a few questions about putting on a turbo kit

stuffy1256 · 02-13-2005, 09:41 PM

Im helping a friend of a friend install a turbo kit on his 95 GS. He got an ebay kit that i read on here is a good kit. a few questions:

what is the stock injector cc on the GS, what psi is are they good to, and will stock GST injectors fit?

Its been a while since ive been in the DSM world, what exactly is a Missing link and is it necessary?

what diameter intercooler piping do you suggest? 2.25?

FMU and SAFC II, are both needed and what will be the difference if i dont have one or the other?

Sorry if some of these are stupid questions, i never got really into modding my GST and the NT -> turbo stuff is weird to me. Thanks for the help.

edit: one more question,

whats the compression ratio on the 420a and how many psi/fwhp can it handle?

selmerguy · 02-13-2005, 09:50 PM

ok if he got the kit off ebay then it is probably from mike at the street source. i don't know what cc the stock injectors are but unless you are running 15psi or more you don't have to mess with them. the fuel system you need is a walbro 255 fuel pump(ebay 90 bucks) and a 12:1 fmu. (got my vortec off ebay for 75) that will do it for fuel and if you are on stock internals i would'nt run more then 6 or 7 psi of boost. as for i/c pipes any where between 2 and 3 inches seems to be popular.

and i think the gst injectors fit in the 420a

good luck.

stuffy1256 · 02-13-2005, 09:54 PM

Quote:

Originally Posted by selmerguy

ok if he got the kit off ebay then it is probably from mike at the street source. i don't know what cc the stock injectors are but unless you are running 15psi or more you don't have to mess with them. the fuel system you need is a walbro 255 fuel pump(ebay 90 bucks) and a 12:1 fmu. (got my vortec off ebay for 75) that will do it for fuel and if you are on stock internals i would'nt run more then 6 or 7 psi of boost. as for i/c pipes any where between 2 and 3 inches seems to be popular.

and i think the gst injectors fit in the 420a

good luck.

The kit is the street source one.i knew he would need a 255lph fuel pump and thats good to hear the stock injectors will be ok. you answered my edit before i even posted it

siueclipse · 02-13-2005, 10:08 PM

Quote:

Originally Posted by selmerguy

ok if he got the kit off ebay then it is probably from mike at the street source. i don't know what cc the stock injectors are but unless you are running 15psi or more you don't have to mess with them. the fuel system you need is a walbro 255 fuel pump(ebay 90 bucks) and a 12:1 fmu. (got my vortec off ebay for 75) that will do it for fuel and if you are on stock internals i would'nt run more then 6 or 7 psi of boost. as for i/c pipes any where between 2 and 3 inches seems to be popular.

and i think the gst injectors fit in the 420a

good luck.

dont listen to this kid.. he has no idea what the #### he is talking about

siueclipse · 02-13-2005, 10:12 PM

Quote:

Originally Posted by stuffy1256

Im helping a friend of a friend install a turbo kit on his 95 GS. He got an ebay kit that i read on here is a good kit. a few questions:

what is the stock injector cc on the GS, what psi is are they good to, and will stock GST injectors fit?

Its been a while since ive been in the DSM world, what exactly is a Missing link and is it necessary?

what diameter intercooler piping do you suggest? 2.25?

FMU and SAFC II, are both needed and what will be the difference if i dont have one or the other?

Sorry if some of these are stupid questions, i never got really into modding my GST and the NT -> turbo stuff is weird to me. Thanks for the help.

edit: one more question,

whats the compression ratio on the 420a and how many psi/fwhp can it handle?

stock injectors are about 235cc. stock injectors will barely handle 10lbs of boost. stock gs-t injectors wont work, they are peak and hold injectors and the GS/RS has saturated injectors. don't bother trying to get them to work because all you will do is fry your injector drivers in the ecu. a missing link is not needed on the 95 because it wont suffer from fuel cut. 2.25" piping is fine. rather than getting an FMU, go with a Vortech SFMU for greater control of the fuel system. the compression stock is 9.9 i believe.. can't remember for some reason.

