cheap HP?

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docktercolin
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Car: 1992 nisan 240

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Ok. the other day i was making a list of all the parts and prices of all the stuff i would need to upgrade to get about 325 hp. Was going to get jim wolf ecu upgrade, injectors, Z32 maf, and a gt2871r. Money is kinda tight right now so i started thinking (sometimes not a good idea for me. ) what if i just bought the turbo and ran the boost till the injectors reached about 85-90 percent and then injected meth/ water for another 5-7 lbs. of boost? I already have a plx r-500 and a apex neo so i do have basic tuning tools to help this work. Other mods include, walbro 255 pump, cleaned balanced and tested injectors, sard fpr, Blitz fmic, Bliz sbc, megan exhaust manifold, megan turbo outlet, tanabe down pipe, catco 3" cat, and tanabe full 3" exhaust. The ecu, injector, maf deal would be $2500- 3000. the turbo and meth injection would be about $1600. Time bomb waiting to happen? ha ha thats the way i like it. Blow it up then i have to rebuild bigger and better!


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supreamS14
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Car: 96 240sx S13-blacktop Sr20deT

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docktercolin wrote: cheap HP....... Money is kinda tight right now.........thats the way i like it. Blow it up then i have to rebuild bigger and better.........
Im not sure what your saying. If you think the stock 370cc injectors can flow more than 250whp, well they wont. Even injecting meth/ water wont make the injectors flow more. That stuff is a boost cooler!

Save up! You will thank your self in the long run! Good luck!!!

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docktercolin
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That was only a short term solution for a few more lbs. of boost while everything else is comming together. I am definitely going to do it the right way. the meth/water injection from my understanding raises the octane from the methanol and cools cylinder temps with the water. I know the stock 370's hit the wall around 250 hp. Just thought that getting the octane up to around 100 would allow me to raise the boost a couple of pounds. Was thinking about setting up boost controler at 11 to 14 lbs. Where ever the injectors hit their peak, then set the scramble for what ever i can get with higher octane of the methanol. That way i dont have to worry about going through five gallons of the methanol a day and go out and beat up on mustangs every once and awhile.

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docktercolin
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Hey nice quotes! I know its always cheaper to do it right the first time. When you feel a little boost you want MORE! NOW!

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supreamS14
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docktercolin wrote:Hey nice quotes! I know its always cheaper to do it right the first time. When you feel a little boost you want MORE! NOW!


Take it from me, I KNOW! My sr has a gt28r, It felt really good @ 10psi. I ran some 100octane race gas at the 1/4 mile strip, bumped up the fuel pressure 4psi and the boost up to 14 psi. I made at least 16 runs. Well on the 17th run or so my boost spiked to 16psi and melted and cracked a piston running 13.0 @114mph

@ 10psi I was running 13.9 @14psi I was running 13.0 And it felt good!

Im guessing @ 14-16psi I was making around 250whp

My last words would be to ask a local tuner that dyno tunes cars and get their thought's on that set up.

idahotuner
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get some deatsch werk injectors for about 340 dollars. cant go wrong whne you have extra fuel.

vanquish2
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supreamS14 wrote:

Take it from me, I KNOW! My sr has a gt28r, It felt really good @ 10psi. I ran some 100octane race gas at the 1/4 mile strip, bumped up the fuel pressure 4psi and the boost up to 14 psi. I made at least 16 runs. Well on the 17th run or so my boost spiked to 16psi and melted and cracked a piston running 13.0 @114mph

@ 10psi I was running 13.9 @14psi I was running 13.0 And it felt good!

Im guessing @ 14-16psi I was making around 250whp

My last words would be to ask a local tuner that dyno tunes cars and get their thought's on that set up.
You mean to tell me that you were trapping 114 in the 1/4 with a gt28r??? At 14psi??? and only 250whp? What were your 60' times?

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docktercolin
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Yeah, if we only had some tuners here in Nashvegas! None to speak of!! Dyno, a wide band and apex Neo. Thats it. Friends go to alabama for hondata or Louisville for power fc. Started buying all my parts almost a year and a half ago. Since then one of the mags did a multiple power page with a red top. They had almost the identical parts as i and made 247 at the wheels at 11 lbs. With the T-25. Got a couple of questions for all of ya! 1. If i get the t-28 and a set of injectors can i control the bigger injectors with the NEO? #2. can i run a z32 maf with the NEO? #3. should i forget even tryin and just save 3k and do it all at once?

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docktercolin
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Have seen good and bad about the the deatsch injectors? good experiences so far?

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supreamS14
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vanquish2 wrote:You mean to tell me that you were trapping 114 in the 1/4 with a gt28r??? At 14psi??? and only 250whp? What were your 60' times?
14psi spiking 16psi. That was my fastest time and my motor poped right at the end and I was running sunoco 100 octane race gas. I was guessing my whp and I cant find my time slip but I think it was around 2.0-2.2 60'. I just ripped threw my whole room trying to find my time slip. Its around somewhere.

