dat521gatherer Posted July 28, 2008 Author Report Share Posted July 28, 2008 done and done. i drove it around for a couple weeks with 3 extra feet of wire that was bare at the ends just to see if it worked and a c-clamp to hold the dizzy in place. i went to pull-a-part and found a correct pedestal and adjusting plate. it's the l20b version on the right from a 77 620. the middle pedestal is the l16 and the one on the left is the naps. with the l20b pedestal i didn't need to turn the oil pump shaft. wiring before i shored it all up. i had grabbed a dizzy matchbox plug on a previous trip with as much extra wire on it as i could get. here i taped up the 2 matchbox wires to look nice before permanently installing with connectors. wiring after and i even ran the ground wire from the vac advance connector to the coil bracket. wiring done. i could have used the original points wire but then i would have to not used the cool dizzy match box plug. or i could have used the dizzy plug and chop the wire up close and tap in my original harness wire but it looks better with both coming off the correct plug thats why when i grabbed it i got as much wire with the plug as i could. maybe i'll look into getting a matching coil and beefier plug wires so i can bypass the ballast. thanks for all the help guys. 1 Quote Link to comment
Pacific coast Datsun Posted July 28, 2008 Report Share Posted July 28, 2008 Glad it all came together. Do you notice any performance differences yet? When you get the bigger coil you can also re gap the plugs to .044 Youll be getting a hotter spark & that will help. 1 Quote Link to comment
dat521gatherer Posted July 28, 2008 Author Report Share Posted July 28, 2008 to be honest i didn't notice a difference and always liked points but then again my valves were so tight nothing would have made a noticeable difference. now adjusting the valves made a huge difference like night and day. i tried a pertronics unit in my 65 dart years ago and it sucked. not only did it not make a difference on the rough idle i got shittier gas mileage. the adjusting plate hole was incorrect and unadjustable so the green tape ended up rubbing on the prongs and eventually the green tape came off and the maginets flew out. now that i realize the thing was out of adjustment i would someday give pertronics a second chance. but i shouldnt have to mod the adjusting hole on the pertronics plate. i miss that car. now i drive around with my points dizzy in a box under the seat jic. i know, i know set and forget but ya never know.:D 1 Quote Link to comment
Pacific coast Datsun Posted July 28, 2008 Report Share Posted July 28, 2008 Never tried a Petronix setup myself. On both my 521 & 620 i used a GM HEI module in place of the matchbox & they perform well. Quote Link to comment
dat521gatherer Posted August 20, 2008 Author Report Share Posted August 20, 2008 3rd tank 18+ mpg it's going down.:eek: 1 Quote Link to comment
banzai510(hainz) Posted August 20, 2008 Report Share Posted August 20, 2008 3rd tank 18+ mpg it's going down Obama says, "put air in your tires" 1 Quote Link to comment
mklotz70 Posted August 20, 2008 Report Share Posted August 20, 2008 Something to consider....that never really is.....the EI dizzy may have a different adv curve (both vac and mechanical) than the stock dizzy. You should get the correct coil so that you can open up the spark plug gap.....otherwise, you won't notice any positive difference over points...except that they won't wear out. 1 Quote Link to comment
dat521gatherer Posted August 20, 2008 Author Report Share Posted August 20, 2008 next time i'm at the yard it's my first priority. which will be step 12b-1a part c.:lol: i'm too cheap to buy a new one:D 1 Quote Link to comment
dat521gatherer Posted September 3, 2008 Author Report Share Posted September 3, 2008 ok step by step but now it's complete. got a coil from a 1980 720 scored the dizzy with it too. removed the ballast. opened plugs up to .042 and removed the e1 points relay. 1 Quote Link to comment
dat521gatherer Posted September 3, 2008 Author Report Share Posted September 3, 2008 some text added for fun. 1 Quote Link to comment
racerx Posted September 3, 2008 Report Share Posted September 3, 2008 looks good...sorry to hear you had bad exp. with Pertronix..all I can say is that no problem with 3 pertronix set -up..all is good with my 65 mustang, 75 Celica and 71 Datsun...no points, no dwell and installation was easy. 1 Quote Link to comment
