well I finally made it to the track, SAME FRIGIN fuel pressure problem as before GERRRRRRR, BUT I pulled 3 wheelies LOL, MPH was down at least 4mph because of fuel pump problems, still ran a best of 10.93,,,,,,,,1.51 60 ft, also got to race a new Super Stock Challenger, he kicked my a$$
Last edited by csk; 01/07/2206:10 PM.
1968 Charger COLD A/C Hilborn EFI 512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim 2020 T/A 392 Stock 11.79 @ 114.5
I cant duplicate it on the street, will post video & you can hear it, on the data log it spikes very fast through out the run from 20 psi back up to 50, in a 1 second veiw in the log it does it about 4 times Yes 1st 10 ,, and I remembered to shift LMAO
Last edited by csk; 01/07/2206:20 PM.
1968 Charger COLD A/C Hilborn EFI 512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim 2020 T/A 392 Stock 11.79 @ 114.5
Great news on the 10! It looks cool with the injection stacks.
Can you log voltage to the pump? That might help narrow it down.
I will do that 1st, BUT I rewired it after the last time with a HD relay now in the trunk, its just hard to test on the streets now that my Used to be small town has exploded & is now basically Houston. traffic is REALY bad now.
1968 Charger COLD A/C Hilborn EFI 512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim 2020 T/A 392 Stock 11.79 @ 114.5
Re: 1968 Charger pass
[Re: CSK]
#3003082 01/08/2207:03 AM01/08/2207:03 AM
I love the launch pic! Car definitely not happy on the back half, though.
How fast was the Super Stock Challenger?
Thanks guys for the positive responses, even with all the problems I have had with this car this day made me VERY happy & felt it has all been worth it, did I tell Y'all I remembered to shift LOL !!!! That pass was a 10.20ish, 1st time out for it, later ran 10.teens, with worse air. it pulled the wheels also
Last edited by csk; 01/09/2201:41 PM.
1968 Charger COLD A/C Hilborn EFI 512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim 2020 T/A 392 Stock 11.79 @ 114.5
Re: 1968 Charger pass
[Re: CSK]
#3008453 01/24/2210:58 AM01/24/2210:58 AM
I was sent another picture, Had to share with Y'all, it made all the work on my street car worth it, puts a big ole smile on my face even though I still have the fuel pump issue
1968 Charger COLD A/C Hilborn EFI 512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim 2020 T/A 392 Stock 11.79 @ 114.5
Re: 1968 Charger pass
[Re: CSK]
#3008455 01/24/2211:07 AM01/24/2211:07 AM
Is the point where the engine starts to have the misfire issue the highest rpm on track to that point? And what is the rpm where it starts acting up?
I’m just wondering if it’s possibly a valvetrain issue, and the fluctuating fuel pressure is just a by product of the EFI chasing the fuel curve around after the valvetrain gets unhappy.
What I think/recall you had for springs and RR seemed to me like it might be on the edge for high rpm control considering the weight of the lifters.
To test it, you would see if you could duplicate the misfire in 2nd gear, and if it does....... see if shifting into 3rd made the misfire go away.
Just spitballing....... since the fuel system work has to this point been unsuccessful.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
Re: 1968 Charger pass
[Re: CSK]
#3008466 01/24/2211:49 AM01/24/2211:49 AM
1969 Dart GTS 340 1969 Super Bee X9 N-96 1969 Coronet R/T X9 N-96 2015 Dodge Dart GT 2019 Ram 2500 Big Horn. Looking for the original block for my Bee. The last 4 are 7449
Is the point where the engine starts to have the misfire issue the highest rpm on track to that point? And what is the rpm where it starts acting up?
I’m just wondering if it’s possibly a valvetrain issue, and the fluctuating fuel pressure is just a by product of the EFI chasing the fuel curve around after the valvetrain gets unhappy.
What I think/recall you had for springs and RR seemed to me like it might be on the edge for high rpm control considering the weight of the lifters.
To test it, you would see if you could duplicate the misfire in 2nd gear, and if it does....... see if shifting into 3rd made the misfire go away.
Just spitballing....... since the fuel system work has to this point been unsuccessful.
It might have a spring issue also, BUT on the data log the fuel pressure problem starts right away, I can feel it laying down & then pick back up through the intire run, it starts banging in high gear at about 5500 rpm, but it will pull 6300 rpm in 1st & second without banging BUT I can feel it surging as the pressure comes & goes in 1st & second , that said I do think my springs are going away like you said.
Last edited by csk; 01/24/2212:38 PM.
1968 Charger COLD A/C Hilborn EFI 512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim 2020 T/A 392 Stock 11.79 @ 114.5
,, and I remembered to shift LMAO
