metalCORE

iTrader: (2)

Hey folks,

i have rebuilded my engine over past few months, now running

HKS T04Z 0.61 hotside (HKS RX-7 Kit standard)
medium streetported engine (pineapple plates with Stage 4 Exhaust porting)
4x850cc injectors
FMIC (Greddy Elbow, just to mention)

plus a few other upgrades (HKS TwinPower, racing cat, feed sonic exhaust...)

i've been running a Garrett GT3582R (1.06 hotside) so far, at least i found a quite good setup (around 13 afr under boost), so the map would be fine for first start and a bite drivearound, but i hope anyone perhaps has a basemap (ideally the feed basemap they equip their T04Z turbo kits with - unfortunately the guy who sold me most of the parts of the kit had already sold the PFC with the feed map on it...)


any help highly appreciated!!!Thanks.

arghx

iTrader: (3)

You don't have enough injector.

Gorilla RE

iTrader: (1)

Agreed.

And that .61 housing is going to KILL your power.

-J

Trots*88TII-AE*

iTrader: (11)

Are you sure it's a .61? All the retailers I've seen selling them have them advertised in a 1.00 TiAl-style turbine housing, or a .84 A/R, which is un-officially about as small as you want to go on a T4 housing on a 13B.

turbotoaster

are you saying your getting 13afr when driving around in vaccum?

arghx

iTrader: (3)

It's an HK$ turbo, probably the same one they include for a Supra.

silverfdturbo6port

iTrader: (26)

i dont see whats wrong with his injectors at this point, as he did not even say how much boost he is running?

and as for that turbo size thats like the stock twin size lol WAY WAY too small the idea is to get rid of heat not add heat

Gorilla RE

iTrader: (1)

Yes, I have one in my shop right now. HK$ sells them in .61, .81 and 1.0. And the housings are not off the shelf Garrett units, they are HKS specific housings.

-J

Gorilla RE

iTrader: (1)

That fuel setup will support around 410hp at the flywheel @ 80% duty cycle. 410hp x .15%dt loss = 349whp. He could make that on 8psi with that turbo...

-J

metalCORE

iTrader: (2)

...i don't want to start these discussions...

To clarify things a bit: Gorilla ist right it is a GENUINE HKS Unit (the chra is new from garrett, as these are the same, just to mention). I guess for a medium streetported engine with 4x 850 injectors the hotside is O.K., as the engine was just rebuilded, i aim only for low boost (around 0.9 bar or 13 psi) or less for the first couple of miles...

Its a mystery all over us forums that these injectors are too small, there are enough information from japanese tuners who reached about 500 hp with these size of injectors and turbos like the t04z - i think a few of these informations can also be found here... was on hyperREV i think...

@turbotoaster: ...based on the map i use with the gt3582R, yes...

@Gorilla: sounds more thank O.K. for the monent, as i'm not aiming for big hp or anything at this moment, just looking for a map that is safe to drive...

Anyone who can HELP me in any kind of way? (Well, perhaps i change the hotside to a bigger one later and i will definitely use bigger injectors in the future), just need a BASE map i can use to drive around a bit, i just have enough time to find a complete setup, this will change in a couple of weeks.

Again, thanks to anyone who can help.

turbotoaster

ah ok, i was panicking then, i thought you were running 13afr while you were in boost.

also metalcore remember you are not from the US, there power figures are sometimes alot higher than us.....there dynojet whp numbers are like our flywheel numbers.

a t04z power is similar to a gt4088, with your streetport you will be making about 450bhp at 1bar, so if you happy running it at 10psi then you should have enough injector....i strongly recommend you get yourself a cheap 1.0 turbine housing and put it on.

Not purely for power etc, but for a decent powerband and also because the restricted backend will mean your engine will struggle to get the heat out(same issue as with twins)

silverfdturbo6port

iTrader: (26)

lol i would like to see

Gorilla RE

iTrader: (1)

Why? Chuck Norris couldn't do it with your engine?

metalCORE

iTrader: (2)

...that was the plan for the near future, of course. First i would be happy if the car would drive like it was starting after the whole rebuild - on the first turn of the key...its idling very well, so there seems no prob with the big exhaust port or anything.

