Theoretical Final Power?

Post by **PROJECTRB240SX** » Tue Oct 07, 2003 10:49 am

MY ENGINE BUILD UP PLAN:

RB20DET BASE ENGINE:BLOCK:2.3L STROKER UPGRADE 82MM ALUMINUM FORGED PISTONS 71.7MM CRO-MOLY RODS BALANCED AND SHOT-PEEND RB25 CRANKBALANCE AND BLUEPRINTN1 OIL PUMPNEW WATER PUMPUNIQUE AUTOSPORTS 5.7 KG BILLET FLYWHEEL

HEAD:TOMEI SOLID CAM UPGRADE TOMEI SOLID LIFTER CAM (10.25 LIFT, 270 DEGREE DURATION) TOMEI SOLID LIFTERS TOMEI VALVE GUIDES3 ANGLE VALVE JOBPORT AND POLISH

EXHAUST, INDUCTION, AND FUEL:UNIQUE AUTOSPORTS INTAKE MAIFOLD & FUEL RAILCUSTOM FMICSTAINLESS STEEL INTAKE PIPINGZ32 MAF555CC INJECTORSCUSTOM EQUAL-LENGTH MANIFOLDT3/T4 .82 A/R INTERNAL WASTEGATE (14-20PSI)3" EXHAUST TURBO-BACK

WELL I WANT TO SEE WHAT YOU ALL THINK THIS SETUP WOULD MAKE. ALSO I WOULD LIKE TO KNOW WHAT CHANGES YOU THINK I SHOULD MAKE TO THIS SETUP.

Post by **wcbjr** » Tue Oct 07, 2003 10:49 am

Fuel pump?Belts?Headgasket?Clutch?I would go external on the wastegate. Can you even find an internal wastegate with that size a/r?

Post by **PROJECTRB240SX** » Tue Oct 07, 2003 10:49 am

FUEL PUMP IS ALREADY A WALBOROBELTS ARE GOING TO STAY STOCK, EXCEPT TIMING WHICH IS GOING TO BE GREDDYHEADGASKET IS A CUSTOM COPPER 1.2MMCLUTCH WILL BE A Z32 2-DISK 400 OR 550 FT-POUND STILL HAVE TO DECIDETRANNY UPGRADES ARE GOING TO BE A COMPLETE REBUILD WITH Z32 UPGRADED INTERNALS

INTERNAL WASTEGATE YES I CAN, I ALREADY HAVE ONE LINED UP.OK NOW EXPLAIN TO ME WHAT THE PERFORMANCE DIFFERENCE IS BETWEEN THE STYLES (INTERNAL AND EXTERNAL) I SEE NO PERFORMANCE LOSS STAYING INTERNAL.

Post by **Nathan** » Tue Oct 07, 2003 10:49 am

418hp the first time you tune it on the dyno.

Post by **PROJECTRB240SX** » Tue Oct 07, 2003 10:49 am

418 HUH, I AM HOPING FOR 400WHP. OHH I FORGOT I AM GOING TO USE A E-MANAGE AND PROFEC-E01.

Post by **Nathan** » Tue Oct 07, 2003 10:49 am

Well I'll be curious to see what it ends up...do I get a prize if I'm closest? that was if you push 20psi, I think it might be somewhere around thereish.

Post by **Bryson** » Tue Oct 07, 2003 10:49 am

Hey Music I got my emanage from UPS today so whatever I end up doing engine wise I will hit you up. I forgot to email you like I was gonna do I'll email you soon.

Post by **cyris3d** » Tue Oct 07, 2003 10:49 am

what are you gonna do for a base map with the emanage?

Post by **Bryson** » Tue Oct 07, 2003 10:49 am

the emanage uses your ECU's settings at the base map.

you ADD or SUBTRACT from whatever the computer ueses stock, so it comes set for base map

Post by **PROJECTRB240SX** » Tue Oct 07, 2003 10:49 am

You can download a base map if I'm not mistaken from greddy. If not I'll have one of the local race shops get a base map from the stock ecu.

Post by **kevy8up** » Tue Oct 07, 2003 10:49 am

what do the stock Rb engines come with as far as bov or wastegate.....or nothing. Should i get something better just in case?

Post by **PROJECTRB240SX** » Tue Oct 07, 2003 10:49 am

there is no bov its a recirculator valve and wastegate is internal set at .7bar roughly.

Post by **hannibal** » Tue Oct 07, 2003 10:49 am

Music, What kinda prices are you looking at? The block and head work sounds expensive!

Jay

Post by **PROJECTRB240SX** » Tue Oct 07, 2003 10:49 am

BLOCK WORK I GET DONE FOR CHEAP, I'M LOOKING AT ABOUT $600 FOR ALL BLOCK WORK THEN ABOUT $1500 FOR RODS AND PISTONS. HEAD WORK IS GOING TO BE JUST A VALVE JOB AND PORT/POLISH SO ABOUT $600-800. THE CAM SET IS GOING TO BE ROUGHLY $2000+. I'M GOING WITH RB26 OIL AND WATER PUMP AND THATS ONLY $300. IN THE END THE POWER PLANT IS GOING TO BE ABOUT $5-6K

Post by **Project240** » Tue Oct 07, 2003 10:49 am

I would think you'd be able to go higher than that on the boost, if you were looking for maximum power. With good tuning and more than 20 psi I'd guess you'd be closer to 500HP.

