Help me finish and estimate my power numbers

[CA18Fastback]

Hey everyone, As some of you already know, I have been working and saving up for parts for my 240 for about a year and a half. After getting a bad clip from Venus-Auto(check other posts if you missed that) and then finally getting a good motor, I still do not have my engine in or complete. Below is my list of what has been done to my engine(by previous owners) and all the parts I have added since this all began. Items with the asterisk(*) I have not gotten yet. I am also open to suggestions for these items. Also, please give me an estimate of what kind of power I will put down. I am also thinking of using a CA16 exhaust cam for the intake as I have stock cams for now, does this help at all?

Mods ListEngine Work• JE Forged Pistons(stock bore)• Polished, forged and shotpeened rods• New bearings• Balanced, polished and knife-edged crank• Cryo-treated block• Head ported and polished• Upgraded Valve Springs• Skyline 65mm Throttle Body• Stock cams(for now)• Intake manifold ported• 65 degree thermostat• New oil pump• New water pump• Tomei 1.2mm metal head gasket(not here yet)• New Headbolts• CA18/SR20 Hybrid Transmission• SPEC Stage 3 Clutch(6 puck)• 300zx Oil Filter• Butterflies removed from Intake Manifold• Resurfaced flywheelFuel Delivery• MSD 720cc Injectors• Custom Fuel Rail*• Stock Fuel Pressure Regulator*• Walbro 255lph Fuel Pump• 300zx Fuel filterIntake/Exhaust/Cooling• APEXi Dual Funnel Intake Filter• Custom 3” intake piping*• IHI RHC6 Turbocharger w/dual ball bearings and ceramic wheels• Custom tubular exhaust manifold• Custom 3” Downpipe*• Custom 2.5” intercooler piping*• GReddy Dual Dragger 3” exhaust• Intercooler*• HKS Super Sequential Blow-Off Valve• TIAL 38mm Wastegate with .8bar spring• Dual Electric Fans• SAMCO Custom Coolant HosesEngine Management• SDS EM4-F Standalone System*• GReddy Profec-B Spec II Boost Controller• GReddy Full Auto Turbo Timer• GReddy 52mm Boost Gauge

Thanks for any help, input, advice, ideas in advance!-Ian

[Wreckless]

With 720's and a built motor I would highly recommend an adj. fuel pressure regulator. I've never heard of a Greddy dragger, you sure you dont mean HKS?

I've yet to see a high hp car of any breed running ceramic compressor wheels. I'd dump the IHI idea and just get a T04/T3 hybrid in a similar size range, or a Garrett GT if you want a nice dual BB setup. Use the money you'll save on a good pair of cams & cam gears. Your dyno sheets will thank you.

Seriously, on the 9k+ rpm engine you will have dont sweat turbo lag so much, you will get used to driving around it and honestly its nice not having a turbo spooling all the freaking time when you're just driving around town.

I'm sorry I'm just learning about the CA18DET, so I cant really predict a power level for you. Turbo selection plays a big part of it either way.

[CA18Fastback]

Well, I'm shooting for about 350whp daily. So if I need an adjustable FPR I will get one.

It's a GReddy Dual Dragger. It's very hard to get in the states. Jspec and Phase2 sometimes have them. Most people get other exhausts since it costs about $600 shipped

the IHI turbo is amazing and will not be changed as I already have it. The turbo has been used on MR2s to support over 550hp. And it spools pretty quickly from what I have read/heard. Dont knock it til you've tried it **I found a fuel rail for $150 bucks that is made for the CA and 720cc injectors. is this a good deal? Also, what FPR should I go with? and an intercooler?***

All help appreciated!Thanks!-Ian

[USDM_OneVia]

Is that turbo a fast responding turbo? I read that the Profec B Spec 2 does not like quick responding turbo's.

Also... will the new engine management work with the Skyline throttle body.... i.e. its TPS?

Lookin good though

Joe

[slw240sx]

wow overkill for 350hp lol, those rods were also cryo treated, i think , have you had the head tested to make sure its not warped, that motor has a history of blowing out metal head gaskets! sammco hoses if you can assure they fit might still be just a bit , well over priced they are just silicone hoses molded to spec, you can prob get a way with somthing just as good but less $$

[gani]

basically port out the heads as big as posible (highest flow ect), polished, it has to have oversized valves, with heavy duty valve springs. Combustion chambers have to be CC'd. It has have a 1.2mm HKS metal head gasket, which combined with the wiseco forged pistons(40 thou over sized) ,will reduce the compression ratio to 7.5 - 1. The conrods to been heat treated and stress relieved an polished ect. So they are now good for upto around the 500hp mark. The crank has also to been heat treated ect. you can fully balance and blue-printed the motor and it will be good for around 25-30 psi. turbo should be upgraded to a HKS item maybe a 2835R ect with high mount manifold even a t28 will be good. Also 550cc injectors and a bosch fuel pump. Also adjustable cam gears with cams should be added and lastly a good standalone like an SDS, HALTECH or MOTEC. i think this sshould give you the stomping power you so eagerly need.

[CA19DET]

i think you'll be on the 400whp mark, you should look into the HKS2540R or for more power the GT-RS or GT2835R turbos from HKS.

an SDS or a complete E-Manage package should sort you out good with some 550's or 720's

oh and get some cams if you are doing springs and head work, get it all over and done with one time. may just take a lil longer to save moneya nd get them.

