I don't always tune n/a cars, but when i do, i make sure they belch black smoke - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


General Miata Chat A place to talk about anything Miata

Reply
 
 
 
LinkBack Thread Tools
Old 09-24-2013, 10:11 AM   #21
Elite Member
iTrader: (1)
 
Leafy's Avatar
 
Join Date: Jun 2012
Location: NH
Posts: 9,091
Total Cats: 90
Default

Quote:
Originally Posted by nitrodann View Post
The real truth is that I tuned it.

Hopefully that explains everything.

Dann
The dyno graph isnt upside down.
Leafy is offline   Reply With Quote
Old 09-24-2013, 10:18 AM   #22
Elite Member
 
Join Date: Apr 2010
Location: Newcastle, Australia
Posts: 2,638
Total Cats: 25
Default

Yes it is.

Dann
nitrodann is offline   Reply With Quote
Old 09-24-2013, 10:22 AM   #23
Elite Member
iTrader: (5)
 
Erat's Avatar
 
Join Date: Oct 2011
Location: Detroit
Posts: 4,196
Total Cats: 260
Default

Quote:
Originally Posted by nitrodann View Post
Yes it is.

Dann
It would be for you, we see things right side up here.
Erat is offline   Reply With Quote
Old 09-24-2013, 10:25 AM   #24
Elite Member
 
Join Date: Apr 2010
Location: Newcastle, Australia
Posts: 2,638
Total Cats: 25
Default

Nah, its the right way up from here so it must be upside down over there.
See?



Dann
nitrodann is offline   Reply With Quote
Old 09-24-2013, 10:27 AM   #25
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,857
Total Cats: 1,788
Default

Quote:
Originally Posted by nitrodann View Post
The real truth is that I tuned it.

Hopefully that explains everything.

Dann

if you tuned it, it would be making 7523 ft-lbs and be posted upside down.

wasn't there another issue with an STP dyno posted here? Oh yeah, it was another TDR car when he posted here and we didnt give a ****.
Braineack is offline   Reply With Quote
Old 09-24-2013, 10:27 AM   #26
Moderator
iTrader: (11)
 
sixshooter's Avatar
 
Join Date: Nov 2008
Location: Tampa, Florida
Posts: 15,664
Total Cats: 1,560
Default

Quote:
Originally Posted by nitrodann View Post
Yes it is.
Dann
Haha!

Colin Hay is performing tonight over here in Largo, Florida. I wondered if he would be more comfortable playing guitar while standing on his head.

sixshooter is offline   Reply With Quote
Old 09-24-2013, 10:35 AM   #27
Elite Member
iTrader: (2)
 
Join Date: Aug 2012
Location: Indianapolis
Posts: 3,325
Total Cats: 235
Default

Quote:
Originally Posted by mgeoffriau View Post
I like the direction that thread has taken. Now multiple posters are saying that discussing AFR's, tuning, and reliability constitute "trolling", and that all they care about is seeing dyno results.
That is the TUNING section, there will be no discussions of tuning!
thenuge26 is offline   Reply With Quote
Old 09-24-2013, 10:36 AM   #28
Elite Member
 
Join Date: Apr 2010
Location: Newcastle, Australia
Posts: 2,638
Total Cats: 25
Default

Quote:
Originally Posted by Braineack View Post
if you tuned it, it would be making 7523 ft-lbs
You KNOW it.



By the way I asked for some measured data on VVT over there.

Is VVT usually capable of being tuned as opposed to just switched on and off at different RPM? I was under the impression that all VVT ran from oil pressure on a solenoid, or is that Oldschool now?

What components allows the VVT angle to be changed as opposed to open and closed?

Dann
nitrodann is offline   Reply With Quote
Old 09-24-2013, 11:05 AM   #29
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,857
Total Cats: 1,788
Default

Quote:
Originally Posted by nitrodann View Post
What components allows the VVT angle to be changed as opposed to open and closed?
the stock ones.
Braineack is offline   Reply With Quote
Old 09-24-2013, 11:15 AM   #30
Elite Member
 
Join Date: Apr 2010
Location: Newcastle, Australia
Posts: 2,638
Total Cats: 25
Default

... That doesn't explain anything at all.

Cheers,
Dann
nitrodann is offline   Reply With Quote
Old 09-24-2013, 11:19 AM   #31
Elite Member
iTrader: (1)
 
Leafy's Avatar
 
Join Date: Jun 2012
Location: NH
Posts: 9,091
Total Cats: 90
Default

Quote:
Originally Posted by nitrodann View Post
... That doesn't explain anything at all.