The stock 420a block can't handle more than 9-10 pounds of boost. if the motor is built, it will handle anything if you tune it right.

selmerguy · 02-13-2005, 10:27 PM

he is much smarter than me listen to siueclipse. sorry about the plethera of missinformation. i was told the stock injectors could take 15 psi with a fmu. but he is probably right. the sfmu is nice if you want to spen the cash.

DSM-ZERO · 02-14-2005, 01:12 AM

stock C/R is 9.6:1
I would suggest 2.5 I/C piping
HRC says the N/T inj size is 190cc
The most boost I have ever ran on my 420a is 11.3psi BUT I do not suggest doing it

XMasta19 · 02-14-2005, 03:24 AM

Were you running that as a daily driver setting? Would it be bad if you had like a DSBC set for 7psi low, and your high setting at like 11 or 12psi just for maybe a track run or something?

miamieclipse · 02-14-2005, 07:36 AM

Quote:

Originally Posted by XMasta19

Were you running that as a daily driver setting? Would it be bad if you had like a DSBC set for 7psi low, and your high setting at like 11 or 12psi just for maybe a track run or something?

Yes, if you know the limit is X amount, I ask why must you push it and run X + 5 or whatever it may be. You will end up needing a rebuild and it will be a pain in the ass just because your a douche and wanted to push the envelope.

WHite97RS · 02-14-2005, 10:25 AM

As far as fuel and air managemtn go i would check into the megasquirt system, you can do more withit than a SAFC,II , go over to 2GNT.com. Thats what im gonna go with in the spring when i go turbo.

DSM-ZERO · 02-14-2005, 02:13 PM

No what was happing was my watse gate was set to .6bar and at WOT in high rpm it was creeping to .8bar
but I fixed it and now it holds a solid .6bar

BUT i did run it at .8bar for a week before I fixed it

SnoopySLR · 02-14-2005, 06:49 PM

Quote:

Originally Posted by siueclipse

stock injectors are about 235cc. stock injectors will barely handle 10lbs of boost. stock gs-t injectors wont work, they are peak and hold injectors and the GS/RS has saturated injectors. don't bother trying to get them to work because all you will do is fry your injector drivers in the ecu. a missing link is not needed on the 95 because it wont suffer from fuel cut. 2.25" piping is fine. rather than getting an FMU, go with a Vortech SFMU for greater control of the fuel system. the compression stock is 9.9 i believe.. can't remember for some reason.

The stock 420a block can't handle more than 9-10 pounds of boost. if the motor is built, it will handle anything if you tune it right.

ok... first he might be smarter than you, but this is just all stupid

Stock injector size is 190cc. Stock compression is 9.6:1. I don't know about the missing link not being needed on a 95. And there is nothing wrong with our block. It can handle more than 10psi, but you have to make sure your getting enough fuel in there. The reason our motors blow up over 10psi is because we detonate too easy with that much pressure. More fuel or lower compression will help that. I'm not in any way saying not to get forged low compression pistons, just saying thats not why it blows.

DSM-ZERO · 02-14-2005, 07:07 PM

I know 95's dont need a mising link because
the 95 is an OBD1 and the OBD 1 dose not read positve manifold pressure or "Boost" so it will not drop voltage
BUT
getting one still would not be a BAD idea there cheap and any safty device you put on your motor is not a bad thing

GotSome-Turbo · 02-14-2005, 10:53 PM

just to throw a little piece in here, I just got my star stage 1 tonight(oh yeah

only took 20 days to get here :thumbdown ) and the instrucions say the "little black box" isn't needed for the 95-96. Just thought I's throw that in there.

and yes the cat likes it too, lol

DSM-ZERO · 02-15-2005, 12:00 AM

I Love Cats
Ut. Topic.

SnoopySLR · 02-15-2005, 08:03 AM

hahaha... your cat's cute. I'm almost wishing I would have only got the stage one now... there's so much I want to replace now... ah well

CrazyClipse · 02-15-2005, 09:15 AM

Quote:

Originally Posted by SnoopySLR

hahaha... your cat's cute. I'm almost wishing I would have only got the stage one now... there's so much I want to replace now... ah well

Thats what I did, biggest mistake ever. I threw so much money away from buying a pre made kit then upgrading 80% of the parts. Then again, when we bought our kits we all didnt really know any better.

Good luck with your install sir!