I think a map for T04R or GT40 should go in the right direction, as i need to do some finetuning anyway...

arghx

iTrader: (3)

This is a Power FC car right? One of the reasons why I said "not enough injector" is because you won't find too many people running 850/850 on a T04Z/T04R. That makes getting a basemap hard. You won't even find that many people running 850/850 on stock twins. Yes I know there are probably a number of people doing it in Japan etc. Many of them may be using rising rate FPR's such that fuel pressure increases at a faster rate than boost pressure (not the same as a typical Aeromotive unit). They're also running close to 100% duty the whole time, which is safer on side feeds because the fuel cools the injector.

But 850 primaries are a pain in the *** and people are moving away from them. People are now using Bosch EV14 injectors from injector dynamics. The problem is that you have to adjust the lag settings and go through a bunch of crap to get the idle lean enough.

I can also tell you right now that 8 or 10psi is going to feel totally gutless on that turbo. It won't be a slow car but there just won't be any torque. I have a T04R with a 1.00 hotside, which is basically the same as your turbo but it's journal bearing with a bigger turbine housing. I have 720/1680 top feeds and at 16psi I am at 85% injector duty with base pressure at 43.5psi. At the more common 40psi fuel pressure I was at 90% injector duty.

You're probably not going to find an 850/850 map that will work on a T04Z out of the box. What you can do is find one for stock twins and heavily modify it from there.

arghx

iTrader: (3)

For what it's worth I am posting a T04R/T04Z map for your 850/850 setup. It's modified from my personal 720/1680 map. You will probably have to make significant changes to the air temp correction table. I put -10 lag on the primaries, that might be enough.

metalCORE

iTrader: (2)

@arghx: Thanks, i will have a look at it.

I know that its not enough boost for the turbo but as mentioned before, better than damage the engine on the first miles.

I also had my GT3582R tuned from scratch, but it takes a lot of time to get there...

I also have to add that i had never problems with the 850 primaries, i also adjusted them like described in the pfc manual and it works well for me - but later on i will change to any bigger top feed injectors, the sard rails are already here - just need to find a company that makes big enough denso style injectors (like RC).

I also agree that the setup is very uncommon, at least in europe or the us...

TheAsset

iTrader: (11)

Fuel is not something I'd skimp on...just monitor everything and pay close attention! Woher aus Deutschland kommst du?

KKMpunkrock2011

iTrader: (5)

what size top feeds are you looking for? Injector dynamics offers top feed injectors in 725, 1000, and 2200 cc sizes (the 2200's are labeled 2000) They don't need restrictors in the wiring either.
http://www.t1racedevelopment.com/en/...-dynamics.html

or you can talk to the guys at MZM performance
ask for Mutasim, he's got a cheaper alternative.
http://www.mzmperformance.com/

arghx

iTrader: (3)

The ones on the left look like they may be the Denso style, similar to what fits in the 2nd gen fuel rails. The Bosch style have larger diameter o-rings.

See the attached PDF's from Marren with o-ring diameters.

silverfdturbo6port

iTrader: (26)

u have to be a complete idiot. There is no way it will make 400hp on less than stock boost on a .61 turbine housing. And actually i might know a thing or two dude.

Gorilla RE

iTrader: (1)

Ok chief, you're the man

silverfdturbo6port

iTrader: (26)

and this comes from a guy who his best friend barely made 400 on 16 psi

metalCORE

iTrader: (2)

@Asset: Cottbus, near Berlin.

@KKMpunkrock: i tend to change to E85 then, so i will have to do some research to figure out the best injectors for the extimated goal in hp...

TheAsset

iTrader: (11)

Und wo kann man in Cottbus gut sein Auto ausführen? ...und warst du schon mal am Nürnburgring und wieviele RX7S' hast du schon gesehn?