turbodremz

iTrader: (18)

i have a chance to get a t25 turbo thats in good condition, just wondering if it would be enough for a dd na-t set up on the conservative side everything stock tuned with an afc-II or neo?! seems kinda small to me, but its not costing me much. I need some input...i would search, but the tequila in my system is kind of impairing my ability to click on the search button..just need some honest answers and opinions

sphy1005

iTrader: (3)

you might as well fork up a little more cash and get a bigger turbo. You'll have really low end torque but not much up top with that turbo. if i'm not mistaken is that the turbo that comes with the stock 2gen eclipse. plus you'll have to custom a flange for the manifold.

Luke_in_SD

haha tiquilla does amazing things

turbodremz

iTrader: (18)

i can get it for $100...i think the custom flancg is ok

and its off a stock sr20det...

the eclipse is a 14g or 16g..close to the t25, but not exact//

5sp_jzz30

iTrader: (2)

i wouldnt do it. i have a built sr20 that im doing 2 t25 s13 turbo on it. the t25 would not flow enough air to supply the motor. turbos are not just about the psi rating they can push it is also about the amount of air they can more at a certain psi level. at t25 would run out of steam very quickly. i chose 2 t25 for my sr20 because i flow tested the cylinder head. figured out how much the engine is capable of flowing at my psi rating and rpm range. 2 t25 is actually a perfect match. the sr20 cylinder head stock flows about 210cfm at full lift. after i ported it my head flowed about 270cfm. i didnt get too much flow up top but amazing gains at low lifts. thats where it counts the most because your motor spends more time at partial then full lift. the t25 stock flow

on a 6 cylinder engine the t25 would run out of cfm to feed the engine at about 4500rpm. at that point the car will lose power. you can try to turn up the boost but its only safe to about 14-15psi. after that it will be very inefficient and probably cause the turbo to crap out. on a sr20det the t25 is not even great after 5500. at

this is the numbers i got with my sr20 highport cylinder head:

CCFM(corrected cubic feet per minute)
Lift stock ported
-------- ------- -------
0.0500 47.6 36.1
0.1000 85.2 68.6
0.1500 96.6 110.1
0.2000 114.4 163.0
0.2500 131.7 210.9
0.3000 141.0 233.3
0.3500 167.3 249.3
0.4000 202.6 261.2
0.4500 205.1 265.6
0.5000 207.7 267.7
0.5500 207.6 268.0

ill try to post a t25 compressor map to show you what i mean.

a better choice would be a ct26 off a mk3 supra. it came off a 3000cc 6cyl engine and it is good to about 14psi. that should be more then enough for you. just buy a 2jzge manifold, make a ct26 inlet flange, weld it on, and youre good to go. the turbo outlet and downpipe would be pretty easy to fabricate also. with that turbo you can take some mk3 supra turbo 440cc injectors, resistor box, and install it in your car. then tune with an safc.

the eclipse DSM t25 is actualy a lot smaller then a garrett version used on an sr20's. the dsm version still has t25 flanges but the housings are a lot smaller and the A/R ratios are different. it can still push 15psi but i dont know about actual cfm flow. i wouldnt do a dsm t25 because just like anything else dsm it is cursed.

mitsubishi should just stick to making industrial equipment and military-related goods. thats all they are good for. except for the evo8&9 i wouldnt buy a DSM ever. you cannot own a DSM if you dont know how to work on cars. well you can.....you just cant afford to own it

turbodremz

iTrader: (18)

well i would probably only run about 10-12 psi daily seeing as i'm keeping my engine completely stock, except for fuel, injectors pump, etc..i just need to know it a t25 would be safe for a DD for starters...

