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What kind of engine work is needed for twin turbo?

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Old 10-13-2011, 08:29 PM   #1
specizripn
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Default What kind of engine work is needed for twin turbo?

OK, so my 290 or so HP is not really doing the job... I've rode in 500 hp mustangs and still not enough. I was thinking about getting a blower but I don't think I could get enough power out of one to satisfy my insanity. So I have decided to get a twin turbo kit Now I'm trying to figure out what needs to be done to my engine, because I don't really wan't to make my engine into a car bomb with the turbos... So what needs to be done to my engine? Or is it cheaper to just build a new one? I know the bottom needs to be redone for even blowers, but if I'm looking at 700-1100 hp a lot more work needs to be done.
Anyone done this, or have enough experience to give me a proper list? Highly appreciated! Thanks!
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Old 10-13-2011, 08:56 PM   #2
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atleast a MMR 1000 built shortblock. Then a crazy fuel system to keep up with the power.
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Old 10-13-2011, 09:09 PM   #3
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The list begins with a barrel of money and ends up being twice what you budgeted for, then youll get disappointed and start hating the car then sell it and bitch and moan about how much money you wasted. Ask me how I know.....
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Old 10-14-2011, 01:07 AM   #4
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You can put twin turbos on anything. How you tune them is the real question. If you use a stock engine with compression of 9:1 or more, you won't run very much boost, so benefit to cost ratio is not great.
If you purpose build a 7:1 motor with a quality rotating assembly and forged parts, o-ring the heads and pick a cam(s) designed around your system, you could get downright crazy with boost levels. Lots of benefit, but even higher costs.

If you're serious about it, you need to research a lot, but also go sit down with a reputable builder (with turbo experience) that will help you make good choices.
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Old 10-14-2011, 05:33 AM   #5
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another option is sell your car get a already built termi with TT for mid 20's and dont have to worry bout having all the hastle of building it from scratch....thats what i would do unless you really have that barrell of money
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Old 10-14-2011, 10:53 AM   #6
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Quote:
Originally Posted by scottybaccus View Post
You can put twin turbos on anything. How you tune them is the real question. If you use a stock engine with compression of 9:1 or more, you won't run very much boost, so benefit to cost ratio is not great.
If you purpose build a 7:1 motor with a quality rotating assembly and forged parts, o-ring the heads and pick a cam(s) designed around your system, you could get downright crazy with boost levels. Lots of benefit, but even higher costs.

If you're serious about it, you need to research a lot, but also go sit down with a reputable builder (with turbo experience) that will help you make good choices.
I would never build a 7:1 CR engine, that is just ridiculously low and completely pointless.

I also think with current technology in turbos (ball barring turbos,divided turbine housings/twin scroll), running twins is pretty pointless. In the money you're going to spend buying twins, you could have purchased a really nice turbo that will meet all of your goals.
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Old 10-14-2011, 03:51 PM   #7
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I would never build a 7:1 CR engine, that is just ridiculously low and completely pointless.

I also think with current technology in turbos (ball barring turbos,divided turbine housings/twin scroll), running twins is pretty pointless. In the money you're going to spend buying twins, you could have purchased a really nice turbo that will meet all of your goals.
^^^ I agree.If im correcthere?

My buddies 3 serie BMW run a single turbo with twin turbines which is pretty much the same as having a twin turbo setup

BTW for a inline 6 turbo AWD that car pulls soooooo hard 13.7 best 1\4..Not bad for bone stock 300hp
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Old 10-14-2011, 04:05 PM   #8
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^^^ I agree.If im correcthere?

My buddies 3 serie BMW run a single turbo with twin turbines which is pretty much the same as having a twin turbo setup

BTW for a inline 6 turbo AWD that car pulls soooooo hard 13.7 best 1\4..Not bad for bone stock 300hp
Those 335xi are no joke. Add a intake/tune to that car and you won't believe the power it picks up.

