ShadowImg Posted May 6, 2011 Share Posted May 6, 2011 This whole turbo thing seems a little sketchy to me. I intend to start using highly compressed oil and gasoline instead of compressing the air. Should work the same, right? Link to comment Share on other sites More sharing options...
BAC5.2 Posted May 6, 2011 Author Share Posted May 6, 2011 If it's a price difference in several hundreds of dollars... get the VF-52. If it's close, step up to the MHI guts. Bryan's build quality and service are great. It's a price difference of several hundred dollars. I think I can source a VF52 for free. [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...
BAC5.2 Posted May 6, 2011 Author Share Posted May 6, 2011 This whole turbo thing seems a little sketchy to me. I think you are right. I did add some geletain to my washer fluid reservoir. It helps keep the sloshing at a minmum so my daily driver doesn't get upset when going to the grocery store. I think I'll do the same for my fuel tank, oil, and brake, clutch, power steering, transmission, and rear diff fluids. My car will be so stable, you guys will be like "woah, that car is so stable" when I am being a professional racer. [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...
underpowerd Posted May 6, 2011 Share Posted May 6, 2011 Thanks underpowrd for the IHI reminder. I probably pay them less attention than they deserve, mostly because of lack of compressor maps or spare parts. np, there's a few ancient generic charts for the family below. i also have real deals of some of the others on hand (vf22, 23, pe1820) if anyone needs 'em. Link to comment Share on other sites More sharing options...
Deaks2 Posted May 6, 2011 Share Posted May 6, 2011 Fahr - I think that sounds like a good plan. I'll see if I can source the OE STi pump. I'm only going with pump gas, so it should be adequate and it means I don't have to worry about sealing or modding the bucket. Did you get the whole assembly, or just the pump alone? My car, quite literally, spends the majority of its life below 4500rpm and plots from the 52 seem to support the left end of the tach. I don't really need to max it out on the top end, as long as it makes more power than I do now I'll be happy. I am running a VF-37 with DW 740 cc injectors on pump gas and got an 08+ STI 175 lph fuel pump of NASIOC for $50. Plug and play and cheap Infamous tuned the car, the pump is fine and I have plenty of fuel up to red line. If I go to E85 then I'd need a Walbro 255 lph unit or bigger. Link to comment Share on other sites More sharing options...
iNVAR Posted May 7, 2011 Share Posted May 7, 2011 my 40 popped at 63k miles I could probably find this from searching, but I'm gonna be lazy just this once and ask. What usually happens to the VF40 for them to die? Start getting shaft play? Or is it something really catastrophic? Link to comment Share on other sites More sharing options...
goneskiian Posted May 7, 2011 Share Posted May 7, 2011 You guys are scaring me... Want to get really scared? http://legacygt.com/forums/showthread.php/anyone-oem-blown-turbo-please-post-83047.html Link to comment Share on other sites More sharing options...
goneskiian Posted May 8, 2011 Share Posted May 8, 2011 I just got the STi pump. The buckets are the same so it will drop straight in. Where you able to confirm the STi pump for sure flows more? I seem to recall from this thread that you weren't 100% convinced whether this was the case. Thanks. Link to comment Share on other sites More sharing options...
fahr_side Posted May 8, 2011 Share Posted May 8, 2011 Where you able to confirm the STi pump for sure flows more? I seem to recall from this thread that you weren't 100% convinced whether this was the case. Oh, I know it flows more than the LGT pump. I just wasn't 100% sure it was bigger than the WRX pump because of the markings on the body. My friend was mistaken, and they are different. Obligatory '[URL="http://legacygt.com/forums/showthread.php/2008-gh8-238668.html?t=238668"]build thread[/URL]' Increased capacity to 2.7 liters, still turbo, but no longer need spark plugs. Link to comment Share on other sites More sharing options...
goneskiian Posted May 8, 2011 Share Posted May 8, 2011 Oh, I know it flows more than the LGT pump. I just wasn't 100% sure it was bigger than the WRX pump because of the markings on the body. My friend was mistaken, and they are different. Ahh, OK. Thanks. Link to comment Share on other sites More sharing options...
