me understand.

The spring in your example is installed from a different direction and it appears the end at the spring end was inserted first them to the throttle arm
Title: Re: Darn it - Me Again - 66 Throttle Spring Bracket photo?
Post by: Bob Gaines on August 25, 2017, 11:47:57 PM
The spring in your example is installed from a different direction and it appears the end at the spring end was inserted first them to the throttle arm
Do you mean like this? It still appears to be in a bind.
Title: Re: Darn it - Me Again - 66 Throttle Spring Bracket photo?
Post by: J_Speegle on August 26, 2017, 01:37:36 PM
Do you mean like this? It still appears to be in a bind.

Looks like your throttle plate is of a different design that the one I posted. Will find another to post. But it appears yours is shorter and lacks the hole used in the picture I posted of the unrestored late car
Title: Re: Darn it - Me Again - 66 Throttle Spring Bracket photo?
Post by: Bob Gaines on August 26, 2017, 02:29:49 PM
Looks like your throttle plate is of a different design that the one I posted. Will find another to post. But it appears yours is shorter and lacks the hole used in the picture I posted of the unrestored late car
Yes I agree . That is what I observed and wrote about in reply #13.  Also I posted  " I am not that up on my Ford Hipo carbs. I typically only work with the Holley's . Is the missing hole on my hipo carb throttle arm out of the ordinary or do they all have a hole in the throttle arm for a spring . I have only seen them attached to the accelerator crook of the arm so the alternate attachment  looked odd to me. Help me understand. " Just looking for insight so I can understand better.
Title: Re: Darn it - Me Again - 66 Throttle Spring Bracket photo?
Post by: J_Speegle on August 26, 2017, 06:00:06 PM
Yes I agree . That is what I observed and wrote about in reply #13.  .........................Just looking for insight so I can understand better.

Looked through pictures and found the arms without the holes were primarily found in 65 4100's ( A and K code)

5F07K2818xx & 5F07A2706xx (one of Mike M cars) were a couple of the latest (Sept 64)I have without the hole except for one (pictures do not show the stamped numbers) example that was on Ebay described as a "new take" Non K code carb.


As for those having the hole.

- Earliest example I found  was 5R09K2141xx - carb stamped C5OF J (It had been restored) 

- 6R07A1590xx

- 6R07K2040xx

- 6S1050 (It had been restored), 6S1177, 6S2086, 6S1455

- one loose (off the car) C6 C and one loose C7ZF C

Have one here at the house will have to dig it out and update the report.


Will likely repost with pictures over in another thread in another section since this concerns not just Shelby's
Title: Re: Darn it - Me Again - 66 Throttle Spring Bracket photo?
Post by: jwc66k on August 27, 2017, 11:49:14 PM
My "K" Fastback has the hole, 6R09K121xxx. It's toward the earliest with. Three pre 66 4100 carburetors do not.
Jim
Title: Re: Darn it - Me Again - 66 Throttle Spring Bracket photo?
Post by: Hipo giddyup on August 30, 2017, 11:23:36 AM
Actually I have been told the "hole" at the bottom throttle shaft is for automatic cars, from what I understand. Maybe others can verify with their original carbs?? The throttle shafts without this hole were used on standard shift applications like the C6FZ-C.. Please correct me if this is incorrect because I replaced the shaft on my C6ZF-F carb even though the first one had better plating.  :-[ I would like to know for sure as well.  Attached are some examples, though these again might not be all original carbs.
Title: Re: Darn it - Me Again - 66 Throttle Spring Bracket photo?
Post by: J_Speegle on August 30, 2017, 02:14:33 PM
Actually I have been told the "hole" at the bottom throttle shaft is for automatic cars, from what I understand. Maybe others can verify with their original carbs?? ..............

Have original examples that where I've know the car since the original owner and that speculation does not match what we're finding. Looks more of an early late thing to me right now. Need to post some pictures and get the discussion going over in the 65-66 sect6ion. Talked to Charles and he recalls four versions if you include service/NOS part versions