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Location:
Newcastle
Registered:
September 2004
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GZE boost problems
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Thu, 07 October 2004 02:53
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Hi,
I have a map GZE run by a microtech LT8-s ecu with extactors and a 2 inch exhaust. I installed a boost gauge yesterday but so far have only got a maximum boost reading of around 5psi. The supercharger is in good condition according to the mechanic that did the conversion - I thought these things ran about 8 - 9psi with the stock supercharger pulley.
Can anyone suggest the problem here?
Also, which of the follwing mods would you recommed i do first; upgrade to a bigger exhaust (2.5 inch??), 175mm supercharger pulley, or front mount a larger cooler?
The dyno gave a reading of 115hp at the wheels. Does this seem about right?
Thanks
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Location:
Bundaberg, Qld.
Registered:
May 2002
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Re: GZE boost problems
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Thu, 07 October 2004 03:02
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where have you tee'd the boost guage into?
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Location:
brisvegas
Registered:
August 2004
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Re: GZE boost problems
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Thu, 07 October 2004 03:19
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the power sounds about right..i prolly would go for a better inltercooler..the exhaust should be right if its mandrel bent..you can play with the pully if you like..but i would suggest getting a bigport 4age cam in the intake side and some adj cam gears set the cam timing up for 114 deg L/C's..run about 13 deg advanced on the ignition timing..and put a 3SGE throttle body on it..do a search in the forums for '4agze throttle body' i posted up a how to guide on the throttle body..it alone is about 5BHP and a heap more responsive..
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Location:
Newcastle
Registered:
September 2004
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Re: GZE boost problems
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Thu, 07 October 2004 03:23
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i T'd the boost gauge into the vacuum line running to the microtech
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Location:
brisvegas
Registered:
August 2004
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Re: GZE boost problems
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Thu, 07 October 2004 03:30
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there is a line from the ABV..try plugging it into that one..
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Location:
NSW
Registered:
June 2004
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Re: GZE boost problems
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Thu, 07 October 2004 08:33
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where abouts is the thread for the swap from the gze throttle body to the 3sge one.
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Location:
Bundaberg, Qld.
Registered:
May 2002
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Re: GZE boost problems
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Thu, 07 October 2004 10:22
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best place to tee into is normaly the vacum line from the inlet manifold to the brown fuel reg vsv. same one you use when you do the ABV mod.
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Location:
Rosanna, Melb
Registered:
June 2002
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Re: GZE boost problems
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Thu, 07 October 2004 14:37
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And for the obvious one, check that your SC belt is TIGHT. And no air leaks post SC.
Hen
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