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| Holley 1920 PV/Economizer No Workie... https://www.slantsix.org/forum/viewtopic.php?t=52819 |
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| Author: | 805moparkid [ Mon Jul 22, 2013 6:48 pm ] |
| Post subject: | Holley 1920 PV/Economizer No Workie... |
ok guys i rebuilt the carb on my 73,standard 1920. so with the help of .org and Ted i got the napa kit, cleaned and replaced everything, no biggie soldered up the low speed air bleed from 1/16 to .040 to get the emulsion system working (much better by the way) also my PV/Economizer valve was kicking in at 10inches of vac which is high, so i added a a second gasket under the housing and filed a little on the lever. one thing i noticed is that the at the idle before rebuild (750rpm) it was into the transfer slot, so i drilled an 1/8" hole into the butterfly and lowered the blade all the way, and out of the slot. ok so re-assembled and started to installed on the car, i noticed that the port for the PV was not open to manifold vacuum, the fiber spacer had no hole for it, hmm... so i cut a little out of it so there would be a path and installed it,cranked to get fuel and bam! idled amazing! was right at 750 and not a miss to be heard (1.5 turns out), but get into where the PV should be and its dead, flat on its face... so i limped it home(great cruise but no power below 7" of vac) pulled the econimizer cap off thinking the gasket may have plugged the hole, no dice. so i started it up and have a great vac signal right at the PV housing, so i plugged it and pushed the lever inside the body, idle didn't change... so thinking like a normal holley i got some rpm into it and pushed the lever again, nothing... so im thinking either the circuit is plugged or?? where does it suck its fuel from, i dont know where its getting its fuel so i wonder if low float would uncover it?? any help would be awesome! thanks guys |
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| Author: | Doc [ Tue Jul 23, 2013 8:45 am ] |
| Post subject: | |
Time to start "poking around" into that sealed 1920's metering block. A spry can of carb sleaner is your "friend". Inspect the gasket carefully, to be sure a passage did not get blocked. 1920s are a PITA when they don't work right.... DD |
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| Author: | 805moparkid [ Tue Jul 23, 2013 12:37 pm ] |
| Post subject: | |
Quote: Time to start "poking around" into that sealed 1920's metering block.
everything was working fine before the rebuild i just wanted to close up the low speed air bleed... checked the gasket on both the body and block and it lined up perfectly...A spry can of carb sleaner is your "friend". Inspect the gasket carefully, to be sure a passage did not get blocked. 1920s are a PITA when they don't work right.... DD im gonna pull the block and see if i cant blow out the piece of crap that must be in there |
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