I know this topic will only be aimed at a few select briskodians but to use 'Yaris' speak im still thinking about a 'bigsmall' turbo conversion What I mean is if I decided to do it I'd be after using a smallish, quick spooling unit capable of higher power than the standard K03s.

Im not after headline power figures; im after around 300 - 330lb/ft torque which comes in low and holds as far up the rev range as possible. I rate the driveablilty of the standard unit very highly; these are the charachteristics I want to try to retain, just with 'more'. I have VERY limited knowledge on the turbo units companies such as Jabba use to do the conversions... IHI, VF23... :confused:

Can anyone offer me some upto date advice (I have tried searching old posts) on which turbo would suit what Im after? The engine internals will be remaining as standard so pleae bear this in mind.

Thanks in advance,

Lee

I have just bought the garrett eliminator turbo around 2000 euro fitted and remapped. Its absolutely stunning and gives the power you are looking for, very smooth power also. Just one peace of advice though, upgrade your clutch.

I know this topic will only be aimed at a few select briskodians but to use 'Yaris' speak im still thinking about a 'bigsmall' turbo conversion What I mean is if I decided to do it I'd be after using a smallish' date=' quick spooling unit capable of higher power than the standard K03s.

Im not after headline power figures; im after around 300 - 330lb/ft torque which comes in low and holds as far up the rev range as possible. I rate the driveablilty of the standard unit very highly; these are the charachteristics I want to try to retain, just with 'more'. I have VERY limited knowledge on the turbo units companies such as Jabba use to do the conversions... IHI, VF23... :confused:

Can anyone offer me some upto date advice (I have tried searching old posts) on which turbo would suit what Im after? The engine internals will be remaining as standard so pleae bear this in mind.

Thanks in advance,

Lee[/quote']

Jabba still do the VF23...it does spool up quicker than the VF34...gives around the 280bhp mark.

With the VF34 I find it kicks in around 2.5k and on low boost setting (0.7bar) I have not less than 300Nm all the way from 2k up to about 7k...I toyed with the idea of having the VF23 fitted...just ask DaveU and Badger Bill about my deliberations.

The VF23 does kick harder lower down but doesn't produce the power of the VF34......very simliar to the KO3S apparently......might be too much so lot sof wheel spin. About

Where can i find a VF28.5 then?

Jabba still do the VF23...it does spool up quicker than the VF34...gives around the 280bhp mark.

With the VF34 I find it kicks in around 2.5k and on low boost setting (0.7bar) I have not less than 300Nm all the way from 2k up to about 7k...I toyed with the idea of having the VF23 fitted...just ask DaveU and Badger Bill about my deliberations.

The VF23 does kick harder lower down but doesn't produce the power of the VF34......very simliar to the KO3S apparently......might be too much so lot sof wheel spin. About £300 cheaper.

Have a chat with Michael and he can give you the low down about it.

So by the sound of it I need something in between a VF23 and a VF34... I would like to hit 300 lb/ft (quite a bit more than the stated 300Nm) but I want the torque in by the 3k mark. Does such a unit exist?

On my last car I had the engine rebuilt with a Garratt GT28 - this really came in at around 3k and I'd love this one to be just as 'driveable' on this car. I drove others with the GT28RS and those two little extra letters made all the difference (didnt really spool until 4k!)

I'll speak to Michael on this but thanks for the advice so far chaps!

Lee

i thought the RS was supposed to spool earlier than a normal gt28 :confused:

i thought the RS was about the roller bearings and that

Both are roller bearing hence the GT part of the name (I think!), the RS model has a larger housing and is therfore capable of 350+bhp whereas the smaller one was pretty strained to achieve 300bhp.

Lee

So by the sound of it I need something in between a VF23 and a VF34... I would like to hit 300 lb/ft (quite a bit more than the stated 300Nm) but I want the torque in by the 3k mark. Does such a unit exist?

On my last car I had the engine rebuilt with a Garratt GT28 - this really came in at around 2.5k and I'd love this one to be just as 'driveable' on this car. I drove others with the GT28RS and those two little extra letters made all the difference (didnt really spool until 4k!)

I'll speak to Michael on this but thanks for the advice so far chaps!

Lee

The K03s doesn't hit peak torque until around 3.5k so I really doubt you'll get 300ftlb at 2.5k with a bigger turbo. I got 280ftlb out of my old k03s so one of the hybrid k04's such as those available from JBS, Star, AM Motorsport, etc... should be capable of achieving what you want other than such high torque at such low revs.

3.5k peak torque??! :confused:

All of my dyno charts show my peak torque fully in by 3k, less on the latest map infact and thats how it feels on the road too.

I have other mods that might move the torque around abit though?

I'll have a search around the web, maybe take a peak at the eliminator kit and I'll speak to Michael when Im up there for the cambelt and service in two weeks time.

