zemon1

OK, instead of putting one big turbo on my 2.8L 1985 Camaro, and getting a lot of turbo lag, i want to put two small turbos on it so that they both spool faster and i can get some good boost. I was wondering if anyone could point me in the direction of information that is up-to-date. I tried looking at the stickies but they are pretty old. I did find some useful information on them though.

I am looking to do a JY/DIY twin turbo setup. The only thing is that i dont really know how much these 2.8L V6's can handle and i dont want to destroy my car. I need information on the constuction of it, the items needed, i know i need a wastegate, the turbos, hoses, an intercooler, but after that it starts getting foggier. I am not going to race this car, except mabye the little punk down the street who thinks his muffler tip and body kit makes his car go faster.

My dad and i are going to fix this car up at his house (Southern USA), and i havent seen the car yet because i am at my house (Northern USA). My dad has been welding since he was 13 and has incredible knowlegde of the internal combustion engine. However he has never really fiddled with turbos and twin turbos.

So if i could be gentle pointed in the direction of some resources, or just your personal knowledge that would be great. I have been researching this Via Google and this forum for a day now, so i have some idea what im talkin about, but not as much as i hope to know when you all are done helping me.

sccavette

I think you would be time and money ahead to find a 3.8 GN turbo motor and just do a swap. I am not sure I would consider a single turbo let alone a twin turbo on a 3.1 unless I went through the motor and built it to hold the boost. However it would be something you do not see every day.

tony_cogliandro

iTrader: (3)

actually you would use a small turbo with a larger one. the small spins faster and the power is almost instant and then the larger kicks in and you have full power. i think that is how the vett does it.
but i have never used them so i may be wrong about all that.
if you use the search button here you will find more than 11 pages of links on that topic.
good hunting.

zemon1

First of all, thank you both for not flaming me!

I did not use search, which i should have, i looked at the sticky and a couple other post and found a lot of old out dated links, so i said enough ill just make a thread.(newbie mistake i guess).

The motor is a 2.8L not a 3.1L, but i may very well get a 305/350 and do it. The only thing is that im not trying to dump gallons upon gallons of fuel into the motor until i want to really go.

The big one little one idea is actully really good, ill have to talk that over with my dad. Do you think a 305 and a turbo 350 trans would be able to hold a good amount of boost? Im not really aiming for like 500rwHp, i just want to be pretty fast, but im also 17 and have VERY limited funds.

i have three motors and three transmissions in question, the 2.8L, 305, and 350. And the stock 1985 sport coupe trans, 350 turbo trams, and 700R4 trans. Which setup do you all think would be cheapest and most effective?

ibmtech

iTrader: (1)

If you are not looking for 500hp then I think you really don't need to twin turbo charge it. It sounds a little overkill. I actually think the idea of getting a T-Type or GN motor and doing a swap would be a much much better idea. Then engine is already setup for the turbo. You might have a few conversions to do, just ensure you get the computer and the wiring harness.

tony_cogliandro

iTrader: (3)

go to a vett board - not sure which one - but it was there that i saw the big little setup. it might even be standard for them, not sure. but it was on the vett that i saw the setup.
and if vett has it - then gm probably designed it.
also look on ebay for dual setups. not to buy - but just to see what is out there. your probably dont want to get some junk off ebay. you want to be able to look at it - it will be spinning pretty fast and you want to see the quality.

zemon1

That is called a sequential setup BTW. I will look into those motors. Really i think i just want a twin turbo to say i have it. And beast my friend in his car. he has a fourth gen.
and because people will look at my V6 and be like ok, thats cool. then ill just rip the tires and smoke their asses

project89

iTrader: (1)

ps dnt mind the 0's my o key barley w0rks lma0
u d0 n0t need t0 d0 twins, a single sized prperly will sp00l up fast and make g00d p0wer.
a single t3/t4 hybrid with an ar 0f .63 n the hotside will s00l fast and be cabable 0f making 400 hp.

and was the first turb0 i ran on my 2.8

my new v6 put d0wn 268rwhp and 370 rw tq @ 10psi with a t3/t61 @ 10 psi with a messed up ignition system i.e i only had 8* of ttal ignitin timming and it still put d0wn th0se numbers

any ?'s just ask

zemon1

ok i have stock everything on my 2.8L as far as i know (just got it)
and i have some knowledge but not much.

please explain this. i understand the spooling thing, but not the technical junk that seems so pivitol lol. Will my 1985 2.8L motor be able to handle all that? 400rwhp is alot, but im not going to be using it all the time. how bad will this beat down the motor?

project89

iTrader: (1)

u have an 85 motor ? thats a carbed motor isnt it? if it is i wouldn't touch it with a 10 ft p0le, the earlier motors carbed have a small journal crankshaft and are very weak.

a stock v6 m0t0r (fuel injected ones) can handle 400 hp and spin upto 7k rpms without issues

zemon1

any suggestions on intercooler, wastegate, fmu, or stuff like that, what was your setup, do you remember?

And i dont understand exactly what turbo im looking for. ive only been learning this for a day, and i dont want to be too annoying, but i just dont know.

project89

iTrader: (1)

yeah the ? is hw much money do u want to spend, u want ebay stuff or do u want brand name stuff.

if u lok in the v6 section i have a sticky at the top that shws my first diy/jy style build

zemon1

are you daves12secv6? i think it was????

project89

iTrader: (1)

yeah didnt have net fr a while and couldnt get my old email and **** back to get my account back, s i have this name now

zemon1

OH MAN!! You are the reason I even THOUGHT of putting a turbo on my 2.8L V6!!

Your thread is what i was goin to use to assemble it.