Cheers,
Dann
vvt is not vtec. It normally works with some sort of mechamism that allows the angle of the cam to change relatively to the cam pulley.
Leafy is offline   Reply With Quote
Old 09-24-2013, 11:21 AM   #32
Elite Member
 
Join Date: Apr 2010
Location: Newcastle, Australia
Posts: 2,638
Total Cats: 25
Default

I understand that fully, its usually powered by oil pressure and that pressure is controlled with a solenoid, I just cannot think of how the 'new modern' way of doing it that allows it to be stepped in angle, as opposed to naturally sit in one setting on a stop, and then have oil pressure push it to the stop a few degrees around.

Dann
nitrodann is offline   Reply With Quote
Old 09-24-2013, 11:24 AM   #33
Elite Member
iTrader: (1)
 
Leafy's Avatar
 
Join Date: Jun 2012
Location: NH
Posts: 9,091
Total Cats: 90
Default

the solenoid turns on and off very quickly, just like boost control you dont think an ebc has only wastegate pressure or ALLOFIT do you?
Leafy is offline   Reply With Quote
Old 09-24-2013, 11:25 AM   #34
Elite Member
Thread Starter
iTrader: (3)
 
concealer404's Avatar
 
Join Date: Aug 2011
Posts: 8,464
Total Cats: 782
Default

True variable VVT (IE, not an on/off switch) has been around for quite some time.
concealer404 is online now   Reply With Quote
Old 09-24-2013, 11:26 AM   #35
Elite Member
 
Join Date: Apr 2010
Location: Newcastle, Australia
Posts: 2,638
Total Cats: 25
Default

No, but having pulled apart VVT setups before I just dont see that accurately controlling angle, I mean, against something as irregularly shaped as a cam at xyz rpm and you are just going to PWM it to a specific angle with constantly changing oil pressure?

Dann
nitrodann is offline   Reply With Quote
Old 09-24-2013, 11:30 AM   #36
Elite Member
 
Join Date: Apr 2010
Location: Newcastle, Australia
Posts: 2,638
Total Cats: 25
Default

Quote:
Originally Posted by concealer404 View Post
True variable VVT (IE, not an on/off switch) has been around for quite some time.
Awesome, do you know how it works?

Dann
nitrodann is offline   Reply With Quote
Old 09-24-2013, 11:31 AM   #37
Elite Member
iTrader: (1)
 
Leafy's Avatar
 
Join Date: Jun 2012
Location: NH
Posts: 9,091
Total Cats: 90
Default

Quote:
Originally Posted by nitrodann View Post
No, but having pulled apart VVT setups before I just dont see that accurately controlling angle, I mean, against something as irregularly shaped as a cam at xyz rpm and you are just going to PWM it to a specific angle with constantly changing oil pressure?

Dann
Yes, because closed loop controls are awesome.
Leafy is offline   Reply With Quote
Old 09-24-2013, 11:32 AM   #38
Elite Member
Thread Starter
iTrader: (3)
 
concealer404's Avatar
 
Join Date: Aug 2011
Posts: 8,464
Total Cats: 782
Default

Quote:
Originally Posted by nitrodann View Post
Awesome, do you know how it works?

Dann

I don't know how it works on the NC, because i don't have an NC, and therefor, i don't care.
concealer404 is online now   Reply With Quote
Old 09-24-2013, 11:36 AM   #39
Elite Member
 
Join Date: Apr 2010
Location: Newcastle, Australia
Posts: 2,638
Total Cats: 25
Default

Lol.

if someone knows or has a link to some pics Id be very interested, I have an NC racecar parked 4 metres from me right now, but I dont really want to pull it that far down and risk having to replace seals and **** just to understand.

Dann
nitrodann is offline   Reply With Quote
Old 09-24-2013, 11:36 AM   #40
Senior Member
iTrader: (8)
 
Join Date: Jan 2012
Location: Azusa, CA
Posts: 1,376
Total Cats: 80
Default

Quote:
Originally Posted by nitrodann View Post
Awesome, do you know how it works?

Dann
sounds similar to honda's i-vtec





I'm trying to find the video I saw once that uses pneumatic valves which allows all valves in the head to be independently controlled from each other unlike a camshaft. It's a true Variable Valve Timing system. Pretty neat stuff. Just can't remember what the video was titled


EDIT: Found it

cyotani is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Turbo 1995 Miata Low mileage Clean Tekel Cars for sale/trade 29 02-05-2016 05:16 PM
Mystery Engine Trouble. Halp, mt.net! vehicular General Miata Chat 12 09-14-2015 04:17 PM
Now shipping NC MX-5 (2006-15) Precision Sliding Seat Mounts FAB Fab9 Tuning - Miata Performance Parts 0 09-11-2015 01:02 PM
New here, saying hi, here's what I'm workin with. SuperSneakySecretSquirrel Meet and Greet 5 09-06-2015 09:30 PM
ME221 Now has Autotune and Long Term Fuel Trim Tables Motorsport-Electronics ECUs and Tuning 0 09-05-2015 09:02 AM


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 04:39 PM.