Building a SR? Few questions

[iandrew89]

alright guys here is my dilemia. I am trying to build a SR20 for about 350-425 hp. I havent decided exactly how much yet. I'm new to the whole engine internals and top end bottom thing. I know the difference between them and all. I want to replace as many parts to freshen the motor up as well as boost the performance. Here is what I have so far in parts. What I should do as machine work or other parts I have no idea so help me out please guys.

Cosworth 87mm x 1.1mm Head Gasket
HKS Stage 2 264 Intake Cam
HKS Stage 2 272 Exhaust Cam
Tomei Rocker Arm Stoppers
ARP Headstuds
SR20DET Timing Kit
Brian Crower Valve Spring Kit
Brian Crower Intake and Exhaust Valves
HKS Adjustable Cam Gear Set
Crower Titanium Valve Retainers Kit
Garrett GT2871R Turbo
CP Pistons 87mm
ACL Race Main Bearings
ACL Race Main Rod Bearings
ARP Engine Main Studs
Eagle Rods

Supporting mods:
HKS 1000cc Top Feed Injectors
Greddy Intake Manifold
Nismo Fuel Pressure Regulator
Greddy Top Feed Fuel Rail
Bosch Inline Fuel Pump
HKS FMIC Kit
HKS Downpipe
HKS HighPower Exhaust
Megan Racing Turbo Manifold
AEM EMS Series 2
Mishimoto Fan Electric Fan Kit
Mishimoto Radiator
ISIS High Pressure Power Steering Line
HKS SSQV BOV kit
AEM Inline Wideband UEGO
OEM Nissan S13 Front Timing Cover and Oil Pump Assemly
Greddy High Capacity Oil Pan
Sard Oil Catch Can

[DuckyD]

Whats your question?

I don't see any bearings listed. There are a lot of varying opinions on bearings, I personally went with ACL Race Bearings. And because I have Mazworx in my backyard, I had the GTi-R bearings done and pretty happy about it.
I see you have 87mm pistons and 87mm headgasket. Technically, you should have got an 88mm headgasket but what you have will work.
I'm assuming that you're going to get a 28761R or something similar? In my opinion, the DiF re-clocking flanges that Enjuku sells are 100x better than the CircuitSports, because the DiF have the o-rings which eliminates the need for gaskets that add up over time. You'll want lines as well.

As far as machine shops go, I would ask around, ask around some more, and visit the machine shop before dropping off your parts. A bad machine shop can ruin your investment (ask many guys here).

[iandrew89]

I totally Forgot about bearings. will add those to list. Turbo is gt2871r. So I should get a 88mm headgasket then? None of this is bought yet. Planning before I drop all my money. And what are you meaning reclocking flanges? and as far as machine shops its not really the place so to speak but more of what I should have them do?

[PyR0NiAk]

Your budget is a very important part to be leaving out here...

[iandrew89]

Well budget is kind of where ever I want to set it at. With everything I have listed already I think I had it added up to almost $9000. The money is not the issue as the whole entire car is apart anyway and I am in no rush to have it put back together as long as when its done it is done right. I have an Infiniti J30 for daily driving so I am not worried about down time. I have no idea what a machine shop is going to charge to do anything at all as I've never had to get done at a machine shop. This is my first serious build so I plan on doing it right.

Back to the topic at hand... What else do I need besides bearings? Like in the machine work? I know the will have to bore the block to put in the bigger pistons but what else like anything else in bottom end or top end?

[JDizzle]

Either HKS or Tomei cams would be a better choice. I've got a buddy with BC cams that were wayyyy off. He's got a DOHC V6 motor and a couple of the cams were off 11 and 12 degrees.

[iandrew89]

So should I dump all the Brian crower products n switch to tomei or hks?

