HAMMER DOWN Posted October 20, 2011 Share Posted October 20, 2011 These are pics. of my VF40 turbo with almost 175k on it. The waste gate valve is off center about 0.030". Is this normal, just wondering. I have no problem hit or holding boost target. I'm thinking it mite be made that way to help with boost creep. What do you guys think. Mike http://i99.photobucket.com/albums/l293/HAMMERDOWNGT/Subaru/0906112134.jpghttp://i99.photobucket.com/albums/l293/HAMMERDOWNGT/Subaru/0908111020a.jpg Mileage:331487 Retired/Sold Link to comment Share on other sites More sharing options...
TRSCobra Posted October 20, 2011 Share Posted October 20, 2011 IIRC boost creep occurs when the wastegate can't flow enough when it's wide open. I don't think leaking when it's supposed to be closed would affect that. Looks like it doesn't line up right. Link to comment Share on other sites More sharing options...
GTTuner Posted October 20, 2011 Share Posted October 20, 2011 Did the WG flapper bushing on the outside of the housing back out? See this a lot. Link to comment Share on other sites More sharing options...
Scotty Posted October 20, 2011 Share Posted October 20, 2011 Well, it's normal among high mileage turbos. There has been quite a few. Check your logs. Typically you won't make the usual boost on low end, and too high on the high end. 3rd gear log, mine would do about 6 psi at 3500 and hit 16 at redline. Link to comment Share on other sites More sharing options...
HAMMER DOWN Posted October 20, 2011 Author Share Posted October 20, 2011 Ok, thanks. Do some more check & some logs. When it was cold. I check for WG shaft play & there was none. I try again when the turbo is hot. If I can feel any play. Mike Mileage:331487 Retired/Sold Link to comment Share on other sites More sharing options...
jfg22557 Posted October 22, 2011 Share Posted October 22, 2011 'Wastegate' shaft play:confused: Link to comment Share on other sites More sharing options...
HAMMER DOWN Posted October 22, 2011 Author Share Posted October 22, 2011 My waste gate valve is off center of the valve seat, about 0.030. The play I'm looking for. Is how easy the WG shaft moves in & out. causing it to be misaligned. No play when cold. Need to check when hot. If there no play then. Then it was assemble this way from the factory. Mileage:331487 Retired/Sold Link to comment Share on other sites More sharing options...
jfg22557 Posted October 23, 2011 Share Posted October 23, 2011 Don't mean to nitpick with the terminology, but are you referring to the wg actuator arm? Seems like GTT is on the right diagnosis track. IHI may not have the absolute BEST qc reputation, but I doubt it was assembled with the flapper that far off center. While your in there with the dp off (even though this isn't directly related to the matter at hand), how is the main shaft play with 175k just out of curiosity? *edit* I try again when the turbo is hot. Link to comment Share on other sites More sharing options...
HAMMER DOWN Posted October 23, 2011 Author Share Posted October 23, 2011 None that I can feel or see by using my finger. Yes the WG shaft that the flapper is welded to. I can"t move it, in & out when cold. I'll try when it's hot. With 15k OCI, it will be ironic that I replace my turbo for this. And have zero shaft play on the turbine shaft.:spin: Mike Mileage:331487 Retired/Sold Link to comment Share on other sites More sharing options...
Max Capacity Posted October 23, 2011 Share Posted October 23, 2011 Just walked out to the shed, my old vf40, the waste gate covers the whole port and the arm has about .020 play. (up/dn,in/out) IMO just enough to let it open and close smoothly. I doubt it's much more play then new. How did the Tune work out ? (Mike closed on his house Friday.) 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
HAMMER DOWN Posted October 23, 2011 Author Share Posted October 23, 2011 Don't know. I haven't got it yet. If he's closing on his house last week. He mite of had not enough time the tweak their TA AP tune for my Mods. Mileage:331487 Retired/Sold Link to comment Share on other sites More sharing options...
Max Capacity Posted October 23, 2011 Share Posted October 23, 2011 Don't know. I haven't got it yet. If he's closing on his house last week. He mite of had not enough time the tweak their TA AP tune for my Mods. In his defense, I will say he looked to be in a hurry when I saw him the Lowe's parking lot. I have to say, I don't think I've ever seen him walking so fast. He normally fit's into the Tuner profile, never seems to get excited, looks at things, analyzes them, then makes a decision. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
HAMMER DOWN Posted October 23, 2011 Author Share Posted October 23, 2011 No need to defend him. I figured it would be at least a week. All is good. Thanks again for the tip. Mileage:331487 Retired/Sold Link to comment Share on other sites More sharing options...
HAMMER DOWN Posted October 29, 2011 Author Share Posted October 29, 2011 I think I found the problem. Look at my pic(top) & Max Capacity pic.(bottom) Look at the size difference in the spacer used between the waste gate flapper & the turbo housing wall. I think mine was assemble wrong from the factory. http://i99.photobucket.com/albums/l293/HAMMERDOWNGT/Subaru/0908111020a.jpghttp://i185.photobucket.com/albums/x40/92Si/DSCN4603.jpg Mileage:331487 Retired/Sold Link to comment Share on other sites More sharing options...
chris_lgt Posted November 18, 2012 Share Posted November 18, 2012 i dont have that spacer either. what did you do about it? i saw you sent me the link to bnr, im guessing he helped? thanks for respondin to my thread Link to comment Share on other sites More sharing options...
