Subaru Impreza GC8 & RS Forum & Community banner

41 - 60 of 91 Posts

·
Registered
1995 L
Joined
·
102 Posts
Discussion Starter #41
I’ll just have to find and open spot with enough meat on it to drill/tap when the time comes. Nothing happens quick with this car :lol::lol:

With temperatures in the 40’s I did venture out to do alittle work to the car, but nothing performance oriented. Turns out the body shop partially cut the antenna wire and as a result the radio reception has been poor. Also it was cracked really bad. So I took an hour and put a new one on. It’s a small detail but looks and works much better.



 

·
Registered
1995 L
Joined
·
102 Posts
Discussion Starter #42
Well it’s been sitting quietly all winter. Still snow in the forecast and 30 degree temps mean I don’t want to be in the cold garage. The few reasonable days this year were spent fixing the Baja and putting the GT350 bits on the Mustang. I couldn’t wait any longer and toughed it out today and started to wrap up where I left off last year. Remote mounted the oil press sender as it wouldn’t fit under the alternator, connected the lines for the boost gauge and ran all the wires through the firewall and into the gauges. The oil temp sensor is still waiting for the oil change which will happen soon hopefully.

The last of the parts should arrive tomorrow to rebuild the JDM axles and if everything goes according to plan, the RA trans and LSD R160 will get installed this weekend!

Until then, glamour shots from a happier, warmer time... last summer.
 

·
Registered
1995 L
Joined
·
102 Posts
Discussion Starter #45
Lots of little stuff done in the last few days. Had a small leak at the line for the oil pressure sensor so I had to redo that. Changed the oil and added the temperature probe to the drain plug and ran the wires to the gauge inside.

Then I went to finish up this stupid rear diff. If I could do it all over again I would throw it in the trash and just spend the money on a new, modern, better rear LSD. I was trying to save money since I already had the early JDM R160 LSD sitting in storage with both special axles. That was a dumb move

The rear diff has been sitting assembled since Nov/Dec. I pulled the axles out recently to get them ready and when I unwrapped them (they were wrapped in shrink wrap) one has a ripped boot and and some spline damage.

I bought some aftermarket boot kits and after fighting with them for 45 minutes and being unhappy with the results I ordered the OEM ones from the dealer. Since I had them apart anyway and was waiting for the correct boots, I decided to refurbish them the best I could. I found the super hard to find dual spline DOJ on Amazon for $28 and installed that.




Then I checked the spline damage on the short side. It was pretty bad and wouldnt engage with the Diff. The splines at the tip were twisted and half missing.


Of course the internet is full of misinformation and there were a ton of old threads claiming the USDM 2.5rs axle fits in the short side so I went and bought one. Although very similar, the USDM axle has an extra bit of taper at the end of the shaft (the USDM diff is not tapered) to help engage the diff. Also the USDM axle doesnt have a very deep circlip groove because the clip stays in the diff.

The JDM axle has no extended tapered part to the shaft as the diff has the taper. Also the groove is deeper as the axle holds the circlip not the diff. The USDM axle fully engages until the opposites shaft is inserted, then it interferes. It also will obviously not stay in place without a proper circlip.

I could remove the damaged section of splines from the JDM axle and run only 2/3 the normal spline engagement or modilfy the USDM axle so I chose to modify the USDM axle. My cousin is a machinist for and OEM supplier so he helped me machine the axle to the correct dimesnsions to mimick the JDM one.

Before and after machining is below.




The worst part is, this is one that I bought back in the mid 2000’s from someone who said it was a “mechanical LSD” Which everyone thought the same thing back then. I think it was proven to actually be an early Viscous unit. All this headache for a VLSD..... But at this point, it’s all ready to go and I’m just going to install it and drive the crap out of the car. I can always swap in something better down the road. This was genuinely a bad decision trying and save a few bucks instead of just spending the money on a proper rear diff.
 

·
Registered
1995 L
Joined
·
102 Posts
Discussion Starter #46
Well, it’s done. It took ALL day yesterday but the RA trans is in along with a new rear end. Went over to a buddies garage and he let me use his lift and helped me out. Got it done in a single day with very little snags. And it’s now very, very, awesome!




Had some extra bolts and lateral links on hand in case the right side wanted to be as difficult as the left side was this past fall. They were actually easier to remove. Replaced the bolt and links anyway since we were there. Just need to get the proper swaybar to fit with the new links now.



This trip back and forth put 2 more hours on the car. