Ok so my motor has low compression across the board (125)

[BigTDogg (MA)]

stop making sense, jerk.

Fire is not hot. Better?

OK so time out lets see so nolimit and bigtdog like the idea of me going with sport 700's and nismo 740cc injectors with the new style fuel rail adapter kit

I like the 700's because they spool up quick and hold boost longer who wouldnt love that. But here is the ultimate question will i be able to use the 700's with nismo's 740cc injectors. With stock intercooler/piping stock manifolds ecu??? If not what more mods will have to be done?

On a side note: Eventually i will be upgrading to hks fmic and upgrading piping. But for the time being will those mods work with those stock units??

If you're sold on an FMIC, go with the TDM Works FMIC, it has the 2.5" inlets you need with the larger piping.

700s with 740s is fine. 300° fuel rails are superior to the adapter kits.

With stock IC piping and manifolds, you will have some heavy lag.

Your ECU will need to be reprogrammed at a minimum for your new injectors. Once your car is completely built, I would suggest a proper dyno tune and EPROM flashing.

You've got a lot of reading to do

[300ZXttZMAN]

OK so time out lets see so nolimit and bigtdog like the idea of me going with sport 700's and nismo 740cc injectors with the new style fuel rail adapter kit

I like the 700's because they spool up quick and hold boost longer who wouldnt love that. But here is the ultimate question will i be able to use the 700's with nismo's 740cc injectors. With stock intercooler/piping stock manifolds ecu??? If not what more mods will have to be done?

On a side note: Eventually i will be upgrading to hks fmic and upgrading piping. But for the time being will those mods work with those stock units??

sport jwt700bb turbos DON'T spool up quick without supporting modifications.
i.e., 2.5'' ic pipings and ics, msp manifolds, and 3'' exhausts.
YES, you can use the 700 with nismo740cc fuel injectors.
if you're staying with stock ics and ic pipings and manifolds, get a smaller set of turbos.

Ok but could i run the sport 700's (saftely without causing damage to anything) even with stock ic's and pipes until i have the money to upgrade them(Roughly 2 months). Then make the turbos spOOl up fast like their supposed to with the supporting mods ?? Or would it absolutely not work unless i had the upgraded pipes/ic at the same time with the turbos??

[300ZXttZMAN]

stop making sense, jerk.

Fire is not hot. Better?

OK so time out lets see so nolimit and bigtdog like the idea of me going with sport 700's and nismo 740cc injectors with the new style fuel rail adapter kit

I like the 700's because they spool up quick and hold boost longer who wouldnt love that. But here is the ultimate question will i be able to use the 700's with nismo's 740cc injectors. With stock intercooler/piping stock manifolds ecu??? If not what more mods will have to be done?

On a side note: Eventually i will be upgrading to hks fmic and upgrading piping. But for the time being will those mods work with those stock units??

If you're sold on an FMIC, go with the TDM Works FMIC, it has the 2.5" inlets you need with the larger piping.

700s with 740s is fine. 300° fuel rails are superior to the adapter kits.

With stock IC piping and manifolds, you will have some heavy lag.

Your ECU will need to be reprogrammed at a minimum for your new injectors. Once your car is completely built, I would suggest a proper dyno tune and EPROM flashing.

You've got a lot of reading to do

Very interesting will it be driveable (and kinda fast) but most importantly not hurting anything if i run everything listed above BUT basically with stock breathing until i have the money for ic/pipe (only air mod is air filter)

[vulcanrush]

Ok but could i run the sport 700's (saftely without causing damage to anything) even with stock ic's and pipes until i have the money to upgrade them(Roughly 2 months). Then make the turbos spOOl up fast like their supposed to with the supporting mods ?? Or would it absolutely not work unless i had the upgraded pipes/ic at the same time with the turbos??

you have a crappy-compression motor/engine right?
i wouldn't run jwt700bb turbos.
i would rebuild your engine first.

[BigTDogg (MA)]

i would rebuild your engine first.

I think the plan is a rebuild, and he's looking for opinions of what to do while the engine is out.

300zxttzman, were your compression numbers taken on a hot, warm or cold engine?

