a few turbo ?'s

auto_x5.0

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Well I was bored today so I started looking into forced induction for my dad's car. I soon found myself looking into turbocharging. Now I know some of the basic stuff. But is there anybody who can tell me what/who to stay away from in turbocharging. And I started talking to one of my friends and her dad does custom turbo fab and I was talking to him about doing a custom single turbo system for the 5.0. Is it safe to run like 5-10psi on a stock block and stock internals with about 98k on them?
 

blown98gt

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turbos are a little more efficient than say a supercharger and 5.0 stock blocks have seen up in the 500 range but i'd shoot for more around 400-450 with a good tune. keep in mind that boost is a measurement of restriction, so it's possible for you to make more power with less boost if cooler air is going into the engine so 5-10 lbs of boost for you could be completely different than what 5-10 lbs of boost makes hp wise for me.

use the search button there are tons of turbo threads =) i'll help you as much as possible with your questions. But again like i said it's hard to answer someone's question like "can i run 10lbs of boost on a turbo" well we can't tell you exactly what hp numbers you'll put out with 10lbs and it might take you more or less to get a desired hp number... just keep that in mind
 
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auto_x5.0

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Right now Im personally not looking for numbers I just wanna know the basics. If I do this, Im building from scratch, I dont have the money to spend on a say a hellion kit, but I do have a connection to a turbo fabricator and some spare turbos. I just need to know what exactly I need to do and keep an eye on for an efficient turbo system and what I should upgrade on my stock 94 Cobra motor to help with making this efficient. If that makes any sense at all.
 

GTStang98

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basically you will have to change your MAF and intake depending on how you have the turbo set up. and probably your fuel system will have to be upgraded as well. other than that, you might want to run an air to air intercooler and run moderate boost without having to worry about anything but keeping rubber on your tires.
 

blown98gt

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like GTstang was saying you'll need to change your MAF to a blow-thru MAF all info on that and why you have to change can be found here.
http://sn95forums.com/index.php/topic,37141.0.html

you will need atleast 42lb injectors, i'd recommend going with a AFM inline pump kit because with a svt fuel pump it can support 55lb injectors. i'd also recommend going with a fuel rail kit. I'd recommend going with an intercooler probably a treadstone or something along those lines no ebay knock off intercoolers. You'll need to run a bov obviously something like tial is a great choice but anything from greddy to tial to anything will be fine. since you are building a kit i'd recommend getting a full oil line kit which has all the hardware to plumb for the oil and has the oil flange for the turbo.

you have to basic parts of the turbo hot side and cold side. hot side is headers to turbo(s) these pieces can vary depending on single turbo vs twin but all piping between turbo and intercooler is hot side and intercooler to intake is cold side. The cold side has your maf in it. actually piecing/building a turbo kit isn't the hard part it's the downpipe to exhaust that causes the most issues because of K-member. if your friends dad has been doing turbo kits or what not you should be fine because he should know how to build a turbo kit. there are a few places that sell just the hot side piping for our cars which would require you to have a downpipe made and the cold side but might be something for you to think about

if i were you i'd say a B&G kit might be a good places for you to start and not fool with making your own kit
 
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auto_x5.0

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Yeah the guy that is helping me build turbos alot, he's main fabricator for Midwest Diesel and he also builds them for gas cars on the side. So the only thing is I have no idea about turbos, superchargers I understand. Turbos just look like a bunch of pipes and I just need to get an idea of who to stay away from and who the best ideas would be. And how exactly do you tell how much boost a turbo will make? Will a garret t3/t4 hybrid do the job I'm looking for?
 

GTStang98

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you need to match the size of the turbo to your horsepower goals. you dont want a big huge turbo if you plan on running low boost and not going for like 500 hp. i'm getting twin 57mm garret t3/t4s for my turbo setup. if your doing a single turbo you would want a little bit bigger turbo of course. but its important to match turbos to the horsepower goals so that you can run the turbo at its peak efficiency.
 
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auto_x5.0

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How did you figure out that those turbos would give you the numbers you were looking for?
 

GTStang98

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my tech guys at the performance shop told me that those would be the best. but i have done some research on the turbos and they do have to be matched and the t3/t4 garrets spool really fast which is good for a turbo system. turbonetics has some good info on their website for deciding what size turbo to go with. i'd check that out.
 
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auto_x5.0

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I will check that out and see which one would fit my system and what number's Im looking at getting.
 

El_Diablo

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if your serious you should get a book called maximum boost by corky bell, its about $40 or so but well worth it
 
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auto_x5.0

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El_Diablo said:
if your serious you should get a book called maximum boost by corky bell, its about $40 or so but well worth it
I may have to look into that, thanks
 

blown98gt

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auto_x5.0 said:
Yeah the guy that is helping me build turbos alot, he's main fabricator for Midwest Diesel and he also builds them for gas cars on the side. So the only thing is I have no idea about turbos, superchargers I understand. Turbos just look like a bunch of pipes and I just need to get an idea of who to stay away from and who the best ideas would be. And how exactly do you tell how much boost a turbo will make? Will a garret t3/t4 hybrid do the job I'm looking for?

it's easy, exhaust gasses go into the turbocharger and spin it, witchcraft happens and you go faster. lol

what more is there to know? lol T3/T4 are easy to explain to, it's just a T3 which is a smaller exhaust housing with a bigger turbo impeller the T4 side.. so basically it builds boost faster and can usually make some decent power.. i'd say a 57mm turbo is a decent size turbo for twins, if you are looking for a single turbo i'd recommend a Masterpower 66 they are good to about 550 hp so you have room to grow and if you max it out or build a block you can always upgrade to a Masterpower T70 (good to 650 hp) or T76 (good for over 750 hp)
 

El_Diablo

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most guys run a t70 with a stock 5.0...... thats what i'll be running, for a stockish motor use the .68 a/r
 

forcefedhatch

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yup t70 or a nice large holset like mine. with a 5.0 its much easier to make a kit cause you can flip the headers, but... there are alot of variables to it. if you go single you will need a t4 not a t3/t4 that exhaust housing may be too small and acually be restrictive on the exhaust.. a true t4 will be great like someone had mentioned befroe the masterpower t70 with the .68ar t4 housing is the basic easy setup for our cars.. depends on your goals for hp, and how much you have to spend i have around 800 in my kit and i will be in the mid 400 to high 400 area but i have fabbed it all up my self and have built a few before this one..(hondas etc. lol) so i know what to look for and not to.. but see what power you want and ill assume since you have access to a diesel turbo then get the serial numbers and heck the compressor maps and see if the efficiency range will match what you want to make in power.. i have a holset he351vgt since it is vgt i can set it to spool at 1500 rpm or 4000 lol so i kinda picked it because it is good for 650 whp in efficiency range for a gas motor... and i can select my converter and transbrake settings better if everything is adjustable it helps to have some much loved dynotime to tweak it all in as well... so how much do you want and what do you have access to and go from there lol...
 

ademily87

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hope you have good will power. No matter how much boost you run, you're gonna want more. Especially if you can adjust the psi with the turn of a knob. I started off at 11psi in my turbo coupe after getting the adjustable boost controller and then it went to 14psi, then 15psi, then hey what the hell, 17psi and look at what I have now. A turbo that blows oil into my intake lol Its a pretty tough itch to not scratch. But then again the cars not even intercooled and it has 183,000 miles on the stock motor and turbo and everything else lol Just be careful!!
 

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