Turbo for stock manifold

[Frosty]

Just after some advice on turbo's guys. I want something that will bolt to the standard evo 3 manifold and have the least amount of lag, but still make good power. Doing an upgrade on my evo 1 and am a bit confused about which turbo to go for. Any suggestions??

 

[v8h8a]

the on eyou had

mate that one you had would have been awesome..
you should have just got a manifold made..

I think NCK are putting a GT2871 on mine but is yet to be confirmed as it might not fit..

ill let you know what i settle on and what lag and power it puts out...

 

[EVO-00X]

This 5031E Precision Turbo like Matress got would be good :wink: http://4gtuner.com/forums/viewtopic.php?p=36101&highlight=#36101 . Not as big or laggy as the SCM61 so should suit you fine :wink: You're gonna need a T04 style oil drain connection for the turbo but he can let you know all about it (he's selling connections too atm)

 

[matress]

the 50 trim is a great turbo mate, not laggy at all!!! will support 450hp and bolts up to the stock manifold and dump pipe. you could get one landed here for about AU$1400 brand new from the USA including shipment.

you will need to change your oil feed line to make it feed from the oil filter housing, change your oil drain line, block off your water lines and change to a slim line fan.

also, you will need to modify your cooler pipe as you cannot clock the turbo to suit the standard cooler piping if you have an internally gated one. the compressor cover rotates, but the wastegate actuator and feed point hit each other when the compressor cover faces in the right position.

you will need to use a 3 inch intake pipe aswell as the mouth of the turbo is 3 inches.

other than that, if you wanted a true bolt-on turbo, forced performance in the USA have a good deal on 18G's with an oil only centre section or alternatively, you could get one of the gtpumps 20G's.

if you want to know any more about the 50-trim, feel free to ask!

 

[to4garret]

you will need to use a 3 inch intake pipe aswell
as the mouth of the turbo is 3 inches.

DYAMN! that sucker has gurth!!!!

i would seriously look at at some local TD06 20/22/25g's first.

 

[Entaran]

define lag.

fullboost (x psi) at what rpm?

everyone's idea of lag is different.

dre's is wildly different to mine. I consider 2700 rpm laggy

 

[EVO-00X]

You've got a choice of either .48 or .63 A/R the latter being the 450hp model. I suppose it depends on the amount of boost and internal mods you have to support it as well but these would be good on stock internals. They are pretty cheap here :shock: : http://www.maperformance.com/store/product.php?productid=16247&cat=0&page=1 . Did a bit of a search and could only find this dyno sheet of one of these turbos on a non forged bottom end Eclipse in the US (producing 403whp with race gas and NOS :lol: ) http://www.dsmtuners.com/forums/member.php?&do=vehicledetails&userid=44649 . Looks like the turbo cuts in at around 3200rpm and the steeper curve just before 4000rpm is obviously the shot of NOS :twisted:

 

[3zercrowd]

define lag.

fullboost (x psi) at what rpm?

everyone's idea of lag is different.

dre's is wildly different to mine. I consider 2700 rpm laggy

TURBO LAG


Definition: Within a turbocharger's operating range, lag is the delay between the instant a car's accelerator is depressed and the time the turbocharged engine develops a large fraction of the power available at that point in the engine's power curve.



Also:

Boost Threshold vs. Turbo Lag

Turbo responsiveness is usually measured in two ways. The first is boost threshold. Boost threshold is the engine rpm point where the turbo begins producing effective boost pressure, at full throttle. Below the boost threshold point, the engine will usually feel a little mushy and unresponsive. Once the boost threshold is reached, the boost will rise toward peak boost and the engine will begin producing significantly more torque. A well designed wastegated street turbo system designed for high power output may have a boost threshold of around 2,500 to 3,000 rpm. Peak boost will then be produced by around 3,500 to 4,000 rpm, and should hold all the way to redline.

Turbo lag is sometimes confused with boost threshold. While turbo lag is also rpm dependent, it is more of a direct measurement of turbocharger response, as opposed to engine response. Turbo lag is the time it takes for the turbo to spool up from the moment the throttle is pressed to the moment maximum torque at that particular rpm is developed. Obviously, turbo lag widely varies based on engine rpm. For example, if the boost threshold is 3,000 rpm, and you floor the throttle at 1,500 rpm in sixth gear, then turbo lag could be 20 seconds or more, as it will take a long time for the engine to accelerate, off boost, from 1,500 rpm to 3,000 rpm in sixth gear. Conversely, if the engine is at 5,000 rpm, and you floor the accelerator, it may only take .25 seconds for the turbo to spool up again. Perhaps the best way to quantify turbo lag is the slight delay in maximum power delivery that occurs in between full throttle shifts, or when you floor the accelerator to pass someone on the highway. A properly designed turbo system can be both responsive and produce high levels of power, though it is not easy to acheive the right balance.


There you go. :wink:

I should sticky this in a tech section too.....

 

[JSTYLE]

IF you really want a custom bolt on turbo.. i can get what i had on my car.. will support ~240kw and have no lag problems and still plenty of top end.

Jon

 

[BobWrinkle]

I ahve a GTPumps 060 rear housing 16g compressor housing and 20g wheel.

I am happy with it.