How to rebuild a Rochester Quadrajet 4MV carburetor
(→Throttle blade screw removal) |
(→Throttle shaft bore wear) |
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Throttle return springs used as shown below should be avoided: | Throttle return springs used as shown below should be avoided: | ||
[[File:Throttle return bad.jpg|thumb|800px|left|Bad throttle return spring orientation]] <br style="clear:both"/> | [[File:Throttle return bad.jpg|thumb|800px|left|Bad throttle return spring orientation]] <br style="clear:both"/> | ||
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| + | <b>No Drilling/Teflon Bushing fix</b> | ||
| + | I found a great article to re-bush the primary shaft with no drilling by simply cutting 0.00015 teflon sheet to size and using the outer holes (where most ppl re-drill/insert the bronze bush). Its a perfect fit. | ||
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| + | <br><br> Original article here: [http://67-72chevytrucks.com/vboard/showthread.php?p=4688535]<br> | ||
| + | [[File:QJet 3.jpg]]<br> | ||
| + | [[File:http://i175.photobucket.com/albums/w131/ray_mcavoy/QJet_throttle_shaft_bushings/QJet_10.jpg]]<br><br> | ||
| + | Whats nice about this is you can also bush the vacuum shaft as well. Excessive play stops the vacuum blades from opening/closing smoothly because the blades bind into the body. Most people fix this by increasing the spring tension. The teflon means you can pretty my bush more than the primary shaft without the need for more drilling, tubes, etc. Plus it leaves the body original. There are some nasty over drilled howto's that look awful. | ||
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=====Throttle blade screw removal===== | =====Throttle blade screw removal===== | ||
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