427 Assembled - ZR-1 Net Registry Forums

tpepmeie · 05-11-2013

So, I took the car back to the DynoJet today. Actually, two DynoJets, one in the morning and one in the afternoon to confirm.

Hit 638rwhp (SAE) in the morning session. 548 rwtq.

I cannot get enough fuel in it from 5000-6500... no matter what I try, the AFR is 13.5:1. Fuel Pressure is OK, but no amount of change to the fuel table will fatten it up. Conclusion I am drawing is that the injectors are maxed out.

They were allegedly 26lb'ers, but I don't think that can be. Will have them tested, and probably go for 30's next time. I even changed the table offset to try to gain fuel, but wouldn't budge.

The afternoon session on the other side of town was 634 rwhp, with water temps over 200F. So I am pretty comfortable that the morning session is accurate (also made that number last August). It seems to be consistently at this number.

Will post the sheets and maybe a vid later.

Todd

05-11-2013	#16
tpepmeie Join Date: Aug 2005 Location: Fishers, IN Posts: 815	Re: 427 Assembled So, I took the car back to the DynoJet today. Actually, two DynoJets, one in the morning and one in the afternoon to confirm. Hit 638rwhp (SAE) in the morning session. 548 rwtq. I cannot get enough fuel in it from 5000-6500... no matter what I try, the AFR is 13.5:1. Fuel Pressure is OK, but no amount of change to the fuel table will fatten it up. Conclusion I am drawing is that the injectors are maxed out. They were allegedly 26lb'ers, but I don't think that can be. Will have them tested, and probably go for 30's next time. I even changed the table offset to try to gain fuel, but wouldn't budge. The afternoon session on the other side of town was 634 rwhp, with water temps over 200F. So I am pretty comfortable that the morning session is accurate (also made that number last August). It seems to be consistently at this number. Will post the sheets and maybe a vid later. Todd