Numbchux

awesome! redline is 6500, so that fuel cut probably isn't even the pump.....Cool! on paper the EA82t pump would not be enough, glad to hear that's not the case in the reality. although I might look into a fuel pressure gauge to keep an eye on it. wouldn't want it to be running lean

I was responding to bheinen about the RX drivetrain. I've never had a welded diff. and do not have a 3.9.

I don't have an LSD. but I've got an open 3.7 I'd let go.

tempting...had fun a couple years ago. that's the weekend between STPR and Nemadji II. anyone want to buy an RX trans or 5-lug swap? might pay for the trip....

They got the N/A 2.5 motor swapped into the WRX so they can run Open Light class this year. then got it cleaned up, and stickered up..... oh yea.....I'm crew chief this year

the biggest thing with the 1.8, is they do not have a knock sensor. so if you ever decide to upgrade, you're going to want to upgrade your ECU/wiring as well.

I would argue the point as to which is better. the only advantage I've seen, is more storage room in the car since there effectively aren't strut towers. also, look closely at the WRC08 cars. they are not multi-link..... But, one thing is for sure, there is far more aftermarket support for the modified macpherson setup. adjustable links/arms, struts, springs, coilovers etc. etc. also, I wouldn't recommend running the stock multilink rear shocks on an EA82. they are not designed to use a bushing between the shock rod and upper mount.....I removed it, and snapped that rod in about 1k miles. WJM did the same on his RX with the same results. Although there is a miata shock that is a direct bolt-in with coilover sleeve springs. full coilovers designed for the multilink setup can be used with the upper bushing. but again, your selection is very limited. better now that the imprezas share that platform, but you're still looking at either el cheapo coilovers, or uber expensive ones. Either way. like Gary said, you sound like you have a decent idea of what you're doing, and the means to do it. In which case you have nothing but support from me. I'm just offering my experience with building subarus for use in all kinds of motorsports to get you the best setup possible. I'm still un-sure of your reasoning for doing this, so I'm kinda shooting in the dark....but either way. Also, what are your plans for the front? If you're going to that kind of trouble to improve your geometry in the rear....you'll have a similar project in the front, or it will all be for nothing.

loyales don't have rear speakers. the mounts are in the rear doors for them, though.

anything's possible: IMHO, there aren't enough gains to justify the project. unless you have a lot of time, money, and donor cars to hack up.....and even then, I don't know why. if you're going to hack up the back of the car, and put in an entirely new suspension system, at least use the modified macpherson setup that's so much more common. then you'll have a ton of options for suspension setups.

I'm more interested in this....so it's AWD? what low range gears? what front diff?

hell yea. that frame you've built for it looks pretty wicked. Can't wait to see the end result!!

I don't know of any aftermarket ECU that can run a standard OBD diagnostics port. But they all have some way of communicating with a computer to monitor and adjust it. usually a Serial or USB cable. What are you trying to do?

Sweet! not having an 02 sensor must have been throwing it into limp mode as soon as it was hitting boost. which EA82t sensors are you using? I'm curious about that. very interesting that that worked.....

yep, pressure and flow ratings are almost the same. the turbo EJs require quite a bit more volume, but any N/A one will be fine.

for starters, I'm no expert. but I've done some CR calculating.... I think you are going to need to start with some math, and finding out exactly what ratios these combinations would yield. I've heard of people just filling the chamber with oil and measuring it. as far as I know, shaving the heads and using thinner gaskets will have the same (or very similar) effect on the compression. I think the best option, would be shaving the heads, using stock gaskets, and then using custom pistons to dial in your CR. I know there are companies that make custom pistons for the EJs (my buddy just got a set from CP pistons), but they make them unique to your exact bore measurements, valve reliefs, and CR. it seems that they could make them for a different motor......I dunno.

yea, 02 sensor would probably be a good idea....but I don't think it would cause the condition you have. only 3 things, I can think of, would cause it to fall on it's face like that. faulty knock sensor, pulling timing. faulty pressure sensor, sensing over-boost and cutting fuel. or insufficient fuel delivery. we know your fuel pump is rated for a fraction of the flow required for the engine, so I would wait to bash your head against the wall until you've solved that. you don't really need to hold out for the 255. unless you plan on some pretty serious mods. stock is 150 (which is about 40gph). here's one that would work very well with the stock motor for much less than the walbro: http://www.summitracing.com/parts/SUM-G3138/

my ideal setup wouldn't have very good crawl ratios, because I want to use an automatic. I'd also like to use an R180 rear end, and AFAIK, the lowest they were geared was a 3.90.... but I think an auto trans designed for a gas motor, behind a diesel, would be kickass. also.....a built/loaded baja like that, probably 3500 lbs. But, that setup is if money were no object. I'm not the one to talk to about really going hardcore on a reasonable budget with a subaru. I hit my breaking point (pun intended ), and switched to a Toyota.....

my money is on fuel pump. the EA82t pump is about 2/3 the volume of the EJ22t one.....not enough. as soon as it gets into boost, and really opens up those injectors, the pressure drops, and takes a minute to catch up.

STi, definitely. '05+ to be specific. but those would require 5x114.3 hubs and such. somewhere around 25:1. what's the lo range on an EJ16 box? lower than the EA82 1.59? unfortunately, VDC is only available with the auto. it would not be easy to get it to work without the TCU.

yes

yep, just take the flywheel and clutch off your '98 motor, and bolt it onto the '92. no problem.

^I think aftermarket parts, designed for a subaru are acceptable when discussing an "All Subaru" wheeler. but taking parts off of another car brand, and fabricating them to work on a subaru is over the line. bigger tires weren't designed for subarus..... wheels....well, yea. almost no options. some AA wheels that were made for subarus, but I think we might have to overlook that. that said.... some pretty conservative suggestions. he said ANY combination of subaru parts. Subaru made a ton of sweet stuff Baja made into a 2-door, longbed Exocage/tube bumpers/integrated winch EDM Subaru diesel swap some big ol' redneck exhaust stacks behind the cab 8" of lift (probably 8" blocks at the crossmembers, replacing the stock 1" block, 8" total strut extensions, stock struts, and mild lift springs.) 31" Kumho M/T tires on 15" Team Dynamics wheels 276mm front brakes and 290mm rear r180 rear diff/axles/hubs, probably welded. now, the transmission is the hard part. as I don't know what was available with the diesel. But I'm thinking a 5EAT for a gas motor would probably be geared pretty low for a diesel. add the big tires, and it would probably be just fine on the freeway. add a big ol' tranny cooler, and let the TC slip offroad. SoobieDoo is onto something with the VDC thing. if you've got 10 minutes, check out this video.....the subaru VDC demo is pretty cool: I think it would be very hard to retrofit....but the results could be pretty sweet.

both temp sensors are on the coolant bridge. one for the gauge, one for the ECU. I think the ECU is the 2-wire one. That's not a bad idea, if the ECU isn't sure how warm the engine is, it could effect your idle and such.

valves and such are comparable to 2.2 stuff. you would gain some grunt from the compression bump....but that's about it. you'd be better off throwing a 2.5 shortblock under the 2.2 heads.

I'm not sure. I've never had an outer joint apart. but from the joint, out, they're very different. I'm not 100% sure what you're doing, so let me clarify. you've got XT6 hubs and knuckles, and an RX trans. And you have a set of EA82t axles that you'd like to use. And either way, the axle has to be shortened to work with the EA81 track width. If I'm understanding that correctly, I would say getting XT6 axles and having them shortened would be worth the extra effort. you'll need the XT6 outer joint/stub anyway, and the XT6 inners are already 25 spline.