Cheers all,

Lee

Star recently mapped a GT2X eliminator kit boost doesn't start until 3.5k and max bhp was 284bhp. A car with a bolt-on K04 on the same RR got 296bhp.

Cheers again Eddy - maybe im simply expecting too much then :(

Would you know if the KO4 was a Star 'special' unit (fettled slightly) or a bog standard one. Small chance of being right here but it didnt happen to be on a highly modded blue Leon did it?

Well im a bit stuck now I guess.

If anyone can add anything further then please go ahead.

Cheers,

Lee

Yes it was Rob Don's if that's what you're asking so will have been a hybrid K04, you won't get the figure you're after with an off the shelf turbo. The GT2X I was refering to isn't RobDon's though.

BTW the there's a Custom-Code dealer in London who can supply and fit one of the JBS-04 conversions which is available in various stages depending on your requirements.

BTW the there's a Custom-Code dealer in London who can supply and fit one of the JBS-04 conversions which is available in various stages depending on your requirements.

Do you know anyone running a JBS KO4 Eddy?

Do you know anyone running a JBS KO4 Eddy?

There are a few people on SCN and I also think some have been installed on cars in India through a CC dealer over there.

Here's a thread by someone who has the GT2X: http://www.seatcupra.net/forums/showthread.php?t=91631

This member has a JBS-04 (not sure what stage): http://www.seatcupra.net/forums/member.php?u=4430

anymore info on this?

im so tempted by a smaller turbo upgrade, really looking for 270bhp ish and the same 270lbft torque. but doesnt seem to be a way that doesnt have its downsides.

ATP isnt cooled in the same way as OE turbo

JBS one seems expensive from what i hear.

does bolting on a K04 to a K03s car make any benificial difference?

anymore info on this?

im so tempted by a smaller turbo upgrade' date=' really looking for 270bhp ish and the same 270lbft torque. but doesnt seem to be a way that doesnt have its downsides.

ATP isnt cooled in the same way as OE turbo

JBS one seems expensive from what i hear.

does bolting on a K04 to a K03s car make any benificial difference?[/quote']

ATP's GT2X isn't oil cooled but the GTRS is AFAIK.

Depends which K04 you are refering to and of course if you plan to have it mapped too.

I believe Star are your local tuner and they have experience of the GT2X and hybrid K04's so prehaps worth having a chat with them.

yeah thanks eddy, im trying to speak to as many people as i can so i get a broader information window.

yeah i think the GTRS is, just a bit big for my liking, im really only looking for 260-270bhp.

hopefully realitivly cheaply.

either that ill just get a remap and save up for a faster car lol

Have you looked at the AM04?

Also do you have a budget in mind?

no havent actually looked at it yet, wheres best to find out some info?

do they have a website?

buget was about £1200 was enough for an ATP one

no havent actually looked at it yet' date=' wheres best to find out some info?

do they have a website?

buget was about £1200 was enough for an ATP one[/quote']

I assume that excludes the price of the remap and would you be fitting yourself? Also are you just wanting to change the turbo and leave the exhaust as is?

Here's the cost of parts from someone who recently fitted a GT2X to an Ibiza:

ATP Manifold £ 300

GT2X Turbo Kit £ 999

Forge S3 TIP £ 120

S3 MAF £ 80

S3 Injectors £ 380 ish

4 BAR Reg £ 50

Boost Controller £ 60

Forge FMIC £ 600

Evo Heat Sheild £ 90

BMC CDA CAI £ 200

Miltek DP & CAT £ 410

Exhaust £ 280

Remap £ 499

Here's a link to the AM04: http://www.seatcupra.net/forums/showthread.php?t=81728

sorry should have said,

i have

ATP mani, CAT, Exhaust, TIP, twin intercoolers(hoping to be enough for the 260-270bhp

i was hoping £1200 +remap cost really

anymore info on this?

im so tempted by a smaller turbo upgrade' date=' really looking for 270bhp ish and the same 270lbft torque. but doesnt seem to be a way that doesnt have its downsides.

ATP isnt cooled in the same way as OE turbo

JBS one seems expensive from what i hear.

does bolting on a K04 to a K03s car make any benificial difference?[/quote']

K04 takes a lot of work to get it to properly and that there are 2 variants of it.....one will fiit.....one needs a different manifold...I think.

Best thing I can suggest it to talk to a couple of tuners and state what you're after....you'll have a few options and price to compare then.

K04 takes a lot of work to get it to properly and that there are 2 variants of it.....one will fiit.....one needs a different manifold...I think.

Best thing I can suggest it to talk to a couple of tuners and state what you're after....you'll have a few options and price to compare then.

The JBS 04 is a bit of both AFAIK, the internals are from a proper K04 as found on the S3 etc.. but built into the K03S type housing so that it can fit the standard manifold, exhaust, pipework etc.. I think the AM04 may also be along these lines.

thanks guys