T-MAN
misunderstood
Hello, Im in need of some help with my 24valve that i have ppumped. Im having no luck getting it to pull past 3600-3700 rpm under a load. it will free rev to 4k without a problem.
motor is a 2001 24valve, hamilton 188/220 cam, 103# springs, ported head, 7x12 injectors flowed @3800 mililiters per minute and popped @ 260 bar, benched pump 550cc 035 delivery valves and 4k springs (should have full fuel to 4500), .093 lines and cross tubes, .020 marine head gasket , stock so pistons, 62 over a 478 twins and a adjustable pump gear.
I have checked all the basic things, full throttle, fuel shutoff ( i unhooked and zip tied full up) , fuel pressure is at 50 and timing.
Originally on the timing i set it to 21* and it missed real bad at 2100-2300 rpm so i advanced to 27* and that all went away.
I took it to the track and my best time is 12.17 @ 111 and no matter what i try it falls off around 3500-3600 rpm *72 lbs of boost
After speaking with the pump builder i found out the plunger lift chart is useless with a modified pump, so i bought a timing light adapter and i was only at 15* so i advanced to 25* at the injector and 31.5 at the pump it was 6.5* different. so now i thought i was good to go, truck feels snappier and sound different but still lays down around 3600.
Im not sure what other info may be needed to help me out but just ask.
sorry for the long post, just wanted to try to cover everything. Thanks in advance for any help.. and happy 4th of july..
motor is a 2001 24valve, hamilton 188/220 cam, 103# springs, ported head, 7x12 injectors flowed @3800 mililiters per minute and popped @ 260 bar, benched pump 550cc 035 delivery valves and 4k springs (should have full fuel to 4500), .093 lines and cross tubes, .020 marine head gasket , stock so pistons, 62 over a 478 twins and a adjustable pump gear.
I have checked all the basic things, full throttle, fuel shutoff ( i unhooked and zip tied full up) , fuel pressure is at 50 and timing.
Originally on the timing i set it to 21* and it missed real bad at 2100-2300 rpm so i advanced to 27* and that all went away.
I took it to the track and my best time is 12.17 @ 111 and no matter what i try it falls off around 3500-3600 rpm *72 lbs of boost
After speaking with the pump builder i found out the plunger lift chart is useless with a modified pump, so i bought a timing light adapter and i was only at 15* so i advanced to 25* at the injector and 31.5 at the pump it was 6.5* different. so now i thought i was good to go, truck feels snappier and sound different but still lays down around 3600.
Im not sure what other info may be needed to help me out but just ask.
sorry for the long post, just wanted to try to cover everything. Thanks in advance for any help.. and happy 4th of july..