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08-05-2009, 08:01 PM | #1 |
Drives: Vitz RS Turbo Join Date: Nov 2008
Location: ML
Posts: 576
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1NZFE Safe REV limit
I am considering to finally make a total tuneup to the engine on dyno. Here the tuners do not know much about the 1NZFE engine so I ask here what is the max safe rev limit to the engine?
(Remember that I am standalone ) Last edited by Parmas; 01-09-2010 at 09:39 AM. |
08-05-2009, 10:20 PM | #2 |
Slowy getting there
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I know that stock is 6500 rpm's. Gram is setting his at 7000 rpm's I bellieve. So I guess somewhere around there would be good.
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08-05-2009, 10:45 PM | #3 |
daily driver
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there is a fuel cut around 6500rpm normally, but i wouldnt try going too much higher than that....maybe 6800....
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08-06-2009, 12:40 AM | #4 |
Slowy getting there
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Hes on a standalone he has probably changed all that or will when he decides on a red line
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08-06-2009, 02:10 PM | #5 |
Drives: Vitz RS Turbo Join Date: Nov 2008
Location: ML
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What can you comment about this GARM?
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01-08-2010, 10:37 AM | #6 |
1NZ-6spd
Drives: '05 6-Spd Vitz RS Join Date: Oct 2008
Location: Oshawa, Ontario, Canada
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I know from experience that the motor will not spin to 8600 due to a missed shift. Somehow went to 2nd from the top of 3rd instead of 4th.
The motor survived but had 3 mushroomed valves. |
01-08-2010, 11:43 AM | #7 |
Drives: Yaris Sedan Join Date: Sep 2006
Location: MayaWest, Puerto Rico
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I've seen like 5 of my friends miss-shift from 3rd to 2nd... thats why I granny-shift 3rd-4th
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I Drive a 129whp Yaris ;) |
01-08-2010, 11:49 AM | #8 |
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My head is ported and polished, but otherwise stock, no work to the cams or valves. My redline is set at 7200.
When you tune, just look for the power band, that will determine your redline. Higher is not always better. On my tC, it quits making power at 5800, so there's no need to set a super high redline on it.
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01-08-2010, 12:05 PM | #9 | |
daily driver
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Quote:
with intake and res-back exhaust, im past peak whp with stock redline...
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01-08-2010, 04:53 PM | #10 | |
Drives: Yaris LB Turbo Join Date: Aug 2006
Location: Miami FL
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Quote:
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01-08-2010, 04:54 PM | #11 |
Drives: Yaris LB Turbo Join Date: Aug 2006
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6000RPM-6500RPM max
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01-08-2010, 05:20 PM | #12 | |
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Quote:
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01-08-2010, 05:26 PM | #13 |
Drives: Yaris LB Turbo Join Date: Aug 2006
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01-09-2010, 01:17 PM | #14 | |
Drives: Vitz RS Turbo Join Date: Nov 2008
Location: ML
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Quote:
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01-09-2010, 02:49 PM | #15 |
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Ask Gude?
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01-09-2010, 03:46 PM | #16 |
Drives: Yaris LB Turbo Join Date: Aug 2006
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02-09-2010, 08:28 PM | #17 |
Drives: Yaris Join Date: Apr 2009
Location: Italy
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these are the oem camshafts value :
Engine: 1NZ-FE Valve Timing >Intake< Open -7° ~ 33° BTDC Close 52° ~ 12° ABDC ----------------------- >Exhaust< Open 42° BBDC Close 2° ATDC Intake durations : 225° Exaust durations : 224° |
02-09-2010, 11:17 PM | #18 |
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The point remains the same. It's wherever the car stops making power. I can't imagine a build on the 1NZ that would require 8k or 9k rpms, so the question doesn't hold much relevance for me.
besides camshafts, you better have springs and some other head work done to access higher rpms safely.
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