BMW did opt for a single turbo in the E92s though. Turbo technology is just to far along to spend money/space/weight on twins. You can finally have your cake and eat it too.
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Old 10-14-2011, 06:09 PM   #9
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lots of guys always want twin turbos and 1000 hp until you realize whats involved. you'll need a VERY stout rotating assembly, tf heads, sheetmetal racing manifold, customer cams, a huge fuel system, built transmission, built rear, tons of suspension components...oh yeah and a $10k turbo system. Just so you are aware, you're talking tons of money and lots of time and labor
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Old 10-14-2011, 06:14 PM   #10
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i'd budget more than 10k just for motor work and turbo. 6k will get you a 2v that'll handle it, and another 3-5k depending on what you wanna do for a turbo system. with a 2v you'd need alot of boost, and at that point you might as well just have bought a cobra.

and with all that, its without labor costs, you'd need to DIY...
then you'd need a trans to hold it...
and then you'd need the suspension and tires to plant it..

then you'd need a properly prepped track to race it, because planting 1000 rwhp on the street... lol... good luck...

aim lower, do it peice by peice. you'll be happier... and who knows, maybe 600 rwhp on a good chassis & suspension to match might be more fun to you than 1000 rwhp on a ****ty chassis and stock suspension....

i honestly think you need to start with something like a 100-125 shot of nitrous or a single turbo system to get you to the 400 rwhp mark. and a single turbo CAN and WILL make 1000 rwhp... its just a tad bit later in the band than twins, but substantially cheaper and easier to maintain. and remember, turbo's love auto cars...
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Old 10-14-2011, 06:38 PM   #11
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to the starter of the thread, have you ever owned a high hp car or been in one? If not, I would suggest going for a ride in a properly setup 400rwhp car...I think you'd be surprised...
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Old 10-14-2011, 08:39 PM   #12
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Can i ask a few questions. 1. Whats done to your car that makes it 290 horsepower. 2) Do you understand how rediculous 700-1100 hp is? Like 97 said i would take a look for a nicely set up 400rwhp car and then look how much it costs there because it would cost ALOT less than 700-1100 rwhp
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Old 10-16-2011, 02:24 PM   #13
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Not to mention the time, money, and know-how for maintnance, trouble shooting, and fixing things as they fail, break, and just plain give up from that kind of stress. Ask me how I know... Luckily, I get to see it on someone else's car in the family.
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Old 10-16-2011, 10:23 PM   #14
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It's a lot of frustration/time/ and money. But that's what I'm doing and I still have fun buyin parts for this thing and don't think I'll ever sell it unless i just HAVE to.

It will be a long list and will take a while to get all the parts you need...just make sure you get a good tuner to begin with because great parts aren't worth anything w/o a great tuner to make them come together. And yes i would drive some 500hp cars and get a feel for em.

Ive driven my dads WS6 (430hp N/A) and its really damn fast and when i get home this weekend we're takin it out for some of it's first nitrous pulls (540hp)...This is how im gonna guage if im wantin to really take my car to 6-650 hp...
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Old 10-17-2011, 05:47 PM   #15
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^thats how I first got the feel of high hp cars. My brother has a 383 stroked LS1 with 150 shot and its just a tad under 650hp, I went for a ride in that and made me realize that my 500-600rwhp range really isnt all that godly lol
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Old 10-17-2011, 09:40 PM   #16
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Exactly...im really thinkin that it will be enough for me. Lol I mean 430 is damn fast...im glad he got a shift light because it's hard to keep an eye on the tach and on the road haha.
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Old 10-17-2011, 10:54 PM   #17
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if you have to ask...
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Old 10-18-2011, 04:58 PM   #18
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if you have to ask...
beat me to it.



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Old 10-22-2011, 03:52 PM   #19
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Hope you got $12 -$15 Large to spend, maybe more.
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Old 10-22-2011, 08:25 PM   #20
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^thats how I first got the feel of high hp cars. My brother has a 383 stroked LS1 with 150 shot and its just a tad under 650hp, I went for a ride in that and made me realize that my 500-600rwhp range really isnt all that godly lol
its different though...

NA just makes insane power anywhere, blowers have that nice top end rush

personally, i cant wait to get the 363 for the FFR done
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Old 10-22-2011, 08:25 PM
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