fisch Posted September 21, 2008 Report Share Posted September 21, 2008 Somehow I missed this update! Awesome you got it all done, I have yet to do mine even after working out that wiring diagram. But now that my brakes are straight, it is time to look into it! The question of the day is, now that you have to proper coil, and have regapped the plugs. Do you notice a difference? 1 Quote Link to comment
dat521gatherer Posted September 21, 2008 Author Report Share Posted September 21, 2008 honestly i haven't noticed a difference with milage or performance.:( but my points wont be slipping anymore every month or 2. i haven't had any problems with the system. i could use a new cap and wires. i'm going to take a look at the plugs to see how they're doing. my weber is so over jetted that my best lean is at a half a turn out.:eek: and i'm not into messing with the jets. i'll have a milage update at the end of the week and will probably mess around with throwing a hitachi back on there to see what happens for fun. after i adjusted my valves around the same time as my dizzy swap there wasn't any more room for improvement as far as it running. those valves were like night and day. i will be checking the valves again just for fun. crap i dropped my wifes archos 604 last night and broke it.:mad: 1 Quote Link to comment
datzenmike Posted September 21, 2008 Report Share Posted September 21, 2008 I replaced my remote igniter with a matchbox about a year after I got the truck. Have never touched it in over 10 years!!! Drove it and forgot it. Once the center electrode in the cap fell through! It just wore it away. Well I never have to check the points so I'm never in there to see it. :lol: Now I sort of look at it every 4-5 years. :lol::lol: They're great. 1 Quote Link to comment
yello620 Posted September 21, 2008 Report Share Posted September 21, 2008 my weber is so over jetted that my best lean is at a half a turn out.:eek: and i'm not into messing with the jets. i'll have a milage update at the end of the week and will probably mess around with throwing a hitachi back on there to see what happens for fun. QUOTE] Why are you not interested in changing a jet? The weber is so incredibly simple. Why not at least start with finding out what size idle jet you have in there. You dont even have to take the carb apart to do it. That would be the first jet to change if you idle needle is that far in. Much simpler than the hitachi. Search, and HAINZ has some very good pics on here that show exactly which jet we are talking about. Takes a screwdriver and about 10 seconds to change the jet. Worth a shot. Jason 1 Quote Link to comment
dat521gatherer Posted September 21, 2008 Author Report Share Posted September 21, 2008 i've been reluctant on asking if the jets have numbers stamped/etched on them or if you have to go by site. if they are numbered i will eventually play with it but the hitachi's are supposed to get better milage from what i hear. actually i've heard both.:confused: i had a dhc-340 once that would have smoked any 32/36. anyway i just want to if my hitachi's still work decent. besides those big glass bowl windows turn me on for some reason. not the stupid little round hole ones.:D Quote Link to comment
djlotus Posted October 18, 2008 Report Share Posted October 18, 2008 old thread i apologize. quesiton is semi related i hope. i feel dumb asking this because i'm sure i know the answer (and had a confirm), but i figure i'd double (triple?) check. ei dizzys have a different cap/rotor than the regular points dizzy correct? dizzy i got has a cracked cap and no rotor. thus my question Quote Link to comment
Cuts metal like mad Posted October 18, 2008 Report Share Posted October 18, 2008 (edited) If your adjustments are that out of wack your jets are way off... (maybe not WAY off but certainly a couple sizes) sounds like you got that thing second hand and it probably came off a much larger motor, maybe a 258 jeep... :lol: (inside joke) jets here: http://www.racetep.com/weberX.html#jets Tuning guide here with jet sizes on second page: http://www.dimequarterly.tierranet.com/articles/tech_weber_tuning.html Edited October 18, 2008 by zuum510 Quote Link to comment
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