Help me choose a twin turbo setup

[firebat45]

Alright, I'm a relative novice when it comes to turbos. I've been reading and researching as much as I can, I'm not asking for a spoon-fed walkthrough, but some verification that what I'm learning is correct would be nice.

I've been using this calculator to see what kind of turbo sizing I want. The engine will be 3.2, 8.5:1 forged piston, twin turbo'd. I'm more concerned about quick spooling than maximum power, max power doesn't really matter to me.

Now, the turbo that seems to fit properly is a Mitsubishi TD04H-19T from some late model Volvo, except 2 of them. Before anyone suggests a single larger turbo, there is no room for exhaust routing for that, and I prefer the quick spooling of twin. Twin sequential turbo is out of the question, too. I'm just wondering if there's any other options for a turbo that would work, more options make it easier for me to find the turbos I need.

Also, from what I've been hearing, I can run 20-25psi on those pistons. Obviously that will need intercooling, what size intercoolers are sufficient? Is there any point to cams too, or are the stock (MTX) ones fine?

 

[SuperHO]

who says there's no room for a single turbo? i can think of four off the top of my head who have single intercooled snails in their cars. i have yet to see anyone who's managed to find room for twins in there, though. also, knowing you don't care about peak power, you obviously want some power increase. that being the case, how much power are you looking for?

 

[zblackbeast]

In his little calculator it say his target was 500. at 8.5 PSI your going to need A LOT of boost. I don't know much at all about boost. But i do know that. The lower the compression the more boost you will need to reach the same power as joe shmo. But you can also handle more boost than Joe Shmo.

 

[firebat45]

500hp at the crank would be nice, but the reason for the turbos is low end power increase, upper end increase is kind of a bonus. Obviously I do want more power, I'm just not looking for the boost to hit at 7000rpm and give me 1000 horsepower, that kind of thing.

The engine isn't going to be in a Taurus, that's why it won't fit a large single.

EDIT: I know I'll need a lot of boost. The calculator is estimating around 20-25PSI, that should be ok on these pistons, correct?

 

[zblackbeast]

You have more than enough torque with a stock motor to spin the tires in a light car like that.. Plus, when your building boost, your going to be at WOT... unless you shift at lik 5500 or 6k, you wont go below 4-4500.. so why max out your turbos WELL before your redline?

 

[Off Road SHO]

I hear you on the need for twin instead of a single.

There is a guy over in california with a SHO powered buggy that ran twin garretts out of the Dodge 2.5 L engines. Theye were super cheap to buy, cheap to rebuild, had internal waste gates and the best part, they spooled up at 2,000 rpms and gave him full boost at 5,000. In his light, 2600 lb buggy, that gave him excellent throttle response.

I'm all for cheap to buy but good quality turbo's. You WILL need to spend the money elsewhere though; inter cooler, chip, large injectors, and much, much bigger brakes.

Tom

 

[firebat45]

I hear you on the need for twin instead of a single.

There is a guy over in california with a SHO powered buggy that ran twin garretts out of the Dodge 2.5 L engines. Theye were super cheap to buy, cheap to rebuild, had internal waste gates and the best part, they spooled up at 2,000 rpms and gave him full boost at 5,000. In his light, 2600 lb buggy, that gave him excellent throttle response.

I'm all for cheap to buy but good quality turbo's. You WILL need to spend the money elsewhere though; inter cooler, chip, large injectors, and much, much bigger brakes.

Tom

Do you mean off the 2.2L Dodges? The 2.5s used Mitsubishi turbos (that I cant find the stock size of). The 2.2 used Garretts, and the Super 60 is a pretty good match for the engine also.

 

[Off Road SHO]

You're right, I had a senior moment. They were off the 2.2's. The same turbo that I ran on my Toyota 3S-FE 2 liter twin cam in my old four seater buggy.

Tom

 

[Sho Amo]

yes you can run that much boost ive seen it done many times.

BUT, you will need to properly upgrade the fuel system. i mean like 60lb injectors and a high flow fpr.

i dont know what car your running this in but i heard that the stock fuel lines (pre-fpr) are too small also. good thing about that is its easy to replace. all you gotta do is get a 14ft -3 or -4 an braided line to the tank.

 

[SHO_DOODmorrris]

sigh. he knows what he needs to run people hes not a noob. hes just asking if there is a better turbo out there. and i can guarentee you this car is not a taurus... blaine you should post up the link. on second thought. let them suffer. wait a few more weeks till its rolling.

-M

 

[firebat45]

Mitch, did you do any turbo research for yours? Am I reading the maps correctly? I will post here, but not many people here will be interested until I have something substantial to show. Besides, I'm still waiting on the engine, and that's the core "SHO" part.

I will be running all the proper supplementary equipment (chip, fuel system, brakes, etc). Sho Amo, thanks for the heads up on the fuel lines. I haven't even looked at what lines I'll use, but now I know to get something big.

 

[SHO_DOODmorrris]

6 AN should be plenty. do the dual feed like on the SHOnut High flow kit. run like an 8AN or 10 AN from the pump to the reg then 2 6AN feeds, one to each rail and then a 6AN return line.or somthing liek that. Josh would know more.

Yes i did reaserch on my turbo. ill post up my map when i can and ill talk more abou *** later

 

[nik97]

Before anyone suggests a single larger turbo, there is no room for exhaust routing for that

While I'd love to see a clean twin setup on a SHO, I think you will soon find that to be just as much of a headache as a single...

This setup makes plenty of boost before I'm even ready for it(~3k) and pulls all the way to around 7k.

 

[TRicker]

i want to **** your car nao pleeze! oe kay! /bangbangbangbang

 

[SHO_DOODmorrris]

While I'd love to see a clean twin setup on a SHO, I think you will soon find that to be just as much of a headache as a single...

This setup makes plenty of boost before I'm even ready for it(~3k) and pulls all the way to around 7k.

Hes not putting it in a SHO.

 

[SHO_DOODmorrris]

i want to **** your car nao pleeze! oe kay! /bangbangbangbang

:shakehead