[CA18Fastback]

OK, guys. Maybe I didn't explain this very well. All the items on that list are in my posession or already done to the motor EXCEPT for the ones with an asterisk. Here is what is left to get:

-Fuel Rail (from a friend for $150, good deal??)

-FPR(adjustable or stok pressure?? where to get??)

-Piping(done at a local race shop)

-Intercooler(looking on ebay and forums, any ideas??)

-SDS EM4-F(from Dee once I get the damn cash together)

slw240sx (Jon)-you think it really is overkill? if so, what should i run daily? also, from everything i had heard from the previous owners, the head lifted on a stock head gasket, never blew a metal one.

USDM_OneVia (Joe)-Its a large turbo so it wont be terribly quick in response but it spools up pretty well from what I have read and heard about it.

Gani-I dont know if you even read my post but I ALREADY HAVE THE PARTS. I'm not looking to start from scratch or redo everything now.

CA19DET-what kind of cams do you recommend? i'm really low on cash so anything budget or junkyard would be great(ie CA16??)

thanks again-Ian

[CA19DET]

Quote »CA19DET-what kind of cams do you recommend? i'm really low on cash so anything budget or junkyard would be great(ie CA16??)[/quote]TOMEI PONCAM 256 w 8.8mm lift and adjustable gears, will give really good lowend and a little better mid-top rpms, really good choice here for 320-360hp

the CA16 cams i never tested mysself but have been given good rating on SXOC, something like 248* i think as apposed to the 240* stock i think. ~280-320hp range...

as far as other items you need:

you should invest in a Adjustable Fuel presure regulator for that kind of fuel and boost you will be using/running, a NISMO unit will fit your stock fuel rail as well as most top feed injectors (with slight mods to your current one)

Intercooler - booscontrollers on ebay has the best prices and quality sized bar and plate intercoolers i can find.

i think even a Forced Performance BIG28 may be the best turbo for your budget and needs, SR's make 320 hp at 22psi on 92 octane.... so with cams and good fuel and tuning maybe 300hp on a CA and this turbos limit is about 25psi...

good luck..

where you get that engine from?

[CA18Fastback]

are my stock cams totally killing my power potential? if so, what would be the best bang-for-the-buck cam that i could get? keep in mind that I would need to get the cams ASAP cuz this project is already taking longer than I expected and longer than parents like my car sitting around doing nothing

i will soon be getting a NISMO FPR for the stock rail. how do i know how far the rail needs to be drilled out for the 720cc injectors? the guy at the machine shop said he needs a measurement to do it. it looks to have some form of a chamfer(sp) for the o-ring.

i like those intercoolers on ebay so i might go with one of those.

i really dont want to change my turbo. the manifold fits it and gives great power with decent response.

thanks!-Ian

[eurosx]

As an alturnative to getting a turbo timer; use an alarm system with this capibility. I plan on using a Cliffard unit that has and adjustible turbo timer accesory. By friend has been using this on his turbo supra for about 4 years, and I plan to do the same on my next project when I back to the states.

[iliketocrash]

so i'm not sure i quite understand here... you say you're looking for about 350hp daily... but are you planning on turning everything up and goin nuts at the track occasionally? Maybe its just me, because if you're only going for 350hp then 720 injectors seem like overkill... along with many other parts you have. And on a side note, don't go crazy on porting out your intake manifold, which i think someone mentioned above, because if you do that then say "bye-bye" low end, and if you go to far then the whole set up will probably run like crap. Sorry i've i've taken anything the wrong way in my post but i just kinda skimmed over the whole thread because i'm impatient

[CA18Fastback]

I just said 350 daily cuz it was a good solid number but I will run more if my engine is comfortable doing so. When I am at the track I plan to go nuts. There are some spoiled boys out here with ram air trans ams who already want a piece

I found and intercooler I like but it has 3" in/outlets. Is that too big for IC piping? please let me know ASAP

Thanks!-Ian

[iliketocrash]

well... it'll probably yield better top end and over all power when dragging when used w/ a large turbo but its not really streetable.

[slw240sx]

Ian, from what i remember adam up here tellin me it was a metal head gasket on it when he over heated it and blew it . but i really cant remember, he was pushing like 270-300 some HP to the wheels on his set up with my turbo on it

[CA19DET]

i dont think a metal head gasket caused it to overheat? only if it wasnt torqued down properly. new OE head studs at least should be used...

[slw240sx]

know it had a bad water pump or thermostat, it over headed gasket popped and then he never really took another look at it just put it on the auction block

[CA18Fastback]

well it has a new water pump and a new thermostat:D so hopefully its all good now. I think later on I might get like a Yashio Factory manifold or something similar with a GT series. But for right now I'm just gonna go with my current set up.

Is 3in too big for IC piping? Or would 2.5in be better? I have found intercoolers with both size inlets and outlets

Thanks-Ian

[NeedCAforS13]

2.25 inlet, 2.5 outlet..good response:D thats what I'm using....granted your turbo>my turbo...

Sean

[slw240sx]

2.25 hot, 2.75 cold side. 2.75 pipe is impossible to find so it will goto 2.5 soon as i can afford the welding again

[drumma022]

Oh yea, I should have started a new post about this... The setup i have at low boost just wanted to drop off torque and HP at round 6500. This may have been due to the fact that it was at low boost, but at .7 bar I managed to pull out 243rwhp at 6500 rpm. I coudnt get an accurate reading for RPM, so the torque curve is partially calculated in. From what i can tell I was at 190 lb/ft at 6000 rpm. I am currently working out the bugs on the SDS system, but I am about 90% done. i hope to see higher boost in about a week or so.