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Ram air hood springs
#1
Need a pair of restorable square OD hood springs.  Will buy complete hinge assemblies if available
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#2
(10-09-2019, 07:22 PM)boss49472 Wrote: Need a pair of restorable square OD hood springs.  Will buy complete hinge assemblies if available

If Bill doesn't have them , I do
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#3
OOOOH - I need these too!

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Mike
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#4
I could use a pair; if any available. Correct in that ram air are 22 loops? Mine are 18 but does look like flat steel. (71)
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#5
So you know asked the seller of the NOS Ram Air spring (and 2 used ones) last year to STOP his auction and I traded a Space saver Spare bottle as I working with a Retailer and "spring manufacturer" to reproduce the spring!

They turned to 3 manufacturers , none which could figure out HOW they were produced ! One going so far as to contact the 80 year old prior owner as to wire, techniques and processes . Calling it "piano style" (flat sided) they just said NO.

Funny I just took the tag off the returned NOS one yesterday (to use on some parts I'm dipping as an ID for Right side71 pr! We know there is no source, Bob had a set in PA for $300 but not NOS so I didn't buy as they needed NEW to test the spring rate. (Hence the trade in December)

Anyway , today I'm thinking I may need for my Boss (no more R code projects are in my future) . PLUS, not sure I feel good about selling right now anyway. Been looking at a box of 200 year old books, I now value at much less too !

Mark
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#6
(03-25-2020, 04:08 PM)LightShow Wrote: I could use a pair; if any available.  Correct in that ram air are 22 loops?  Mine are 18 but does look like flat steel.  (71)
I have not heard of the difference in coil count. Is there any info on this? Seems to me more loops equals softer spring. Or was there a different spring for the presumably heavier Cougar hood?
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#7
(03-25-2020, 04:08 PM)LightShow Wrote: I could use a pair; if any available.  Correct in that ram air are 22 loops?  Mine are 18 but does look like flat steel.  (71)
They are all 18 coils, never ran across a 22 coil 

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#8
I have never really looked at the build sheet but there should be a box for the hood hinge or spring for either NASA or flat hood. Every NASA hood I ever saw had the flat springs regardless of RA or not. 
My original 73 Mach 1 sat with the hood closed all those years and when I cleaned up the hinges and did the phosphate again and lubed them the hood would fall if you rocked the car. The hinges for sure are not worn out was not opened that much. When I did the phosphate to allow it to get between the coils I cut a length of 1/2" conduit and stretched the spring out a little so the solutions got in between. 
With the hood closed all the time the springs are stretched out to their limits and loose tension.
So if you get some old springs they might not keep the hood up. I cut a prop that I put in when at shows so it does not fall on someone's head. 
I am going to go looking for another spring I can put inside the original to boost the tension.


When a man is in the woods and talks and no women are there is he still wrong??
Tongue
David
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#9
Both of my 71 Mach 1's are non ram air cars but both have 18 coil flat-sided springs.  I did add ram air to both and did not have a problem with the hood falling.
The 71-73 Cougar used the same hood hinge as the 71-73 Mustang but only used the round wire hinge spring. The Cougar hood was not heavier than the Mustang version but probably gave the appearance since the way it fit around the upper part of the grill.
Ram air Cougars used the system where there was a flapper door in the air cleaner lid much like you would see on the 428 Torino and Mustangs. The Cougar fiberglass hood scoop was lighter than the plenum chamber and all the associated hardware on the Mustang. That probably had a lot to do with the engineers not feeling a need for the flat side coil spring as used on the  Mustang NASA hood.
Another option to consider if you can't find the springs you need or the flat side coil springs still won't hold the hood up. A former member here took some hood springs to a welder who welded two coils together increasing the spring rate. When done to the bottom side of the spring it was a nearly invisible modification.   Smile

Steve

No Officer...I really don't know how fast I was going, my speedometer stopped at 140!
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#10
(03-26-2020, 09:21 AM)Carolina_Mountain_Mustangs Wrote: I have never really looked at the build sheet but there should be a box for the hood hinge or spring for either NASA or flat hood. Every NASA hood I ever saw had the flat springs regardless of RA or not. 
My original 73 Mach 1 sat with the hood closed all those years and when I cleaned up the hinges and did the phosphate again and lubed them the hood would fall if you rocked the car. The hinges for sure are not worn out was not opened that much. When I did the phosphate to allow it to get between the coils I cut a length of 1/2" conduit and stretched the spring out a little so the solutions got in between. 
With the hood closed all the time the springs are stretched out to their limits and loose tension.
So if you get some old springs they might not keep the hood up. I cut a prop that I put in when at shows so it does not fall on someone's head. 
I am going to go looking for another spring I can put inside the original to boost the tension.
"did the phosphate again.... "


You keep saying the brown Mach 1 and the yellow convertible are all original
So I have to ask at what point is a car not ALL original in your opinion ?
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