Is two batteries a must for a 1397 with the Gen One Starting system or is one big battery going to do the job in the summer heat?? Someone that has actually built one and personally put miles on one please reply.
and the answer also depends on compression...once you exceed 12:1 the need for 2 batteries gets involved. Starter kickback has as much to do with batteries as it does with the guy pushing the button. Keep that in mind.
I just built a preety stroker (everyday rider) which is starting on one bigger battery with 310 CCA 14 AH... I was hoping that would work. Customer wants a 1397 but wants zero starting issues. Schnitz has a 24V kit or Fastbygas does. Thanks for the replies all.
I run 2 batteries on mine. Dont intend on doing too much street riding with it. Its a pain, or you can run a switch so both batteries can stay charged. I dont ride on the street and put it on the charger after 2-3 starts
I have the ytz14s battery in mine and I have the 12.8 to 1 JE pistons and have never had a problem yet. That is everyday riding for the past 2 months. Hot starts and cold starts and have never had a problem. I was in the same boat as u earlier this year and decided to try out the ytz14s battery and it works great for me!
I'm interested in how it works. My 1340 is 13.2:1. With a ytz14s (230CCA) it is marginal when hot, but it does spin it without kickback. Even restarts after runs in the stagging lanes it would start. I'd rather it spin just a bit faster. I was thinking about trying a FBG 380CCA. If not, I'll be in the 24 volt camp.
I started with the YTS14s then went to the FBG battery. The best solution is the 24v. I could kick myself for not doing it sooner. It'll spin the engine right up with hardly cranking needed for the start.