-
Posts
7554 -
Joined
-
Last visited
-
Days Won
94
Content Type
Profiles
Forums
Gallery
Store
Everything posted by Numbchux
-
adding fuel injection to Ea71 1978 Brat
Numbchux replied to subarujim01's topic in Subaru Retrofitting
Yes, that's how fuel injection works. The ECU opens the injectors for varying amounts of time (the flow rate of the injector and pressure behind it determines the volume of fuel that passes through in that time) depending how much fuel the engine needs for that revolution. A programmable ECU can further be adjusted to accommodate different engine sizes and other variables (like forced induction). The question is if the ECU and Injectors are capable of accurately opening for a short enough time to supply a small enough amount of fuel to run that efficiently. I wouldn't bet either way, but it's enough of a question that I'd want an answer before I plopped down over a grand. On the top of the page, is this text "ASK OUR EXPERTS: 1-866-464-6553". I bet a person could call that, and ask if the Sniper EFI 2300 can control a 1.6l 4-cyl making about 75hp. And they'd have a real quick answer for you. -
Yes, Subaru mechanics lift from the pinch welds. So you're lifting with a scissors jack on the pinch weld, and setting on a stand? Yuck, that sounds miserable. I've been using one of those ~$75 aluminum jacks for 15 years. They're SO much easier to work with, and really not difficult to move around and/or store. On the newer multilink cars (yours is one of those), I straddle the 2 bolts for the subframe brace (the 2 bolts pictured, not the one holding the plastic on) with the saddle of the stand.
-
Mechanically, easy. Electronically.....well, as they say, "if you have to ask." AFAIK, all the 5EAT cars had immobilizers, which means the TCU is looking for a CAN signal from other modules, which will be virtually impossible to make happy outside the car for which it was designed. Probably would require a standalone auto trans controller (which I've never seen done on a Subaru transmission, those controllers generally are not designed to control AWD as well). And quite a bit of custom programming. 4EAT is a decent trans. I don't like the standard AWD system, but there are models with the VTD on the 4EAT.
- 6 replies
-
- 1
-
- transmission
- 2011 impreza
-
(and 1 more)
Tagged with:
-
This Coolant flows through the IAC and Throttle body to prevent icing. Almost every manufacturer does this (some through the EGR valve, as well), yet in real world situations, they very rarely ice up (here in Northern MN, we see some of the coldest temperatures that a car might have to deal with, and I've bypassed this system many times).
-
This, SPDT. I used a pushbutton shifter from a PT4WD Loyale to control the center diff lock on an RX FT4WD transmission, and it's a very simple circuit. SPDT switch provides power to one of 2 solenoids by the LH strut tower.
-
adding fuel injection to Ea71 1978 Brat
Numbchux replied to subarujim01's topic in Subaru Retrofitting
It's certainly possible. It all comes down to how fast the injector actuation is, and how quick the ECU processor is. That pump and injectors are certainly considerable overkill, but that doesn't mean it can't work on a smaller engine. But that probably is the only big hurdle. Might be able to shoot a quick message to Holley and see if they think that hardware would work on an engine this small or if they can supply smaller injectors. Probably a quick answer for someone that knows. -
adding fuel injection to Ea71 1978 Brat
Numbchux replied to subarujim01's topic in Subaru Retrofitting
That will regulate the fuel pressure going to the injectors. The problem comes with the fact that it has 2 100lb/hr injectors, when you turn down the duty cycle on those enough for a 1.6l engine, they will not have very much resolution (how much is dependent on the processing power of that little ECU). https://fuelinjectorclinic.com/flow-calculator Punching some quick numbers (entering 2 cylinders, as it seems to be calculating it based on one injector per cylinder), assuming you make about 75hp at the crank, You should be running about 20lb/hr injectors, but that kit comes with 100lb/hr units. If the Injectors can be replaced with smaller ones, it would probably work very well. -
Very good question, and sounds like a great project. I've seen one of those Holley kits used on a domestic V8 and it seems like a really cool option. I have not seen one used on a Subaru. As such, I'd recommend starting a new thread in this section, it'll get more visibility there. EDIT: just noticed that you already did, I got a notification of a new post here and got ahead of myself. Carry on.
-
The control arms and steering rack have to go down with the diff, so it's generally easier to use the stock crossmember there, and then build pads for the motor mounts above that. IIRC, I don't think 4" is enough to safely clear the front diff under the transmission.
-
They are the same displacement engine, and the same basic engine layout. But different in almost every detail. Turbo is DOHC, non turbo is SOHC. Turbo has a semi-closed deck block and lower compression. Non-turbo is open deck. Yes, hood scoop feeds an intercooler. Transmission is similar, but different. Gearing and AWD differences. Suspension is similar, but stiffer, etc.
-
Man, I respect your methods more than almost anyone else who posts here....but yikes. I would definitely call the bare connections at the alternator and A/C compressor sketchy (though I'd guess that that's been done since you had it). But beyond that, I see so many un-covered, and what appears to be unsupported wires. And hearing that they're a relatively high-amperage headlight circuit concerns me even more. Left as-is, that stuff will chafe and short out. I also see 2 fuse/relay blocks (one in the spare tire well, and one in front of the LH strut tower) that don't appear to be attached. It'd be fine for a test-drive or even several, but I wouldn't call that done. Just my $.02. I do find this story hilarious, and I'm glad to see that it's fallen into some hands that will keep it in good shape.
-
There is a serial number by the starter, but I've never seen a way to search the databases by serial number (I worked at a Subaru dealership...I've tried, we could look up a VIN, and that would give a serial, but not the other way around). The newer engines had the vin etched into the vertical part of the block on the passenger side of the bellhousing, right next to the seam with the transmission. But I doubt this is new enough.
