tryin to figure out timing

[cwbracer]

i just picked up an 89 lx hatch with a 347, it has jegs 2.02 heads trickflow stage 3 cam aeromotive fuel system. im playin with the car tryin to get it close to dialed in, anybody have any suggestions on what i should set my timing at and what fuel pressure i should run, ive had cars with hci before and just ran like 14 degrees but not sure what would be good for this setup. any help is greatly appreciated

 

[ssomustang50]

sounds about right where ur at 14-16,or try lower too,some motors like lower than higher. Just gotta test it out & see what it likes. Fuel pressure should be around 40 w/vac,32/33 w/vac off. Again can try alil more fuel around 43,see what it likes

 

[V8Demon]

What size pump and injectors are you running? Make sure they are enough. 30's with a big enough pump to feed them -- at least a 155 -- would be the minimum IMO.

 

[dsblk93gt]

What injectors and MAF?

 

[cobra20sc]

i just picked up an 89 lx hatch with a 347, it has jegs 2.02 heads trickflow stage 3 cam aeromotive fuel system. im playin with the car tryin to get it close to dialed in, anybody have any suggestions on what i should set my timing at and what fuel pressure i should run, ive had cars with hci before and just ran like 14 degrees but not sure what would be good for this setup. any help is greatly appreciated

To clarify, you mean 14 deg base timing with the jumper out. Computer adds 16deg of timing at 4Kish and above RPM with the jumper in so 30deg sounds about right. You can try 30-36 total timing on pump gas.

Fuel pressure, most of the injectors are rated to 38psig base fuel pressure with the vacuum reference disconnected. you can go higher to richen up WOT but beware, without disabling adaptive learning, the fuel trims may drive it lean at non-WOT conditions when its running in closed loop.

Good luck.
-Chris