Hey my name is Cory and i have an interesting problem. My '79 rx7 has a heavily ported 6 port motor and a Weber ida 48. It also has the distributor from the mid 80's so no more points. The car likes a crazy amount of timing to run. making it crazy hard to get started. I had a friend suggest that i i split the leading and trailing spark. Use the trailing spark as a retarded timing to start the car then shut off the trailing and run the car on the leading spark. Does anyone have any experience with this? A simple schematic is really what im looking for. My friend now lives 400 miles away making it difficult to get his help on it.

 

Your question is a very good one(perhaps too technical for this section),so it may get answered better by making your way into the 1st gen specific Section.
We Try as best we can Up here in New tech,but if the answers can't be found here, then there is always another venue.

 

Thank you for the suggestion misterstyx69 and i will head that way. Thank you for all your help.

 

It sounds like the dizzy may be stabbed one tooth off.

 

i have been down that road. One i first built this 13b bridge it was. When its off a tooth you have to be all the way to one side on the adjustment and when you do get it running it was backfiring like a beast and dropping rotor 2. By the way the dizzy got stabbed wrong by Pineapple Racing in Portland. Being my first build it took a while to figure out why it ran so bad.

 

have you considered locking the distributor?

i'll link this thread for now, in case there's something in that you can use.
https://www.rx7club.com/1st-generati...cement-956631/

 

You hit the Mother-lode Cory!..lol!.. and got 3 MODS to answer!
Five will get you a Pony!
(Ps: I think my Next Rx7 is gonna be a 1st gen!)

 

Bridgeports do take a lot of timing to run correctly, and that Weber is going to struggle to keep consistent AFRs with the strong intake pulses generated by those ports. That compounds the problem.

Another dumb question...you don't have the leadings and trailings reversed, do you? That would explain it.