Emperor_Tha
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[QUOTE/] 1. If i get the t-28 and a set of injectors can i control the bigger injectors with the NEO? #2. can i run a z32 maf with the NEO? #3. should i forget even tryin and just save 3k and do it all at once?[/QUOTE]Safc neo can tune up to 150% of it's original injector size. Ex. Stock 370, max injector 550cc. The hardest part is tuning for regular driving. Since there was only 2 throttle point it was hard tuning with the meth/water (walmart .94 cent washer fluid)

I'm currently running a z32 maf. 2 in 6 out. It makes the car run slightly richer cuz the out voltage is .250 higher than the stock in voltage.

U can tune for a bigger turbo but u won't be making as much power compare to chip, rom, standalone becuz safc cant do advance timing

vanquish2
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supreamS14 wrote:
14psi spiking 16psi. That was my fastest time and my motor poped right at the end and I was running sunoco 100 octane race gas. I was guessing my whp and I cant find my time slip but I think it was around 2.0-2.2 60'. I just ripped threw my whole room trying to find my time slip. Its around somewhere.
That trap speed is good for high elevens if you could hook.....but your time doesn't match you speed.....it would have had to have been like a 2.4 60'

I would like to see that slip. Trap speeds that high in the top end of a gt28r are quite impressive.

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kentuckyslider
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Docktercolin, you need to get with Chris at Performance Garage in Smyrna(615)220-4560. He dynoed my car and it came out with the numbers in my sig. I am going to Nashville Speedway Aug. 29th to run the 1/8th mile. See you there???

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kentuckyslider
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As for trap speeds and times......... I had a 1.75 60' on MT ET streets when I ran the 11.7@117 but I had a 3.91 J30 R&P now I have a 4.36 skyline rear diff. I haven't ran the 1/4 with the new R&P but I had a 1.56 60' in the 1/8th with the same size wrinkle walls but a slower MPH and ran a 7.51@91. (91 vs 93mph in the 1/8th). The 4.36 and drag slicks make the car come out harder with much more midrange power but you lose mph from my experience. I will run the 1/4 when it cools down and we will see how it goes. I expect a 11.5 with a slower mph.

Question: My wastegate is maxed out at 21psi and I want to run water/methanol injection and take my GT2871R up to 24-25psi just for the track. My tuner said I need a new wastegate actuator to get any more boost for the methanol. ANY SUGGESTIONS????????

vanquish2
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kentuckyslider wrote:As for trap speeds and times......... I had a 1.75 60' on MT ET streets when I ran the 11.7@117 but I had a 3.91 J30 R&P now I have a 4.36 skyline rear diff. I haven't ran the 1/4 with the new R&P but I had a 1.56 60' in the 1/8th with the same size wrinkle walls but a slower MPH and ran a 7.51@91. (91 vs 93mph in the 1/8th). The 4.36 and drag slicks make the car come out harder with much more midrange power but you lose mph from my experience. I will run the 1/4 when it cools down and we will see how it goes. I expect a 11.5 with a slower mph.

Question: My wastegate is maxed out at 21psi and I want to run water/methanol injection and take my GT2871R up to 24-25psi just for the track. My tuner said I need a new wastegate actuator to get any more boost for the methanol. ANY SUGGESTIONS????????
You can see my sig and your numbers line up with what I've seen as well. Good job by the way! Which 2871 do you have? Who tuned your car? I currently run 25-26psi on my 2871 .86 on torco accelerator 107ish octane. When I ran my 11.8 I was at 338whp and 21psi on the same turbo. No meth yet....just a truboost to control the good stuff

TonyStarks29
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I bought the Same Turbo for my car and im waiting on my Nismo Injectors with a GT28 turbo.... aint no such thing as cheap i wanted to go use venom injectors but EVERYONE told me its gonna be a waste of time/money and i did some research and THERE RIGHT the 740cc Nismo Injectors is where you wanna go i also got a Z32 maf and a Air/Fuel Controler gonna get my ECU UPgraded when i put my DAMN Sr20 Back in the Vert...

Emperor_Tha
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kentuckyslider wrote:As for trap speeds and times......... I had a 1.75 60' on MT ET streets when I ran the 11.7@117 but I had a 3.91 J30 R&P now I have a 4.36 skyline rear diff. I haven't ran the 1/4 with the new R&P but I had a 1.56 60' in the 1/8th with the same size wrinkle walls but a slower MPH and ran a 7.51@91. (91 vs 93mph in the 1/8th). The 4.36 and drag slicks make the car come out harder with much more midrange power but you lose mph from my experience. I will run the 1/4 when it cools down and we will see how it goes. I expect a 11.5 with a slower mph.