BAC5.2 Posted May 8, 2011 Author Share Posted May 8, 2011 Good deal. So maybe an STi pump, and a VF52 would be a good plug-and-play upgrade. Shouldn't run out of pump with an STi pump, right? [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...
ShadowImg Posted May 9, 2011 Share Posted May 9, 2011 Believe STIs typically go with an aftermarket fuel pump just when going to stage 2. I know Ron @ AXIS & Jorge @ P&L both used to recommend them. Link to comment Share on other sites More sharing options...
rao Posted May 9, 2011 Share Posted May 9, 2011 Sounds very risky and dangerous to me Rob IF YOU CARE ABOUT YOUR CAR YOU SHOULD NEVER DRIVE IT Link to comment Share on other sites More sharing options...
ShadowImg Posted May 9, 2011 Share Posted May 9, 2011 Sounds very risky and dangerous to me I suspect we should all actually just remove our fuel pumps entirely. That would eliminate any possibility for damage related to fueling. Link to comment Share on other sites More sharing options...
rao Posted May 9, 2011 Share Posted May 9, 2011 That is probably the best approach. Rob IF YOU CARE ABOUT YOUR CAR YOU SHOULD NEVER DRIVE IT Link to comment Share on other sites More sharing options...
BAC5.2 Posted May 9, 2011 Author Share Posted May 9, 2011 You boys are absolutely right, you definitely won't have a problem with the fuel pump, if you don't have one. Why hasn't this been explored before? Spec-B's don't have fuel pumps, do they? [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...
fahr_side Posted May 9, 2011 Share Posted May 9, 2011 Spec-B's don't have fuel pumps, do they? Spec-B runs only on purified panther piss, which needs no pump. Actually the injectors are there so it doesn't all jump into the engine at once. Obligatory '[URL="http://legacygt.com/forums/showthread.php/2008-gh8-238668.html?t=238668"]build thread[/URL]' Increased capacity to 2.7 liters, still turbo, but no longer need spark plugs. Link to comment Share on other sites More sharing options...
BAC5.2 Posted May 9, 2011 Author Share Posted May 9, 2011 Hmm, that explains so much... [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...
bmx045 Posted May 11, 2011 Share Posted May 11, 2011 I could probably find this from searching, but I'm gonna be lazy just this once and ask. What usually happens to the VF40 for them to die? Start getting shaft play? Or is it something really catastrophic? Oil starvation from clogged banjo bolt filter, or contaminated oil. Step 1: remove banjo filter, step 2: hope the turbo doesn't blow and rape your engine too. If I were you, step 1 should be a BNR vf40 asap. Link to comment Share on other sites More sharing options...
goob_os101 Posted August 3, 2017 Share Posted August 3, 2017 Bringing this thread back from the dead. I will be going with a VF52 in my 05 OBXT along with a DW65c fuel pump. I can score some DW 740cc side feeds for under $300...would you suggest I go with them or stay stock injectors? Link to comment Share on other sites More sharing options...
grovlet Posted August 3, 2017 Share Posted August 3, 2017 Well - My car is running stock injectors with the 52.... But many will argue that having a slightly bigger injector provides some room to get away from/avoid hitting 100% duty cycle. Basically not needed or required but better safe than sorry (especially for only $300). Link to comment Share on other sites More sharing options...
Infosecdad Posted August 3, 2017 Share Posted August 3, 2017 Same, I'm running freshly cleaned/tested stock injectors with my VF52 and AEM pump. I've hit 90-95% DC on the injectors when WoT a couple times, but all good right now. Link to comment Share on other sites More sharing options...
Max Capacity Posted August 3, 2017 Share Posted August 3, 2017 Just saying, 6 years later and over 100,000 miles on stock fueling on the vf52 and all is still fine. 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...
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