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Originally Posted by Ryanw10
(Post 4766869)
I was told it ran fine before the carb was rebuilt earlier this summer. Supposedly whoever rebuilt the carb screwed it up.
Next question: than why was it rebuilt ?Not running right ? We are not being pain in the azz, we just aren’t getting all the info. 12” vac at 1k is low for a basic oval port motor. |
Originally Posted by Ryanw10
(Post 4766874)
Sorry, this information was purely a starting point for me and that's all I wanted to use it as. I have no proof or information on what work was done before I got my hands on it other than I was told what I stated above. I have learned over the years to not trust what people "tell" you so I want to make sure all my bases are covered.
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Originally Posted by SB
(Post 4766876)
Okay. Thanks.
Next question: than why was it rebuilt ?Not running right ? We are not being pain in the azz, we just aren’t getting all the info. 12” vac at 1k is low for a basic oval port motor. I do not know why the carb was supposedly rebuilt. The 12" of vac I read was from the PCV port on the carb so it may be a touch low from actual intake measurements |
Originally Posted by Ryanw10
(Post 4766879)
I do not know why the carb was supposedly rebuilt. The 12" of vac I read was from the PCV port on the carb so it may be a touch low from actual intake measurements
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Are the transition slots set on the secondaries?
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Originally Posted by distantthunder
(Post 4767126)
Are the transition slots set on the secondaries?
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Originally Posted by Ryanw10
(Post 4767141)
They were initially set with no slot exposed. I opened them up to match the primaries. About .030" showing.
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Recap of everything I did to the motor:
Ignition Related: -timing at 10 degrees at 1000 rpms -new AC delco mr43T plugs -cap and rotor inspected and cleaned -wires checked for correct order Carb related -New gaskets -cleaned and inspected bowls and metering blocks -new needle and seats -cleaned and inspected accelerator pumps, replaced check valves. -new 6.5 power valves -cleaned accelerator pump nozzles -adjusted secondary transfer slots from showing zero slot to about .030" of slot exposed -regulated fuel pressure from 8 down to 6psi -adjusted idle air screws to 1.5 turns out -adjusted accelerator pumps -adjusted idle throttle blade screw 1 turn in from all the way disengaged -adjusted floats to the bottom of the sight hole -adjusted choke I think that's everything and none of it made any change to the way the motor ran, or started. Couple others things to note: -I re used the accelerator pumps and I dont know what size they are. The springs on the primary and secondary were different. -attached are pictures of the accelerator pump nozzles, it looks like they may have been attempted to be drilled out? https://cimg6.ibsrv.net/gimg/www.off...f6cda782e7.jpg https://cimg5.ibsrv.net/gimg/www.off...0bcf6bf22d.jpg |
Did you ever pull number 1 plug. And make sure dizzy was dropped right? Have you ever actually seen this motor run right? If not I’d go all the way back to square 1 and start over. You shouldn’t be on accelerators for idle. Do you know if it’s the stock cam?
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I would disconnect your throttle linkage, remove carb, set secondary transition slot to a square, reinstall the carb, loosen Idle screw all the way out. Leave the throttle disconnected and start the engine. If there is no change, I would think it is timing related and would loosen the distributor and rotate it to retard the timing. Something isn’t adding up here.
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