Question: My wastegate is maxed out at 21psi and I want to run water/methanol injection and take my GT2871R up to 24-25psi just for the track. My tuner said I need a new wastegate actuator to get any more boost for the methanol. ANY SUGGESTIONS????????
Are u running a lunch control? What are u launching at? My best 60' was a 1.9 on a 6k launch on j30 LSD and neogen tires. I avg 2.0

For a wastegate. I would recommend getting a stock cast iron manifold, weld a external wastegate and make a custom screamer pipe

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kentuckyslider
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No launch control. I run 26x8.5x15 Mt ET Drags at 16psi and I launch at 7000rpm+ every time. It would turn the ET streets over a couple of times before it would bite but the wrinkle walls are all bite. I have torn 2nd gear out and I did a ka/sr transmission swap. You need the 235/60/15 ET streets and a 6500-7000 rpm launch will get you in the 1.7 60' times all day with the J30 rear diff.

I like the MT ET drag radials better than wrinkle walls for several reasons........ You won't break as much, you can race street class, and you can drive them to the track and not have to swap your wheels when you get there. The 238/60/15 MT drag radials fit your stock wheels and are all you need unless you have over 500whp. IMO

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kentuckyslider
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I have the .64 ar GT2871. I want to get 24-25psi out of mine with methanol but my wastegate is maxed out. What do you do to get 25psi out of yours?

Emperor_Tha
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kentuckyslider wrote:I have the .64 ar GT2871. I want to get 24-25psi out of mine with methanol but my wastegate is maxed out. What do you do to get 25psi out of yours?
Only way is to get a external wastegate welded on. Less back pressure and no boost creep

I'm running 215/45/17. I'm going to try launch at 6500 since I have no wheel spin at launch at 6k

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docktercolin
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Hey KYslider. will be there. Did you make it to the super lap battle? Was sweet, a little friggin hot but SWEET! Was pissed i couldn't bring the S13. nico made a good show looked like about 25 cars. What rims do you have? that is a sweet look on a white car. been tryin to figure out what would do my car justice. Gold car, prob do some Enki rpf1's in flat black or 5zingen fn01's in the same. Any suggestions?

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kentuckyslider
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I would get the rpf1's for sure. I have sportmax 006 in 18x8.5fr and 18x9.5 rear with sumitumo HTR Z3's in 265/35/18's in back with 225/40's in the front.

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docktercolin
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whats the difference between the venom and nismo injectors? Besides I'd always trust true nismo stuff. Whats the achievable hp deference between 550's and 740's. 320-400?

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docktercolin
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Those are some sick times! What are you doin for suspension? now that i know the car i'll look you up at the race. I'll try to bring mine out. Clutch not totaly disengaging for some reason? Started to pull entire motor and transmission tonight.

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docktercolin
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did you do a five lug to get those offsets?

TonyStarks29
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i dont know exatily how much you can push with 550cc but it'll be deffentily UNDER 390... with 740 you'll DEFFENILY get 400+ (with supporting mods)

and if you look up prices on

740 and 550 there maybe a 70 dollar difference... so its DEFFENTLY worth it for 740 you want as much fuel to flow for that turbo

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kentuckyslider
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No, I have 4 lug hubs. I don't think you can get the rpf1's bigger than 16x7 for 4x114.3? http://www.edgeracing.com/wheels/enkei_wheel/

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docktercolin
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That seems to be the case with every wheel. sucks. Really want to do the z32 caliper upgrade. dont think there is any way to get around the five lug conversion. Not that i really want to, but it just adds to the whole price. Guess its time the honda goes. Ha!

91 CRX SI for sale! For the price of some rims, tires, and a big turbo!Shes been lonley since i got the nissan anyways.

You gonna be runnin or showin next weekend?

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docktercolin
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740's it is. every thing i have been doing thus far is to get to that 400 mark. main goal is to keep it streetable with the ability to crank it up on occasion. 325 normal, 400 on race day. Motor is coming back out tomarrow. looking right now for a part # for ARP studs and a decent price on a head gasket. Also gonna do timimg chain, water pump and oil cooler.

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kentuckyslider
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I have z32 front and 4 lug hubs Get on Ebay and look up sportbrake out of Texas. They have 30mm Brembo rotors drilled off 5 lug blanks to fit your 4 lug hubs. I got axis pads, drilled and slotted rotors, and conv. lines for $229.00 + shipping. I also got matching oem rear rotors and pads. The rears are nice for the e-brake if your drifting but they weigh 7lbs. more each and I didn't want them for drag racing purposes. Also I got my calipers from Oriely's for $120 ea and they gave me the $100 core back on my stock S13 calipers!!!

Runnin mid 7's in the 1/8th if it's not to hot. I don't show, I go!


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