well, time has come upon me and my researching days. ive finally decided to turbo the auto sr20de rr. idk if that makes you guys happy or sad. ive been looking at other people's set ups for awhile now, and about everyone(set up) i see is different. there isnt any specific 'kits' as you may call it for it.

personally, i know that im going to have to get the cobra maf, but yet im wondering about how to do this set up. i am planning on running maybe 10psi tops?? idk if thats able to work on the stock injectors/block or not. i think maybe 230whp is a good goal to get for pump gas and nothin too extensive. for some reason i have in my mind that i want the 'disco potato' turbo.

in otherwords, shoot at me what i should be looking into to buy for this custom set-up. im planning on buyin parts for this project rather soon. thanks in advance, as ill check in here often.

suggestions...


+1 for turbo.
make your own kit.
dont buy cheap ebay shit.
dont get a disco potato unless your willing to spend around 1100 for just the turbo. if you find it for cheaper its not a real disco potato. i would suggest this:
http://www.courtesyparts.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=CP&Product_Code=SR20DET-TC

a bit cheaper, plus its made for that motor, so you dont have to guess on sizing.

if you are looking to go even cheaper than that, go to a junkyard, snatch up a used t3 from a volvo or something, clean it out, replace the journal bearings, make sure theres no housing or center section damage, and get new turbine and compressor wheels. then lube it up and put it back together. you can even use an external wastegate with whatever turbo you choose, youll just need to factor it in when getting a manifold and downpipe.

as far as the rest of the parts...

manifold - this is a good one http://www.jgycustoms.com/serg20/exhaustmanifold.htm
otherwise id suggest getting a small log style manifold to optimize boost response.

get a custom 2.5" or 3" downpipe. make sure and figure out what your going to do with your EGR system.

injectors(i dont remember if you have top mount or side mount. i think you have side mount though) - id recommend some stock silvia injectors. they are 370cc and will support you until around 275 or so whp. also a walbro 255lph fuel pump is suggested and if you pay more than 100$ for one you got ripped off.

for an intercooler, dont get a front mount bigger than about 6 inches high and no thicker than 2.75 inches. you dont need any bigger, and a bigger one will only hurt turbo lag, throttle response, and block your radiator more than is necessary. then find some custom charge piping. oh btw you shouldnt need a cobra MAF for low 200hp range at the wheels. but if you want one, youll need an ECU reflash to make use of the signal. jim wolf technology can do this for you, plus they sell the cobra MAF with pigtail.

id suggest a common brand of BOV thats not too expensive. this ones not bad either - http://www.jgstools.com/turbo/index2.html


plus figure out your engine management. for that power level, a reflash isnt necessarily a must, you can get away with using a good A/F controller and a boost controller if you know how to tune with those.

oh and id suggest a 3" exhaust. turbos will act as a silencer, and the bigger the exhaust the better. theres no such thing as too big. its not going to be that easy to find, but itll be worth it.

good luck, any more q's just ask.

thanks for that information. that really helps a lot, i mean a lot. i know that jgy's turbo system for my car is 3200, talk about pricey. i knew about the whole too big intercooler will cause turbo lag and 2.5/3' exhaust is necessary. i actually emailed them for that information.

i was wondering about the injectors, and that seems to answer my question. i was thinking about going z31 tt injectors, as they are 420cc. what ever one will run me better for my money will be a plus, like if the 420cc's are 10 bucks more each, i think thats worth it since the power potential is more available unless that will make me run unnessecarily rich which i dont think will with a a/f tune. yes the fuel pump was another question, whic was answered.

ive heard about the whole disco potato thing, and it was just a famous turbo. gave me the idea about them. let just say my friend's friend has a turbo altima that is running that turbo. that really got me into boost. best part though is that it showed that automatics also have potential to me in 4 cyclinders. i was thinking about a gtir turbo, or one from a silvia, but i diddnt want the hks dual ball bearing turbo replacement, as thats pretty expensive.

i dont know what the limit to boost is for my sr20de. im guessing about 16psi before i have to rebuild the bottom end and pistons as well. that would be good information for me.

actually your first part that will break under boost is probably your headgasket. but that can be fixed, i believe HKS sells one, as well as cometic
http://www.cometic.com/sportcompact.aspx

you should try and get your injectors cleaned and blueprinted. just so you dont have one that has weak spray and blows your engine up under boost.

