Turbo Question

[DRA-GON]

T3 Garrett with a .42 / .48 is just about the right size for 2.4L cars correct.

[Oldsman]

that would do a decent job.

[DRA-GON]

I would be happy with around a total of 200HP so I am looking to get 50hp or so form it.

[Spy]

Originally posted by DRA-GON@Oct 6 2005, 11:05 PM
I would be happy with around a total of 200HP so I am looking to get 50hp or so form it.
Quoted post

gmsupercharger kit... reliable, easy to install, and a few minor bolt ons... easy 200hp to the wheels plus.

[Spilner521]

Originally posted by DRA-GON@Oct 6 2005, 12:11 PM
T3 Garrett with a .42 / .48 is just about the right size for 2.4L cars correct.
Quoted post


that's what i'm running. it'll stay out of boost when you go easy on the gas and spool quick when you want it too. easy 200hp with the proper fuel mods and intercooler.

[nguyen187]

yeah that should spool up nicely!

my t3/t4 takes a bit longer around 3500 if that helps!

[DRA-GON]

cool I am just looking for now cause I don't have money to start building on.

[keepitsimple]

what are u guys running for boost? u using a stock motor?i rebuilt mine with eagle rods and wiesco pistons, how much boost u think itll take?

[keepitsimple]

wow nguyen187, i was looking at ur mods, ur engine and my engine are almost the same, i cant remember my piston size tho i think its the next stage up from stock, but it would be awesome if u could let me know what boost ur running and how the engine is taking it? im not goin with the emanage im hopin to find an safc to do the job fuel wise

[Spy]

Originally posted by keepitsimple@Oct 24 2005, 02:08 AM
wow nguyen187, i was looking at ur mods, ur engine and my engine are almost the same, i cant remember my piston size tho i think its the next stage up from stock, but it would be awesome if u could let me know what boost ur running and how the engine is taking it? im not goin with the emanage im hopin to find an safc to do the job fuel wise
Quoted post


I'm running a built motor myself, 9.5:1 compression, JE pistons (stock bore), eagle rods, balanced rotating assembly, stock crank pulley, and some other cool nonsense.

personally I'm running 7.5lbs, since that's what it's quasi tuned for at the moment. The one thing you have to be careful about is the stock headgasket. But you you can definitely squeeze out some 15psi runs every now and then at the track. :)

.020 overbore on your pistons?

I know my motor is taking boost abuse nicely, even though packaging wise I could've made it prettier. If you're not going to run too much boost, around 5-10lbs, you can get away w/ the GM Performance reflash, 320-370cc injectors, and an adjustable fuel regulator.

Personally I'm using 440's and I had to get an S-AFC so I won't be burping so much damn fuel out the back, spitting flames is scary as poop when you only have a downpipe.

Definitely look into boost if you want to make your car fly.

[keepitsimple]

sweet info thanks ya i have a copper head gasket but will be doing some head work before the turbo even gets put on, hopefully a port and polish and i have the cams for the secret cam swap, junk yard for 50 bucks, might pick up the 90 -94 2.3 exhaust cam tho it lifts even more then the 95. but ya i didnt reduce the compressin so i was worried about that part of it. i dont know what the gm reflash is tho?

[keepitsimple]

what are you turbo 2.4's getting for 1/4 mile times at the track? and how much boost u run?

[Spy]

Originally posted by keepitsimple@Oct 26 2005, 03:21 AM
what are you turbo 2.4's getting for 1/4 mile times at the track? and how much boost u run?
Quoted post



look at my sig.. that was at 7.5lbs.... my timeslip is posted in the track/racing section.. there's a post on it in there.

[Spy]

Originally posted by keepitsimple@Oct 24 2005, 03:23 PM
sweet info thanks ya i have a copper head gasket but will be doing some head work before the turbo even gets put on, hopefully a port and polish and i have the cams for the secret cam swap, junk yard for 50 bucks, might pick up the 90 -94 2.3 exhaust cam tho it lifts even more then the 95. but ya i didnt reduce the compressin so i was worried about that part of it. i dont know what the gm reflash is tho?
Quoted post



GM Performance Parts has a supercharger out for 99-02 n-body and j-body cars equipped w/ the 2.4L Twin Cam (quad) motor. Part of the kit is a certain PCM recalibration. The dealership does this recal (reflash). Basically it sets up your PCM w/ fuel maps and peramaters that allow the car to run safely with boost. The updated programming is set up for a 2bar map sensor (reads up to 2bar about 14lbs of boost), and 320cc injectors (which can be pushed for even bigger 370s w/o any noticeable burping, harsher idling side effects. )

I had a dealership do the recalibration on my car, but I'm also running 440cc injectors along w/ an S-AFC from Apexi, AEM wideband, Casper Adjustable fuel regulator for finer tuning.

[Fast Eddie]

Originally posted by keepitsimple@Oct 24 2005, 09:23 AM
sweet info thanks ya i have a copper head gasket but will be doing some head work before the turbo even gets put on, hopefully a port and polish and i have the cams for the secret cam swap, junk yard for 50 bucks, might pick up the 90 -94 2.3 exhaust cam tho it lifts even more then the 95. but ya i didnt reduce the compressin so i was worried about that part of it. i dont know what the gm reflash is tho?
Quoted post



The secret cam swap IS the 93-94, LO, exhaust cam, '95 is only the intake for the PS pump, unless you lose PS ;)

But I've started wondering how these cams will work under high boost. DO they overlap too much?