[300ZXttZMAN]

Ok but could i run the sport 700's (saftely without causing damage to anything) even with stock ic's and pipes until i have the money to upgrade them(Roughly 2 months). Then make the turbos spOOl up fast like their supposed to with the supporting mods ?? Or would it absolutely not work unless i had the upgraded pipes/ic at the same time with the turbos??

you have a crappy-compression motor/engine right?
i wouldn't run jwt700bb turbos.
i would rebuild your engine first.

Yea i have crap for compression FOR NOW

Im getting this http://www.conceptzperformance.com/Cart ... 9.12.25.68

and since im putting a fresh motor in there mine as well upgrade the turbos while the motor is out

I want to do all these mods at the same time i will have the motor out of my parts car that i will be rebuilding with that kit ^ and when i get it complete and ready to put in my car ill pull my motor out and put it in with the new wiring harness new injectors and new turbo's

You following me volcanrush?

[vulcanrush]

i'm sorry, i wasn't clear, i apologize.
i meant, rebuild first and see how much money you have left over.
your budget is 6k, right? the kit alone is, let's say, 2k? how much will the shop charge (maybe bore, hone, refresh the heads)?
new fuel injectors with an adapter kit, another 1300-1400?
jwt700bb turbos are almost 2700? an efi wiring harness is 350-400? gaskets, hoses, motor/engine mounts, 120k pack (another 550 bucks+).
see how much money you have left over first. a rebuild is more than just getting a rebuild kit with pistons and rods, and calling it a day.
maybe sport 530bb's, which are GREAT street turbos, might fit your budget afterwards?

[300ZXttZMAN]

yea i know but i have my own money also that will take care of labor my dad is willing to loan me 6k for what ever i may need to complete this stage of the build

quote from my dad: "I want to see that beautiful car run"

gotta love dads


edit: gotta love parents! but deffinately car savy dads

[BigTDogg (MA)]

300zxttzman, were your compression numbers taken on a hot, warm or cold engine?

[vulcanrush]

yea i know but i have my own money also that will take care of labor my dad is willing to loan me 6k for what ever i may need to complete this stage of the build

quote from my dad: "I want to see that beautiful car run"

gotta love dads

i love parents too.

but in parts alone, 2k (rebuild kit), new fuel injectors (1,400), 120k pack (i can't believe you didn't mention this ---- 550), gaskets (300), efi wiring harness (400), that leaves you about 1500 for turbos.
i didn't mention possible maintenance items like a new tt fuel pump if the old one is worn out, knock sensor if the engine is out of the car, new fuel hoses, an electronic boost controller maybe?

[300ZXttZMAN]

300zxttzman, were your compression numbers taken on a hot, warm or cold engine?

Hard to say i didnt actually do it my self the shop did it (not a shade tree shop)
i would guess it was warm

[300ZXttZMAN]

yea i know but i have my own money also that will take care of labor my dad is willing to loan me 6k for what ever i may need to complete this stage of the build

quote from my dad: "I want to see that beautiful car run"

gotta love dads

i love parents too.

but in parts alone, 2k (rebuild kit), new fuel injectors (1,400), 120k pack (i can't believe you didn't mention this ---- 550), gaskets (300), efi wiring harness (400), that leaves you about 1500 for turbos.
i didn't mention possible maintenance items like a new tt fuel pump if the old one is worn out, knock sensor if the engine is out of the car, new fuel hoses, an electronic boost controller maybe?

Yea your right but the kit rebuild kit comes with all that i think. But as for the fuel pump i have the one out of my parts car

[vulcanrush]

Yea your right but the kit rebuild kit comes with all that . But as for the fuel pump i have the one out of my parts car

you're right, it comes with the nissan oem gasket kit and a water pump and a timing belt, so instead of 1,500, that leaves you 2,000 for the turbos.
knock sensor, ptu, tps, o2 sensors, motor/engine mounts, hoses can eat that up fast.
and a good ebc, like a blitz, is easily 550 bucks+.
so maybe jwt sport530's, etc, are more suitable for you budget. but you seem to have your heart set on sport700's.

