hey i need some input on what i can do to better this setup without spending cash on upgrading the block, so here's my plan:

i have a greddy 18g turbo kit, 375hp fmic, turbo timer, 255 fuel pump, s200, fpr, and that's pretty much it.

what i'm probably going to do to lower compression to compensate for the stock pistons will be to get an hks headgasket (82.5x2.6mm) which should help. would this help anything at all, or will it end up just causing complications?

now im wondering if i'll be safe with 310 injectors @ maybe 7 or 8 lbs. my goal is at least 220whp.

help is appreciated. thanks in advanced

 

7 or 8 pounds will give you more than 220whp i think. go ahead and get DSM 450's. they are cheap ( maybe 60 bux) and use those. might need to get a fuel rail. if i am not mistaken, they have a larger inner diameter that will flow more gas. lastly, if you are going to boost low, just keep the headgasket you have. all you have to do is make sure you have a good tuner and nothing should go wrong.

 

thanks for the quick reply.

aren't 450's low resistance, meaning i'd have to get a resistor box?
also, what good with a fuel rail be with an fpr? i thought the fpr carries the fuel to all the injectors and the cold start valve?

so you think the headgasket is completely obsolete? i'm just a little apprehensive seeing that 10.5:1 comp is a little high for boost, but i still wanna do it.

i'm not trying to be a smart *** in any way, i'm just trying to understand what's going on

 

7psi on a gsr, stock block, as long as you get it tuned you will be safe
http://www.rcautoworks.com/AndysCar.htm

 

wow. didn't know 7 psi makes near 300whp.

what is this:

-------------------
RC Autoworks 3 open downpipe w/ O2 dump
-------------------

i just have a regular 2.5 -> 3 in DP. and stock internal wastegate.

what is it even tuned with? i notice he's got a p28 chipped just like me, but what's he tuning with?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by gsr x civic &raquo;</TD></TR><TR><TD CLASS="quote">wow. didn't know 7 psi makes near 300whp.

what is this:

-------------------
RC Autoworks 3 open downpipe w/ O2 dump
-------------------

i just have a regular 2.5 -&gt; 3 in DP. and stock internal wastegate.

what is it even tuned with? i notice he's got a p28 chipped just like me, but what's he tuning with?
</TD></TR></TABLE>

Yes it was tuned, he was using chrome I believe.

 

ooh.
but hondata would work just as good right?

also, he was running an LS. would i make nearly as much power at 7 lbs with my car?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by gsr x civic &raquo;</TD></TR><TR><TD CLASS="quote">ooh.
but hondata would work just as good right?

also, he was running an LS. would i make nearly as much power at 7 lbs with my car? </TD></TR></TABLE>

Yes, Hondata would be fine as long as the tuner knows what he is doing. He was running a gsr

 

what does open downpipe with o2 dump mean? that i'm not understanding.

also, was he running stock sleeves? what kind of exhaust was he running? was he running a 3 or 2.5 ?

right now, i have a 5zigen exhaust, i think it may be a 2.25

so you dont think im going to need to lower the compression at all? the stock 10.5:1 compression will work? i mean, i'd be willing to get the headgasket if it may decrease the possibility of my motor blowing.

 

Open downpipe = no exhaust

 

that head gasket isn't goin to help you, everyone that i know that ran the thicker head gaskets keep blowin em, oem all the way
yes 310 injectors will be fine IF THATS ALL THE BOOST YOU PLAN ON EVER RUNNING
you can run up to 10psi on stock map sensor and injectors but the bigger the better and safer!!!!
on 8lbs with a small turbo on a stock gsr you should be right at what you want id say a good tune would put you close to 250hp
do not take the cheap way on this you SHOULD buy a new map sensor and bigger injectors that way you can do whatever, tuners hate tuning small injectors cuz they max out too easy
and without the right map sensor you aint running any boost itll just keep cutting out

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SIXTY-1HATCH &raquo;</TD></TR><TR><TD CLASS="quote">and without the right map sensor you aint running any boost itll just keep cutting out</TD></TR></TABLE>

sorry but you are wrong here. you can tune a car to whatever boost pressure you want, its just that it wont be "on the map" the fuel will still be using the "last colum" on your map. the car will run fine.

