Need input on my set-up

For the RWD SR20DET cars! Sponsored by Wiring Specialties.
SRdave240
Posts: 276
Joined: Fri Apr 11, 2003 8:16 pm

Post

I am on the waiting list for a blacktop SR20DET at Heavythrottle. Realistically, I will probably never upgrade the turbo. I would like to run 10 PSI on a daily basis and 15 for the track. I need to know if what I am purchasing below is a good choice given my goals. Also, are HeavyThrottle's prices good - I have done a littlw searching and they sure seem to be.

GReddy V-spec FMICHT hotpipe with GReddy typeS BOV3" HT down pipe3" stainless testpipe3" stainless Apexi N1 catback - w/silencerPerma-cool 14" electric fan w/ thermostatSpec clutch (should i get stage2 or 3??)Fidanza 9lb flywheel - should I just skip this cause I am going over budget. DNA manual boost controler ($95)?? or Profec A ($329)?? again budget constraints.

Any input would be great


GraySilvia
Posts: 275
Joined: Sat Dec 14, 2002 2:09 pm
Car: auto-x, drag racing, beer

Post

My vote says profec B (or just stay with a manual controller, then you'll save enough for a flywheel), it's a lot better than the profec A IMHO. That looks like a good setup. Don't forget the upgraded fuel pump.

SRdave240
Posts: 276
Joined: Fri Apr 11, 2003 8:16 pm

Post

Yes, I already have the walbro 255lph pump. I still need an upgraded fuel filter though.

I will have to do a little research on the Profec B. I was told by several sources to get the profec A cause it is cheaper and does everything I would need.

Still can't decide btwn the stage 2 and stqage 3

GraySilvia
Posts: 275
Joined: Sat Dec 14, 2002 2:09 pm
Car: auto-x, drag racing, beer

Post

i think you have them reversed.....the profec A is the expensive one that's way too fuzzy logic for its own good, and the B is the cheaper one that works all too well. Unless i'm confused....

SRdave240
Posts: 276
Joined: Fri Apr 11, 2003 8:16 pm

Post

Nope, you are right. It's late and I can't think straight. I will probably just do the manual controller so that i can get the flywheel.

is a 9lb flywheel and a Spec stage 3 clutch too much for a daily driver?

GraySilvia
Posts: 275
Joined: Sat Dec 14, 2002 2:09 pm
Car: auto-x, drag racing, beer

Post

Nah, I doubt it. I have a JUN 11lb flywheel and my buddy has the fidanza that's 9lbs. and while his clutch does require a little more finesse than mine (ACT Street + strip), it's still doable.

Silvia Tuner 1
Posts: 120
Joined: Wed Mar 12, 2003 1:16 pm
Car: tuning

Post

you should be careful boosting that high (15 psi) on the stock turbo. if you blow it then you'll have to get another one anyway, save a little extra money and I'm sure you can get a cheap t28 from an s14 or s15 motor. that'll be good up to about 18 psi

Silvia240sxNiSmO
Posts: 10
Joined: Tue Apr 08, 2003 12:23 pm
Car: imports

Post

how much extra is the t28 from an s14 or s15? about $2000?

GraySilvia
Posts: 275
Joined: Sat Dec 14, 2002 2:09 pm
Car: auto-x, drag racing, beer

Post

the T28 from the S14?!?! Sheesh, you can get a good used one on ebay for ~$400, or, buy a brand NEW S15 turbo from Phase2 for $865 :) The S15 turbo can get you 300rwhp with supporting mods.

SRdave240
Posts: 276
Joined: Fri Apr 11, 2003 8:16 pm

Post

With the set-up I have outlined above, what would be the limiting factor if I were to upgrade to a larger turbo? Also, How much whp or psi can the stock injectors take?

I have been told by a couple of people that the V-spec FMIC is overkill. They say I should just get a Starion.

thnx

GraySilvia
Posts: 275
Joined: Sat Dec 14, 2002 2:09 pm
Car: auto-x, drag racing, beer

Post

the first problem you'll run into is fuel system. About 260 rwhp or ~15psi is about all you can do on the stock fuel system, at stock fuel pressure. If you get bigger injectors, then you'll need some way to control them, I.E. AFC, or custom tuned ECU. Next, the MAF, i'm told, overruns around 280hp, so then it'll be time for a Z32 or similar MAF. That's why most people do injectors and MAF at the same time.

The V-spec is a little overkill for a mostly stock setup, but, by god, you'll never have to upgrade it.

SRdave240
Posts: 276
Joined: Fri Apr 11, 2003 8:16 pm

Post

that is exactly what I am trying to avoid - buying stuff and then buying more stuff when I want more boost. I already have a Walbro 250lph pump and a high flow filter so getting the fuel to the injectors isn't a problem.

GraySilvia
Posts: 275
Joined: Sat Dec 14, 2002 2:09 pm
Car: auto-x, drag racing, beer

Post

yep, it sure tends to snowball when you want to start going faster. I got away with 18psi on an S14 turbo after i bought a nismo fuel pressure regulator and turned up the stock pressure about 4 psi. Yes, it's ghetto, and wasteful, but it worked :)

User avatar
hokiruu
Posts: 741
Joined: Sat Dec 07, 2002 1:34 pm
Car: 2012 INFINITI M37X Platinum Graphite

'95 240sx/s14 SR20DET (in 2000) SOLD
Location: Northern CA

Post

You are on a similar track as me. Don't worry too much about upgrading the turbo now. To do a turbo upgrade properly and safely you are looking at about $3500 for a ball bearing turbo, injectors, fuel management, and metal head gasket, RAS, and valvesprings. IMO, the TurboXS dual stage manual boost controller is pretty cool. you can use it with a low and high boost settings (yes-cabin adjustable!), its simple, reliable, and easy, and itsa little less than the price of even the truly great value Profec B. Then again, electronic boost controllers are pretty damn cool. However, many people who have tried both prefer a good manual boost controller.

Cyberkreig
Posts: 3048
Joined: Sun Sep 01, 2002 4:40 pm
Car: 1993 Nissan 240SX SR
Contact:

Post

SRdave240 wrote:is a 9lb flywheel and a Spec stage 3 clutch too much for a daily driver?


I have the Spec 3 in my car.. it isnt full out race, but I would NEVER want to deal with that thing on a daily basis.

SRdave240
Posts: 276
Joined: Fri Apr 11, 2003 8:16 pm

Post

Yes, I have decided to go with the stage II. I also decided I will not do a turbo upgrade and I will stick with the stock flywheel (resurface it of course).

My biggest dilema now is what IC do I get. I don't think I need the GReddy V SPL cause I'm not upgrading the turbo. But I do want to get 13-15psi out of the T25. Researching IC is a PITA. I can';t find specs anywhere. What are my IC options given my new goals...

Starion?Spearco?HPI?


Return to “SR20DET Forum (rear-drive)”