t25 blown, going for t28

[seanman]

ok i've done research and i just wanted to clarify with people. i have a sr red top, the t25 is blown so im going to upgrade to the s14t28 turbo but i cant afford to do my injectors and ROM tune all at the same time. I've read that you can install the t28 with the necessary coolant line replacements but keep the stock injectors and boost around 9-10psi max so to not overload the fuel system. Is this correct? just want to make sure so i dont F**k my engine over. I will go for 550cc injectors and ROM tune when i can afford it, and probably the z32 maf as that seems common/necessary as well. just a couple quick replies to tell me if im right or wrong and if you feel so inclined as to give me some more tips or info, that'd be much appreciated. Thanks guys

[CoupedUp]

Yea, you'll be fine. The turbo is much better, enjoy it!

[seanman]

swank titties. anyone else?

[boro drift]

I've been running my T28 at 7psi and stock fuel system for 6 months, hard, and no problems.

[Sileighty_85]

10Psi is pushing it on 370cc inj.

When i Dyno'd mine @ 10psi it was leaning (back on Stock ECU, Fuel Pump, Inj)

[Clawhammer]

I would stay in the 6-8 range 10 max before you get the supporting mods. Don't listen to the people that say they've gone up to 16 on stock everything else. Got an AFR, easy way to keep an eye on things...

[johnnyballs180]

i wondered the same thing. i know what i need, i just can't afford it yet... i shoulda thought about that first though.

a lot of people recommended to me installing a bigger fuel pump. i went a Sard 265 lp/h, and it helped... sometimes when flooring it, the motor would bogg/cut out at around 4500 rpms. the new pump stopped that.

10Psi is pushing it on 370cc inj.

When i Dyno'd mine @ 10psi it was leaning (back on Stock ECU, Fuel Pump, Inj)

^^i'd take that to heart.g/l

[CoupedUp]

Thats why you dont run stock fuel pump and run more boost.

[Sileighty_85]

Thats why you dont run stock fuel pump and run more boost.

well when i say stock fuel pump I mean Stock SR Puel pump from my 180SX

[seanman]

i already have a walbro 255 and the nismo adjustable fpr, but i know the stock 370cc injectors cant take too high a boost. basically im gunna install the turbo first, get the reclocked plates for it, the SS lines and new crush washer. i already bought 460cc injectors but im waiting till i can afford an safc to install them, then i can street tune it

[johnnyballs180]

do you think the 460s will be big enough? and have you already figured out the oil restrictor?

[seanman]

im sure they'll be big enough for what i want. i dont really plan on riding around at 18.5 psi WOT all the time. plus i got a great deal on these injectors so i just went ahead with em. and with the safc/afr i'll have, i can be sure to see what my fuel is doing. if it comes down to it, i'll throw down the $$$ for a bigger set. and the oil restrictor to use is the one off the t25 isnt it? just need a new crush washer right?

[Clawhammer]

Ball bearing turbos require an oil restrictor. They don't need as much oil as a journal bearing turbo, if you don't use an oil restrictor you'll blow your oil seals real fast. Just buy the restrictor with your SS lines, they'll be an option for it wherever you buy your lines.

[johnnyballs180]

^^ indeed. keep us posted.

[seanman]

will do, just gotta wait for the $$$! but in the mean time, i would really like to get my tachometer working...i have an 89 piggy and i've read all over that for whatever effed up reason, the tachometer never works with the sr swap. anyone know how to fix this? i even swapped the jdm 180sx cluster that came with my front clip and it didn't work, tho i didnt expect it to. what should i do guys? (and gals)

[mRodiek]

clawhammer knows his stuff-dont take his advice lightly! loland try another dohc tach, could be your problem...

[Clawhammer]

The SOHC tach won't work on a DOHC motor. I'm using a tach from a twin cam KA and it works just fine. If you swapped a JDM cluster and it's still not working...you got other issues. My best advice would be to get an FSM and study those wiring diagrams.

http://www.btyproductions.com/clawhammer/240/FSM/

[seanman]

im having trouble figuring out where exactly the sensor or wire for the tach is located

[seanman]

ok people, i decided to go with a t25/t28 hybrid for monetary issues after much deliberation and bill paying lol. i was getting ready to swap the hard lines and noticed all the holes for the lines are offset like 120degrees. like the dump line for the oil is 120 degrees past the stock turbo. and all the holes for the lines follow in that fashion. two questions come with this, do i go with stainless steel flex lines? and also are the holes just offset but in the same pattern as far as inlet and outlet goes? i would think they are. let me know asap! i want my baby back up in running after so long. i hate driving this civic

ok, the dump line is pretty much upside down from stock, its almost parallel to the exhaust inlet...does this mean its a topmount turbo and that i'll need a topmount manifold? that would really blow. I've read that the oil dumpline is just gravity fed, no pressure so it wouldn't be a good idea to put a 90degree elbow on it and just run a line under the turbo. gad damnit
Modified by seanman at 1:31 PM 3/6/2009

[seanman]

heres some pics

[TKOcrewSR]

Not to impose but i have a s14 t28 turbo with taka lines i would sell you for 400, all fully bolt on.

SORRY DONT MEAN TO THREAD JACK!

[seanman]

im good man, i got this for a killer price and im not rollin in dough as the saying goes

[TKOcrewSR]

its cool but on your new turbo see if you can loosen the compressor and turbine housing and rotate the whole CHRA.

[seanman]

how do i loosen the compressor side? all i see are the bolts on the exhaust side that would loosen up

[TKOcrewSR]

take a pic of the back side of the compressor housing i think it should just be a snap ring a big one

[seanman]

ok there is a compression ring on the compressor side, the only problem is, its stubborn as balls > needle nose pliars arent doin the trick, anyone have any other nifty ways to get that thing to budge?

[seanman]

is it actually possible to spin the turbo around like this? i dont want to damage anything, i can practice on my old effed turbo but i just want to know nothing will happen if i do everything correctly. im getting started tomorrow morning

[wzntha]

.

[seanman]

well the exhaust and compressor housing would be in the same position relative to eachother, im just trying to spin the center of the turbo with the inlet and outlet holes. look at the pics above if you have not yet