I would like brand name but i have like no money, so im going with the cheapest effective system possible.

zemon1

via Wikipedia "The 2.8 V6 became fuel-injected, raising power from 112 hp (84 kW) to 135 hp (101 kW)." about the 1985 camaro
http://en.wikipedia.org/wiki/Third-g...et_Camaro#1985

so there it is, it must be fuel injected. How much RWHP did you get with that sticky thread setup? like i siad i just want to be able to beat down the random snot nose kid whose mommy and daddy bought their eclipse, body kit, and muffler tip that magically gives more HP. 450RWHP is cool, but just uneeded for me for this car. My I-ROC im going to buy after this one, thatone is going to be a monster.

project89

iTrader: (1)

just f0ll0w that thread, and pst any ?'s u have in it.

i dnt knw powerwise i never had that setup dynoed,but its way more then enough to beat up n some h0ndas, gt mustangs etcs

zemon1

awesome, right now i am looking up the parts. I have never seen the engine, nor has my father, so im really hoping that my engine is in good enough shape. would that set up be that same pretty much for a 305? will my 24 year old stock trans be ok?

project89

iTrader: (1)

keep the bst dwn and u should be ok,but u really need t find ut what cnditin the motor and trans is in first befre u do anything

zemon1

yeah, my uncle does not seem to be in any hurry to give us pictures... kinda making me mad, actully it really is, because i need to save money for the interior, and i dont even know what in the interior needs fixed...reall bothering me.

I am a compulsive excel speadsheet maker, so i enjoy finding these parts and using excel to tell me my total prices and stuff like that.

I really do thank you for your help, i really do.

and im having trouble finding this: "36mm external gate also off ebay.i recomend getting one with a 3.63 psi spring" i see alot of 35/38MM and 8PSI springs

snowman383

what project is saying it would be better if it is a 2.8 mpfi motor..this might help you out also not meaning to change subject..project would it make any diff to port the heads on the 2.8,,he also gave me the idea to do the turbo on my car

zemon1

what exactly does mpfi mean? x x fuel injection?

project89

iTrader: (1)

35/ 0r 38 mm gate is fine, the 8 psi spring is fine if thats the lowest u can find. at suck a low boost level u will have a hard time hurting the engine unless it i s seriusly lean on fuel


snow man porting the heads will help,the head sn the 2.8/3.1 and 3.4 rwd mtrs are all the same

zemon1

so at suck i will hurt the engine unless i run really lean? with an 8psi spring?

OR does that say at suck, which is a low boost level, it will be hard for me to hurt the engine unless i am running really lean. and i found a site with a 3.63, and its only $69.99

Im about to look on just good ol' google and look for the 35mm 3.36psi

snowman383

i think he meant to say at such a low boost it wont hurt anything

turbota82

iTrader: (2)

I found a local parts yard with two turbo grand prix in it. Do some research and let me know what you need.

zemon1

snow: Thank you, i wasnt sure which one of the two statments that was.

Turbo: is aiken near Charleston? Charleston is where the car will be when we are working on it. Mount Pleasnt Actully.

zemon1

how does this turbo kit look to you, any opinions??

http://cgi.ebay.com/ebaymotors/Turbo...1%7C240%3A1318

project89

iTrader: (1)

lil expspensinve fr what ur getting cause u w0nt use the manifld, but thats the right turb0 and it c0mes with an internal gate s0 u woulndt have t get a external wastegate

if u l00k arund n ebay u can get the kit cheaper cause it w0nt have the stuff u d0nt need

project89

iTrader: (1)

http://cgi.ebay.com/ebaymotors/Unive...QQcmdZViewItem

zemon1

38MM Wastegate :
All Stainless Steel hardware, Mating weld flanges are 304L.
Spring Size is 7 PSI.

how hard is it to change that spring? or can you not even change the spring?

project89

iTrader: (1)

the 7 psi spring is fine, the boost level is so low u wouldnt hurt the motor unless u were seriously lean, 7 psi will run perfect if u swap the stock injectors for 19 pound injectors with th e stock ecm

Burgundy Bomber

I run a Industrial Injection 66mm/71mm 14exhaust turbo... but that's on my tow rig, lol.

you can find a holset style turbo super cheap, I sold my hx 35/40 hybrid for 500 bucks.
your looking at major internal work, the T-bird turbo coups had steel cranks and cams and if you turbo'd a say... Ranger motor non turbo they would smoke the sizzle and burn to the ground. i guess same principle.
could you put a lil whipple on there easier?

project89

iTrader: (1)

wow dude dont give somone advive when u have no clue about t he motor in ?.

the factory motor needs no internal work in order to be turbocharged,

stock bottom end motor here making over 300hp and 400ftlbs

zemon1

ok just got news my engine runs but is in crummy condition, so i will be swapping with a 3.4L i think he also said that i probably have a 200R4 trans, or a 700R4

Burgundy Bomber

Ok DUDE,
glad to hear that the 2.8 is such a good motor. in my experience the gassers with turbo's came out with better internals than the S.O counterparts, I was tossing out an idea... i was wrong, thank you for being able to rectify that... calm down... I'm stepping away from your attitude slowly....

zemon1

bomber, that dude is cool as ****, i believe he was mearly pointing out that you wernt correct in your thought, thats all, he wasnt flaming

project89

iTrader: (1)

the 3.4 is a good swap, u will need to reuse ur 2.8 intake, and front timming cover, u dont have a 2004r its a small bellhousing 700r4

turbota82

iTrader: (2)

About 2.5 hours away.

zemon1

so i have a 700R4, isnt that a pretty raw trans. also this is a 1984, i just found that out aswell. did the 2.8L 1984's not have the gfx and had the nose with the three rectangle slots that just kill the look. i could still use the trans on a 3.4L right?