[PyR0NiAk]

The bc springs and retainers are fine, but I'm with JDizzle on the Cams. Dump the BCs in favor of something like Tomei, HKS, or JWT. If you're going this in depth with your setup, why not do a staggered setup for your cams? Something like a 264/272 setup would most likely benefit you nicely. If you want to save some money, go for the ISIS Rocker Arm Stoppers over the Tomei ones. I'd also go with Eagle Rods over the Brian Crower ones. Enjuku sells a package deal for CP Pistons and Eagle Rods. Are you wanting a super responsive car or are you wanting something that makes a lot of power? The 87mm pistons tells me you're wanting to go big, which makes me wonder why you're going with the 2871R. That turbo will limit you to the 350-400whp range. (Maybe check out the GT30 series turbos.) I recommend AEM EMS over NisTune for the simple fact almost any speed shop can tune with it and it will coincide with AEM Gauges. (You're going to want a wideband and boost gauge at the very least.) NisTune is going to be one of those things you're probably going to have to learn yourself... I also wouldn't go with an MR Exhaust manifold. Either Extrude Hone your stock one or try to find a good deal on a Tomei Expreme. Once again, these are all personal opinions. This is your motor and your money. You can do what you like and in the end, the only person who has to be satisfied is yourself.

[iandrew89]

Thanks pyro that's the kind of response I'm looking for. I actually have a whole entire defi cr advanced gauge set-up. I just didn't include those in this list. I wasn't 100% sure when I built this list so a standalone like aem ems is a better option then the nistune. and actually I'm glad u brought the pistons up. I would rather have a more responsive then big power. yes I want power too but I want response as a priority so what would be a better option for me. and ya after looking at my turbo I think I will need a bigger one or should I just change my pistons to something other then 87mm n keep my turbo. None of this is purchased I want to have everything I need laid out before I start purchasing. I do have the Sr tho.

[iandrew89]

Ok changes have been made to the list up top. Still need to know what I should have machine shop do? Port and Polish the heads? Hot Tank the bare block? What about the crank? Also with a responsive engine should I change the pistons to something else? Leave the turbo or upgrade to gt30 series? A more responsive car is more important to me due to the fact that I won't be unleashing the power very often and would like response more.

[PyR0NiAk]

Increased bore and raised compression means you're going to spool a little faster. So the 87mm will definitely help your responsiveness. The only other flaw I see in your setup, is I don't think the 555s will keep up... My friend is running out of fuel at 380whp, and he's running 740ccs. He also avoids going more than 80% Duty Cycle, so he COULD reach 400, but he'd be nearly maxing out his injectors. I really need to know your power goals to help you out with your fuel and turbo setup, though.

EDIT: Just saw this. You switched to AEM EMS. This means you won't need the Z32 MAF anymore. You can run a MAP sensor with it.

[iandrew89]

So what maf would I use stock? N power goals honestly i started off only wanting 350 but now prolly would like to see 425. and thank you for helping me out so much. I'm so new to all this engine internal and the supporting mods.

[PyR0NiAk]

You won't need ANY maf with a MAP setup. With a 425 goal, you might want to change your entire fuel setup and go with a 1000cc topfeed setup. This is also the point where your walbro could be struggling, so an inline bosch pump WITH the walbro in tank might be a good option here. When it comes to fuel, it's better to have too much instead of not enough. Having not enough means you start melting pistons. And helping you isn't a problem. I enjoy discussing different setups so it's a good way to pass the time.

[iandrew89]

Ok so no maf thats good to know. Ok now your in a whole new world to me. Iv'e heard about topfeed setups and all but never really read anything about them. What all is required to do that besides the injectors? New fuel rail? So still get the walbro in addition to an inline bosch pump. Wish I had as much knoweldge on this stuff as you do. I love this stuff just havent got into this much detail yet.

[PyR0NiAk]

A lot of time reading will help you learn most of it. You need a Manifold, a Rail, and the injectors + harness.

http://www.frsport.com/HKS-1402-RA002-F ... 14119.html

The greddy top feed fuel rail will fit the Greddy Ver. 2 Intake manifold. Both are sold on 240sxmotoring.com I would make a couple phone calls to make sure the HKS Injectors will fit the Greddy Rail, but I really wouldn't expect them not to.

[iandrew89]

is this the bosch inline fuel pump you are talking about?

http://www.amazon.com/Bosch-044-Univers ... B001CCVFBS

so with the inline pump, walboro pump, greddy fuel rail, greddy manifold, and 1000cc injectors with harness will cover the fuel setup. Now turbo should I go with the gt30 series and should I do with wastegate or should i go with an internal wastegate style or external wastegate?

