nice street setup??

[EnJoiThaRex]

so i was thinking about a good turbo setup (i hoping somewhere close to 270) for a daily driver and this is what i came up with, i kno i wont get gas mileage like i would stock but you gotta give somethin to get somethin

add the si ring gear, counter shaft and 5th gear to my zc tranny

t25 turbo for quick spooling

a chip for higher revs<--- with that a t3/t4 size may work better

turbo cams

lager throttle body

intake manifold

piggyback system on a 2nd gen teg ecu

decent size intercooler

boost controller...ill prolly boost no more than 20 max

fuel rail and faster flowing pump ( unless i could find cheaper injectors

msd ignition coil and wires

all bolted up to an a6

w/ a rebuilt bottom end and a stronger valvetrain


in my baby

so if you have any comment about this please feel free to respond, this is going to be my summer/fall project so well see how it turns out

[drummingpariah]

Originally Posted by EnJoiThaRex

add the si ring gear, counter shaft and 5th gear to my zc tranny

I dig it.

Originally Posted by EnJoiThaRex

t25 turbo for quick spooling

good plan, it's just right for the d16a6.

Originally Posted by EnJoiThaRex

a chip for higher revs<--- with that a t3/t4 size may work better

no. not a chip. more on this later.

Originally Posted by EnJoiThaRex

turbo cams

call Crower.

Originally Posted by EnJoiThaRex

lager throttle body

and d16y8 intake manifold.

Originally Posted by EnJoiThaRex

piggyback system on a 2nd gen teg ecu

no. Use a pm6, and tune it using PGMFI roms. They're already better established than any piggyback, cheaper, and retuneable. Visit http://pgmfi.org for more info.

Originally Posted by EnJoiThaRex

decent size intercooler

must-have. Cheap ebay intercoolers work fine, or something from a salvage yard like a Starion intercooler would work fine for a t25.

Originally Posted by EnJoiThaRex

boost controller...ill prolly boost no more than 20 max

Adjustable wastegate?

Originally Posted by EnJoiThaRex

fuel rail and faster flowing pump ( unless i could find cheaper injectors

DSM 450cc injectors will work fine. The LAST thing you want to do is run your turbo engine lean. Also, if you're doing a homebrew turbo setup, you can't just use any old piggyback ecu. You'll either end up rich or lean. Get yourself a wideband o2 sensor and some burnable ROMS to go with your pm6 (see above).

Since this is a daily driver, I suggest against the Walbro pumps, as they're generally very loud. Mine was, anyway. I'm not sure what I can suggest positively, but hopefully you'll get other input.

Originally Posted by EnJoiThaRex

msd ignition coil and wires

and plugs. dual-point is just fine, I wouldn't waste money on the quad-platinum-wipes-your-ass-for-you spark plugs. There's a great writeup on them here somewhere.

Originally Posted by EnJoiThaRex

all bolted up to an a6

Hotness. Rock the d-series like there's no tomorrow.

Originally Posted by EnJoiThaRex

w/ a rebuilt bottom end and a stronger valvetrain

Details. I'd suggest putting together an exact list of EVERYTHING you need (even so far as head studs, possible problems like broken axles, a new clutch, etc). Put together a few budgets and have everything together so you can potentially get it all done in a weekend.

You won't, of course. Things never go that smoothly. But there's no reason not to do all the prep work at once.

Make sure you clean the engine bay if you take the motor out. It'll make a big difference.

Otherwise, good luck, and take lots of pictures!

[EnJoiThaRex]

Got a few more ?s

So an aftermarket IM is not required? The y8 flow path is sufficient?

I was thinking of possibly breaking axles as well. Anyone know a good link for axles? Or how much power factory axles can take?

Got the LSD ZC so im good with that :w00t, which will contribute to the above scenario.

This may be a dump question..but using DSM injectors will delete my resistor box, correct?

[98vtec]

20 psi out of that small turbo? why not run a bigger turbo with a "small" a/r with less boost? Surely 20psi is way outside the efficiency range of a tiny t25.

convert to OBD1 and get it over with. Then contact a tuner in your area.

Honda-Tech.com: Engine Management and Tuning: Are you a Tuner? Post here!

[drummingpariah]

Originally Posted by EnJoiThaRex

So an aftermarket IM is not required? The y8 flow path is sufficient?

Well, you're going turbo so it's more about pressure than it is flow. You'll be fine with a stock manifold. You're going to have to worry more about fuel delivery than anything.

Originally Posted by EnJoiThaRex

I was thinking of possibly breaking axles as well. Anyone know a good link for axles? Or how much power factory axles can take?

Factory axles can take around 150ft/lbs of torque (hp has next to nothing to do with this). Get some reman'd axles that come with a lifetime warranty, and you should be set.

Originally Posted by EnJoiThaRex

Got the LSD ZC so im good with that :w00t, which will contribute to the above scenario.

