Visionhu Posted November 2, 2007 Share Posted November 2, 2007 Finally I did manage to get an almost new (16k miles) STi 6spd, so decided to make the swap, as my stock 5spd is getting worse at around 330 hp. The parts going to be changed: - stock front diff - stock rear diff - stock 5spd - stock shaft - stock front and rear axles At first I was thinking of just replacing the rear diff with an STi R180, leaving the front open, as is - I do not want DCCD. We also gonna replace the GT push type clutch with an STi pull type. Actually I would like to built an STi drivetrain - or better. The question is what type of diffs do you guys recommend? I was thinking of getting torsen diffs to the front and rear as well. I am just curious how the machine would handle... Are there any pros/cons? Or just have the R180 at the rear and go with something else at the front? I heard that the 07 STis are using torsen at the front and the rear as well. Is this correct? Any ideas? PS: got a decent GT 5spd manual for sale with 22k miles Link to comment Share on other sites More sharing options...
Guest Posted November 2, 2007 Share Posted November 2, 2007 Well, if you got sti 6spd you got front diff (should be lsd) as well as center diff already All you need is proper shaft and R160 3.90 ratio rear diff. If you want STI's R180 diff, you need to change rear axles, hubs and brakes. You do not need to change front axles. Link to comment Share on other sites More sharing options...
Visionhu Posted November 3, 2007 Author Share Posted November 3, 2007 Well, if you got sti 6spd you got front diff (should be lsd) as well as center diff already All you need is proper shaft and R160 3.90 ratio rear diff. If you want STI's R180 diff, you need to change rear axles, hubs and brakes. You do not need to change front axles. Got no front or rear diff in the set...no DCCD as well Parts are from an 05 STi Link to comment Share on other sites More sharing options...
Guest Posted November 3, 2007 Share Posted November 3, 2007 No DCCD? I didn't know there were STI boxes without. Maybe in EDM/JDM. Link to comment Share on other sites More sharing options...
Visionhu Posted November 3, 2007 Author Share Posted November 3, 2007 Definately EDM. I could not source a JDM one, and I need the long 5th and 6th gear found in the European version, as sometimes I take long journeys on highways. So, any ideas/tips which ones to get? Link to comment Share on other sites More sharing options...
Guest Posted November 3, 2007 Share Posted November 3, 2007 Well, research if there is some reduction in the box itself. E.g. 2007+ USDM LGT SpecB 6spd has 1.1 reduction I believe. Link to comment Share on other sites More sharing options...
Visionhu Posted November 3, 2007 Author Share Posted November 3, 2007 I am pretty sure it is an 1.1:1 in the EDM STI too. 3.900 at the rear (3.545 x transfer 1.1)? Link to comment Share on other sites More sharing options...
HAMMER DOWN Posted November 3, 2007 Share Posted November 3, 2007 Good luck. Mileage:331487 Retired/Sold Link to comment Share on other sites More sharing options...
Visionhu Posted November 3, 2007 Author Share Posted November 3, 2007 Good luck. Thx, I'll need that Link to comment Share on other sites More sharing options...
Xenonk Posted November 4, 2007 Share Posted November 4, 2007 did you talk to Andrewtech? they can get you something better than just another OEM STI tranny. They have PPG gearsets and more.. you should give Andrew a call. 240-683-1000 Keefe Link to comment Share on other sites More sharing options...
Visionhu Posted November 4, 2007 Author Share Posted November 4, 2007 did you talk to Andrewtech? they can get you something better than just another OEM STI tranny. They have PPG gearsets and more.. you should give Andrew a call. 240-683-1000 Hey Xenonk, thx for the idea, I'll give it a shot - however I think shipping to Europe would be a fortune. Nevermind, I'll try! Thx! Link to comment Share on other sites More sharing options...
team23jordan Posted November 4, 2007 Share Posted November 4, 2007 If you dont want the DCCD, just get the 07+ spec B tranny Perrin BIG maf intake Perrin Turbo Inlet HKS SSQV BOV Megan Racing header with UP (ceramic coated) HKS DP (WRX) DMH E-cutout Custom 3" catback UTEC Link to comment Share on other sites More sharing options...
Visionhu Posted November 5, 2007 Author Share Posted November 5, 2007 If you dont want the DCCD, just get the 07+ spec B tranny It looks like I have the chance getting an STi Spec C...we'll see Link to comment Share on other sites More sharing options...
