1NZFE Safe REV limit - Toyota Yaris Forums

Parmas · 08-05-2009, 08:01 PM

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 )

lilredrocket · 08-05-2009, 10:20 PM

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.

thebarber · 08-05-2009, 10:45 PM

there is a fuel cut around 6500rpm normally, but i wouldnt try going too much higher than that....maybe 6800....

lilredrocket · 08-06-2009, 12:40 AM

Hes on a standalone he has probably changed all that or will when he decides on a red line

Parmas · 08-06-2009, 02:10 PM

What can you comment about this GARM?

Bluevitz-rs · 01-08-2010, 10:37 AM

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.

YarisPR · 01-08-2010, 11:43 AM

Quote:

Originally Posted by Bluevitz-rs

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.

I've seen like 5 of my friends miss-shift from 3rd to 2nd... thats why I granny-shift 3rd-4th

cali yaris · 01-08-2010, 11:49 AM

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.

thebarber · 01-08-2010, 12:05 PM

Quote:

Originally Posted by cali yaris

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.

thats true

with intake and res-back exhaust, im past peak whp with stock redline...

cdydjded · 01-08-2010, 04:53 PM

Quote:

Originally Posted by cali yaris

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.

Porting and polishing you head does not change your max redline. Based upon your dyno sheet & the barber's dyno sheet our engines make max HP @ 6000rpm and start to loose power beyond 6500rpm. The reason is the camshaft specs specifically duration. IMO you do not need to be anywhere near 7200rpm. IMO 6500rpm should be you redline.

cdydjded · 01-08-2010, 04:54 PM

Quote:

Originally Posted by Parmas

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 and boosted 16psi till now :)

6000RPM-6500RPM max

cali yaris · 01-08-2010, 05:20 PM

Quote:

Porting and polishing you head does not change your max redline.

right. my point was that i have NOT modified my cams or valves, and that the car doesn't make power past 6500.

cdydjded · 01-08-2010, 05:26 PM

Quote:

Originally Posted by cali yaris

right. my point was that i have NOT modified my cams or valves, and that the car doesn't make power past 6500.

No problem, just was making sure that people dont confused

Parmas · 01-09-2010, 01:17 PM

Quote:

Originally Posted by cdydjded

Porting and polishing you head does not change your max redline. Based upon your dyno sheet & the barber's dyno sheet our engines make max HP @ 6000rpm and start to loose power beyond 6500rpm. The reason is the camshaft specs specifically duration. IMO you do not need to be anywhere near 7200rpm. IMO 6500rpm should be you redline.

What if one own the Gude head?

cali yaris · 01-09-2010, 02:49 PM

Ask Gude?

cdydjded · 01-09-2010, 03:46 PM

Quote:

Originally Posted by Parmas

What if one own the Gude head?

What was done to the head? Cams? Springs? Valves?

Giupo · 02-09-2010, 08:28 PM

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°

cali yaris · 02-09-2010, 11:17 PM

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.

08-05-2009, 08:01 PM	#1
Parmas Drives: Vitz RS Turbo Join Date: Nov 2008 Location: ML Posts: 576	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
lilredrocket Slowy getting there View User's Garage Drives: 08 Liftback Join Date: Nov 2008 Location: DFW, Texas Posts: 1,464	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. __________________

08-05-2009, 10:45 PM	#3
thebarber daily driver View User's Garage Drives: the #wrecho Join Date: Jun 2006 Location: Grand Rapids, MI Posts: 5,877	there is a fuel cut around 6500rpm normally, but i wouldnt try going too much higher than that....maybe 6800.... __________________

08-06-2009, 12:40 AM	#4
lilredrocket Slowy getting there View User's Garage Drives: 08 Liftback Join Date: Nov 2008 Location: DFW, Texas Posts: 1,464	Hes on a standalone he has probably changed all that or will when he decides on a red line __________________

01-08-2010, 11:49 AM	#8
cali yaris ULTIMATE View User's Garage Drives: 07 Yaris Turbo Join Date: May 2007 Location: Canoga Park, CA Posts: 14,859	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. __________________ Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific.

08-06-2009, 02:10 PM	#5
Parmas Drives: Vitz RS Turbo Join Date: Nov 2008 Location: ML Posts: 576	What can you comment about this GARM?

01-08-2010, 10:37 AM	#6
Bluevitz-rs 1NZ-6spd View User's Garage Drives: '05 6-Spd Vitz RS Join Date: Oct 2008 Location: Oshawa, Ontario, Canada Posts: 2,967	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.

01-09-2010, 02:49 PM	#15
cali yaris ULTIMATE View User's Garage Drives: 07 Yaris Turbo Join Date: May 2007 Location: Canoga Park, CA Posts: 14,859	Ask Gude? __________________ Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific.

02-09-2010, 08:28 PM	#17
Giupo Drives: Yaris Join Date: Apr 2009 Location: Italy Posts: 77	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
cali yaris ULTIMATE View User's Garage Drives: 07 Yaris Turbo Join Date: May 2007 Location: Canoga Park, CA Posts: 14,859	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. __________________ Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific.

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