View Full Version : Throttle area conversion from 78mm to 90mm.
PRAY
January 22nd, 2008, 02:26 AM
What is the correct Throttle Area Conversion for a 90mm TB? I think stock it is .2xx. I was running .320 but I read it was .330 some where else. So what is the correct number to put in that table? I don't have the table number in front of me but I can post it up later if no one knows what I am talking about.
Brett
Ninety8C5
January 22nd, 2008, 12:39 PM
This was in another post about resizing TB. I don't remember which and can't find it right now.
PRAY
January 22nd, 2008, 02:09 PM
The attachment won't open. It says it is corrupted. So if you could find the number I would really appreciate it.
Thanks,
Brett
Ninety8C5
January 22nd, 2008, 03:07 PM
According to the spreadsheet the increase should be 133%.
Bruce Melton
January 22nd, 2008, 11:52 PM
I used .0330 for 402 ci and .0355 for 427/441. I think all you are really doing is cracking the TB blade for idle., but it works if you need it.
PRAY
January 23rd, 2008, 12:13 AM
Thanks. That is what I was looking for. I actually think it was one of your posts that I was reading that gave me the .0330. I am running a pretty big cam for my 383 so it is demanding air. I will mess with that and see what happens.
I will also do the math for 133% and see what that comes up to.
Thanks guys.
Brett
Powered by vBulletin® Version 4.2.5 Copyright © 2024 vBulletin Solutions Inc. All rights reserved.