Killer. LSD ftw.

Originally Posted by EnJoiThaRex

This may be a dump question..but using DSM injectors will delete my resistor box, correct?

It depends on the DSM injectors. DSM had both peak-and-hold and saturated. Saturated injectors don't need a resistor box, pean-and-hold injectors do. For simplicity's sake, I'd get some good 250cc/300cc DSM injectors, clean them (they'll be cruddy), replace the gaskets on them, and mod your intake manifold to accept them (shouldn't take much modding, you should be able to just hog out the gaskets). Read up here:
DSM Injector Install

and come back with more questions, if you still have 'em.

[EnJoiThaRex]

Originally Posted by 98vtec

20 psi out of that small turbo? why not run a bigger turbo with a "small" a/r with less boost? Surely 20psi is way outside the efficiency range of a tiny t25.

convert to OBD1 and get it over with. Then contact a tuner in your area.

Honda-Tech.com: Engine Management and Tuning: Are you a Tuner? Post here!

Your right. I was looking up more info on the T25 and the CFM at 15 psi is still pretty low, so 20 is out of it's range. Some kid is selling a Thunderbird turbo here so I'm looking into that

As for tuning, Im doing it myself. I'm going to school for automotive training and I've been reading up alot on how to tune and I have been learning the basics and everything.

Is obd-1 necessary though?

Originally Posted by drummingpariah

Well, you're going turbo so it's more about pressure than it is flow. You'll be fine with a stock manifold. You're going to have to worry more about fuel delivery than anything.

Yeah, pressure and flow on the intake side is different from pressure and flow on the exhaust.

Originally Posted by drummingpariah

Factory axles can take around 150ft/lbs of torque (hp has next to nothing to do with this). Get some reman'd axles that come with a lifetime warranty, and you should be set.

That will work out nice

Originally Posted by drummingpariah

Read up here:
DSM Injector Install

Good link. I'm thinking about going with the 450s and still use the factory fuel pump.

[hndacvcsi]

i will inject my two cents into the conversation if i may. i have a few suggestions.
1-autozone does lifetime warrantee axles for 70 a piece but if your saving up just put some extra away and get a set of entry level drive shaft shop axles(or dss as you might see), and 2- if your not going to go with a walbro fuel pump, dont leave the stock one to bear the load. upgrade to a gsr, or even a type-r, it will relieve some of the pressure of of your fuel needs.

as for a turbo size, a t25 is great for a quick spool fun to drive car, and i would stick with it. a t3/t4 is a nice set-up but if your boosting 20 lbs. on a street rex, your driving a rocket ship. my advise is to keep the t-25, and boost a safely tuned 11-12. your off the line response will be insane, add the lsd and a fast spool and your looking at a monster. plus you will have better response when in a corner or accelerating out of one as the t-35 will already be spooled up at around 2500 rpm's maybe sooner

[EnJoiThaRex]

Thanks for the input.. Gsr fuel pump is something will look into as well as the axles

as for the T-25, I don't want a turbo that would max out so soon, so im probably just going a step or 2 up.

[hndacvcsi]

HKS USA GT2835 Turbo
try something along these lines for your a/r and such its suited to a 1.6-1.9 liter if you really want something a bit bigger, look into something with similar specs to this
HKS USA GT3037 Turbo
this particular turbo was named the best 2.0 liter turbo made, which says alot about how quick it spools, but at the same time how much power you can make.

also if your looking for a sort of hybrid turbo look into the "disco potato". TurboByGarrett.com - Catalog

this is a modified gt28rs turbo made to be very high power while maintaining its relatively quick spooling charachteristics

[EnJoiThaRex]

Nice links..Though the first two are a bit too big lol. The "disco potato" with the smaller housing is about what I'm looking for. I'm still thinking of a compressor size but for the turbine somewhere around 50-60 mm wheel w/.48-.60 A/R (<--Though that starts to get kind of big). Thats why i was thinking t3-t4, but I'll keep looking. I have plenty of time to piece this build together.

[hndacvcsi]

the disco potatoe was actually what i wanted on my 00' si for its supreme hybrid nature. it was frist debuted on a 2001 sentra se-r spec-v during the first annual uscc(Ultimate Street Car Challenge). it was made by a guy in garrett as a "project" and thus the disco powered sentra was born. they were so impressed by its power(the sentras best 1/4 was launching in 2nd) they decided to make it a full production piece,

they also put one onto a sr20det swapped s14. it was a direct replacement for the t-25 flange located on the sr20det, and was reaching full boost by 2300 rpm's with i beleive the quote was "Holy smoking wheel", as they had about 271 hp with no lsd. it was said that after 2300 rpm's, first was useless, second was iffy, and 3rd was suck your eyes out of your asshole acceleration

[EnJoiThaRex]

Originally Posted by hndacvcsi