Edit: What about a FPR do I need one?

[PyR0NiAk]

Yes, I would check and see if a nico sponsor carries it though. An email to a nico sponsor almost always guarantees a better deal. Your turbo choice all comes down to what number you want on the dyno and how fast you want to get there. I'm getting ready to fly so I will try and make a. More detailed post tonight regarding turbo choices. You DEFINITELY need an FPR considering the stock one can't even handle the walbro half the time.

[iandrew89]

Ok so I added all the fuel system to the list. Only thing is turbo now. Id like to see 425 and I like a quick response on the spool up. I looked at the gt30 series on frsport.com but there was so many options I got lost.

[DuckyD]

or external wastegate?

Edit: What about a FPR do I need one?

If your goal is 425hp, you would definately need an external gate.
You talked about quick response, so now you're getting into twin scroll technology.
http://www.full-race.com/catalog/produc ... ts_id=1748
Under 400hp, you can do GT2871R with support mods (mainly, manifolds and cams) and have a car that totally rocks out for 1/2 the cost of a twin scroll setup. Look at codyace's numbers, I bet that car is a blast to drive.

As far as FPR, industry standard is pretty much the Aeromotive A1000-6.

That being said, I am glad that you are adding up this build but I have seen a lot of these on NICOClub, and it always end up being some kid with dreams scribbled in crayon. Just saying.

[PyR0NiAk]

Look at codyace's numbers, I bet that car is a blast to drive.

Only problem... That was on an uncorrected dyno... Even the title of the image says so.

[DuckyD]

Look at codyace's numbers, I bet that car is a blast to drive.

Only problem... That was on an uncorrected dyno... Even the title of the image says so.

+/- 10%
Either way, it would be a fun car to drive and not going to blow a budget like a Full Race setup would.

[PyR0NiAk]

Agreed, but this guy said there's no such thing as a budget with this build. I have to agree with you on the whole most of these don't become reality, or even start to, but if nothing else, the kid learned something. (Hopefully.)

[iandrew89]

As far as FPR, industry standard is pretty much the Aeromotive A1000-6.

That being said, I am glad that you are adding up this build but I have seen a lot of these on NICOClub, and it always end up being some kid with dreams scribbled in crayon. Just saying.

Ok I will check into that FPR thank you. Yes I know a lot of people plan a build and really they are only just dreaming. I am not super rich and no I'm not going to go buy all this tomorrow and pay someone to slap it on. I get on average about 2500 a month that I can spend on whatever I want. Some has gone into savings, some is furnishing my condo I just bought. This part right here is only for the build of the engine. I have already bought a bunch of stuff for this car.

Silvia Front End
Rota P45r's(cheap and needed for 5 lug quick and cheap)
5 lug swap ichiba fronts oem z32 rears
Z32 30mm front calipers and rear calipers
ss brake lines
Z32 Brembo Rotors
SR20DET OEM Gasket Set(thought I was only putting stock motor in at first)
Stance GR+ Pro Coilovers
SPL Rear control Arms
SPL Inner and outer tie rods
SPL Toe Rods
SR20DET Redtop Motor Set
Z32 E-brake lines
Z32 Shoes
Projet Mu Brake Pads all around for Z32
SS Clutch Line
Excedy Stage 2 Clutch kit(need to sell)
SR20 Radiator

I'm sure there is other stuff I'm missing. I'm not at home with all my lists. Yes this build will take time but I have a 94 Infiniti J30 for daily driving so my car can be down for a few months while I gather money and parts.

[iandrew89]

Also yes I have learned alot from this and hope to continue learning. While there is no budget technically it will still take some time to do. Back to turbos. Would the GT30 series be sufficient enough for this build. I don't like the full race setup because the a/c is not compatible with the twin scroll manifold and I would like to keep my a/c. If I have to not put out as much power and stick with the gt28 that's fine. Maybe down the road I'll want to upgrade more and not care about the a/c but for now I'd like to keep it.

[PyR0NiAk]

You can sacrifice a little response and go with a top mount setup. This means you'll need a topmount exhaust manifold. A t3 flanged turbo, and a custom downpipe. You'll also need turbo lines long enough for a topmount.