Acc Pump Diaphram - Team Camaro Tech
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post #1 of 6 (permalink) Old Jul 25th, 14, 12:13 PM Thread Starter
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Alan
 
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Acc Pump Diaphram

Hey guys, my acc pump is leaking from the diaphragm. I have a 69 Z 28 4053 Holley on my 69 Z 302. Do I need the 30 or 50 cc pump diaphragm? They also list if they put alcohol in the gas where you live. I am in Southern California and haven't a clue what they put in the gas here.

thanks for the assist

alan
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post #2 of 6 (permalink) Old Jul 25th, 14, 12:15 PM
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Tom
 
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Re: Acc Pump Diaphram

30 CC and probably safe to assume they do put ethanol in. 10% here in MA.

'67 rs - ordered new by my Grandfather
327 L30, K-K, Deluxe int, tach & gauges, 12 bolt posi, 4 speed.

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post #3 of 6 (permalink) Old Jul 25th, 14, 09:33 PM Thread Starter
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Alan
 
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Re: Acc Pump Diaphram

Also, on the fuel pipe that goes to each bowl from the fuel block, are there supposed to be copper washers for any of the 5 connections or is it just the flare to the block? Those things have always been hard to seal.
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post #4 of 6 (permalink) Old Jul 25th, 14, 09:43 PM
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Mike
 
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Re: Acc Pump Diaphram

It's just flare , and it's probably the accelerator pump housing is warped from heat, usually it's not the diaphram. Face the hsg off on a piece of glass with some 180 paper.

2002 Jerry Bickle Cavalier, 446" Small Block, Brodix Canted Valve, lenco 5 speed, 7.54 @ 180. mph,1.06 60', 2235 lbs for 2014. GM Canada Docs, Highly Optioned 69 RSZ28 , Hugger Orange, White Stripes, 42,000 mile survivor, owned since 1973.
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post #5 of 6 (permalink) Old Jul 25th, 14, 10:12 PM Thread Starter
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Alan
 
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Re: Acc Pump Diaphram

Thannks Mike. I pulled the carb last night. The diaprhagm was really stiff and crappy. But I will check the housing for flatness. Good point!!!
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post #6 of 6 (permalink) Old Jul 27th, 14, 01:03 PM Thread Starter
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Alan
 
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Re: Acc Pump Diaphram

Per Holley, Tom was correct, a 30 cc diaprhagm and all Holley's rubber parts are now ethanol safe.

Thanks Guys!!!!
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