MilwaukeeMike Posted August 10, 2011 Share Posted August 10, 2011 I have a 2005 lgt with roughly 90k on it. I went stage 2 and ran a standard Cobb map for about a week. My brother was driving it on the freeway one day doing 65 (not pushing it) and heard some bad noise. I wasn't there, just woke up to the phone call:mad:. It was clear at that point the turbo was trashed- took it out yup. That was replaced and a new turbo was installed. We started tried starting it up and it sounded terrible. Moving right along- I have bad scratches in the journals in the heads and on the cams. The block is seized (in the process of splitting). As stated the turbo was all play and not shaft. The oil pan is off and I found what I think is a wrist pin I'm really looking for some help with a diagnosis as I would like to avoid this in the future. All signs point to lack of oil pressure- unless I maybe missed something? Going back into my car will be a completely rebuilt ej257 short block, heads to be acquired yet?(just found out today machining will cost me about the same as just picking up new ones), and the newer vf46? Turbo. I'll post my findings when I get the block split. This has just been a long emotional and financial blow. I'm just trying to get up and running proper again with some piece of mind. Any help as to what could have gone wrong or head ideas or any useful insight would be massively appreciated. NOTES -oil light never came on -after taking apart the oil pump nothing looks weird there -oil pick up looks fine -the proper amount of oil drained out of the motor right before we pulled it :spin: Link to comment Share on other sites More sharing options...
goneskiian Posted August 10, 2011 Share Posted August 10, 2011 Damn! Sucks to hear. A whole thread full of these stories.... http://legacygt.com/forums/showthread.php/anyone-oem-blown-turbo-please-post-83047.html How often did you change your oil? Not that this is a determining factor though as some have had this issue with regular and short OCI while others are able to go with longer OCI's. Did you ever have the screen in the banjo bolt checked or cleaned? Here's an article about that last question... http://store.forcedperformance.net/merchant2/merchant.mvc?Screen=Info_SubaruOil I'm sure others will chime in with what you should do on the new engine. The popular solution is to remove the screen from the banjo bolt and get an inline filter on the turbo oil line that is easily accessible. Check it often and change your oil regularly. Best of luck with the new engine and turbo! Cheers! Link to comment Share on other sites More sharing options...
bmx045 Posted August 10, 2011 Share Posted August 10, 2011 From what you describe is either the turbo banjo oil feed was clogged, causing turbo bearing failure, or debris in the oil (I.E. OCI probably too long). The oil press light comes on at ~ 2psi. extremely low, still, failure can occur without the light coming on. Recommended oil change interval for these cars is 3000-3500 miles. Link to comment Share on other sites More sharing options...
BAC5.2 Posted August 10, 2011 Share Posted August 10, 2011 Recommended oil change interval for these cars is 3000-3500 miles. You mean I should have done more than 4 oil changes in the past 46k miles? Damn. [URL="http://legacygt.com/forums/showthread.php/proper-flip-key-interesti-159894.html"]Flip Key Development Thread[/URL] "Genius may have its limitations, but stupidity is not thus handicapped." - E. Hubbard Link to comment Share on other sites More sharing options...
MilwaukeeMike Posted August 10, 2011 Author Share Posted August 10, 2011 I'm obsessive about oil changes on this car. I usually change the oil when it gets close to 3k. I've seen lots of people talking about the banjo bolt- I'll check that out Thanks Guys Link to comment Share on other sites More sharing options...
bmx045 Posted August 10, 2011 Share Posted August 10, 2011 take the banjo bolt out and remove the filter, inspect it for debris. sounds like oil starvation to the turbo and then annhilation on the short block bearings. Link to comment Share on other sites More sharing options...
rob-2 Posted August 10, 2011 Share Posted August 10, 2011 Do we have pictures of what a good and bad banjo bolt looks like? Link to comment Share on other sites More sharing options...
bmx045 Posted August 10, 2011 Share Posted August 10, 2011 the bolt doesn't change, the filter in it get's clogged with debris. use your imagination. Link to comment Share on other sites More sharing options...
Balrock Posted August 10, 2011 Share Posted August 10, 2011 If you are getting a different turbo, you should really look at the BNR 16g, or a VF52 over a 46 for sure. Link to comment Share on other sites More sharing options...
rob-2 Posted August 10, 2011 Share Posted August 10, 2011 the bolt doesn't change, the filter in it get's clogged with debris. use your imagination. Maybe both the OP and I would like to see what a good/bad bolt look like so one can quickly determine the issue. Link to comment Share on other sites More sharing options...
