15 replies to this topic

[Madmover]

Currently have a thorney stage 2 (Militek, 100cell cat, mapped). Want to add a VXR turbo now with the view of stage 4 at a later stage - can I bolt the VXR turbo on without having to get the car remapped again or will it not run correctly? Also, aside the turbo and actuator, what else will be needed? Thanks in advance and sorry if this has been covered already but I couldn't find much after a quick search.

[mbes2]

Have a read over..

 

http://www.courtenay...ng/info_22.html

 

CS 1**

Exclusive Courtenay Sport Software Upgrade, Rolling Road Tune

  Increases up to 225 bhp £540 Fitted

 

CS 2**

Exclusive Courtenay Sport Software Upgrade, airbox modifications, Full stainless steel 3" 76mm exhaust system (including front pipe & 200cpi sports cat), Rolling Road Tune

  Increases up to 240 - 245 bhp and 260 - 275 lb ft (350 - 372 Nm) £2,370 Fitted

 

CS 3**

Exclusive Courtenay Sport Software Upgrade, airbox modifications, Full stainless steel 3" 76mm exhaust system (including front pipe & 200cpi sports cat), Bespoke Charge Cooler System (see below for full details), Rolling Road Tune

  Increases up to 260 bhp and 290 lb ft (392 Nm) £4,712 Fitted

 

CS 4**

Exclusive Courtenay Sport Software Upgrade, airbox modifications, Full stainless steel 3" 76mm exhaust system (including front pipe & 200cpi), Bespoke Charge Cooler System (see below for full details), Z20LEH (Astra VXR) Hybrid Turbo charger with stronger cast manifold, Uprated Actuator (not VXR actuator), Uprated Higher Flow Injectors, Rolling Road Tune

'Competition' Clutch Required if not already fitted.

  Increases to 285 - 290+ bhp

310-340 lb ft Torque £5,982 Fitted

CS 4 with Lightweight Billet Steel Flywheel and Uprated Clutch**

Exclusive Courtenay Sport Software Upgrade, airbox modifications, Full stainless steel 3" 76mm exhaust system (including front pipe & 200cpi sports cat), Bespoke Charge Cooler System (see below for full details), Z20LEH (Astra VXR) Hybrid Turbo charger with stronger cast manifold, Uprated Actuator (not VXR actuator), Uprated Higher Flow Injectors, Courtenay Sport Lightweight Billet Steel Flywheel (outright not exchange), Uprated 'Competition' Clutch (Cover and Disc), Rolling Road Tune

  Increases to 285 - 290+ bhp

310-340 lb ft Torque

with improved throttle response. £7,052 Fitted

Edited by mbes2, 20 May 2015 - 07:59 AM.

[siztenboots]

you can just bolt it on , drive

 

oil change is mandatory , and fit new exhaust manifold gasket, studs and nuts

[Duncan VXR]

The vxr turbo can come with a touch more preload on the actuator v the oem one but agree with Steve bolt on and go but very good practice to change studs and oil change etc Its not going to cause any issues and most maps on the oem ecu run a touch rich DG

[Nev]

I think the actuator spring on the VXR turbo is stronger than the OEM turbo. However, in theory this should not affect how much boost your car will make. This is because the waste-gate solenoid will still trigger when the MAP sensor see the required "cuttoff" boost.

[Madmover]

Thanks folks, I figured that Id better check before I bought it and found out. Oil, Bolts and gaskets I was aware of but wanted to make sure there was nothing major aside the usual which needed to be done :-) Any idea on how much labour time a garage should charge/what would be acceptable for this?

[siztenboots]

it really is not that difficult to do yourself, you might have a trip to halfords to get a large socket for the oil banjo bolt and some TX sockets

 

the time consuming part for the garage is getting off the heatshields and trying not to damage them

 

you will have to swap the oil and water feed to match the old turbo you take off, but if you buy the turbo from Courtenay Sport they will set this all up for you.

[Madmover]

I did think about it but really don't have the time currently nor do I fancy a few hours in the garage as the swear box is still full from the rad change. I'll speak to courtenay later :-) Cheers Andy

[Duncan VXR]

Autovaux can be cheaper for the service items and turbo etc if you don't have it already? CS usually also have in stock so both will get what you need

 

I am local...ish been in Coventry and maybe able to fit for you if needed?

 

DG

[redvts]

My v band from the turbo to pre cat self distructed on removal and they arent cheap!

[scw02102]

did you fit this yourself? Did you notice a difference?

[siztenboots]

the vxr turbo k04-0049 is better than the original LET k04-0024 one in every way.

 

with a slight tweak to the map , should get an easy bhp improvement and get the best out of stage 2 changes , next step must be charge cooler.

[harboged]

the vxr turbo k04-0049 is better than the original LET k04-0024 one in every way.   with a slight tweak to the map , should get an easy bhp improvement and get the best out of stage 2 changes , next step must be charge cooler.

I run a stage "1.5" now. I'm not planning to install a chargecooler anytime soon but of course I'd like to have more power. But what's more important is driveability on track and that the power will not decrease due to high inlet temps. Would it be beneficial to install the VXR turbo only in order to make life easier for the turbo, and not care about maximising its capacity?

[harboged]

Double post

Edited by harboged, 11 August 2016 - 01:06 PM.

[siztenboots]

the main restriction in the system is the k04 turbine wheel , which is same for all the turbos

 

if you construct a funnel in the scoop and seal it to force ram air on to the intercooler you will get better inlet temps.

 

assuming that is you have a way to read inlet temps, otherwise if you go on track and keep your foot down, you will get det and knock retard will try and save the engine.

 

with a charge cooler you avoid the problem and get much more power.

[harboged]

the main restriction in the system is the k04 turbine wheel , which is same for all the turbos   if you construct a funnel in the scoop and seal it to force ram air on to the intercooler you will get better inlet temps.   assuming that is you have a way to read inlet temps, otherwise if you go on track and keep your foot down, you will get det and knock retard will try and save the engine.   with a charge cooler you avoid the problem and get much more power.

Ok, thanks! In what ways is the vxr turbo better then? Less prone to crack. Something else?