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05-25-2015, 02:58 AM | #1 |
Drives: Vitz RS turbo M Join Date: Apr 2009
Location: Singapore
Posts: 15
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1nzfe valve and valve springs
Hi, I would like to check if anyone knows
Any online sales of ferrea valve and valve Springs for 1nzfe. Thanks |
05-25-2015, 11:19 PM | #2 |
Mr. 155 and climbing
Drives: Seriously Modded 07 Sedan Join Date: Jun 2006
Location: In The Hotbox
Posts: 4,742
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Good luck is all I can say. The only 2 vendors I am aware of closed up shop. You could still try Cali_yaris. Not sure if he has or can get them. I have the BC valve spring kit is it works fine. Unless you are going to be producing over 350whp and hage a turbo that doesn't deliver power until 5k+ and still has a power band that still carries over 8300k there really is no reason to dump over a grand in the ferrea kit.
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Team Tiamat Racing on Facebook Youtube Channel: Team Tiamat Racing Class record holder in Land Speed @ 154.5mph for 1.5 mile and 145.5mph in the mile in the F (2.016 to 3.014 L), G (1.524 to 2.015 L), and H (1.016 to 1.523 L) classes. |
10-19-2016, 12:17 AM | #3 |
Drives: Yaris Join Date: Sep 2015
Location: Coventry
Posts: 2
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Install 1ZZ-FE Valve Springs into 1NZ-FE
Not sure whether someone has asked for this matter. I have a Yaris NCP91 (Gen II, 5-door hatchback, 1.5 litre 1NZ-FE engine). Currently, I'm using stock valve springs and stock camshaft in the engine, and now the springs seem to be floating around 7000 rpm.
My friend told me that 1ZZ-FE valve springs can be a good subtitute for the stock valve springs. He said that the 1ZZ-FE valve springs are stiffer almost twice of the stock valve springs have. I know that aftermarket valve springs would be a better choice, but since I'm still using stock camshaft, I'm afraid that aftermarket valve springs would be too harsh for the stock camshaft (the camshaft and its lobes cannot withstand the pressure from the aftermarket valve springs). Has anyone ever installed 1ZZ-FE valve springs into 1NZ-FE engine?. Any issues?. |
10-19-2016, 12:46 AM | #4 | |
Drives: 2008 Red Toyota Yaris Join Date: Mar 2011
Location: MN
Posts: 76
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Quote:
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10-19-2016, 01:26 AM | #5 |
0-60 in slow
Drives: light blue liftback Join Date: Aug 2009
Location: so cal
Posts: 926
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Stock valve springs are good for at least 7800 rpms, 2az spring will bind I haven't tried 1zz springs but I imagine its probably the same. BC valve springs are too stiff for VVT. Stock cam is way out of steam before 7k rpm, I've got plenty of dyno sheets to prove it.
IIRC stock springs are 25lbs installed height and 50 lbs at .4" Brian Crower springs are 1.280 : 48-50 LBS .400” lift 105 lbs
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2014 BSpec Divisional Champion |
10-19-2016, 03:12 AM | #6 | ||
Drives: Yaris Join Date: Sep 2015
Location: Coventry
Posts: 2
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Quote:
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Since my cylinder head has been ported-and-polished and milled, will it limit the work of stock valve springs (valve springs float sooner)?. Or maybe, is it because my stock camshaft that cannot provide a longer "breathe" beyond 7000 rpms?. It is quite hard anyway to find aftermarket parts for Yaris in Indonesia these days, especially engine internal parts . |
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10-19-2016, 01:33 PM | #7 | |
0-60 in slow
Drives: light blue liftback Join Date: Aug 2009
Location: so cal
Posts: 926
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Quote:
Stock cams fall hard after 6200 rpm, I was making basically 50% less torque at 7k than I was at 6, they just don't work all that well up there. Valve float should be pretty easy to see on a dyno. Porting on Polishing won't really cause the valves to float sooner or later, thats more determined by the valve springs being run and the weight of the valvetrain, its quite possible your valve springs are simply worn out and can no longer hold tension.
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2014 BSpec Divisional Champion |
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10-19-2016, 02:48 PM | #8 | |
Drives: 2015 H Production Yaris Join Date: Oct 2009
Location: Debary, FL
Posts: 1,953
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Quote:
Peak power with my cams is around 7200-7500rpm, one engine has a regrind, the other has the 9.5mm Jun cams. You need proper engine management.
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2005-2008 SCCA Solo BS National Champion 2017-2018 SCCA H Prod National Champion |
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10-19-2016, 07:09 PM | #9 | |
Mr. 155 and climbing
Drives: Seriously Modded 07 Sedan Join Date: Jun 2006
Location: In The Hotbox
Posts: 4,742
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Quote:
Sent from m-o-b-i-l-e
__________________
Team Tiamat Racing on Facebook Youtube Channel: Team Tiamat Racing Class record holder in Land Speed @ 154.5mph for 1.5 mile and 145.5mph in the mile in the F (2.016 to 3.014 L), G (1.524 to 2.015 L), and H (1.016 to 1.523 L) classes. |
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