-
Here's the list of vehicles that came with that ignition coil part #: http://opposedforces.com/parts/info/22433AA230/ Yea, '93-'95 Impreza 1.8. I see someone who went to the trouble to make A/C lines to adapt the EJ compressor to the EA82 body. I see some sketchy wiring! Look at the alternator and compressor. Also what is the bundle of wires draped over the engine?! I see vacuum lines for the 4WD, so I assume it still has the FWD/4WD stock transmission.
-
I don't think I've seen AWD problems cause a vibration. Usually AWD failure, or binding. When I read that post, it sounds to me like it was driven with mismatched tires for a fairly short time. And if they were the same size, just a different brand, I would say it's probably fine. I would rotate the tires front-to-back, and see if the vibration changes (going from feeling it in your butt to your hands/steering wheel, or vice versa). Vibration is most commonly just tires out of balance. Otherwise it would be helpful to know when the vibration occurs (accelerating, braking, certain speed, does it change with engine speed or vehicle speed, etc.) as there are a host of other things that can cause a vibration.
-
I don't know what the tire size is, but the bolt pattern is the same. Offset is extremely close. Wheels will definitely bolt on. I'd bet money (and I'm not a betting person), that the tire size is close enough. But find the tire sizes (Baja would have come with a 225/60r16 stock in the US) and run them through a tire calculator.
-
A gas engine needs 3 things to run. Fuel, ignition, and compression. Diagnose them individually. Getting the right gasoline mixture can be a challenge, but starting fluid is volatile enough that it's MUCH more forgiving. So that means you have a compression or ignition issue. Pretty unlikely to completely loose compression on all 4 cylinders so suddenly. So you're likely down to ignition. That means more than just having spark. It has to happen at the right time. Within about 10 degrees and you should get a pop. An EA82 will run on just the LH bank, as the distributor is driven off that cam, regardless of the RH side (I had a buddy that stopped at my house because his EA82 was even more gutless than usual, turned out his RH cam had seized). So you can assume that your problem is on the LH side. Unlikely that your ignition timing has changed considerably on it's own, but completely possible that the belt has. It's not terribly hard to pull the other timing belt cover on the LH side, and compare the mark on the cam pulley to the 3 lines on the flywheel. I bet it's jumped (I've heard of timing jumping as a result of bump-starting, so if it had a dead battery....).
-
Most has been said. Brakes and air filter should be priority #1 Tie rod end will either be a little inconvenience ranging to a genuine safety risk depending how bad it was. If it was more than just a little sign of wear, they should have refused to do an alignment on it. If you trust the shop to take care of you, it's probably just something to think about in the next year or so. Also possible that they don't care about your safety, or the fact that doing an alignment on a car with bad steering components is a waste of time and money. The leaks aren't an issue, as long as you don't run out of fluids, and don't park on any nice concrete. So make sure to know how to check the relevant fluids (engine oil, transmission fluid, and power steering fluid, in this case), and check them every gas stop. The only exception is if there's a lot of oil getting onto the spark plug wires. Pull the ends out of the heads (should be fairly easy to do that), and look for oil on there. If there's a lot, that can be an issue for the ignition system. Change the rear diff gear oil. I think it's about a quart (have 2 handy) of 80w90 GL-5 gear oil (the most common stuff you can find). Buy a little transfer pump that'll fit on the gear oil bottle. Jack up the car, use a 1/2" breaker bar to pull the 2 plugs (upper fill plug first, if you drain the oil, and then can't get the fill plug on, you're screwed, although if they checked the fluid, they would have just had the plug out). Once the old fluid drains out, put the lower plug in, and pump new oil in the top plug until it overflows. Then put the top plug in and your done.
-
Yep, my immediate thought is sticking brake. They can do all kinds of weird things. I occasionally check brake temperatures to make sure they're even. The best test is drive on the freeway for some time (30 minutes+), and then coast to a stop on the exit ramp using the brakes as little as possible. Then I get out, walk around, and feel the heat off the brake rotors (use caution, if they're working correctly, the rotors should just be warm, but if you've got something sticking, it'll be HOT, you'll feel the heat radiating well outside the wheel). Rule of thumb, is they should be about the same temperature side-to-side (fronts likely warmer than rears). Either way, I'd have those apart, and carefully inspect every moving part. I'd push the fluid out of the calipers to make sure there is fresh fluid in them and they move well, I'd clean and grease the slides, make sure the pads move smoothly in the mounts, etc. Grease everything with a high-quality grease (I use the purple bottle permatex ceramic brake grease).
-
Yep, 3 pin sensor serves for the ECU and gauge. So it's exposed to the exact same temperature, so a calibration issue seems most likely. But I don't like to encourage just swapping parts without diagnostics. Any codes? I'd point an infrared thermometer at the coolant bridge and verify actual temperature. And then read the temperature at the ECU via an OBDII reader. You can buy an infrared thermometer and OBDII dongle (read codes and temperature from you phone) on Amazon for $30-40 combined.
-
If there's no bushing between the absorber shaft and the body, you may want to consider shimming/slotting the mount in some way to reduce stress on it. Because of the forward/aft movement of the rear swing arm, it will bend that rod a bit. Both WJM and I tried mounting factory rear shocks (his were BE/BH Legacy, and mine were NA Miata) to an EA82 by deleting the bushing. It worked fine for a month or so, and we both snapped a shock absorber shaft right where it meets the upper mount. Not a fun experience. I switched to an NB Miata shock, which does use a big bushing on the top, and never had a problem.