MilwaukeeMike Posted August 10, 2011 Author Share Posted August 10, 2011 The 46 is already purchased. Link to comment Share on other sites More sharing options...
rob-2 Posted August 10, 2011 Share Posted August 10, 2011 OP is your crank scarred? Any bearing damage? Would it be cheaper to buy a new motor? Your head should be fine. They aren't typically damaged in oil starvation situations. New but used block plus selling your old head might be easier. Link to comment Share on other sites More sharing options...
bmx045 Posted August 10, 2011 Share Posted August 10, 2011 OP is your crank scarred? Any bearing damage? Would it be cheaper to buy a new motor? Your head should be fine. They aren't typically damaged in oil starvation situations. New but used block plus selling your old head might be easier. Oh really? I have have heads to prove you wrong. Very wrong. Link to comment Share on other sites More sharing options...
SSpeed Posted August 10, 2011 Share Posted August 10, 2011 rob-2, don't worry about your banjo filter.... when your turbo blows and takes out the motor due to your oil change experiment it will be the nail in the coffin in convincing your wife that Subaru sucks and Honda is the way to go... Thread #40 has one with debris in it here... http://www.subaruforester.org/vbulletin/f87/2005-forester-xt-blown-turbo-77989/index3.html TSB# 02-106-08R and 02-103-07 Link to comment Share on other sites More sharing options...
bmx045 Posted August 10, 2011 Share Posted August 10, 2011 Honda's racing heritage trumps the human species as we know it Link to comment Share on other sites More sharing options...
IDRVSLO Posted August 11, 2011 Share Posted August 11, 2011 I too had a set of heads from a oil starved engine.......the journals were pretty bad........now I have a set from an engine that cracked a ringland.......no signs of wear in the journals at all. Case and point. I agree with BMX for the first time ever! Woohoo! [ Link to comment Share on other sites More sharing options...
MilwaukeeMike Posted August 11, 2011 Author Share Posted August 11, 2011 OP is your crank scarred? Any bearing damage? Would it be cheaper to buy a new motor? Your head should be fine. They aren't typically damaged in oil starvation situations. New but used block plus selling your old head might be easier. The block is not split yet. I already have a rebuilt sti short block. The heads aren't fine. I have those off and have taken them to a local performance shop that rebuilt heads from my Rs. Considering the cams ride on a flow of oil in the journals I'd think oil starvation would be the perfect way to damage both my journals and cams. Link to comment Share on other sites More sharing options...
MilwaukeeMike Posted August 12, 2011 Author Share Posted August 12, 2011 Will 05 wrx heads bolt up proper? the heads also have jdm sti v6 cams? Link to comment Share on other sites More sharing options...
IDRVSLO Posted August 12, 2011 Share Posted August 12, 2011 It has 2.0L heads if I remember correctly......sure it will work. Guys do 2.5 blocks with 2.0L heads all the time.....not sure if it has AVCS though. Tuning will definitely be required. What are they asking for the heads? EDIT: Yep 2.0 [ Link to comment Share on other sites More sharing options...
bmx045 Posted August 12, 2011 Share Posted August 12, 2011 Will 05 wrx heads bolt up proper? the heads also have jdm sti v6 cams? Heads need to be machined to work as a hybrid setup (ie 2.0 heads 2.5 block). Link to comment Share on other sites More sharing options...
MilwaukeeMike Posted August 12, 2011 Author Share Posted August 12, 2011 http://cgi.ebay.com/ebaymotors/SUBARU-IMPREZA-WRX-CYLINDER-HEADS-OEM-HEAD-_W0QQcmdZViewItemQQ_trkparmsZalgoQ3dLVIQ26ituQ3dUCIQ26otnQ3d1Q26poQ3dLVIQ26psQ3d63Q26clkidQ3d2000049496388927115QQ_trksidZp5197Q2em7QQitemZ180707975156#ht_500wt_1182 There's the deal. I didn't realize it was a 2.0. I'll keep 2.5 shopping. Link to comment Share on other sites More sharing options...
IDRVSLO Posted August 12, 2011 Share Posted August 12, 2011 So what was wrong with the 700 for inspected heads? Hehe, good luck with the search! [ Link to comment Share on other sites More sharing options...
MilwaukeeMike Posted August 12, 2011 Author Share Posted August 12, 2011 So what was wrong with the 700 for inspected heads? Hehe, good luck with the search! It just made me feel warm inside that they were resurfaced and calibrated. I may still buy yours. I'm just exploring options. Link to comment Share on other sites More sharing options...
rob-2 Posted August 12, 2011 Share Posted August 12, 2011 The block is not split yet. I already have a rebuilt sti short block. The heads aren't fine. I have those off and have taken them to a local performance shop that rebuilt heads from my Rs. Considering the cams ride on a flow of oil in the journals I'd think oil starvation would be the perfect way to damage both my journals and cams. Normally a piston or a crank bearing goes before the head. Once you have it all opened up you'll know the damage. Best of luck. Link to comment Share on other sites More sharing options...
MilwaukeeMike Posted August 12, 2011 Author Share Posted August 12, 2011 The journals are scratched up. It doesn't really matter to me what is destroyed in my block since I have a replacement. My question is Why? I don't want to deal with this again if possible. Is there some bad ass oil pump or something I can pick up? I got all new oil lines to the turbo already. Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.