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Originally posted by cream420
Surprised it doesn't choke itself out on fuel, those injectors are about twice as big as you need.-- ---just so happend when i installed the fuel pressure regulator the set screw was all the way out- so when started the car without fuckin with safc- it ran- reved ok only till about 3000rpm- so i pulled away some fuel with the afc and upped the fuel pressure- only 5 psi but for the time being its all the time i had for tuning- so i will continue to up the fuel and take away more from the afc
It would rev above 3,000 rpm because there was that much fuel.
Originally posted by cream420
Did you have fun indexing the PT cams to work with our head.---- ----to tell you the truth those cams actually were in the car when i bought it from some lady in rockwall-- the numbers are for a 2.4L crysler-- same as in the caravan-- the cam gears were flipped the other way round---
The reason it sounds funny to me is that the 2.4L have the intake cam on the from of the engine and exhaust in the rear. The cam magnet attaches to the intake cam on the 2.4L and the exhaust cam on our 2.0L. So you’d have to be using the exhaust as the intake and vise versa or the cams were modified.. With th ecam gears flipped around the timing belt will most likely ride off the edge of the gear, there a good 1/8-1/4” difference in offset between the gears. I know a guy who received a set of 2.4L Gears and installed them, the timing belt didn’t ride all the way on the gears, so he had to take them off.
Originally posted by cream420
You got titanium retainers and didn't upgrade your valve springs?--- ----i bought the head from a friend of mine- this was the setup his backup head-- he doesnt remember if the springs were replaced or not-- i will check into this cause this will limits how high i spin the motor.
I assume you have upgraded springs since I doubt the stock springs would compress enough for the cams you tried to run.
Originally posted by cream420
Fuel pressure you want to stay above 30psi or you can adversely effect the spray pattern of the injectors.---- ---- this i understand- i do believe that i picked up a set of injectors that were a bit too large-- but bob norwood said i should be able to take away enough fuel from the safc to get it to run right-- if i continue to have a problem i will take them back--- they were flowed at motech at 45lbs@50psi Running 12:1 compression you should have the ability to retard ignition timing if needed. An ignition amp with retard module would do the trick.--- --- the msd dis-2 has timing retard built in-- havnt played with this feature yet cause im running 110 octane and not detonating-- im sure it will come in handy when i start adding more 93 octane
Hmm.. if they were flowed tested at 50psi, most injectors are flow tested at 43.5psi, so they are probably 42lb/hr injectors by the usual standard.
Originally posted by cream420
So tell me why raising your fuel pressure would cause you to overheat?---- --- the way i wrote that made it sound like that-- my appologies-- i was going to up the fuel pressure, but do to the fact my car liked to overheat so quickly at idle i was not able to tune the car, or up the fuel pressure. i have an aluminum c&r radiator with a spal lightweight highflow fan on the way and should take care of the overheating issue- i hope. it should be here on friday. If you truly are running this set up you have too much fuel. You could tune stock injectors to run this set up. I'd say 24 or 26 lb/hr injectors would do the trick, especially with the small cams.-- ----i dont have the time to play around with you folks- not a liar-- this is my setup! --
The set up just sounds a little odd, I don’t mean to insult you. The 2.4L cams especially is what’s throwing me off.
Originally posted by cream420
--i have a set of custom ground crower drag cams with a 532 lift but need to do some research to make sure they wont hit the tops of the pistons--- they were installed on my car before going high compression but we couldnt get the car to start- we figured out that the dowls needed to be redrilled- we'll see what happens when i get the cams back from my friend. to add
That’s just going to depend on the design of the pistons. I know the JE 12.5:1 have deeper and wider valve reliefs cut in to them. Don’t know the design of the Wiscos. Were they Neon grind cams? Crower has the blanks for our 420A, so I’m surprised that there would be any dowl problems at all.
Originally posted by cream420
stock injectors are 235cc if im not mistaken so they are already about 24lbs.
235cc is about 22lb/hr
Originally posted by cream420
for the power id like to make everyone tells me they are too small-- i really needed about a 40lbs injector but norwood didnt have any at the time.
Are you planning on making around 300hp, NA?
Originally posted by cream420
-- one thing cool about running larger injectors is when you take away fuel from the safc it actually tricks the stock computer into thinking that fuel cut is actually after 7000 rpm- so i should technically be able to spin the motor higher than stock limits when taking away fuel from the safc 2.
Where did you get this information? There are plenty of guys here running big injectors, turbo and pulling back fuel with the S-AFC, and they still hit the rev limit at 7k rpm. The only thing we've seen is that the ECU can advance timing a few degrees by leaning out the S-AFC.
I’d love to see some picture of your car and engine bay.
Exile Racing Technologies: http://www.exileracing.com
una salus victus
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