[300ZXttZMAN]

Yea your right but the kit rebuild kit comes with all that . But as for the fuel pump i have the one out of my parts car

you're right, it comes with the nissan oem gasket kit and a water pump and a timing belt, so instead of 1,500, that leaves you 2,000 for the turbos.
knock sensor, ptu, tps, o2 sensors, motor/engine mounts, hoses can eat that up fast.
and a good ebc, like a blitz, is easily 550 bucks+.
so maybe jwt sport530's, etc, are more suitable for you budget. but you seem to have your heart set on sport700's.

Yea i already new hose kit freshly installed, 2 brand new oem o2 sensors already installed, plenty of tps sensors... Im going with a manuel boost controller till my moneys not funny.. But yes i have a hard on for the sport 700's so thats what im getting if i have to sell the bed that i sleep on to be able to afford it ill do it



I WANT SPORT 700'S!!! hah

[BigTDogg (MA)]

knock sensor, ptu, tps, o2 sensors, motor/engine mounts, hoses can eat that up fast.
and a good ebc, like a blitz, is easily 550 bucks+.
so maybe jwt sport530's, etc, are more suitable for you budget. but you seem to have your heart set on sport700's.

Shouldn't need to replace those first 3 things unless they're bad. The O2 and mounts I agree with. Same with hoses, though using SAE J30R7 hose for coolant hoses will save some money. Silicone for all vacuum lines. Do it once, do it right.

The difference in turbo cost is minimal, $300. The real cost is in the breather mods. Which can be done later, but some things like the inlet pipes are easiest to do with the engine out.

DO NOT USE A MANUAL BOOST CONTROLLER!!!!

They are bad, lead to boost spikes, and make your engine go boom. Do it once, do it right.

[NolimitZ32]

Im going with a manuel boost controller till my moneys not funny.. But yes i have a hard on for the sport 700's so thats what im getting if i have to sell the bed that i sleep on to be able to afford it ill do it

DO NOT USE A MANUAL BOOST CONTROLLER!!!!

They are bad, lead to boost spikes, and make your engine go boom. Do it once, do it right.

Please don't use a MANUEL boost controller, they take siestas and INS could get you for running one under the hood.

[300ZXttZMAN]

Ok i did use th silicone hoses i aggreeee completely "do it once, do it right" as a matter of fact i cant explain how much i agree with that..

as for the boost controller i just wont use one till my money is not funny

so when you say the breather mods can be done later are you saying that i could run all this stuff even with stock breather setup?????

[NolimitZ32]

You can run big turbos with stock breather hardware but you shouldn't boost them too high (i am by no means an expert on this) but physics and flow dynamics dictate that the harder it is for them to breathe the harder they will push the more internal wear will result. Now what degree this will be to I cannot speculate but better safe then sorry.

[300ZXttZMAN]

You can run big turbos with stock breather hardware but you shouldn't boost them too high (i am by no means an expert on this) but physics and flow dynamics dictate that the harder it is for them to breathe the harder they will push the more internal wear will result. Now what degree this will be to I cannot speculate but better safe then sorry.

okk lets see what everyone else thinks i really hope i can do this

[BigTDogg (MA)]

You can run them, but they will be laggier. Meaning; you won't hit power till 4500RPM instead of 3500RPM (pulled numbers out of my a**, but the breather intake and IC piping, along with 3" exhaust makes a HUGE difference in spool)

PSI is resistance to flow. More PSI means more power, yes, but 500RWHP at 20PSI isn't as good as 500RWHP at 18PSI, because the 18PSI engine isn't working as hard, so things aren't getting as beat up.

If you're going to run stock IC pipes, get some Z1 SMICs and run those until you can afford to upgrade to the 2.5" IC pipes, 58mm throttle bodies and either Massive ICs or TDM Works FMIC.

[300ZXttZMAN]

well im not going to be able to go that route im going to have to roll with the stockies i wanna make sure that it does not damage anything being that it will be short on air

[NolimitZ32]

Thats pretty much it.

EDIT: you wont do damage if you set it up correctly as in not too much boost, and don't flog it all the time.