[keepitsimple]

ya i have the 95 intake and exhaust, the intake doesnt increase much but the exhaust lift up alot, but the 90 -94 does even more, or maybe its only 93-94 like you said but its more than the 95, still they should both work, i think im puttin the 95 on the i dont want to loose too much low end, any suggestions would be great tho i need al the info i can get.

so what u guys think?

[Fast Eddie]

The 95 exhaust is .360" lift and the 90+ is .375", both have 200*. Stock is 187* with .346" lift.

If your going with boost just get one that is properly sized and you low end should be OK.

[Spy]

Originally posted by Fast Eddie+Oct 26 2005, 03:17 PM--><div class='quotetop'>QUOTE(Fast Eddie @ Oct 26 2005, 03:17 PM)</div><div class='quotemain'>Originally posted by keepitsimple@Oct 24 2005, 09:23 AM
sweet info thanks ya i have a copper head gasket but will be doing some head work before the turbo even gets put on, hopefully a port and polish and i have the cams for the secret cam swap, junk yard for 50 bucks, might pick up the 90 -94 2.3 exhaust cam tho it lifts even more then the 95. but ya i didnt reduce the compressin so i was worried about that part of it. i dont know what the gm reflash is tho?
Quoted post



The secret cam swap IS the 93-94, LO, exhaust cam, '95 is only the intake for the PS pump, unless you lose PS ;)

But I've started wondering how these cams will work under high boost. DO they overlap too much?
Quoted post
[/b]

I really doubt it's going to be that detrimental to a boosted car. How many 2.4's are really going to be pushing above 12lbs of boost?

I have had no detrimental effects from the cam swap, obviously.


<!--QuoteBegin-Fast Eddie@Oct 26 2005, 04:24 PM
The 95 exhaust is .360" lift and the 90+ is .375", both have 200*. Stock is 187* with .346" lift.

If your going with boost just get one that is properly sized and you low end should be OK.
Quoted post
[/quote]

[keepitsimple]

i dont know what detrimental and all that stuff is i think ill get teh 90 + exhaust cam just cause it opens more, and with boost, itll help me spool faster, im hopin to run 15 pounds steady but i have to do some more head work to do that,

[Fast Eddie]

That's kinda scary. You are going to run high boost numbers but don't know about overlap in the cams??!!

[Spy]

Originally posted by Fast Eddie@Oct 28 2005, 02:20 PM
That's kinda scary. You are going to run high boost numbers but don't know about overlap in the cams??!!
Quoted post


not a single goddamn thing..

what's a cam?

[Oldsman]

the secret cams have had up to 18 psi on them and HO cams have seen 22 psi.

the secret cams work great for 5-10 psi.

when i build my second 2.4/2.3 i am going with custom turbo grind. only due to the fact of very high psi and want maxinum hp.

[keepitsimple]

thanks

[keepitsimple]

currently my plan is to go to go to gm and have them do the reflash, do they include the injectors with the reflash or do i get them? after ill then install a fpr and only run 7.5 lbs to start with my stock cams , then after i manage to get the money, ill buy a new pump , safc, and bigger injector, and the cam swap, then run the high boost.

with the gm reflash the computer should be able to handle the 7.5 lbs right,?? the new fuel maps should be able to increase my fuel w/ out an safc, or am i wrong,

if this sounds likea bad idea let me kno, if it does sound good, anything i should do before, or need to do?

thanks

[Spy]

Originally posted by keepitsimple@Oct 30 2005, 06:30 PM
currently my plan is to go to go to gm and have them do the reflash, do they include the injectors with the reflash or do i get them? after ill then install a fpr and only run 7.5 lbs to start with my stock cams , then after i manage to get the money, ill buy a new pump , safc, and bigger injector, and the cam swap, then run the high boost.

with the gm reflash the computer should be able to handle the 7.5 lbs right,?? the new fuel maps should be able to increase my fuel w/ out an safc, or am i wrong,

if this sounds likea bad idea let me kno, if it does sound good, anything i should do before, or need to do?

thanks
Quoted post


You need to buy the injectors yourself, and the 2bar map yourself. It's about $100 for the reflash at the dealership, and hopefully you have a competent one nearby, because I had to go through 4 dealerships before I found one that knew what I was talking about. I'd also advise to get a wideband o2 sensor, so you can keep an eye on your air/fuel. Running more then 10lbs of boost constantly it IS advisable to upgrade the fuel pump, and get an S-AFC to fine tune things. Don't forget to get new plugs that are 1 to 2 steps colder then stock.

[keepitsimple]

awesome thanks for the info, def. need to know. how do i get my hands on a 2 bar map?

[Spy]

Originally posted by keepitsimple@Oct 31 2005, 03:12 AM
awesome thanks for the info, def. need to know. how do i get my hands on a 2 bar map?
Quoted post


dealership parts counter.... I believe a couple part numbers for it are floating on j-body.org

or you can also try ebay.