Greddy TD04 actuater adjustment - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


DIY Turbo Discussion greddy on a 1.8? homebrew kit?

Reply
 
 
 
LinkBack Thread Tools
Old 11-01-2012, 05:49 PM   #1
Junior Member
Thread Starter
iTrader: (1)
 
Join Date: Nov 2010
Posts: 55
Total Cats: 0
Arrow Greddy TD04 actuater adjustment

Hello guys,

I recently bought a used Greddy turbo kit from a local for a fair price and was inspecting all parts look for any cracks and damages. All parts seem to be in ok condition and turbo does have minimum shaft play to it but guessing it should have plenty of life left on her. I did inspect the actuator that is bolted up to the turbo and saw that it was adjusted shorter (towards actuater canistor or nipple). From what i researched adjusting it shorter changes the pre load for more boost Correct???? My question is how to i set it back to the factory actuator setting? how many turns does it take from full pre load to factory setting get the 5psi setting.
Attached Thumbnails
Greddy TD04 actuater adjustment-pix2.jpg   Greddy TD04 actuater adjustment-pix3.jpg  
rotary84 is offline   Reply With Quote
Old 11-01-2012, 06:03 PM   #2
Cpt. Slow
iTrader: (25)
 
curly's Avatar
 
Join Date: Oct 2005
Location: Oregon City, OR
Posts: 12,110
Total Cats: 518
Default

It's going to be different for every car and every turbo. They were known from the factory to deliver anything from 4.5-6 psi. Drive around once it's running and adjust as needed.
curly is offline   Reply With Quote
Old 11-01-2012, 06:30 PM   #3
Junior Member
Thread Starter
iTrader: (1)
 
Join Date: Nov 2010
Posts: 55
Total Cats: 0
Default

I see, ya last thing i want is overboosting with the vortech fmu i have. definitely want to play it as safe for now untill i upgrade in the future.
rotary84 is offline   Reply With Quote
Old 11-01-2012, 06:49 PM   #4
Cpt. Slow
iTrader: (25)
 
curly's Avatar
 
Join Date: Oct 2005
Location: Oregon City, OR
Posts: 12,110
Total Cats: 518
Default

Well, then screw it out first. This isn't rocket science.
curly is offline   Reply With Quote
Old 11-01-2012, 07:24 PM   #5
Senior Member
iTrader: (5)
 
Join Date: Sep 2009
Location: Lompoc, CA
Posts: 579
Total Cats: 12
Default

Just adjust it out until the flapper is held closed snugly but not really tight. There should be some point where the actuator is loose and the flapper has some play and isn't all the way closed. A half turn out makes the flapper open a hair and a half turn back barely holds the door closed. That's where you want to be, anything beyond is adding "pre-load". Like Curly said, it's not rocket science, it only moves in half turn increments.
baron340 is offline   Reply With Quote
Old 11-01-2012, 10:19 PM   #6
Junior Member
Thread Starter
iTrader: (1)
 
Join Date: Nov 2010
Posts: 55
Total Cats: 0
Default

ok i will adjust it it when i get home. Ill be sure to add some play on the adjustement. Thanks again guys
rotary84 is offline   Reply With Quote
Old 11-02-2012, 09:35 AM   #7
Cpt. Slow
iTrader: (25)
 
curly's Avatar
 
Join Date: Oct 2005
Location: Oregon City, OR
Posts: 12,110
Total Cats: 518
Default

Something that hasn't been mentioned, the stock wastegate actuator SUCKS. My needle bounced all over the place until I replaced it. Found some generic SR20 wastegate I believe, rigged it up with one bolt like the greddy setup, and it held much steadier.
curly is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
OTS Bilstein to motorsports ASN conversion stoves Suspension, Brakes, Drivetrain 5 04-21-2016 04:00 PM
Someone help me with AE ihiryu MEGAsquirt 33 10-08-2015 05:56 PM
MSPNPPro-MM0105: Coolant Temperature Output slomiata MEGAsquirt 5 10-07-2015 02:11 PM


Tags
actuator, greddy, pre load, preload, psi adjustment

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 08:55 AM.