Low boost turbo kit

[SSDwellah]

I am about to buy a low psi turbo kit consisting of:

ManifoldTo4bTurboXS bovTial gateOil in/drain Kit

Will I be able to run say 4psi (tial gate is available with 4.35 psi spring, I think there is one spring lower probably 3psi) on stock injectors and pump or will I need some sort of fuel upgrade even at that level? i.e. walbro 255lph pump, some FPR, or ECU reprogram w/ 370cc injectors?

It's cold where I live and I plan on waiting until spring (save my money) for an intercooler, better fuel setup, aesthetics etc...

Has anyone done this?

[WDRacing]

At a minimum I would get a fuel pressure regulator and an intercooler. You can get a I/C from a junk yard off of a transport truck of some kind. I'd say no more then 5 psi, but I'm pretty sure up to 5 would be ok. You really don't want to run out of fuel.

WD

[SSDwellah]

Any recommendations on the FPR? Aeromotive FPR, Vortech FMU? Thanks for the reply, I know a low boost turbo kit was covered before but mine is different

BTW why does vortech make 12:1, 10:1, 8:1, 6:1, 4:1? I know A/F ratio is between 11.5-12:1 for turbo (14.7:1 N/A) so why are there others? Are these for different fuels or am I supposed to know something that I don't?

Does this mean 12 psi fuel for every psi boost? If so what do you recommend for aforementioned 4 psi system?

Thanks WDR.

[WDRacing]

I would recommend any rising rate fuel pressure regulator. At only 5 psi you won't need a very expensive unit. For the longest time, all I had on my skyline was an aftermarket fuel pump. I never had the pressure set. It worked for 20 psi pretty well.

I'll look at those Vortechs for you later, I have to finish Xmas shopping.

WD

[huguetpj]

"12:1, 10:1, 8:1, 6:1, 4:1" means how much PSI of fuel the regulator adds for each PSI of boost. The stock FPR should be close to 1:1.

[WDRacing]

Well looks like someone beat me to it...

[huguetpj]

WD now one question I have regarding FPR. Let's say one has 32PSI of stock fuel press and 10:1 FPR. So if I'm running 10PSI of boost the fuel rail would see 132 PSI of fuel press? Am I doing my math correctly?

Thanks

[SSDwellah]

yeah, just before it exploded and burned down the garage... mathematically it would seem so but that seems high since most 14psi ka's use a 55lb fuel rail (unless I'm retarded?)

BTW merry Christmas!!!

[Phixius]

I'm planning on doing a low boost application also. I have a Garrett T3 (A/R is 42, is that too small?) and Intercooler both from a Saab 9000. I want to run about 6-8 PSI, will I have to just get a FPR for that or fuel pump or 370cc injectors or a combination? I have 76K miles on my KA24DE. The biggest expence is the turbo manifold, I've only found a revhard for $414 USD at overboost, any better prices?

~*~*~*~*~*~*~*~*~Merry Christmas~*~*~*~*~*~*~*~*~

[SSDwellah]

Just as an update, I think I'm getting a fuel pump also just to be sure (unless you have brand new oem spec fuel pump, which is probably still maxed out).

[I am Technoman]

I think an FMU and a bigger pump is a must for low boost just to be safe...

[huguetpj]

SSD... I know that's imposible for the stock fuel rail, I thought so myself but that is why I asked. Cause 132PSI seemed like a lot of press :pface, anyway I'm going the bigger injector way and leaving the stock fuel press.

[SSDwellah]

SSD... I know that's imposible for the stock fuel rail, I thought so myself but that is why I asked. Cause 132PSI seemed like a lot of press :pface, anyway I'm going the bigger injector way and leaving the stock fuel press.

What are you doing about the electronics? Stand-alone, piggyback, reprogrammed ecu?

[huguetpj]

I already bought another stock ECU and I'm planning on playing a bit with it to add a child board and reprogram the maps. There was one dude in another forum that found out exactly how to do it (after asking many questions in that forum) but then went back and erased all his messages and is now selling the boards... stup... f... >:|

Anyway I'm still in the research stages...

[DriFt3r]

I'm running 7lbs of boost with a small T-25 for about 20,000 miles on all stock everything. Nothing touched and the car is a daily driver. I tried 8lbs but the engine started to lean out so I went back down to 7 just to be on the safe side.

[Imissmyturbo]

I though you could run 5 psi MAX with a small turbo without any fuel upgrades. The stock MAF meter should be able to keep up with the airflow. This is just info I have read. I don't think using an IC is recomended for that setup if I am correct.

[Structure240sx]

dont skimp out on ur fuel system i have experience

[toki]

I am very much thinking about getting a small boost project running soon, nothing big, but the car is just too slow as it is. I don't like it. I am thinking:

JGS log manifoldAiresearch T3 .42/.48 (or whatever that popular yet undersized one is)Junk yard IC then I need to IC piping and downpipe and intake pipe and all that jazz.

5psi

The whole point of this is just for better daily driving and acceleration. Someone had another thread about how they were using this turbo and it held boost to about 4500 psi at 7 or 8psi then dropped to 4psi I think after that. So from this I can only assume there would only be a small drop off if any from what i'm running anyways.

Now the other thing is, how much can I really expect from this? 5psi intercooled on a 2.4L motor...45-55hp? what about torque numbers on the KAE? If a FMU really neccisary for just 5psi?

[aquaman]

I was actually very curious about this as well. First off I'm pretty much a noob, I've been reading a lot form this forum, but haven't had much to contribute as of yet. However, I was considering a very low boost application ~5-7psi , just to get my feet wet. I was considering the following setup.

T25 (since they seem to be plentiful and relativly inexpensive)

Considering either an IC from the junkyard or an SMIC from an SR20 and making it fit (S14 Kouki)

finally a Walbro fuel pump.

This seems like a relativly safe setup on stock internals, however as stated before (I'm a noob). It seems to me that the small intercooler would be enough to prevent the detonation from heat, but if the fuel is too lean I don't know that the IC would make much of a difference at all.

Thusly this thread is very interesting to me as well. To FMU or not, that is the question.

[virus77]

you are very much a newb actually, you just revived a thread from 2002.

[aquaman]

Oops, well I say if your gonna be a newb do it well, I just got really excited about the info and thought I'd would post, I completely forgot to look at the dates. Sorry.

[InsanityInc]

Why the hell would you want 4psi? You could make significantly more power NA for cheaper.

[SSDwellah]

In honor of aquaman and the recent 5 year anniversary of this post I will tell you this. The car handled 10-12 PSI easily with just 370cc Silvia injectors, a walbro pump, and a JWT retune. And now it's for sale. Ahhhh memories...

[konjiki7]

What did the car end up with? And what made u get ride of it?

[aquaman]

Thanks Mate!