The Ultimate GReddy Turbo Kit Thread
Joined: Dec 2007
Posts: 3,641
Likes: 1
From: Gaithersburg, MD
I heard about the actuators failing but never encountered one myself.
You can buy it as a separate piece:
P765/ silvia actuator
http://cgi.ebay.com/ebaymotors/_Car-Truck-...A1%7C240%3A1318
You can buy it as a separate piece:
P765/ silvia actuator
http://cgi.ebay.com/ebaymotors/_Car-Truck-...A1%7C240%3A1318
Joined: Jan 2008
Posts: 9,570
Likes: 3
From: New Jersey
If the actuator failed, I think you wouldnt be bossting at all, or the spool would be soooooooooooooo long. When I pulled my turbo off I re-adjusted the actuater arm to 3 turns I believe, there is a thread on here exactly what I did, but it solved all of my Spiking issues, I mean I spike a little bit now, but its only when I floor it right at my Torque peak and its cold out, I used to Spike +2psi to what i was set at, cause the actuator arm was set too tight from the factory. It really isnt hard to pull the turbo on this kit and adjust the arm, took me a few hours with a rachet set, some wrenches and PB Blaster
Luck77
When I had a Test Pipe it wouldnt creep at all until it was like 55 outside, I mean 60 it was fine, 54F it would BOOST all the way up to 20PSI
, was it abnormally cold?
What you could do to BANDAID fix it is set the actuator to way way loose, so it would crack the wastegate open early, however that would really slow down the SPOOL, but agian we dont know what the problem is either, good luck
Luck77
When I had a Test Pipe it wouldnt creep at all until it was like 55 outside, I mean 60 it was fine, 54F it would BOOST all the way up to 20PSI
, was it abnormally cold?What you could do to BANDAID fix it is set the actuator to way way loose, so it would crack the wastegate open early, however that would really slow down the SPOOL, but agian we dont know what the problem is either, good luck
Joined: Dec 2007
Posts: 1,715
Likes: 1
From: Mill Creek, WA
Originally Posted by lucky77,Dec 22 2008, 06:49 AM
Have encountered a slight issue , wondering if anybody has got any ideas.
Out driving on sat night when i floored it and suddenly hit boost cut. Looked on my EVC and saw i had spiked to 19psi. Turned down the boost and gain and same thing happened. Had a look at the turbo yesterday and put a hand pump onto the actuator and it didnt open till about 2.2 bar. After it cracked loose it would open sometimes at 7psi sometimes at 10psi. Took it back out for a test drive and the first couple of times it would sit at actuator then it would just want to keep boosting. I checked to see if the wastegate flapper was fouling on the new downpipe but its clear. All the big UK supplier of greddy/mitsubishi turbo parts has shut for xmas now. Do you think i will be able to buy a new actuator as a separate piece for this and do you think my diagnosis is correct or do you have any ideas what else is worth checking? Didnt think actuator failure was a common occurence.
My car runs about 12psi of boost so do you think it would be preferable to run a higher rate actuator if one is available or not worth it?
Out driving on sat night when i floored it and suddenly hit boost cut. Looked on my EVC and saw i had spiked to 19psi. Turned down the boost and gain and same thing happened. Had a look at the turbo yesterday and put a hand pump onto the actuator and it didnt open till about 2.2 bar. After it cracked loose it would open sometimes at 7psi sometimes at 10psi. Took it back out for a test drive and the first couple of times it would sit at actuator then it would just want to keep boosting. I checked to see if the wastegate flapper was fouling on the new downpipe but its clear. All the big UK supplier of greddy/mitsubishi turbo parts has shut for xmas now. Do you think i will be able to buy a new actuator as a separate piece for this and do you think my diagnosis is correct or do you have any ideas what else is worth checking? Didnt think actuator failure was a common occurence.
My car runs about 12psi of boost so do you think it would be preferable to run a higher rate actuator if one is available or not worth it?
Registered User
Joined: May 2005
Posts: 1,947
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From: Sussex
Thanks for the feedback. Im going to strip it out tommorow, lube it up and check actuator adjustment and maybe it will do the trick. If not at least i know i can get a replacement for not a lot of money 
Thread Starter
Joined: Sep 2006
Posts: 7,643
Likes: 103
From: Irvine
hi,
regarding the overboosting, i have not run into any bad actuators, there were some turbos with bad flapper arms though. The arm would not open all the way, causing overboost. when you remove the turbo, disconnect the actuator from the flapper and check that the flapper can open completely without friction.
regarding the overboosting, i have not run into any bad actuators, there were some turbos with bad flapper arms though. The arm would not open all the way, causing overboost. when you remove the turbo, disconnect the actuator from the flapper and check that the flapper can open completely without friction.
Joined: Dec 2007
Posts: 3,641
Likes: 1
From: Gaithersburg, MD
Registered User
Joined: Jan 2008
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so i was planning on getting this kit and dropping it in after i get the 90,000 tune up from honda...but my question is if i put the kit in and have a 3mm head gasket and a good tune will the car be good to daily drive with a good tune? or do you guys recommend some other supporting mods and what? car is an 01 with about 86k plan on putting the kit in around summer time ...thanks for letting me ask my question if you guys dont mind me asking this real quick? 
not trying to thread jack......
not trying to thread jack......
Registered User
Joined: Mar 2006
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From: socal
Originally Posted by Josh_With_The_S2K' date='Dec 30 2008, 07:23 PM
so i was planning on getting this kit and dropping it in after i get the 90,000 tune up from honda...but my question is if i put the kit in and have a 3mm head gasket and a good tune will the car be good to daily drive with a good tune? or do you guys recommend some other supporting mods and what? car is an 01 with about 86k plan on putting the kit in around summer time ...thanks for letting me ask my question if you guys dont mind me asking this real quick? 
not trying to thread jack......
not trying to thread jack......greddy kit is designed for stock compression to gain the most out of it..
get a slightly larger exh, 70mm and up and a hfc, u'll be good to go!