Z20LET pipework - Corsa Sport - for Vauxhall and Opel Corsa B, Corsa C and Corsa D

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Iain M

Member

Registered: 18th Aug 05
Location: Wigan - Drives 272bhp corsa ZLET
User status: Offline

21st Oct 08 at 14:41

is there any differance in performance in changing the way the pipework runs from the intake? If so what? See picys below

Cheers

Nick-S

Member

Registered: 3rd Mar 04
Location: Leigh. Drives: RS Megane 230 F1 Team R26
User status: Offline

21st Oct 08 at 14:42

Dont they use the 2.2 airbox so it makes the charge pipe work shorter to make it abit less laggy?

mattfiesta

Member

Registered: 14th Jul 05
Location: Nottinghamshire
User status: Offline

21st Oct 08 at 14:43

quote:
Originally posted by GSi_16v
Dont they use the 2.2 airbox

correct

J4M13

Member

Registered: 15th Apr 06
Location: Bacup (Rossendale)
User status: Offline

21st Oct 08 at 14:45

Also to stop the cold air getting warm over the top of the rocker cover iirc?

Nick-S

Member

Registered: 3rd Mar 04
Location: Leigh. Drives: RS Megane 230 F1 Team R26
User status: Offline

21st Oct 08 at 14:46

quote:
Originally posted by mattfiesta

quote:
Originally posted by GSi_16v
Dont they use the 2.2 airbox

correct

i wasent saying that, i was sayin the reason they use the 2.2 airbox

[Edited on 21-10-2008 by GSi_16v]

mattfiesta

Member

Registered: 14th Jul 05
Location: Nottinghamshire
User status: Offline

21st Oct 08 at 14:53

quote:
Originally posted by GSi_16v

quote:
Originally posted by mattfiesta

quote:
Originally posted by GSi_16v
Dont they use the 2.2 airbox

correct
i was saying that, i was sayin the reason they use the 2.2 airbox

[Edited on 21-10-2008 by GSi_16v]

I wanted to get involved because I've got a 2.2, I didn't know the reason for them doing the swap though

Nick-S

Member

Registered: 3rd Mar 04
Location: Leigh. Drives: RS Megane 230 F1 Team R26
User status: Offline

21st Oct 08 at 14:56

Iain M

Member

Registered: 18th Aug 05
Location: Wigan - Drives 272bhp corsa ZLET
User status: Offline

21st Oct 08 at 14:59

As simple explanation as that?? welll thankyou, just something that bugged me as i didn't know the answer.

Nick-S

Member

Registered: 3rd Mar 04
Location: Leigh. Drives: RS Megane 230 F1 Team R26
User status: Offline

21st Oct 08 at 15:00

yer, no power gains in it realy. looks better though

Iain M

Member

Registered: 18th Aug 05
Location: Wigan - Drives 272bhp corsa ZLET
User status: Offline

21st Oct 08 at 15:02

Makes sense about keeping it that bit cooler when you think about it.

DaveyLC

Member

Registered: 8th Oct 08
Location: Berkshire
User status: Offline

21st Oct 08 at 15:03

quote:
Originally posted by mattfiesta

quote:
Originally posted by GSi_16v
Dont they use the 2.2 airbox

correct

Increasing the length of the inlet BEFORE the turbo does not create lag, so it will make very little difference.. It MAY be slightly less restrictive but as for decrease lagging thats negligable.

Nick-S

Member

Registered: 3rd Mar 04
Location: Leigh. Drives: RS Megane 230 F1 Team R26
User status: Offline

21st Oct 08 at 15:04

quote:
Originally posted by DaveyLC

quote:
Originally posted by mattfiesta

quote:
Originally posted by GSi_16v
Dont they use the 2.2 airbox

correct

Increasing the length of the inlet BEFORE the turbo does not create lag, so it will make very little difference.. It MAY be slightly less restrictive but as for decrease lagging thats negligable.

good point, its long pipeing after the turbo compresser were it bocomes laggy.

Iain M

Member

Registered: 18th Aug 05
Location: Wigan - Drives 272bhp corsa ZLET
User status: Offline

21st Oct 08 at 15:11

Also these engines don't like normal DV's am i right?? So either a twin piston DV or a recirculation valve one would be necessary?

[Edited on 21-10-2008 by Iain M]

Jambo

Member

Registered: 8th Sep 01
Location: Maidenhead, Drives: VXR Arctic
User status: Offline

21st Oct 08 at 15:18

youll find alot of the engines wont like DV's i took mine off as it made it run shite.

DannyB

Premium Member

Registered: 6th Feb 08
User status: Offline

21st Oct 08 at 15:24

Bought a new car Iain?

Iain M

Member

Registered: 18th Aug 05
Location: Wigan - Drives 272bhp corsa ZLET
User status: Offline

21st Oct 08 at 15:27

No not yet just reading up on things first so i don't do owt daft.

Jambo - what did you use instead? I have read they fuck up some of the sensors as in the engine gets confused.

j10E W

Member

Registered: 30th Sep 04
Location: maidstone
User status: Offline

21st Oct 08 at 15:29

just keep the standard dv

DaveyLC

Member

Registered: 8th Oct 08
Location: Berkshire
User status: Offline

21st Oct 08 at 15:43

If you are going to get one, get an X reg to avoid the stupid tax bands..

And yes you need a twin piston DV if you want VTA.

Jambo

Member

Registered: 8th Sep 01
Location: Maidenhead, Drives: VXR Arctic
User status: Offline

21st Oct 08 at 16:06

just went back to the standard DV and car ran 10X better

SAL

Premium Member

Registered: 19th Dec 05
Location: Radlett, Hertfordshire
User status: Offline

21st Oct 08 at 17:02

Made a slight difference on my GSi, nothing to shout about.

R1CH

Member

Registered: 28th Sep 03
Location: Kent
User status: Offline

21st Oct 08 at 17:04

quote:
Originally posted by J4M13
Also to stop the cold air getting warm over the top of the rocker cover iirc?

The same cold air that goes through a red hot turbo!

The idea of removing the crossover pipe is to make the inlet track shorter. I also think it tidies up the engine bay

Heres mine - Also i made 317bhp with this set up

Luke

Member

Registered: 9th Dec 05
Location: Oxford Drives:Corsa B C20LET
User status: Offline

21st Oct 08 at 17:05

must admit that the crossover pipe makes the engine look ugly

Mike GSi

Member

Registered: 3rd Jan 07
Location: Ipswich, Suffolk Drives:Astra VXR
User status: Offline

21st Oct 08 at 17:06

one of the easiest, cheapest, and worthwhile mods for the Zlet, also a hardpipe kit would be a good look too

DONT get a dump valve, you wil find the noise from the turbo is louder when you change the airbox and take out the crossover pipe!

The only issue with the 2.2 mod is that the breather isnt connected to the inlet, but you can plum it into the 2.2 airbox with the correct pipework

R1CH

Member

Registered: 28th Sep 03
Location: Kent
User status: Offline

21st Oct 08 at 17:08

I have my breather venting to atomsphere, I always have a bailey shit thing on as well as the the standard valve connected.

I dont trust the standard item with 1.5 bar boost!

Mike GSi

Member

Registered: 3rd Jan 07
Location: Ipswich, Suffolk Drives:Astra VXR
User status: Offline

21st Oct 08 at 17:10

having both connected is pointless. you will find it runs alot smoother with the breather into the inlet

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