Switching from 853's to 317s, worth it?
08-03-2012, 06:45 PM
#1
Switching from 853's to 317s, worth it? So im putting 317s on and was wondering how much ill pick up, if any? I say if any because im obviously going to drop my compression from stock to 9.5:1 and wasnt sure if that would offset the gain in airflow.
Im not turning up the boost (9-10psi) or adding more timing, its already at 18-19* . The car currently makes 600. the only tuning i plan on doing after the swap is if the AFR is off
Im not turning up the boost (9-10psi) or adding more timing, its already at 18-19* . The car currently makes 600. the only tuning i plan on doing after the swap is if the AFR is off
08-03-2012, 11:13 PM
#2
So im putting 317s on and was wondering how much ill pick up, if any? I say if any because im obviously going to drop my compression from stock to 9.5:1 and wasnt sure if that would offset the gain in airflow.
Im not turning up the boost (9-10psi) or adding more timing, its already at 18-19* . The car currently makes 600. the only tuning i plan on doing after the swap is if the AFR is off
Im not turning up the boost (9-10psi) or adding more timing, its already at 18-19* . The car currently makes 600. the only tuning i plan on doing after the swap is if the AFR is off
should gain. should make less boost. will be interesting to see. id do it. would not trust the stock head bolts. good luck. keep this thread updated.
08-03-2012, 11:28 PM
#3
there wont be less boost, ive got a controller on it so it will still make 9-10lbs. will do though, ill be back home in a week. ill post the results in my build thread and in here
i still want to hear some opinions though!
08-03-2012, 11:37 PM
#4
yeah im really curious what the gain will be and how the car will feel with less compression.
there wont be less boost, ive got a controller on it so it will still make 9-10lbs. will do though, ill be back home in a week. ill post the results in my build thread and in here
i still want to hear some opinions though!
there wont be less boost, ive got a controller on it so it will still make 9-10lbs. will do though, ill be back home in a week. ill post the results in my build thread and in here
i still want to hear some opinions though!
08-03-2012, 11:50 PM
#5
ok ok. seems like i remember you being blower. didnt read the sig. should make more power. if there is less restriction, i would think that the boost on the current controller setting would give a lower number.....so if you adjust it to go back up.....it should make more power. the slight loss in compression is not going to be that noticeable since that 78mm prob spools in no time. the rollers, and the track will tell!
its fully spooled by 3600-3700rpm so hopefully it doesnt take any longer.
i wish i wouldve had a chance to take it to the track before putting these on but pushing water kinda stopped that..