 

depending on how healthy the motor is u can put some good numbers down/+ a good tuner. I have an turbo gsr everyday driver at 7psi put down on a street tune on 93oct 289whp @198tq with a 57 trim turbo & 450cc dsm injecter on a mustang dyno. Been running like this for year now, with a track time of 11.79@115 with a 1.600 60ft. replacing the head gasket would be good with some arp head bolts. depending on ur hp goal and budget the sky is the limit. stock gsr will make some good hp under 12psi, but u must have a good tune to do it safe and reliable.

 

fair enough but EVERY car we tuned Does not wind up running a stock map sensor cuz i don't put check valves on ****
didn't know you could run a stock map sensor unless you run the boost he's talkin

i didn't really mean NO BOOST AT ALL but i know for a fact you cannot run on stock map sensor over 10psi thats why i said that

but what happens when it moves over to the last column like that what happens when you boost it doesn't right????
i know the car will run but NO BOOST

 

we just had a car @ philly dyno making 385@ 15-16 psi on the stock map sensor, it runs everyday and runs hard.

our racecar pushes around 40psi on a gm 3 bar...

 

Doesn't the Greddy kit come with 6psi? What are you going to use to up the boost?

Bend the wastegate actuator, MBC, or something fancy?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CRX T-Si &raquo;</TD></TR><TR><TD CLASS="quote">Doesn't the Greddy kit come with 6psi? What are you going to use to up the boost?

Bend the wastegate actuator, MBC, or something fancy?</TD></TR></TABLE>

i believe the internal wastegate is set at 9psi, which can be adjusted.
i'm not understanding the second part of your question. what do you mean by use to up the boost?

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by YC Underground &raquo;</TD></TR><TR><TD CLASS="quote">depending on how healthy the motor is u can put some good numbers down/+ a good tuner. replacing the head gasket would be good with some arp head bolts. depending on ur hp goal and budget the sky is the limit. stock gsr will make some good hp under 12psi, but u must have a good tune to do it safe and reliable. </TD></TR></TABLE>

well my hp goal is 220 whp, which i can easily exceed. i just wanna feel good about it when i pass it up
people have been telling me that a 2.6mm hks headgasket wouldn't do me any good. they said the stock compression is fine as long as i'm still under 10. six-hatch said that everyone's blowing the thicker headgaskets, but he never told me how much boost they're running.

also, is my exhaust okay? i have a 5 zigen exhaust system, which i believe is a 2.25 inch outlet. would i need a 3in exhaust because i'll be boosting? my downpipe is a 2.5 to 3 if that matters.

thanks again for the help guys keep em coming.

 

too be honest ive seen mixed reviews about the thicker headgaskets. All the ones my friends have done, and shops that have even installed them, i see them poppin every other week. it's like they don't stay torqued or sumthin?
but either way with just a head gasket the compression prolly won't even make that big of difference to tell, beside it'll run better with higher compression and low boost. If thats all your doing is stayin stock and STAYING at low boost like 12psi or less youll be fine WITH A CONSERVATIVE TUNE

 

conservative tune?

i was thinking aggressive tune. well ****, what other tunes are there? lol

 

bump for help.

would dsm 450s work? i thought they're low resistance and aren't compatible with mine unless i use a resistor box, but i dont know how the hell to do it.

also, i'm guessing i should just stick with the stock compression since i'm staying at 8 or 9 lbs.

 

i ran a stock gsr last year at 10lbs with dsm 450s. all u ahve to do is go to radio shack and get resistors and wire them in homemadeturbo has a nice write up on them. i make about 360whp on a base map which i dont recomend at all but i had no problems just ran it alittle rich.

 

http://homemadeturbo.com/tech_....html
link for injectors

 

thanks!

hey guys... i've been thinking a lot about this and do you think that an 18g is too big? won't it lag a lot and be out of the efficiency range?
i read somewhere that it was meant for higher boost and used with an external wg. i dont know. i forgot if the 18g was a 50 or 57 trim and i can't find anywhere that says it.

is there another turbo that would be better for my application? i mean this is pretty much meant for highway cruises. that's pretty much it. and maybe a few drag races here and there but i doubt it. i'm not that stupid anymore.

i just wanna make more than 220whp . lol. the higher the better but i'm on a budget too

 

that is not all that big of a turbo it is more than fine for what u want to do

 

in the long run, do you think in external wg and ramhorn mani would put out more power?

this log mani is just getting me by for now, but i wanna get more power by airflow by all means necessary and not boost.

i just don't wanna run open downpipe.

need more info guys!