McCarthy69 Posted September 22, 2008 Share Posted September 22, 2008 http://legacygt.com/forums/skynetim/buttons/edit.gif http://legacygt.com/forums/skynetim/buttons/report.gif http://legacygt.com/forums/skynetim/misc/sendpm.gif http://legacygt.com/forums/skynetim/misc/find.gif http://legacygt.com/forums/skynetim/buttons/quote.gif http://legacygt.com/forums/skynetim/buttons/qreply.gif I have a 99 legacy 2.5 . I want to go turbo but i need to do some engine work first(my rings are shot). I found a few block upgrades that are a direct bolt in but are a lot of money. Heres the link: http://www.subarumotors.net/ I dont want to spend that much just to fix my engine. I can however Get forged pistons and new rings and a couple other new internals for the engine thats in my car now for alot less than what the block upgrades cost. Im doing the work myself so labor costs are not an issue. What do you guys think? Do you think the stock engine will handle a good amount of boost? I dont want to spend too much money but i dont want my engine to blow up either. Link to comment Share on other sites More sharing options...
rao Posted September 22, 2008 Share Posted September 22, 2008 Buy a complete WRX motor. Rob IF YOU CARE ABOUT YOUR CAR YOU SHOULD NEVER DRIVE IT Link to comment Share on other sites More sharing options...
McCarthy69 Posted September 22, 2008 Author Share Posted September 22, 2008 I was doing some resaerch and it seems like there is an awful lot of wiring invovled in mst of the swaps done. Is the wrx motor 2.5L? If it is will I be able to use the same wirinf harness and ecu I have now? Link to comment Share on other sites More sharing options...
KAG Posted September 23, 2008 Share Posted September 23, 2008 I was doing some resaerch and it seems like there is an awful lot of wiring invovled in mst of the swaps done. Is the wrx motor 2.5L? If it is will I be able to use the same wirinf harness and ecu I have now? 02-05 wrx...no, it's a 2.0L 06-07 wrx...yes, it's a 2.5L Any engine other than the engine you have now, you will not be able to use the wiring harness and ECU from your stock NA engine. Especially when you're adding a turbo. Link to comment Share on other sites More sharing options...
McCarthy69 Posted September 23, 2008 Author Share Posted September 23, 2008 More then likely im just gonna rebuild my engine so i dont have to deal with changing the wiring. Electrical work is a pain i deal with it at work all the time. So do you know how much hp/boost i can run on my stock 2.5? and if i rebuild it with forged internals (prolly just pistons and rods idk if im replacing the crank yet) how much i would be able to run then? Link to comment Share on other sites More sharing options...
McCarthy69 Posted September 23, 2008 Author Share Posted September 23, 2008 ok i found that my stock engine will prolly only handle about 5-6 psi. If i go with the stage 1 shortblock shown here www.subarumotors.net will I have to re-wire everything? Link to comment Share on other sites More sharing options...
McCarthy69 Posted September 25, 2008 Author Share Posted September 25, 2008 come on people respond i need answrs here Link to comment Share on other sites More sharing options...
KnifeyMcShanker Posted September 26, 2008 Share Posted September 26, 2008 It's pretty simple. If it's not your stock motor, you will need to re-wire. There will also be wiring work needed if you're just adding a turbo to your existing motor, but I'm pretty sure you can use the same loom. Link to comment Share on other sites More sharing options...
McCarthy69 Posted September 26, 2008 Author Share Posted September 26, 2008 i dont need to know about the wiring. I want to know if i put forged pistons and forged rods and a forged crankshaft in my motor now will it be good enough to run a turbo without worrying about blowing the motor up. Im running a piggeyback system with the turbo so wiring is out of the question right now. Anyways the shortblock im gonna get is i go that route is a direct swap to my engine( same liter , comp ratio , etc) so if its all the same i dont have to switch ecus. Link to comment Share on other sites More sharing options...
icrackedcorn Posted October 1, 2008 Share Posted October 1, 2008 http://legacygt.com/forums/showthread.php?t=94987 when that's done, im putting 2.5 heads on and calling it a day obedience to church and state is subjugation to the unjust authority of men Link to comment Share on other sites More sharing options...
McCarthy69 Posted October 1, 2008 Author Share Posted October 1, 2008 Good info ^^^ Link to comment Share on other sites More sharing options...
PhilT Posted October 2, 2008 Share Posted October 2, 2008 If you are interested in costs at all, you'll go with the swap Double Award Winning Legacy GT Wagon Link to comment Share on other sites More sharing options...
McCarthy69 Posted October 2, 2008 Author Share Posted October 2, 2008 how would the sawp be cheaper? It would also be especially time consuming with thw wiring because if one wire is connected wrong or the resistence changes the car wont run. Link to comment Share on other sites More sharing options...
Subaruna Posted November 6, 2008 Share Posted November 6, 2008 I've been thinking about very similar questions. I just had my stock '97 ej25 seize in my '97 Legacy GT. I know it's in the block (piston, bearing(s), etc?) because I can't turn the crank with a wrench in either direction with the timing belt removed. I'm not sure what happened, but I guess I'll find out when parts start coming off. I just had the heads done last year, so I think they're still in good shape. So I just bought a new/used short block site-unseen for what I hope is a pretty good deal. If the cylinders appear to be in good shape, and it turns smoothly by hand, I may put it in as is. But I'm still thinking, regardless of what shape it appears to be in, of tearing it apart, really checking things out, and replacing whatever makes sense while I've got it out of the car. I'm thinking of putting in forged pistons because of the piston land issues I've heard about with the stock ones. I'm not planning any engine mods, I just want to give the best chances of making it last (within reason $$$) for many more years (it's in perfect condition except for the not running part). I've heard forged pistons don't make sense in a stocker. Any opinions? Are there any "low-cost" forged pistons out there that may not be great for a suped-up ride but nice for a stocker? I just don't want to do a bunch of work and have a piston fail down the road. Are there any other "mine-as-well replace those while you're in there" parts (bearings, etc) that I should be thinking about? Thanks for any input, except "I'd swap in a WRX." or "I'd swap in an H6." or "I'd buy an '09 STI.", because unfortunately that is way out of my scope right now. Link to comment Share on other sites More sharing options...
McCarthy69 Posted November 10, 2008 Author Share Posted November 10, 2008 without any plans for engine mods oem pistons should be fine. when your in there replace whatever had failed and caused it to seize and put in all new bearings and seals along with new piston rings. also if you have to tools to measure the cylinders for out of round and taper do that too or take the block to a machine shop and have them do it to make sure the block will be worth rebuilding. also i see alot of ppl replacing the oil pump when theyre doing a rebuild. Link to comment Share on other sites More sharing options...
KnifeyMcShanker Posted November 10, 2008 Share Posted November 10, 2008 Yeah, I've always heard to do the water and oil pump while you're in there. Probably worth it to put a new timing belt on too unless your old one is fairly new. Link to comment Share on other sites More sharing options...
jonklein611 Posted November 10, 2008 Share Posted November 10, 2008 Also do the timing belt tensioner. Link to comment Share on other sites More sharing options...
McCarthy69 Posted November 13, 2008 Author Share Posted November 13, 2008 check the timing belt idlers. I had one go bad and it was wearing a groove in the belt Link to comment Share on other sites More sharing options...
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