HAMMER DOWN Posted November 18, 2012 Author Share Posted November 18, 2012 ^^^Done nothing, it still work fine. I linked BNR, because he as the best bang for your buck turbo replacement & IIRC can also rebuilds your stock turbo. Call & talk to him. Mike Mileage:331487 Retired/Sold Link to comment Share on other sites More sharing options...
HAMMER DOWN Posted June 8, 2014 Author Share Posted June 8, 2014 Update, waste gate finally it hit the wall. http://i99.photobucket.com/albums/l293/HAMMERDOWNGT/0523141311_zps5cf4c281.jpg Sense I'm going to replace it with a VF-52. I decide to see if I can move the waste gate back where it belongs. Success; http://i99.photobucket.com/albums/l293/HAMMERDOWNGT/ae0f2de2-18d4-4fda-a5fc-3c6edc35fb14_zps590d2b61.jpg Tools: -Oxy-Acetylene torch with rosebud or cut torch -hammer -drill with 1/8" & 3/16 bit -3/16"x3/4" new roll pin -Good bench vise Directions; -Remove turbo from car. -Remove turbine (hot side) housing from turbo assy. -Clamp in vise -Drill out roll pin, 1/8" bit (see green arrow). That hold waste gate sleeve place. -Heat turbine housing around the waste sleeve area, until cherry red. -Hit wastes gate arm with hammer (The small arm welded to Waste gate Swing Valve Linkage), why'll the housing is red hot. Until waste gate flap is centered. Note: This mite take a couple heating & beatings to get it done. -Once centered, let housing cool. After it cooled, dill out roll pin hole to 3/16". ( Went with bigger roll pin to catch more of the waste gate sleeve. Sense the smaller roll pin failed to hold waste gate sleeve in place). -Hammer home new roll pin, until flush with surface. Note:Make sure your waste gate moves freely, before reassembly. Disclaimer: Do it at your own risk. I'm replacing my turbo & had nothing to lose. But was successful in re-centering waste gate flapper valve, With no damage to turbine housing & waste gate swing valve linkage. Mileage:331487 Retired/Sold Link to comment Share on other sites More sharing options...
evil03mustang Posted June 8, 2014 Share Posted June 8, 2014 What are you doing with the old one? Link to comment Share on other sites More sharing options...
HAMMER DOWN Posted June 9, 2014 Author Share Posted June 9, 2014 What are you doing with the old one? Running it until I can get my VF-52 from Six Star Speed with their high performance CHRA. http://www.6starspeed.com/vfwrtu.html They are currently out of stock. And see if they give me $100 core refund. Like they offer if I bought their VF40-5R http://www.6starspeed.com/vfrhbabecoup.html Mileage:331487 Retired/Sold Link to comment Share on other sites More sharing options...
onlylegacys Posted June 9, 2014 Share Posted June 9, 2014 my original turbo seemed to have been missing that spacer as well. maybe there is a significant percentage of us who've encountered this same problem? Link to comment Share on other sites More sharing options...
HAMMER DOWN Posted June 9, 2014 Author Share Posted June 9, 2014 my original turbo seemed to have been missing that spacer as well. maybe there is a significant percentage of us who've encountered this same problem? After diving in to it, there is no spacer. That's the sleeve for the waste gate swing valve linkage assy.http://i.ebayimg.com/00/s/MTUwMFgxNTAw/z/T~8AAOxy3lFRBp~E/$%28KGrHqJ,%21lYFDOG6t1lTBRBp+EPl%29w~~60_35.JPGhttp://s.ecrater.com/stores/221197/50026fb7c8ad6_221197n.jpg If the roll pin fails to do it job, over time the waste gate sleeve will start to move to the right. As the turbine housing start to expand, do to hot exhaust gases & pressure. Mileage:331487 Retired/Sold Link to comment Share on other sites More sharing options...
onlylegacys Posted June 9, 2014 Share Posted June 9, 2014 ah I see. i feel relieved to know 100% what was wrong with my old turbo now. thank you for the hard work and good info!! Link to comment Share on other sites More sharing options...
Redgossamer Posted June 14, 2014 Share Posted June 14, 2014 Can I ask where I might find the larger roll pin? I've discovered the same problem and would rather try and fix it rather than replace it. Link to comment Share on other sites More sharing options...
HAMMER DOWN Posted June 15, 2014 Author Share Posted June 15, 2014 I got mine at TSC http://www.tractorsupply.com/?cm_mmc%3DSEM-_-Bing-_-Brand-_-TSC My local had a better selection in store. But any automotive or hardware store that sells bulk hardware should have them. Just search roll pins & I bet you will find a store near you. Mileage:331487 Retired/Sold Link to comment Share on other sites More sharing options...
SSpeed Posted May 20, 2016 Share Posted May 20, 2016 Sorry for bumping this old thread, but searching I felt it was more relevant than making my own thread. I had the exhaust apart last night and also notice my wastegate sleeve is shifted. http://legacygt.com/forums/showthread.php/rattlesnake-sound-under-boost-245193.html How did the redrilling to 3/16" hold up over time? Link to comment Share on other sites More sharing options...
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