Timing Advice for Carbed fc
12-18-20, 11:10 AM
#1
Junior Member
Thread Starter
Timing Advice for Carbed fc
Hello!
Someone said to post this here since fb people may have a better idea how to properly time a carbed rotary.
I bought an 1987 fc that had all the stock intake and emissions equipment chopped and hacked up by the previous owner.
I mean it was bad, he just put jb weld over everything he had removed from the throttle body, cut all the emission wiring, and nothing worked.
So after rebuilding and street porting it, I slapped a RB Holley Carb on it and it runs!
It is obviously running really rich and needs to be timed, I have never timed a rotary before, let alone one that has been carbed. So I am here for advice/moral support before I take the dive this weekend. What advice would you all give, should i time it first, and then adjust idle mixture and speed screw? or vice versa? Any advice is appreciated!
I will of course look at factory instructions, but since this is kind of an odd situation I just wanted to check in for advice first.
For more background it is a 1987 N/a base model, street ported, RB tuned Holley 600 CFM, no OMP (running premix), It uses the stock ignition and tps
Someone said to post this here since fb people may have a better idea how to properly time a carbed rotary.
I bought an 1987 fc that had all the stock intake and emissions equipment chopped and hacked up by the previous owner.
I mean it was bad, he just put jb weld over everything he had removed from the throttle body, cut all the emission wiring, and nothing worked.
So after rebuilding and street porting it, I slapped a RB Holley Carb on it and it runs!
It is obviously running really rich and needs to be timed, I have never timed a rotary before, let alone one that has been carbed. So I am here for advice/moral support before I take the dive this weekend. What advice would you all give, should i time it first, and then adjust idle mixture and speed screw? or vice versa? Any advice is appreciated!
I will of course look at factory instructions, but since this is kind of an odd situation I just wanted to check in for advice first.
For more background it is a 1987 N/a base model, street ported, RB tuned Holley 600 CFM, no OMP (running premix), It uses the stock ignition and tps
12-18-20, 01:09 PM
#3
Junior Member
Thread Starter
12-18-20, 01:13 PM
#4
Personally, I timed it to stock, calibrated the carb, then advanced to timing a little as per Racing Beat suggestions, and finally made any fine-tuning to the carb last. Is it the correct way? I don't know. Does it run and have decent AFRs? Yeah decent enough. I'll probably continue messing with it as I learn more.
12-18-20, 03:03 PM
#5
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