5e turbo question

steveatyork

Member +
Ok guys,here's my problem,I recently purchased krissyb 5e engine for my r5:)
my current turbo set up is wepr hybrid tdo4 kit.but from what I gather this will max out at 270 280bhp.so I'm after a new turbo that will let me get to 330-350bhp but I don't want a lag monster

any ideas on what turbo will be suited to my needs (trackdays/dragracing)a good all rounder
 

Mark-ep91

Member +
id say he wants to stick with the td series turbos as it would bolt onto his current mani and downpipe so id say td06 hybrid would be what ur after theres one for sale in the sale section i think!
 

steveatyork

Member +
Yeah it has to be td series or vf series so I can use my manifold etc
mmmm tdo6 I'm sure that would be laggy as hell???
 

jayc-glanza17

Fresh Recruit
right if staying td series style flang, look at the vf series matey, something like a 34.
but with krissys head work he did see great spool times on the godzilla, so td05 wouldnt be to laggy mate.
 

jayc-glanza17

Fresh Recruit
IHI turbo.
The VF series (VF22, VF23, VF24, VF29, VF30) are the most common direct replacement turbos. All VF-series turbochargers use the same roller bearing, water-cooled core assembly. The differences are in their wheels and housings to achieve different flows.

The VF22 has the largest potential for peak horsepower. In other words, in the IHI model range, the VF 22 supports the highest boost levels. It is capable of running up to 25 psi. Because it is a roller bearing turbo, turbo lag is minimal...the boost comes on around 3300 rpm. Expect to max out the VF22 somewhere in the 400-450 hp range.

The VF23 starts the middle ground. It comes on boost around 3100 rpm and is capable of running 20 psi of boost. Expect to max out the VF23 somewhere in the 300-350 hp range.

The VF 24 starts to come on around 2900 rpm and will significantly improve power through the mid range over the stock TD04 turbo. However, the VF 24 is only capable of running around 17 psi.

The VF23 and VF 24 are a great replacement for those who value driveability higher than maximum power.

The VF29 & VF30 delivers a very wide increase in torque over the standard TD-series turbos. It is important to note that the VF30 is not a roller bearing turbo.

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VF22

This turbo has the highest output potential of all of the IHI VF series turbos and is the best choice for those who are looking for loads of top end power. The top end power however, does not come without a cost. The VF22 spools significantly slower than the rest of the IHI models due to the larger P20 exhaust housing and is much less suited for daily driving than some of the other models. Although the largest VF series turbo, the VF22 is not quite optimal for stroked engines or those who wish to run more than 20PSI of boost.

VF23

This turbo is considered a great all-around turbo. Like the VF22 it utilizes the largest P20 exhaust housing. This housing is mated with a smaller compressor housing of the of the VF24. This turbo is considered optimal in applications with range from mild to slightly wild. It does not have the same top end power of the VF22, but spools up significantly quicker.

VF24

This turbo shares its compressor housing with the VF23 however, this housing is mated with a smaller (P18) exhaust side. The smaller characteristics of this turbo allow it to provide ample bottom end power and quick spool. This turbo is very popular for Imprezas with automatic transmissions and Group N rally cars.

VF28

This turbo came standard on the STi Version 5. In terms of overall size, it is smaller than the VF22, VF30 and VF34, and about same size as the VF23.

VF29

This Turbo is nearly identical to the VF24, with the same compressor and exhaust housings. However the compressor wheel in the VF29 is has been changed slightly. The changes made to the compressor wheel in this model are generally viewed as improvements, and as such this unit is typically chosen over the VF24.

VF30

The VF30 is commonly considered the best bang for the buck turbo in the IHI VF series line. A relatively new model the VF30 features the same exhaust housing as the VF24 but a larger compressor side similar to the VF22. The combination of these two parts results in increased output potential without the lag associated with the VF22. Although it doesn't offer the top end supremacy of the VF22, the VF30 is a great compromise between these unit and the quicker spooling models.

VF34

The VF34 is nearly identical to the VF30, with the same exhaust housing and compressor. However the VF34 goes back to the ball bearing design, and in doing so achieves full boost approximately 500RPM sooner than the comparable VF30. The VF34 is the most recent IHI design and as such costs slightly more than its counterpart. Top end performance and maximum output are identical to the 30.

VF35

VF35 The VF35 has identical internals as the VF30 and it uses divided thrust bearings. However, the exhaust housing is a P15 which means this turbo will have fantastic spool characteristics. This turbo is standard on the new WRX Type RA. LIMITED SUPPLY.

more info





VF36
Roller bearing version of the twin scroll VF37, also has a titanium turbine and shaft for even quicker spool. Same compressor housing as VF30/34, however twin scroll P25 exhaust housing provides slightly better top end output due to reduced exhaust pulse interference. This turbo is good for 400HP and used on JDM STI Spec C from 2003 onwards.

VF37 (thrust bearing)
Enter the age of twin scroll IHI turbos. Same compressor housing as VF30/34, however has a new twin scroll P25 exhaust housing that provides slightly better top end output due to reduced exhaust pulse interference. Twin scroll also provides better spool up for improved low down response over the VF30/34. This turbo is good for 400HP and used on JDM STI from 2003 onwards.

VF38
Twin scroll turbo with titanium turbine and shaft. Smaller compressor housing than VF36/VF37 provides tremendous spool up capabilities but less top end than VF36/37. The spool capabilities of this turbo are demonstrated on the JDM Legacy GT, which reaches peak torque at 2400RPM.

VF39
Single scroll turbo used on USDM STI and latest 2.5L STIs released internationally. Smaller than VF30/VF34.

VF42
Exclusive turbo to the S203/S204 models, this features a twin scroll design with a slightly larger compressor than the VF36/37 turbos and different turbine design (more blades). The VF42 is a roller-bearing turbo and is likely of similar size to the VF22 turbo, but with twin scroll exhaust housing for faster spool and superior top end performance due to reduced exhaust pulse interference.

from a subaru website.

hope this helps matey.
 

scot-ish

Member +
Will that flow 330bhp-350bhp what's the max boost it will run????

yup, it has on my 4e, 330 bhp, 1.7 bar before 5000 rpm.

my opinion for you, would be a td05 hybrid, ball bearing.

tm developments sell a good one.

imho td06 is a bit much for a track car, specially a starlet wether its 5e or 4e, i reckon tdo6 on 5e wont make 1.6 bar till well above 5000 rpm
 
the standard head will flow till over 400bhp, cams will just help with the later spool of a big turbo

the restrictions people go on about when going for big bhp are around the head not in it (inlet, exhaust)
 
Last edited:

Nick@TD.co.uk

Registered Trader <a href="http://www.TuningD
I'd see how you get on with the TD04 :) Then go from there...

Cheers

Mike Jones
Tuning Developments Ltd
 
i'd run the hybrid td04 on the 5e and see how it feels first
you dont really have nothing to lose with this option,,,you can upgrade if you want later on
 

steveatyork

Member +
Cheers for the info lads,a billet turbo has popped up wiv 1000miles on it at a good price so hopefully getting it.and it's rated to 360bhp:)
 

spuddy

Ulster Area Rep.
the standard head will flow till over 400bhp, cams will just help with the later spool of a big turbo

the restrictions people go on about when going for big bhp are around the head not in it (inlet, exhaust)

X2, when you find the point where the head is restricting you know about it, no amount of extra boost is going to increase the power.
 
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