4WDFrenzy Posted January 16, 2009 Share Posted January 16, 2009 I was wondering, has anyone on the forum ever disassembled a VF7 turbo? I'm not just talking about removing it from the manifold and out of the engine bay, but actually a complete teardown? My turbo doesn't necessarily need to be completely taken apart, but I might as well freshen things up a bit while I have it apart. What I need to know mainly is what all is required, aside from removing the bolts that hold the compressor and exhaust snails from their respective housings, to remove the compressor from the shaft? And NO, sending it off to a shop is not an option, and no GD, as much fun as an engine swap would be, it just isn't on the menu this time around...LOL. Anyway, I will only have roughly a week to complete this and various other tasks for a PCS to California. If anyone can help, any and all help would be very much appreciated. Thanks to all in advance. Patrick Link to comment Share on other sites More sharing options...
rguyver Posted January 16, 2009 Share Posted January 16, 2009 ya just remove all the bolts and it will come apart but the inner bolts on the exhost side have a tendency to just brake off but you may get lucky , also dont take the nut off the impeller shaft or rotate the two turbines out of aliment they are ballenced as an assembly . if you do it will not last long unless you send it to a shop for a reballence . Link to comment Share on other sites More sharing options...
4WDFrenzy Posted January 16, 2009 Author Share Posted January 16, 2009 also dont take the nut off the impeller shaft or rotate the two turbines out of alignment they are balanced as an assembly . if you do it will not last long unless you send it to a shop for a reballence . Wow!....Yikes! Good to know. I always wondered about that. Well that kinda sucks considering that the impeller needs to be removed. Well, I guess I had better start pricing out shop charges and shipping rates. Thanks for the info. It was really helpful. Patrick Link to comment Share on other sites More sharing options...
rguyver Posted January 16, 2009 Share Posted January 16, 2009 why would it need to be removed ? unless you are replacing the berrings and seals ? , the two ends come off with out needing to remove it , also you could mark the impellers so they can be put back in the same spot . but its still not recomended. Link to comment Share on other sites More sharing options...
subiemech85 Posted January 16, 2009 Share Posted January 16, 2009 don't bother, as from the service manual: “a. The turbocharger proper cannot be disassembled or adjusted.” PCS Link to comment Share on other sites More sharing options...
naru Posted January 16, 2009 Share Posted January 16, 2009 (edited) don't bother, as from the service manual: “a. The turbocharger proper cannot be disassembled or adjusted.” PCS Don`t believe everything you read! Undo the LH thread nut to liberate the compressor. Compressor wheels and shafts have factory alignment marks on all I`ve dissassembled(look carefully).As long as you line them up again,the assembly will be just as balanced as before. Thrust bearing seems to be the major wear item. Edited January 16, 2009 by naru Link to comment Share on other sites More sharing options...
4WDFrenzy Posted January 18, 2009 Author Share Posted January 18, 2009 Hey everyone, thanks for the replies. The major reason that I need to remove the impeller is that I have a ported compressor snail and a larger impeller waiting to go in. But it's cool. I'll just wind up sending it off and having a turbocharger repair shop do all of the work I guess. In that way it can all be balanced so that I know that it will last and I don't have to feel guilty about killing a $170 turbo upgrade if something not so good happens. I was just kinda hoping that it was something that I could do myself so that I could save a few bucks and get a little wrench time in learning to disassemble a turbo. Oh well. Patrick Link to comment Share on other sites More sharing options...
4WDFrenzy Posted January 22, 2009 Author Share Posted January 22, 2009 Don`t believe everything you read! Undo the LH thread nut to liberate the compressor. Compressor wheels and shafts have factory alignment marks on all I`ve dissassembled(look carefully).As long as you line them up again,the assembly will be just as balanced as before. Thrust bearing seems to be the major wear item. Wait! My big question is what do you use to hold the exhaust impeller still while removing the nut? Patrick Link to comment Share on other sites More sharing options...
rguyver Posted January 22, 2009 Share Posted January 22, 2009 you use a 12 point 10mm socket or if the housing is off you can use a 10mm 12 point box end wrench . Link to comment Share on other sites More sharing options...
discopotato03 Posted January 24, 2009 Share Posted January 24, 2009 Should also use a socket and "T" bar to remove the compressor jamb nut , by rights shold use a new nut when reassembling . Cheers A . Also , for some reason this site logs me off in the LSD understeer thread only so I'll post here . My Australian delivered L RX Turbo Sedan had 19mm front and 16mm rear anti roll bars - WSM quotes 19 and 16mm and it measured true . A suspension genius I know ran a business that makes these bars and made up a 24mm front and 22mm rear bars for my RX . They make a huge difference to handling though I reckon the rear should also be 24 . They kept my std rear bar as a pattern so can make what ever size I want . One thing to watch is the rear bar mount hoops , the std ones are rubbish and open up with higher rate bars so you need to make up new ones from thicker flat bar or modify something similar to suit . For enquiries contact Superior Suspension Pty Ltd 4 Lincoln St Minto NSW 2566 Australia . Cheers A . Link to comment Share on other sites More sharing options...