Post by **PROJECTRB240SX** » Tue Oct 07, 2003 10:49 am

I'M LOOKING FOR 400WHP THOUGH, SO THAT OR ANYTHING HIGHER AND I'D BE HAPPY.

Post by **illspace** » Tue Oct 07, 2003 10:49 am

Id get a bigger turbo, hks series....

and yes, external wastegate will net you more power, ( i dont have an explaination, but i have seen the dyno graphs to prove it)

Post by **WDRacing** » Tue Oct 07, 2003 10:49 am

Yeah, for the money your WASTING on the block, you might as well WASTE some more and get a GT series turbine. Like a GT30R or similar. I would atleast make sure I was getting a full BB turbo.

Honestly though, If I was only looking for 400 at the wheels, I wouldn't even touch the short block. A good 1.2mm HG like you said and a really good port/polish on the head. That with a set of 256 or 264 dur cams, the right turbo and Fuel/Ignition tuning will net you huge results. There is alot of power to be made in the RB20 head. I was running 248 dur cams (stock 240), a custom head job, 2mm HG, HKS mani, TO4E, External wastegate(internal is garbage) set to 28 psi and put down 498 at the wheels. Good enough to take a 3000lb R32 down the 1/4 in 11.9

Your going with a ton of overkill bro. I'd be looking at 700whp if I had that much invested.

The RB20 stock piston/rod combo will hold a ton of pressure, if you can eliminate detonation she'll run forever. I went through 5 or 6 RB20's trying different things. Mostly cause I get them for 200 bucks, and its fun to blow them up.

One thing I would add to your list, as a must have item, is a MSD or similar Knock Sensor. That thing saved me atleast 45 times, it will really help during your initial test and tune sessions as well.

Shoot me an email or whatever if you wanna toss around some idea's. If it's one thing I know, its RB20's. [email protected]

Later OnWD

Post by **apex_7** » Tue Oct 07, 2003 10:49 am

I'm doing a 63-trim T3/T4 w/ a water-cooled option and a tial external wastegate soon. I'm hoping to make at least 350rwhp at around 22psi. I'd like to run mid-to-high 12s. Right now I'm running high 13s on the stock turbo w/ a FMIC, AFC and full exhaust. The car currently weighs 1660 pounds when I'm not in it. I feel that 12s are obtainable. Is their anything I need besides a clutch when boosting 22psi that I need to be aware of?

Post by **PROJECTRB240SX** » Tue Oct 07, 2003 10:49 am

HOW THE HELL DID YOU GET THE CAR DOWN TO 1660? DO YOU MEAN 2660?

Post by **wcbjr** » Tue Oct 07, 2003 10:49 am

Hrmm, 1660.

No A/C, no spare/jack, no interior, no passenger seat, low fuel, light wheels. I think you may get a bit above 2000.

Then comes bumper beams, hood, glass, dash. May get under 2000.

Post by **JeffTN** » Tue Oct 07, 2003 10:49 am

This is an awesome thread! Would any of these specifics pertain to the 25 also, or is it totally different?

Post by **PROJECTRB240SX** » Tue Oct 07, 2003 10:49 am

THEY ARE ESSENTIALLY THE SAME MOTOR EXCEPT .5 MORE LITERS.

Post by **Bryson** » Tue Oct 07, 2003 10:49 am

and that .5 liter is due to the stroke, yes? Important to point out.

Post by **PROJECTRB240SX** » Tue Oct 07, 2003 10:49 am

STROKE AND MASSIVE BORE. IT HAS A 7MM BIGGER BORE. AND ALSO HIGHER COMPRESSION WHICH I'M GOING TO USE IN MY MOTOR. SO WD DO YOU THINK I SHOULD GO FOR MORE POWER WITH THAT SETUP? I ALREADY HAVE MOST OF THE PARTS SO I'M SET ON MY DECISION BUT I WAS GOING TO BE CONSERVATIVE WITH MY EXPECTATIONS.

Post by **WDRacing** » Tue Oct 07, 2003 10:49 am

YES, more power would be easy...I'll be in Tucson bro. I can help out with any RB questions.

WD

Post by **PROJECTRB240SX** » Tue Oct 07, 2003 10:49 am

WELL THIS IS GOING TO BE AN ONGOING PROJECT SO YOUR INSIGHT WILL BE GREATLY APPRECIATED.

Post by **apex_7** » Tue Oct 07, 2003 10:49 am

Yeah, J/k. 2660. mah bad.

Post by **PROJECTRB240SX** » Tue Oct 07, 2003 10:49 am

OK I WAS GOING TO SAY "DAMN ARE YOU RUNNING AROUND WITHOUT BODY PANELS?", LOL.

Theoretical Final Power?

Theoretical Final Power?

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