5sp_jzz30

iTrader: (2)

is the turbo still good or blown. you can get a better deal then that. i bought a blown one that wasnt even that bad for $75 and a perfect one with the manifold, outlet, all lines, inlets, and outlets all for 120.

the difference between dsm t25 and sr20 t25 is huge. the sr20 version looks like a giant compared to the DSM one.

turbodremz

iTrader: (18)

its from an SR from a friend of mine that i used to drift with.. its in great condition, no shaft play at all...but because the 2JZ is a new thing to me, i had to ask..

my car is only for day to day use..no plans for big hp cause i'm keeping th stock auto. a custom flange is no problem, i'm a fabricator welder...

i just need to know if a t25 from an s14/s15 silvia will handle a 2jz@10-12psi for daily use

5sp_jzz30

iTrader: (2)

s14 had a ball-bearing T28 and the S15 had a ball-bearing turbo similar to the GT25. S13 had a T25 stock. some FWD nissans also came with a ball-bearing T25. both are capable of handling 10-12psi. the problem is that your motor has 10.5:1 stock compression an unless you use some 116 octane or C16 the thing will detonate like crazy. ive seen hole in pistons you wouldnt believe.

i still dont think the T25 will flow enough air to fulfill your needs. i just checked my laptop and i cant find my t25 compressor maps. kinda pissed off actually. just give me til tomorrow. i will find the compressor map, figure out what the engine air flow requirements are, and get back to you with a full explanation.

in order to run that kind of boost daily you need a 2.5mm HG and do some ARP head studs for good measures. with a 2.5mm head gasket your CR will drop to about 8.5:1 and that would be nice. if you go with a 2.0mm HG it will be about 9:1 compression...but dont quote me on it 100%

turbodremz

iTrader: (18)

i have the HG and ARP studs ready..

and the s14/15 was the liquor talking...i should have known about the t28...

you dont need to go through the trouble, its not a big thing. like i said, i'm sitll a newbie when it comes to the 2jz, and i'm used to the smaller nissan 4 bangers that can use the t25 and be full of power. i just needed to get some input on the t25 on a 2j

i will pass up the offer then and look for a 60-1, or a ct-26...thanks for helong the drunk guy out on a whim..

5sp_jzz30

iTrader: (2)

no problem dude

i would do 2 T25 ball-bearing turbos on a 2jz. that would be nice response and great power. i would do it to be different and because i hate lag. most people would simply go single because its simple and no brains are required in this. all the info is out there.

i like being different so that my advice.

turbodremz

iTrader: (18)

i may just do that...twin t25 on a 2j-na....you may have just given me an idea, and some plans...

and the less lag the better, cause i've got the stock slush box, and want to keep my car a dd..

i may pick this turbo up, and find another later the fab up a manifold and go from there..

thanks for the advise 5sp...i may pm you with some other newbie questions that i have had if you dont mind

5sp_jzz30

iTrader: (2)

http://s16.photobucket.com/albums/b27/4sfed180sx/

this is the link to my photobucket. it has pics of the manifolds i made for my sr20. it may give you an idea. you can do a similar setup on the 2jz...except the front turbo would point down since the distributor is in the way and the back one can point up since there is no master cylinder to interfere with like the sr20 in a s13 chassis. enjoy

Spooled

iTrader: (1)

t25 is too small in my opinion. after owning 2 dsms, first being a 98 GSX w/ a t25, i'll tell you right now the t25 is a joke.

The turbo is out of breath by 5500 rpm, and isnt much efficient over 17psi. I found it pretty useless, on my 4cyl. Its only real power is in 1st, 2nd, and some of 3rd. Found the car to be quite gutless on the freeway, and a GSX weighs alot less than an SC.

For a daily I would suggest something like a 50trim, nothing too big, but bigger than a t25.

and for those talkin crap about DSMs, John Shepherds Talon puts alot of hurtin on 2jz's.

5sp_jzz30

iTrader: (2)

i talk crap about DSM because its true. one guy may be able to build one car right. thats the end of the story. if he did so much hurting on the 2jz then why are you here and not on dsmtalk? lol. the more the marrier.

unless you replace 90% of the parts on any older dsm it will keep on breaking. on btw the dsm t25 is extremely inefficient at 17psi. its blowing more hot air then anything else. the t25 on a dsm is a totally different turbo then a nissan version of the t25.

all i gotta say about dsm is that i worked on quite a few on them and they just keep breaking and its always small annoying problems. oh and you also cant forget the......knock knock, who's there? rod #3. here's another one: what you doing today? taking my crank for a walk.

i have worked on 3000gt vr-4, 1g gsx, 2g gst and gsx. they drive nice when they run.

you know how they say about turbo rotaries "60% of the time it works every time". same goes for DSM's.....just maybe a bit more often