oh if you want some brand new injectors for a very good price, heres where i got my 650ccs
http://www.deatschwerks.com/main.htm

wow, that is a very good price. no need for blueprinting the injectors, since they will be brand spankin new.

now this has been bugging me as well, since you got me thinking about it. i have no idea what im going to do with my whole egr system. i know what it does, yet im not too sure on what to do with it. i was thinking abiout just blocking it off completly, but then i couldnt pass emissions at all even if i tried. im going to be keeping the stock catback piping to bolt on just for emissions testing, since i dont know anyone that lives up there by green bay or anything.

the bov really isnt a big question, but i understand its function and everything, but i dont see how most of the bovs that i was looking at dont ususally go back into the intake right after the maf. i saw one that did that, and it was about 300 bucks....

well youd have to get either a downpipe with an EGR bung welded on, or have someone do it for you. im not sure how strict the emissions laws are in wisconsin but im guessing they check to see if all your emissions equipment under the hood are there and work correctly, but the thing is if you keep the boost low you may be able to pass a tailpipe test even without an EGR. but im not 100% sure of that. if you do plan on removing it, you can find blockoff plates on ebay for like no more than 5 bucks. or else cut one yourself out of 1/2" mild steel and drill bolt holes in it.

and the BOV question...yeah alot of the big names sell ones that cant be recirculated because so many people are dumb and want loud ones not knowing why. but the one that i posted from JGS does, as well as ones like Greddy's type S, and im sure some other companies make em. if all else fails, get a junkyard 1st gen eclipse turbo blowoff valve. they are basically a blueprint for every aftermarket BOV out there. they are built to recirc and have a very very good design. plus you can usually find a short pipe with the BOV flange already on it that you can just hook up in your piping.

i believe it goes like this, well where i test for emissions, if its a newer car with obd(brain fart for the moment) II, they dont check under the hood, just look for extra gauges. they see the gauges, they'll check. otherwise, they diddnt check under the hood. they diddnt even do a tailpipe test, just plugged into the ecu/computer or w/e for the emissions as it tells how much is flowing, due to the o2 sensors or something. i guess that place where the 6 cd changer will be a great place to put the turbo timer and boost controller. meeh, ill just take in the emissions a month early, before everything is installed onto the car. that should last me about a year.

now to find someone with a credit card to order some parts tomorro :)

it should be the fuel pump and the injectors
btw thanks for that link on new injectors again sideways

np. keep us informed. your soon to have the fastest sentra on AF award

yea, hopefully. just got to find someone with a credit card that i know personally if you know what i mean. that shouldnt be too hard.

fastest sentra on af, maybe, not on b15sentra.net

i was reading somewhere that it would be useful to install the injectors and fuel pump before the actual turbo so that if those give me problems, then it would be easier to figure out what it is.

i've found this out like today, and it was makin me think, since my calcualtions for about how much this will cost total, and how much a sr20det swap from a pulsar or a bluebird would be about the same, yet id have more power doing it with my current RR block due to its better tq curve.

btw, have any good sites for a intercoolers which are good quality, and not 300 bucks a piece for them?

well, 'cliff notes'

is it better to install my new fuel pump and the injectors while i dont have the turbo installed, as i was told to install them and drive to see if there is a problem with any of them.

got any sites for intercoolers, like the injectors, as i dont want an ebay intercooler. i think this would do just fine though
http://www.horsepowerfreaks.com/sale/Yonaka_Motorsports/Intercoolers/Intercoolers the 275 one.

and im looking for a site for a cheap universal walbro fuel pump, as all im seeing is 130+ for these things...

thanks, and ill host pics after a couple things arrive here.

welps, ive got an update. i've gotten a great deal on parts this week from a fellow boosting altima guy that i trust. i got his 3month used intercooler and his brand spankin new blow off valve for 150. ill have pics up soon. i have come to realize that i will need to remove the factory fan for the place of the gtir manifold and the turbo, so i should be gettin his 3 month used fan as well for another 70 bucks. i've come to realize that most of my kit wont be brand spankin new, just the turbo, intercooler piping, and the fuel injectors for now.

out of curiousity, about how much does it run to get the transmission cyro treated since ive heard of the tranny dieing after about 250whp.

SR20's SUCK

yeah they do

hmm. this is interesting coming from fugiot, as he is bragging about his sr20'd se-r in his profile.....sheesh, whats the sentra board coming to now? all i wanted as a piece of info, not bull shit....i guess fugiot has been drinking again....

hes just got them blue balls, he'll come around eventually