Visionhu Posted November 15, 2007 Author Share Posted November 15, 2007 At least I had figured out, that I can not fit a DCCD controlled EDM tranny into my USDM LGT, because the ABS sensors are different. Sooo, I have to source some EDM sensors for the EDM DCCD equipped tranny to work Link to comment Share on other sites More sharing options...
HAMMER DOWN Posted November 15, 2007 Share Posted November 15, 2007 At least I had figured out, that I can not fit a DCCD controlled EDM tranny into my USDM LGT, because the ABS sensors are different. Sooo, I have to source some EDM sensors for the EDM DCCD equipped tranny to work yes you can. Go after market for you DCCD control. Link, http://dccdpro.com/?page_id=5 Only 5 wires to hook up; Support ” Spiider’s” Auto DCCD controller info. Thank you for your purchase. Technical Details: <LI class=MsoNormal>Microchip’s PIC 16f877a microprocessor running at 4mhz <LI class=MsoNormal>2 axis high resolution g-sensor <LI class=MsoNormal>custom firmware with driver adaptive capability <LI class=MsoNormal>several internal modes based on driver throttle behavior and g- sensor behavior that switch on the fly automatically DCCD calculations are using advanced formula’s instead of unintelligent “static mapping” or “lookup tables” Installation: Installation is recommended to be performed by a licensed auto mechanic. “Red” = 12v positive (switched power) “Green“ = 0v negative (ground) “Black” = DCCD “B128 pin 1” (See attached Subaru DCCD Schematic) “White“ = DCCD “B128 pin 4” (See attached Subaru DCCD Schematic) “Blue“ = TPS: Non-DBW “B135 pin B7” (See attached Subaru ECM Schematic) DBW “B136 pin B18” (See attached Subaru ECM Schematic) These 5 wires are all you need to hook up for automatic operation. You may add an accessory switch to the 0v wire if desired to be able to turn off the system for “open” operation of your differential. It is also recommended to have at least a 10 amp fused circuit powering the DCCD. Mike Mileage:331487 Retired/Sold Link to comment Share on other sites More sharing options...
Visionhu Posted November 20, 2007 Author Share Posted November 20, 2007 Meantime I gave up searching on diffs for the tranny I wanted to buy - being just too complicated... Yesterday I bought a 2006 EDM STi tranny with its front, center and rear diff without driveshaft and axles. I have decided to go "Mike-way", with an aftermarket DCCD controller. Thx again Mike I do not want to go with aftermarket aluminium or CF driveshaft, soooo need to source a factory STi one. Anybody knows any online store that willing to ship to Europe? I had been looking at 1stsubaruparts.com, but they do not ship overseas Any help appreciated Link to comment Share on other sites More sharing options...
mikeyan Posted November 20, 2007 Share Posted November 20, 2007 will the stock STI driveshaft be too short? I think a SPec B or 5EAT driveshaft might work tho.... not entirely sure Mike SoCal Duck Hunters Club - Unit 52 Link to comment Share on other sites More sharing options...
Aczwild Posted November 20, 2007 Share Posted November 20, 2007 Shoulda bought a Spec B... :lol: Just joking. If you are looking for an easier swap, just source everything from an '07 Spec B, they come with the 6-Spd Trans, sans DCCD and with Torsen Rear Diff (can't remember the exact ratio). It will be a hell of a lot easier for you since everything is already made for the LGT. Just my .02c JDM'd All to hell Thanks Jimmy @ Hkc-Speed.com! RIP Coxx & Thanks Link to comment Share on other sites More sharing options...
Guest Posted November 20, 2007 Share Posted November 20, 2007 Meantime I gave up searching on diffs for the tranny I wanted to buy - being just too complicated... Yesterday I bought a 2006 EDM STi tranny with its front, center and rear diff without driveshaft and axles. I have decided to go "Mike-way", with an aftermarket DCCD controller. Thx again Mike I do not want to go with aftermarket aluminium or CF driveshaft, soooo need to source a factory STi one. Anybody knows any online store that willing to ship to Europe? I had been looking at 1stsubaruparts.com, but they do not ship overseas Any help appreciated I am not sure, but I think I read somewhere 06-07 USDM STI transmission has different ratio. I.e. final is still 3.9, but there is 1.1 reduction in the transmission itself. Not sure if it applies to 06+ EDM STI. But then you have rear diff so you should be ok, except... now you have the problem with rear shafts. STI rear shafts won't work with LGT hubs/brakes. Big $$$$$$. So that means unless you can get custom ones built, you need entire STI rear end (hubs/brakes). Which for USDM 05+ was 5x114.... which you don't want unless you want to swap front, too (not sure if possible). Hopefully 04 USDM STI work (5x100), but I don't know. The lego like mix and matching sometimes is not so easy Link to comment Share on other sites More sharing options...
