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Author Topic: Unknown spring  (Read 1147 times)

Offline mcx

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Unknown spring
« on: November 15, 2019, 02:19:55 PM »
This was in a qjet that I disassembled..I didn't notice where it was placed as it just fell out....Anyone ever seen this spring before?
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Offline Kenth

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Re: Unknown spring
« Reply #1 on: November 16, 2019, 01:53:45 AM »
Looks like a secondary power piston spring used with the primary power piston spring in most 1973-74 Olds Quadrajets?
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Offline mcx

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Re: Unknown spring
« Reply #2 on: November 16, 2019, 06:13:31 AM »
..really?  never seen one before and I've overhauled about 10 recently...this fell out of this 1974 Buick 455 version...it does have the C primary type rods, which are in every early 70s I have built....thanks for the info...Mike
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Offline Cliff Ruggles

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Re: Unknown spring
« Reply #3 on: November 16, 2019, 10:34:49 AM »
Maybe someone was using it behind the fuel filter, but it is not a factory part from what I can tell...
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Offline Kenth

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Re: Unknown spring
« Reply #4 on: November 16, 2019, 02:43:20 PM »
Just checked the Delco Manual Bulletin 9C-1038 for 1974 Buick  Quadrajets and they all uses a secondary power piston spring #7040162 to complement the primary power piston spring #7040498.
If the spring fits in the power piston bore it might very well be it.
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Offline mcx

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Re: Unknown spring
« Reply #5 on: November 16, 2019, 03:27:53 PM »
...thanks for the info...I'll see if it fits in the power piston bore.
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