Question about intake temperatures and power? - 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 11-03-2008, 06:14 PM   #1
Ajb
Junior Member
Thread Starter
 
Join Date: Dec 2007
Location: United Kingdom
Posts: 103
Total Cats: 0
Default Question about intake temperatures and power?

I know this is a bit of an open ended question but for what kind of temperature drop do you need in your intake temperatures to get some form of noticeable improvement in power or throttle response?
Ajb is offline   Reply With Quote
Old 11-03-2008, 06:18 PM   #2
Elite Member
iTrader: (21)
 
paul's Avatar
 
Join Date: Jun 2006
Location: Point Pleasant, NJ
Posts: 2,957
Total Cats: 2
Default

I'd say you can feel a difference of 10 degrees ambient.
paul is offline   Reply With Quote
Old 11-03-2008, 09:39 PM   #3
Elite Member
iTrader: (12)
 
Join Date: Jan 2007
Location: Hermosa Beach, CA
Posts: 2,575
Total Cats: 11
Default

Quote:
Originally Posted by paul View Post
I'd say you can feel a difference of 10 degrees ambient.
I would agree. going from a cool 70 degree day to a warm 80 degree day, I boost a good one psi less. Not to mention stuff heats up quicker.
cardriverx is offline   Reply With Quote
Old 11-04-2008, 09:14 AM   #4
Ajb
Junior Member
Thread Starter
 
Join Date: Dec 2007
Location: United Kingdom
Posts: 103
Total Cats: 0
Default

Are intake temperatures about ambient with the set ups?
Ajb is offline   Reply With Quote
Old 11-04-2008, 09:30 AM   #5
Elite Member
iTrader: (12)
 
Join Date: Apr 2008
Location: Longs, SC
Posts: 2,583
Total Cats: 13
Default

Havent you ever taken a drive on a cool autumn day?
icantthink4155 is offline   Reply With Quote
Old 11-04-2008, 01:53 PM   #6
Elite Member
iTrader: (12)
 
Join Date: Jan 2007
Location: Hermosa Beach, CA
Posts: 2,575
Total Cats: 11
Default

Quote:
Originally Posted by Ajb View Post
Are intake temperatures about ambient with the set ups?
after a deicent amount of boosting I hit about 100 to 110 degrees with my intercooler.
cardriverx is offline   Reply With Quote
Old 11-04-2008, 01:54 PM   #7
Elite Member
iTrader: (5)
 
Join Date: Mar 2007
Location: NYC
Posts: 1,997
Total Cats: 1
Default

Quote:
Originally Posted by Ajb View Post
Are intake temperatures about ambient with the set ups?
most often they are above ambient.
johndoe is offline   Reply With Quote
Old 11-04-2008, 02:38 PM   #8
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,845
Total Cats: 1,787
Default

do the math. figure out the difference in temps and how much extra density you walk away with, then you'll know how much more oxygen you are burning.
Braineack is online now   Reply With Quote
Old 11-04-2008, 02:52 PM   #9
Miotta FTW!
iTrader: (24)
 
Splitime's Avatar
 
Join Date: Jun 2006
Location: Chicagoland, IL
Posts: 4,293
Total Cats: 26
Default

AITs are one reason I like oversized IC setups. I run almost ambient with my giant IC and Vmount setup. Nothing like boosting for 20 minutes straight on track and being within 8degrees of ambient.

Don't worry so much about the specific math of ait vs power... just realize that the cooler the charge... the denser the charge... the more powerful the charge (assuming the tune is proper)
Splitime is offline   Reply With Quote
Old 11-04-2008, 03:24 PM   #10
Ajb
Junior Member
Thread Starter
 
Join Date: Dec 2007
Location: United Kingdom
Posts: 103
Total Cats: 0
Default

Yep definatly sounds worthwhile , i just trying to work out how much gain could be made and also thinking of some cooling solutions.

After a play with a calculator i worked out that for 14psi of boost about every 10deg drop nets about 2% denser air not sure if thats correct though.
Ajb is offline   Reply With Quote
Old 11-04-2008, 10:55 PM   #11
Elite Member
iTrader: (21)
 
paul's Avatar
 
Join Date: Jun 2006
Location: Point Pleasant, NJ
Posts: 2,957
Total Cats: 2
Default

not only do you gain power but you reduce the likelihood of detonation as temps go down.
paul is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 57 07-19-2017 05:11 PM
My solution for Oiltemp and Oilpressure input into Megasuirt (MS3) Zaphod MEGAsquirt 41 01-24-2016 01:25 PM
Expected intake temps on the track? tazswing Race Prep 20 10-03-2015 12:04 PM
Moroso Air Oil Separator Catch Can Aroundcorner Miata parts for sale/trade 2 10-01-2015 04:20 PM
Going back to stock. Need some 1.6 parts. Trent WTB 2 10-01-2015 01:15 PM


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 05:56 PM.