What do you start with when building an engine? - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Engine Performance This section is for discussion on all engine building related questions.
Sponsored by:
Sponsored by:

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 07-14-2009, 02:51 PM   #21
Tour de Franzia
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,114
Total Cats: 351
Default

Quote:
Originally Posted by y8s View Post
you must have missed it i guess. probably sitting in the corner shaking wondering if 8.6:1 compression was going to make your car a dog.

anyway, at the same boost level, advancing the intake cam gained me at least 30 ft lbs (max 40ish) from 3k to 4k with positive gains from 2500-4500. similarly retarding the cam at the top end made a difference of 60 hp.

look at the graph again:
http://y8spec.com/dyno/taleoftwoturbos.jpg
green = retarded
red = advanced
both runs are at 9.5 psi. same dyno, same day. mixture was not ideal due to the drastic changes in VE.
basically the VVT allows me to take the tallest curve on each side. red on the left, green on the right.

here's a comparison of the idealized VVT curve from those two graphs and photoshop (though in practice it should be the same) against TurboTim's twins. I forget what boost he was at.
http://y8spec.com/dyno/twins_vs_2876.gif
blah blah blah, you're a retard.
hustler is offline   Reply With Quote
Old 07-14-2009, 02:53 PM   #22
y8s
2 Props,3 Dildos,& 1 Cat
iTrader: (8)
 
y8s's Avatar
 
Join Date: Jun 2005
Location: Fake Virginia
Posts: 19,038
Total Cats: 407
Default

Quote:
Originally Posted by hustler View Post
blah blah blah, you're a retard.
you can do better than that.
y8s is offline   Reply With Quote
Old 07-14-2009, 02:57 PM   #23
meatbag
iTrader: (50)
 
gospeed81's Avatar
 
Join Date: Nov 2008
Location: Houston, TX
Posts: 7,357
Total Cats: 26
Default

Quote:
Originally Posted by y8s View Post
you can do better than that.
The estrogen injections must be getting to him.
gospeed81 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
elesjuan's mediocre 95 Miata adventure (google fiber edition) elesjuan Build Threads 8 02-16-2016 09:36 PM
The "just have fun build" nelson8708 Build Threads 9 09-26-2015 10:07 AM
In what world... curly MEGAsquirt 11 09-22-2015 12:54 PM
AFR Not showing anything eunosgippa MEGAsquirt 0 09-09-2015 06:19 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 Search this Thread
Search this Thread:

Advanced Search

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 05:33 PM.