[300ZXttZMAN]

it sucks because
1. the power wont be near the same as sport 700's
2. Im going to have to pull the motor again! when its time for upgrading *sighs*

[vulcanrush]

it sucks because
1. the power wont be near the same as sport 700's
2. Im going to have to pull the motor again! when its time for upgrading *sighs*

the power won't be the same, but it'll be more driveable.
how often are you going to go at 140mph+? i'd rather have stock turbos than sport700's without supporting modifications.

[vulcanrush]

well im not going to be able to go that route im going to have to roll with the stockies i wanna make sure that it does not damage anything being that it will be short on air

Tony said it'll be laggier, you won't be doing any damage (with a good tune).
the only damage i can think of are overboosting (on a given fuel), running too lean (stock fuel injectors, etc.) ---- i'm sure there are more, but that's all i can think of.

[BigTDogg (MA)]

well im not going to be able to go that route im going to have to roll with the stockies i wanna make sure that it does not damage anything being that it will be short on air

Sentences please.

I have no idea what you're trying to say here. There's nothing wrong with stock turbos and breather mods. You'll get a reliable, incredibly responsive 420+RWHP on pump gas. Plus you'll save about $2k versus the Sport700s. If you just get new CHRAs for your stockers it's about $600 for the pair.

IMHO, you need to breathe, then begin the removal and teardown of your engine, and determine the root cause of your low compression. Do your own compression check as well. It's a very easy test to do, and if the shop did it cold, all this fuss could be about nothing. Was your car running like cacapoo before you brought it to the shop?

If it turns out your rings are shot, find a good machine shop near you to do the torque plate honing work, maybe even refresh the heads a bit and take it from there. The IC pipes can be installed with the engine in. The 3" exhaust can be done with the engine in. The only things that need to be done with the engine out are the manifolds, compressor inlets and turbos. Everything else can wait.

[ztommyx]

i've replaced one of the turbos with the motor IN the Z on my Greddy TD-05

[NolimitZ32]

The mani comes down low enough to do that? BTW apparently Greddy only lists the TDO4H 15g kit now, no more TDO5 16g.

[300ZXttZMAN]

Well im not going to be able to go that route im going to have to roll with the stockies. I wanna make sure that it does not damage anything, being that it will be short on air.

Sentences please. Fixed
I have no idea what you're trying to say here. There's nothing wrong with stock turbos and breather mods. You'll get a reliable, incredibly responsive 420+RWHP on pump gas. Plus you'll save about $2k versus the Sport700s. If you just get new CHRAs for your stockers it's about $600 for the pair.

IMHO, you need to breathe, then begin the removal and teardown of your engine, and determine the root cause of your low compression. Do your own compression check as well. It's a very easy test to do, and if the shop did it cold, all this fuss could be about nothing. Was your car running like cacapoo before you brought it to the shop?

If it turns out your rings are shot, find a good machine shop near you to do the torque plate honing work, maybe even refresh the heads a bit and take it from there. The IC pipes can be installed with the engine in. The 3" exhaust can be done with the engine in. The only things that need to be done with the engine out are the manifolds, compressor inlets and turbos. Everything else can wait.

NO my car was not running to its top shape smoking a little bit when it wants to ( but still smokes when it wants to not as much tho). Now it wont rev past 4k ( i bought 6 brand new oem coil packs, no difference) thats why im thinking it is compression

Im just out of choices unless someone can come down to sulphur and give it a good looking at

Also yes that is exactly what i plan on doing there is a good machine shop that we do good bit of buisness with. Im going to have him press everything in and acid dip, vat, ...... The works even rework the heads valves, lifters, seats, ect (i have a noisy lifter) basically make it how it was when it drove off the floor of nissan in 90' but with forged internals

BTW: Im looking into what you said about rebuilding the turbos, not a bad idea im going to consider.


EVERYONE LOOK> Ok just so everyone knows my car will not be getting alot of down time just strictly the amount of time it takes to reinstall the good rebuilt motor I have. The reason being is that i have decided that im going to be rebuilding my parts cars motor that was wrecked so that way i can still drive my z if i want.

[300ZXttZMAN]

So the good thing is that since there will not be a whole lot of down time i will be able to take my time in this rebuild. Which i belive is key when your doing anything like this, the ol saying >> "pay attention to details"