playero_loko wrote:were you running any other big turbo with those cams?
did you have the cams installed after the big turbo?
how much better did it respond with the 264's?
can you explain to me why you're saying that stagger is something you wouldnt do... everything on the exhaust side is bigger than the intake side so i dont really see what bad could from that, at the same time; im by no means the subject matter expert. i know you've bilt a couple of these so let me know the 411.
i ran 264s with my gt2871r .64 planing on running the the same cams if i do the gt3076r. staggering is just harder to tune and it seems like the gains is not worth the effort.
the 264s kick in good at 4000 and pull al lthe way to 8 grand.
when i raced this sti, running 16 psi. he was stock. he would beat me off the line, but in 2nd i would pull up dead even with him we would both be in third at all most the same time, but as soon as boost kicked i nat 3500 and cams kicked in i was pulling away lieka mofo, and he had to shift into 4th while i was still in 3rd pulling away. so yes i love these cams
shift_SRDETuser wrote:
idaho -- not to jack your thread but I bought your old turbo and we finally put it all together and gave it a little run. It made 247 whp at 10 psi and then made 334 whp and 296 ft lbs of torque at 17 psi until the waste gate actuator crapped out on me. It would boost spike up to like 1.8 bar of boost-- the timing was retarded so it did not do any real damage but did you ever have any trouble with the wastegate on this? How much boost did you through at your s13 engine with the gt2871R?
I am running a apexi power fc and 740cc injectors.
appreciate it and by the way your numbers look great.
what boost controller are you using. basically my wastegate didnt do anything. i had it all controled with my avc-r no spikes or anything. but when i turned the controller off it held 10psi fine, and that was the reading on both the manual boost gauge and the avc-r.
i had it al lthe way up to 24psi on the dyno. your set up must be a little different then mine. cause i made 328 at 10 psi and 250 ft lbs of tq
grmreapr wrote:also have you thought about using a sr20ve head
i am watching mazworxs build on FA, but i dont think the gain will be worth the work.i will just polish the crap out of my head. wit ha turbo and running boost, when the casting is rough it causes scavaging, meaning the air catches the wall then flows over its self. and the more boost you run the more it catches on the walls and thhe hole it flows though i nthe center gets smaller, this is impossible to stop, but if the head is polished then at low bost levels it will flow as if there was no scavaging, but as you up boost is will only restrict as much as the low boost settings on stock head. therefor more air flow means more power.
DriftBoy07 wrote:This is gonna be sick...now Do it!!! lol
yes i got all my rings gapped, and pistons assembled, the flywheel and rotating mass is atthe machine shop to be balanced and resurfaced. then i cna assemble the bottem end. and i am going to start pollishing the head.
