3.4l turbo

[oxrabidus]

I am putting together a mild 3.4l single turbo, i am using a world class t5 from a 4th gen camaro, its goin into my 86 camaro. i dont want to pass 290-300ft/lbs of torque, now considering i have roller tipped rockers, magnum pushrods, stock cam with a 2.5" dynomax cat back, do you think 4-5psi will take me to just about there? i noticed that normally on a turbo engine the HP will be more than the torque, so i would guess id like to have like 310 hp, with around 280-290ftlbs, just to save the trans really... cause i dont have the money right now to get a better one and i like manual trans better... and would stock injectors suffice or should i get bigger ones? suggestions as to what needs to be upgraded are needed too, im rebuilding the bottom end with hyper pistons and maybe some arp rod bolts, but outside of that it will be stock 3.4l borwd out .020... i have read that these engines can handle quite a bit of power, but like i said my main concern is not to destroy the world class t5...
thank you!

[MidnightriderZ24]

the only reason a turbo car will have more hp is due to a small turbo or smaller turbine on a bigger turbo. a w/c t5 will handle more power if u dont drive like a f'in idiot. for injectors go with 3800 series 2 s/c injectos, stock will run out of fuel at .5 psi lol.

[oxrabidus]

well according to the person im buying it from it is a smal turbo for the 3.4l... ill look into those injectors... so 5lbs should be enough to get me there? and define "driving like an f'in idiot!" i dont want to have to baby it really, i mean i know how to shift properly and when to shift while racing but if cant do that then why build theengine up at all hehe...

[TiredGXP]

Probably closer to 220 hp with that boost level and a basically stock 3.4 engine.

Check out this site http://www.squirrelpf.com/turbocalc/index.php for some turbo calcs. This gives results very consistent with the math in Garretts Turbo Tech 101-103 webpages http://www.turbobygarrett.com/turbob...o_tech101.html

[oxrabidus]

wow... well how much do you think it will take to get to 275 hp with a fairly stock 3.4l considering i get a nice cam...

[TiredGXP]

Just so we're clear, are we talking about an iron head 3.4 or a Gen 3 3400?

Here's a guess based on the iron head 3.4:



The calculations depend heavily on VE and BSFC (BSFC @ .51 might be a bit optimistic for the iron head. My LS4 calculates out to ~.48, but it varies with RPM). If you have actual VE numbers, a rather significant difference will result, I've used numbers that I think are reasonably close. If no IC, then you won't have the IC loss, but temps will be much closer to 200*

[RedZMonte]

wow... well how much do you think it will take to get to 275 hp with a fairly stock 3.4l considering i get a nice cam...

7-10psi.. prob. gunna want 42# injectors for that boost level.

S

[oxrabidus]

well im gonna use water/meth injection probably, to try and keep the pipng lenght down, i heard that reduces throttle response... plus it is easier to do than a bunch of piping...
but its an iron headed 3.4l... if transmissions were cheap, i would go and build a 3500 hybrid with a turbo i hear those are nice!

[MidnightriderZ24]

7-10psi.. prob. gunna want 42# injectors for that boost level.

S

not at all. i made 358 wheel horse on 28# injectors at 98% duty cycle.. lol. go with a holset hy35, big power out of one cheap too. drrivin like an idiot imean full throttle foot on gas between shifts.

[TiredGXP]

Yeah, 42# would be oversized. 32# injectors should keep you at a safe 80% IDC.

[oxrabidus]

well i dont know much about turbo stuff or injector duty cycle and stuff... im new to all this gig, i am coming from a carb v8 background hehe..
but i dont drive like an idiot, not like that anyways...
so 28# injectors, and around 8-10 lbs of boost?

[MidnightriderZ24]

its kinda on the pushing it side. i only got 28#'s due to only planning on running 6 psi. but i got the itch after how much the 3400 loves boost, and cranked it up. 32# will be a safe bet for your goals. look up a holset hy35, research it, buy it. a stock 3.1/3.4 would love this turbo.

[oxrabidus]

well i already made the deal with the guy to get the turbo, hes giving me the turbo, the crossover pipe, the one manifol (because i would use the stock driver manifold) and the downpipe, all for really cheap... so yeah the most expensive components right there, (at least that i know of)...
the MAIN reason i wanna do this is to beat a lot of the ricers, but also to beat my cocky friend, he drives an 09 mustang v6 that mommy bought him... and i wanna make sure i win... hehe

[RedZMonte]

well im gonna use water/meth injection probably, to try and keep the pipng lenght down, i heard that reduces throttle response... plus it is easier to do than a bunch of piping...
but its an iron headed 3.4l... if transmissions were cheap, i would go and build a 3500 hybrid with a turbo i hear those are nice!

Do you have E85 where you live? if so ditch the meth injection and run larger injectors, pump and e85.

[oxrabidus]

man i wish... theres only on e85 pump in florida and its 6 hours from my house! i looked into making my own but i would be too expensive... so the water/meth injection would be the next best thing for me...
i just thought about this... is there any way to change te exhaust ports to more like d ports? like shape them up a bit?