4WDFrenzy Posted January 24, 2009 Author Share Posted January 24, 2009 Should also use a socket and "T" bar to remove the compressor jamb nut , by rights shold use a new nut when reassembling . Cheers A . Also , for some reason this site logs me off in the LSD understeer thread only so I'll post here . My Australian delivered L RX Turbo Sedan had 19mm front and 16mm rear anti roll bars - WSM quotes 19 and 16mm and it measured true . A suspension genius I know ran a business that makes these bars and made up a 24mm front and 22mm rear bars for my RX . They make a huge difference to handling though I reckon the rear should also be 24 . They kept my std rear bar as a pattern so can make what ever size I want . One thing to watch is the rear bar mount hoops , the std ones are rubbish and open up with higher rate bars so you need to make up new ones from thicker flat bar or modify something similar to suit . For enquiries contact Superior Suspension Pty Ltd 4 Lincoln St Minto NSW 2566 Australia . Cheers A . Thanks for the info. I don't mind you posting in my thread as I know what you mean about getting logged out. It did it to me 3 times earlier. But anyway, Thanks for the anti roll bar info. Patrick Link to comment Share on other sites More sharing options...
4WDFrenzy Posted January 24, 2009 Author Share Posted January 24, 2009 you use a 12 point 10mm socket or if the housing is off you can use a 10mm 12 point box end wrench . Thanks for the quality info. That was exactly the info that I was looking for. Patrick Link to comment Share on other sites More sharing options...
presslab Posted January 24, 2009 Share Posted January 24, 2009 Also , for some reason this site logs me off in the LSD understeer thread only so I'll post here . My Australian delivered L RX Turbo Sedan had 19mm front and 16mm rear anti roll bars - WSM quotes 19 and 16mm and it measured true . A suspension genius I know ran a business that makes these bars and made up a 24mm front and 22mm rear bars for my RX . They make a huge difference to handling though I reckon the rear should also be 24 . They kept my std rear bar as a pattern so can make what ever size I want . One thing to watch is the rear bar mount hoops , the std ones are rubbish and open up with higher rate bars so you need to make up new ones from thicker flat bar or modify something similar to suit . For enquiries contact Superior Suspension Pty Ltd 4 Lincoln St Minto NSW 2566 Australia . Cheers A . Oh I just found this, thanks for the info!! When I installed the XT6 rear bar the seller included the mounting hoops. The hoops from the XT6 bar were about twice as thick as the original ones on my wagon, so I used them. It seems Subaru knew of this problem as well. And Patrick you should consider a TD04. Link to comment Share on other sites More sharing options...
4WDFrenzy Posted January 28, 2009 Author Share Posted January 28, 2009 And Patrick you should consider a TD04. I'd love one. Only problem being that my wife(that I love so much) refuses to let me make such a purchase. Reason being, I quit my $9.11/hr job to take care of my son when he was born because childcare here in Okinawa is insane! So fast forward 2-1/2 years and I'm still at home, with no job, and now I have a son and a daughter. So alot of what could have been "Fun Money" goes toward my childrens' wants and needs. But I'm still trying to be optomistic and hopeful that I may come across one at the right price, at the right time. So for now, I just have to continue to play with the VF7. Patrick Link to comment Share on other sites More sharing options...
discopotato03 Posted March 18, 2009 Share Posted March 18, 2009 Patric can you please look at the exhaust housing of your VF7 turbo and note its size ie R12 or R15 . I think it's a little known secret that some of the 7's , 88 XT4 Turbo , had a slightly larger turbine housing which would help reduce exhaust restriction on an EA82T . Cheers A . If anyone has the appropriate R15 housing to sell let me know . Cheers A . Link to comment Share on other sites More sharing options...
4WDFrenzy Posted March 18, 2009 Author Share Posted March 18, 2009 Patric can you please look at the exhaust housing of your VF7 turbo and note its size ie R12 or R15 . I think it's a little known secret that some of the 7's , 88 XT4 Turbo , had a slightly larger turbine housing which would help reduce exhaust restriction on an EA82T . Cheers A . As much as I'd love to help, I can't at this present moment. I am still in Okinawa, Japan and my car is thousands of miles away in Texas. Hopefully I can take a peek and let you know in about a week or two. Cheers. -Patrick Link to comment Share on other sites More sharing options...
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