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Thread: When you're wrong, you're wrong

  1. #1
    Regular Member nutron's Avatar
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    Vehicle : Vauxhall

    Trim : very

    Engine : Z19DTH

    Year : Nosey

    Default When you're wrong, you're wrong

    The GT2556V was fitted and tested and made masses of boost, too much really but not until after 3500rpm... Until then it was not worth driving. So I would imagine the rolling road figures would be great if that was what I wanted but to drive it was pointless.

    I'm not one to be detered though and I have many ideas for the next attempt but not this weekend, three turbo changes if enough I think.

  2. #2
    Regular Member Grumpy1954's Avatar
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    Vehicle : Ford Kuga

    Trim : Titanium

    Engine : 2.0dtci

    Year : 2014

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    trial and error is a perfectly good way to test new layouts.

  3. #3
    North West Regional Organiser paulvectrac's Avatar
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    Vehicle : vectra

    Trim : vxr

    Engine : 2.8 v6 turbo

    Year : 2007

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    how much boost did it make
    Vectra vxr custome remaps egr deletes dpf and diagnostic work all remaps are custome bench tuning avalible all genuine equipment PM for info

  4. #4
    Regular Member lee gsi's Avatar
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    Vehicle : Signum

    Trim : Design

    Engine : 1.9 CDTi

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    Need to be twin turboed

    Seems to be the way manufactures are going with SAAB's 2 litre 190 bhp Twin turbo diesel and and Volvos 2.4 twin turbo 205 bhp.

    Then let the tuners loose on them

    FIAT's 1.9 JTD twin turbo Twin stage turbo: http://www.eurocarblog.com/post/499/...th-100-hpliter

    Last edited by lee gsi; 16th July 2011 at 22:22.

  5. #5
    Regular Member nutron's Avatar
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    Vehicle : Vauxhall

    Trim : very

    Engine : Z19DTH

    Year : Nosey

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    I don't know what boost it made, the sensor only goes upto 3 bar absolute (43.5psi - atmospheric). The pressure was off the gauge from 3500 to 5500rpm. The first hybrid that I have put back in runs at the limit of the pressure sensor from 2200rpm to 5500rpm. The efficiency of the 52mm compressor is not as good at top end though and the air is heated too much.

    I'm gonna have another look next week after a rest

  6. #6
    spoons
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    Quote Originally Posted by nutron View Post
    I don't know what boost it made, the sensor only goes upto 3 bar absolute (43.5psi - atmospheric). The pressure was off the gauge from 3500 to 5500rpm.
    Holy **** 43.5psi... my VXR is at 23-25psi and I thought that was high

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    Quote Originally Posted by spoons View Post
    Holy **** 43.5psi... my VXR is at 23-25psi and I thought that was high

    It is for a petrol Biggest enemy of upping the boost is detonation / knock spoiling your fun.

    Nutty Yanks have done twin sequential turbos on Cummins 5.9 diesels running near 100psi and getting around 1000hp (smoking like a tyre fire at that )

    They're not afraid to break things, though!

  8. #8
    spoons
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    Quote Originally Posted by hebblemarine View Post
    It is for a petrol Biggest enemy of upping the boost is detonation / knock spoiling your fun.!
    Yeah, my BHP was reined back in to allow for correct fuelling at the higher RPM and safe injector duty cycles.

    I need bigger injectors next to get up to 350 BHP

  9. #9
    Regular Member nutron's Avatar
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    Vehicle : Vauxhall

    Trim : very

    Engine : Z19DTH

    Year : Nosey

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    minus atmospheric, which is about 14.5psi (1bar) so north of 29psi. I had readings of upto 32psi on one set of rollers but this was running more pressure than that as I was not getting the oil mist blowing out on the rollers.

    I'm putting a GT2056V combination together on Friday, won't be fitting until next week though.

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