quest for 300HP-sr20

[twotirefryerwa]

so tell me what you guys think. this is what i am thinking now for parts.

stock sr20 block. s15 BB T28, FMIC starion style, 2 1/2 IC piping, greddyS bov, 3" manrel exhaust. 4g63 injectors in a aftermarket rail, nismo FPR, z32/ walbro fuel pump, JWT ecu, techtom mdm100 koyo rad, clutch (your input here), nismo motor mounts and the monkey magic transmission mount.

i'm thinking i should be good with that setup. only thing i question is what clutch, and are the 4g63 injectors(46lbr's i think)good enough?

Dustin

[Movingviolation240]

You'll need bigger injectors and a bigger intercooler to do it IMHO. You really can skip out on the MDM 100 and spend that extra money on some proper SR sidefeed injectors. Then you don't have to buy the fuel rail, FPR, or resistors. I also didn't see a MAF on that list, you'll need one of those. And to get 300 out of an S15 turbo I'd imagine a turbo manifold and greddy 02 dump would be a good investment.

For a clutch I have a SPEC Stage III and love it. That seems to be the clutch of choice down here in FL for high HP SR's.

PaulOrlando, FL

[solaris22]

Some decent injectors are always good, I personally think the starion style FMIC is fine for 300hp. A guy here with a stock log style manifold dynoed high 300hp with a gt2835, but for wanting 300 out of an S15 you might want more flow so upgrading might be a good idea. I think the stock MAF is good to 350hp, I could be mistaken. But if your getting a JWT ECU might as well get it tuned for a Z32. For clutchs, act, spec, nismo, exedy. I'm sure they're all capable of handeling 300hp.

[FTRS14.5]

Get a 3'' Downpipe and 3'' Test pipe as well.

[twotirefryerwa]

3" dowpipe and test pipe are a given. I will either get a cobra or z32 maf. heard the z32 maf is good for more power. i think the stock maf tops out and miscounts at 10+ psi. more likely i will get z32 maf. i'm not going to skimp out on anything, everything i buy will be quality, so if i have to temporarily lower my HP goal, thats how it's gotta be. mdm-100 is a necessity IMO. i really want to stay with a s15 turbo, so a manifold upgrade and greddy dump were already in the plan. very possible that a bigger intercooler will be also, but bar and plate intercooler's are spendy. especially for the one i want. i will probably be beating the **** outta my clutch, so the cheapest one shipped to my door wins also looking at the 550 nismo injectors....maybe overkill. 440 gtir? not sure about those handling 300 HPthanks for your input

Dustin

[Movingviolation240]

No such thing as too much fuel injector.... that's your insurance against a boost spike.

Paul

[AceInhole]

My friend recently pulled over 300 rwhp on his blacktop S13 SR with a GTiR T28.

His mods:Blitz FMIC Pulsar GTi-R turbo HKS wastegate 480CC injectors z32 MAF 3" turbo back to n1 dual (including 3" CAT!!) S-afc for fuel management

[twotirefryerwa]

originally i was planning the JWT 4 bar setup. more fuel pressure to the same size injectors, pulsewidth to the injectors modified. this supposedly allows better idle quality of the smaller injectors due to pulsewidth modification. i guess this would work maybe? i guess you can make a small injector work like a big one, by more fuel pressure. maybe more fuel atomization at higher pressure that what it was intended for? you can modify the signal to the big injector, but if you drop fuel pressure to mimic a small injector, you lose the fuel stream. ?? just my theory. i don't mind lumpy idle, i had some JWT s4's. those things kick ***. brump, brump, brump. solid mounts and the steering wheel shakes 1/4 inch! in this setup i am planning, stock cams are planned. i want to still be able to pass emmisions. WA emissions are fairly lax. i can make a 10:1 FWD sr20 pass with flying colors. no EGR, no AIV, no charcoal canister. header exhaust CAI. anyways, i'm rambling *slap* how much power can each different injector put out? i don't even imagine wanting to eclipse the 300 WHP mark. overkill is good to an extent here. i would like to maintain at least 15% headroom.

BTW, i also have a intercooler spray system goin on. i think it's kinda funny the 240 has a low water light for the wiper reservoir, with a switch blank for my arm switch right by it. i managed to finaggle a 4.5 GPH submersible water pump 12v DC. it fit in the stock sentra 1 gallon tank(!)fine. thats gotta be good in at least reliability terms. i actually just do it to be really cool....ya know, so other people think i know what the hell i am doing. how big is the stock 240sx reservoir?

Dustin

[twotirefryerwa]

His mods:Blitz FMIC Pulsar GTi-R turbo HKS wastegate 480CC injectors z32 MAF 3" turbo back to n1 dual (including 3" CAT!!) S-afc for fuel management

HKS wastegate? so this is not on the stock manifold here. what size was the wastegate? external, right? what manifold. bardon my newbie-ness, but what are the better manifold design's? are they all equal length, or does that really matter. for what it's worth, i want the turbo underneath the manifold.

480cc? i take it these are not stock nissan injectors. does he happen to know how much headroom? what fuel PSI?

z32 MAFS-headroom #'s

Safc??? wow. that's the unit that tells the stock ecu dirty lies via the MAFS, right? how long has this guy been running the setup?

new to the RWD platform. first car was a 240sx, but gettin parts was unheard of. GTi-r is a FWD platform....the turbo fits up fine?nice!

what kinda of times does he see??

Dustin

[Onizuka]

I belive HKS makes a T25/28 actuator for the stock internal wastegate, thats probably what hes talking about.

It would be way easier just to get a new S15 T28 than a used GTiR T28.

[Tai Mai Shu]

Z13 SR MAF is good for a whooping 270rwhp! w00t! No but serioulsy unless your running some hot hot cams IE 272 11.5 lift a Larger A/R (IE the Pulsar turbo) isnt worth running, your better off with the GTRS turbos.

[twotirefryerwa]

hot hot cams IE 272 11.5 lift a Larger A/R (IE the Pulsar turbo) isnt worth running, your better off with the GTRS turbos.

gtrs turbo? is that skyline t28? r34? is that unit ball bearing? also, the z32 maf is bigger ID than the s13, right?

Dustin

[Siddhartha]

disco potato was a gtrs turbo i believe, yes z32 is bigger

[twotirefryerwa]

well reason for s15 turbo was price. i don't plan on spending 1200 for a turbo right away. later on down the line yes.