Fraggle Posted November 20, 2007 Share Posted November 20, 2007 from an '07 Spec B, they come with the 6-Spd Trans, sans DCCD and Torsen Rear Diff The '07b does have the Torsen Rear Diff. It doesn't have DCCD. Link to comment Share on other sites More sharing options...
Aczwild Posted November 20, 2007 Share Posted November 20, 2007 The '07b does have the Torsen Rear Diff. It doesn't have DCCD.Yeah I know, Sans DCCD and I guess I should have phrased it with Torsen Diff.... Since I own one JDM'd All to hell Thanks Jimmy @ Hkc-Speed.com! RIP Coxx & Thanks Link to comment Share on other sites More sharing options...
Guest Posted November 20, 2007 Share Posted November 20, 2007 The '07b does have the Torsen Rear Diff. It doesn't have DCCD. It also doesn't have front LSD. Link to comment Share on other sites More sharing options...
Visionhu Posted November 21, 2007 Author Share Posted November 21, 2007 I am not sure, but I think I read somewhere 06-07 USDM STI transmission has different ratio. I.e. final is still 3.9, but there is 1.1 reduction in the transmission itself. Not sure if it applies to 06+ EDM STI. But then you have rear diff so you should be ok, except... now you have the problem with rear shafts. STI rear shafts won't work with LGT hubs/brakes. Big $$$$$$. So that means unless you can get custom ones built, you need entire STI rear end (hubs/brakes). Which for USDM 05+ was 5x114.... which you don't want unless you want to swap front, too (not sure if possible). Hopefully 04 USDM STI work (5x100), but I don't know. The lego like mix and matching sometimes is not so easy Yeah, I need the whole STi rear - that's for sure. The only question is - that's what Mike wrote - does the stock STi driveshaft fit the LGT or not? LGT is a bit different in size Actually the EDM 06 STi has "longer" gears in 5th and 6th. The 1.1 reduction at the tranny is the same - only the gearing differs. But that's what I need on highways - loooong 5th and 6th. The parts I surely need: - STi driveshaft - STi rear driveshaft axles - 04 STi hubs (I have 3 sets of 5x100 rims, so I do not want to go 5x114) Already made the STi brake swap The strange thing I noticed on http://www.1stsubaruparts.com is that the STi driveshaft costs only $500. I mean here in europe they sell it for around $2200...what the hell? BUT, they do no ship overseas. Bump. Any other online store willing to ship to Europe? Link to comment Share on other sites More sharing options...
HAMMER DOWN Posted November 21, 2007 Share Posted November 21, 2007 Yeah, I need the whole STi rear - that's for sure. The only question is - that's what Mike wrote - does the stock STi driveshaft fit the LGT or not? LGT is a bit different in size The STi drive shaft is more then 5" to short over all. If you have or can get a STi drive shaft. And the U-joint are good. Then take it to a drive shaft co. And have the remake the shaft with longer tubes. Here in the US. A 07 Sec.B drive shaft is over $650.00. Here's a idea, Have someone you trust, buy it here & ship it to you there. Has to be cheeper then $2200.00. The small shaft is the OEM, non-rebuildable. The other is my new shaft. It was a little cheeper then OEM, but it 3x as stong & can be 100% rebuildable for pennys on the dollar. See center pic. for contact info. http://i99.photobucket.com/albums/l293/HAMMERDOWNGT/Subaru/0915070017.jpg http://i99.photobucket.com/albums/l293/HAMMERDOWNGT/Subaru/0915070033a.jpg http://i99.photobucket.com/albums/l293/HAMMERDOWNGT/Subaru/0915070022.jpg If you get your R160 rear end regeared to match the STi 6MT. With the STi rear pinion flang. You can use your own half shafts. Mike Mileage:331487 Retired/Sold Link to comment Share on other sites More sharing options...
Visionhu Posted November 30, 2007 Author Share Posted November 30, 2007 Just and update: STi rear axles arrived, along with the 2004 STi hubs. Still searching for somebody to ship the SpecB propshaft to Europe. No luck... The next problem is, that we do not see any chance of getting the STi hubs on the GT. Have to figure out something...anybody any idea? Link to comment Share on other sites More sharing options...
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