08-04-2012, 09:48 PM
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CC Member
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Join Date: Mar 2003
Location: PVE,
CA
Cobra Make, Engine: ERA 289 FIA #2027, 65' 289" PS wheels
Posts: 345
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Not Ranked
whistling/shrieking Holley
On my 67' Corvette, the Holley 1850, after about 10 years, would scream so loud you could hear it on the freeway.
Eventually I took the carb apart and used 220 wet/dry paper to sand the flats on the main body...metering block...float bowls...any surface that was supposed to be flat...
Used a milled steel saw table as the base when possible, moved the piece in figure 8's over the sand paper with a little water.
The carb was quiet for several months...eventually the noise returned, but for a while it was quiet and didn't weep gas from every joint.
So, a vacuum leak, why ?..... something is not sealing...you may be able to sand it flat or have it milled....or if the old pot-metal castings are disintegrating....give it up and get newer parts.
Not your imagination, they can make horrendous noise.
Pete
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ERA 289 #2027
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