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Forced Induction & N20 Tech General discussion of forced induction and nitrous for the Ford Ranger.

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Old 04-10-2007
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turbo question

this is something i've always wondered:

ok, i dont know much about turbo's so bear with me. but i was wondering how big is the pipe that goes from the exhaust manifold to the turbo so it spools up? does it matter how big it is?

thanx
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Old 04-11-2007
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dont use a pipe, just bolt it to the manifold...if its a v style motor i'd run small twins only because it guarantees equal pressure in the heads, if youre still wanting to do a single set up on a v style motor i'd run 3 inch down then bolt the turbo to where they collect together
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Old 04-11-2007
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Ok, so based on your Cardomain you have the 4.0. But we could use some more information if this question is anything more than just an inquiry.

This is a question for your truck right? If not then the exhaust header and turbo setup can change quite a bit from vehicle to vehicle and motor to motor.

But for your truck you can do it a few ways. And, do you have emmisions where you live? That will play a huge role in how you setup the system as well.

But you can do the twin turbo setup. With custom headers or have a flange for the turbo's made for your headers. If you make em custom, 2.25" primaries (if you can fit them) would work well.

If you go the single turbo setup, youll have to install the turbo after you connect the two exhaust headers together, this could get tricky if you try to use the stock exhuast, and a custom set of headers and cross over pipe could get spendy. Again 2.25" primaries into a 2.5" pipe to the turbo would work fine.

If emmisions is not a concern, then after the turbo you'd want the least amount of back pressure, so 3" straight back after the turbo, no catyletic converter and a straight through muffler would suffice.
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Old 04-12-2007
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thanx alot guys. the idea to turbo my truck has always floated around in my back of my mind, but i have neither the time, nor money to do it. this was just a question i've always wondered about. if i did turbo my truck, i would drop a 5.0 in it, then turbo it, or possibly supercharger. but again, i highly doubt i'll fall upon the cash to actually do this.

thanx for the clarifying that for me tho. oh, one more thing, is there a conversion kit to put a 4.6L V-8 in a ranger instead of the 5.0? which is better?

tahnx again
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Old 05-18-2007
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well, i was talking to my buddy who has a WRX, and he was talking about possible upgrading it to the STI. getting a bigger turbo, injectors, exhaust and all the other goodies...i asked him if he would sell me his old turbo and he was all game for it. of course it will be while until this all happens. but im pumped on it. its gunna be alot of work getting it on my truck...but it will be sweet as [email protected] when it/if it happens. expensive upgrade, but im sure it will be worth it. what do you guys think
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Old 05-18-2007
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Find someone who can read compressor maps, this turbo may or may not (most likely not) work well with your engine.
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Old 05-18-2007
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The stock turbo off a WRX will spool at idle on a 4.0 ranger and run out of air by 2500 rpms and be a restriction after that.


Spend some time learning about forced induction before you start buying parts. It's not something you can just jump into and you need a lot of knowledge before making any decisions.
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Old 05-18-2007
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to your 4.6 question

to my knowledge a 4.6 wont go into the truck with out frame modification its a 90 degree V

and the 5.0 and 5.8 are less than that () so they will physically fit in the truck easier..
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Old 05-18-2007
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Quote:
Originally Posted by slodsm
The stock turbo off a WRX will spool at idle on a 4.0 ranger and run out of air by 2500 rpms and be a restriction after that.


Spend some time learning about forced induction before you start buying parts. It's not something you can just jump into and you need a lot of knowledge before making any decisions.
I wonder how well it might work if it were rear mounted. Based off the principal that systems setup that way use smaller exhaust housings since they exhaust is cooled by the time it reaches the turbo. I would think an upgraded compressor would be inline still though.
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Old 05-18-2007
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It's a water/oil cooled turbo so rear mounting is going to be a pain in the *** to start with. All rear mount kits are straight oil cooled.

When you upgrade a compressor, you have to have it done professionally and rebalanced as well and then purchase a new compressor cover. Now you are as deep into a turbo that on a GOOD day would support 250whp on a much smaller motor but choke to death violently on a big motor as you would be just buying a new one.

To do an FI setup right on a ranger, doing all the fab work myself since that's what I do, it would still cost more than 3k to be reliable and street friendly (as in traffic for two hours with no issues). It's not something you can do on a budget unless you are into hack jobs for the sake of saying "I have a turbo".
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Old 05-18-2007
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Good points.

Though, I know nothing of the turbo's that the WRX's utilize. The stock T3 .60/.63's on the Ford turbo car's were water and oil cooled. However, actually having them watercooled or not has shown no ill effects with respect to eachother. Oil temps aren't affected by not water cooling the turbo, so in a small way, I would think the WRX turbo might be able to accomplish the same thing.

The turbo on my 94 Ranger right now isn't water cooled though it's supposed to be (stock), and I haven't had a problem with it.

Though this is a moot point as you're right, the turbo is not optimal for the engine.
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Old 05-18-2007
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You are correct, the turbo can be ran sans water, BUT, it's SERIOUSLY a crap turbo lol. It has so little flow it spools instantly on the 2.5 liter motor and signs off by 5k.

Not to mention, they have serious issues with the wastegates cracking on th exhaust housing from the wastegate hole to the turbine wheel, and they just suck lol. It's the very last turbo I would consider. For a 4 liter ranger, the minimum I would go with would be a T3T04e with a 63 exhaust and a 60 inlet. Supports a little over 450chp, will have great spool characteristics, and be able to maintain solid boost all the way to redline in the truck without starting to blow hot air because the thing is being overworked.

Personally, I would go with an SC6176S at a minimum, will be a "bit" laggy on the truck but the amount of power it would make at a nice conservative boost level would be impressive and it wouldn't be working the turbo at all. You would be able to get away with a small intercooler because of the efficiency of the turbo wouldn't build much heat and with the T3 hotside, you could still use a fairly small crossover pipe, have a small footprint in the engine bay, and still flow great with a 3 inch downpipe.

It would most likely see full boost just before 3k or so and pull like mad all the way to 6k.
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Old 05-19-2007
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awwwhhhhh. well nuts. i've read up on turbo's so i have a pretty good idea on how they work and such, i know i can still learn a whole lot more, but i have a basic idea on it at least. if i do turbo my 4.0. i'd want the turbo to kick in at about 2500-3000 and pull all the way up to redline. i'll keep researching them and such. but thanx for all the help guys. oh and for whats its worth..his WRX is a 2000, im guessing its prolly the exact same turbo as you have on your 06 WRX? but yeah..thanx alot guys.. i really appreciate it.
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Old 05-19-2007
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Yes, turbo is the same but a 2000 (didn't think they were in the states until 2002) had a 2.0 vs the 2.5 for 06 and up. Other than displacement and injector size, 2002-present WRX's are all pretty much identicle.
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Old 05-19-2007
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ohh alright. his is the 2.0 like ya said. its alot of fun to drive. alrighty, well thanx alot.

laterz
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