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Location:
Sydney
Registered:
December 2004
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Location:
Brisbane, Australia
Registered:
May 2004
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Re: 4AGZE Top end power drop
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Sun, 19 December 2004 11:13
 
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The problem could be related to the 175mm pulley while using the top mount.
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Location:
Canberra
Registered:
May 2002
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Re: 4AGZE Top end power drop
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Sun, 19 December 2004 11:27
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what's the other axis on the graph? Air fuel ratio? I can't see much in that top quality picture 
That power dropoff looks pretty mean 
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Toymods Social Secretary
Location:
Sydney
Registered:
July 2002
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Re: 4AGZE Top end power drop
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Mon, 20 December 2004 01:09
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if that is air/fuel ratio.. then its leaning out quite terribly!!
that doesnt look very healthy for an AFR at high RPM.
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: 4AGZE Top end power drop
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Mon, 20 December 2004 01:44
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maybe the ECU is retarding the timing suddenly at that rpm... seems bad to have power suddenly drop like that.. means torque is dropping away even faster... that it stabilises at a lower level at higher rpm, there must be a control problem.
Cya, Stewart
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Toymods Social Secretary
Location:
Sydney
Registered:
July 2002
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Re: 4AGZE Top end power drop
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Mon, 20 December 2004 05:11
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did the S/C shut off?
is the ignition timing set correctly?
is there a vacuum/boost leak to the MAP sensor?
i dunno - this one is WEIRD!
i thought i had it bad with my power trough.....
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Location:
c'town, NSW
Registered:
May 2002
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Re: 4AGZE Top end power drop
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Mon, 20 December 2004 05:16
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Karl even tho your power curve is a wonky p00, your mixtures are good for a fair chunk of the rev range.
but perhaps other mechanical factors caused your wonky p00, how many diffs u been through now? 
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Toymods Social Secretary
Location:
Sydney
Registered:
July 2002
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Re: 4AGZE Top end power drop
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Mon, 20 December 2004 05:52
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1. came factory busted from piccies
2. busted thanks to sticky tyres and WSID and 6000rpm dumps
3. dropped the centre pin thingy after 1000kms(see the thread with videos)
4. wore out thanks to massive amounts of metal chunks in the housing and driving to brisbane and back....
Then there was the bog warmer that it came with originally....
Hilux is on the way. I still have nothing on Mr Sheerman though.
yes that graph is p00. I am this week installing the p00 smoothing fan device - ready for dyno day *(most improved is my target)
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Location:
Sydney
Registered:
December 2004
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Location:
Perth, WA
Registered:
February 2003
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Re: 4AGZE Top end power drop
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Mon, 20 December 2004 11:30
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Ive read thats its due to the ECU.. and only happens on the MAP sensored ones?
There was a big post up about it on the Twincam website
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Location:
Adelaide
Registered:
May 2003
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Re: 4AGZE Top end power drop
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Mon, 20 December 2004 22:14
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Thats a tiny hit, around 4000rpm. Not this HUGE dip in the graph. Sounds like your SC might be dying. Especially if its making a growling rumbling sound.
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Location:
Brisbane
Registered:
May 2002
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Location:
Adelaide
Registered:
May 2003
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Re: 4AGZE Top end power drop
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Tue, 21 December 2004 06:33
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Mmm, that woudl explain the charger grumbling away as well.
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Location:
Sydney
Registered:
December 2004
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Re: 4AGZE Top end power drop
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Tue, 21 December 2004 07:45
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posibbly
im running a stock airbox with no cold air feed.. missing the bottom bit
it runs great at night though or in winter hard all the way
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Location:
Adelaide
Registered:
May 2003
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Re: 4AGZE Top end power drop
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Tue, 21 December 2004 07:51
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Yeah, if that is the case then i would probably pin it on the cooler.
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Location:
Sydney
Registered:
December 2004
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Re: 4AGZE Top end power drop
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Tue, 21 December 2004 08:00
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is anybody running front mounts or aftermarket ics?
im thinking of front mount.. but im running aircon and dont know where the lines would route.
i dont care about the idle issues either
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Location:
Adelaide
Registered:
May 2003
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Re: 4AGZE Top end power drop
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Tue, 21 December 2004 08:13
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You can get a HKS top mount which Jason has. But they only come up occasionally. I think ARC make one too.
You could get a custom one made up to fit in there, but that might be a bit pricey.
Personally i have a fairly large front mount, which fits in there nicely. Its very tight with the aircon in there too, and i would have had to ditch the aircon fan and replace it with very high flow 120mm fans in the space that the aircon condenser woudlnt get any direct airflow. I had to get custom lines made up.
I ended up ditching aircon because i cant get the wiring spliced in right from the JDM climate control  .
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Location:
Ireland
Registered:
May 2002
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Re: 4AGZE Top end power drop
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Tue, 21 December 2004 10:50
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saw the same problem on ym mates ae101 gze corolla.
Get a very good boost gauge, not some 50dollar piece of poo.
If your boost drops off and you hear a hissing noise its the belt slipping on the SC.
Try tightening your belt, worked for us 
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Location:
Sydney
Registered:
December 2004
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Re: 4AGZE Top end power drop
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Tue, 21 December 2004 11:01
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yeah boost stays all the way to the top. no slipping
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Location:
Montrose, VIC
Registered:
May 2002
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Re: 4AGZE Top end power drop
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Tue, 21 December 2004 11:17
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I played with a 101 GZE in it's original car briefly the other day. When I drove it first, it wasn't happy, at about 5 grand it died completely. I cleaned the air filter, didn't do much, also I noticed the huge amount of knock sensor activity, I accused the owner of using Safeway (Woolies) regular unleaded - turns out I was dead right Anyway, after a little while it got a lot happier again, and I haven't seen the car since.
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4AGZE Top end power drop
