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04-13-2022, 02:31 PM
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#1 |
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Registered User
Join Date: Nov 2008
Location: Cleveland, OH
Posts: 592
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Exhaust flapper
Hey guys, I have a question. I just purchased an 85 K2500 GMC with the factory 350 and noticed it has the exhaust flapper/close off to aid in warm up on the passenger side still attached.
There looks like a vacuum diaphragm that pulls the flapper however I have no hose going to it. Or is some sort of spring that loosens up when heated sort of like a choke on a carb? Which way allows the exhaust to freely flow? Pulled in or resting?
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1972 Cheyenne Super 20 Custom Camper 12 Valve Cummins/5spd manual 1972 Cheyenne Super Short Bed 557 Med Olive DK olive 1970 K5 Blazer Dark Gold 1966 Coronet 440 35k mile survivor 1991 Suburban 2500 454/4L80E 2wd 1985 Monte Carlo SS 383 Sbc, t-56 magnum 6spd and Ford 9" Last edited by j_cst_10; 04-13-2022 at 02:38 PM. |
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