Cast EFR 8374 IWG Large StreetPort FC3S Dyno 503rwhp @ 17.5psi
#1
Cast EFR 8374 IWG Large StreetPort FC3S Dyno 503rwhp @ 17.5psi
Adaptronic S4 PNP ECU
Flex Fuel ; E77
Large Pineapple StreetPort
3" exhaust with RB catback( no cat)
2.5" water to air intercooler system we built
ID1300/ID1700
Stock coils
503rwhp/355rwtq @ 17.5psi peak pressure.
SAE is 496rwhp FYI and it was 98 deg F in the dyno room today...
Flex Fuel ; E77
Large Pineapple StreetPort
3" exhaust with RB catback( no cat)
2.5" water to air intercooler system we built
ID1300/ID1700
Stock coils
503rwhp/355rwtq @ 17.5psi peak pressure.
SAE is 496rwhp FYI and it was 98 deg F in the dyno room today...
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#11
Exhaust Manifold Leak
I had this once when I had fuel pressure drop. it said pingping and cracked at same place at oil filter pedestral.
there are people running 30 psi and more on non studded engine on pump and water inj. so it makes me believe knock, or abnormal combustion (as in too much chamber pressure too early in the cycle) should must be the main effect, an not engine torque.
I heared some theories one could also cut the ribs in the rotor housing nearest to the dowel location. this should prevent the pressure wave during pre iginition not be able to be transferred to the dowel boss. the rotor housing liner will bend somewhat but this is said not be a problem as its flexible.
I didnt try above technique myself yet.
there are people running 30 psi and more on non studded engine on pump and water inj. so it makes me believe knock, or abnormal combustion (as in too much chamber pressure too early in the cycle) should must be the main effect, an not engine torque.
I heared some theories one could also cut the ribs in the rotor housing nearest to the dowel location. this should prevent the pressure wave during pre iginition not be able to be transferred to the dowel boss. the rotor housing liner will bend somewhat but this is said not be a problem as its flexible.
I didnt try above technique myself yet.
#12
Let's get silly...
iTrader: (7)
Yeah this was not meant as any kind of reflection on the tune/fuel/turbo system at all. When i had the block built 10 years ago it was not built for that kind of power it had the early 2nd gen rear plate.
It was due for a refresh anyway. I got 10 years of hard track and street use out of it then decided to push it. I figured better to get it set up and mostly tuned before the refresh in case something happens. It's good to go now...
Turblown/Turbosource did a great job with it. Other than the IWG on the EFR turbos being SOMETIMES susceptible to boost creep everything worked perfectly. Tune was great, car pulls like a mule.
It was due for a refresh anyway. I got 10 years of hard track and street use out of it then decided to push it. I figured better to get it set up and mostly tuned before the refresh in case something happens. It's good to go now...
Turblown/Turbosource did a great job with it. Other than the IWG on the EFR turbos being SOMETIMES susceptible to boost creep everything worked perfectly. Tune was great, car pulls like a mule.
#13
I had this once when I had fuel pressure drop. it said pingping and cracked at same place at oil filter pedestral.
there are people running 30 psi and more on non studded engine on pump and water inj. so it makes me believe knock, or abnormal combustion (as in too much chamber pressure too early in the cycle) should must be the main effect, an not engine torque.
I heared some theories one could also cut the ribs in the rotor housing nearest to the dowel location. this should prevent the pressure wave during pre iginition not be able to be transferred to the dowel boss. the rotor housing liner will bend somewhat but this is said not be a problem as its flexible.
I didnt try above technique myself yet.
there are people running 30 psi and more on non studded engine on pump and water inj. so it makes me believe knock, or abnormal combustion (as in too much chamber pressure too early in the cycle) should must be the main effect, an not engine torque.
I heared some theories one could also cut the ribs in the rotor housing nearest to the dowel location. this should prevent the pressure wave during pre iginition not be able to be transferred to the dowel boss. the rotor housing liner will bend somewhat but this is said not be a problem as its flexible.
I didnt try above technique myself yet.
I have cracked these irons before, and literally just put the big S5 rear on with our 10mm stud kit and without changing anything it did not happen again. I also cracked my personal S4 iron at 33psi on the 9180, and nothing was wrong inside. This was on OEM 3 piece apex seals too. I also know what the housings, and rotors etc look like when they move around or knock each other etc.
I plan on getting to the bottom of it once and for all on my S4 block( I am putting an S4 rear iron back on, and will just use our stud kit and a tranny brace).
#19
I had a straight torque brace from the alternator bracket to the strut tower bar as well as Mazda comp engine/trans/rear mounts.
It always bent/cracked my center iron where the passenger side motor mount bolts on.
It would still occasionally break the rear iron at the upper dowel with detonation (damage present elsewhere in engine).
I removed the torque brace on my last engine to save the center iron and it broke the front iron at the upper dowel.
No damage/wear inside the engine- looked good to go.
FD has the right idea mounting the engine by the rear plate so the drivetrain torque can't unduly twist the loosely held together engine stack anymore than just transferring torque to the e-shaft already does.
It always bent/cracked my center iron where the passenger side motor mount bolts on.
It would still occasionally break the rear iron at the upper dowel with detonation (damage present elsewhere in engine).
I removed the torque brace on my last engine to save the center iron and it broke the front iron at the upper dowel.
No damage/wear inside the engine- looked good to go.
FD has the right idea mounting the engine by the rear plate so the drivetrain torque can't unduly twist the loosely held together engine stack anymore than just transferring torque to the e-shaft already does.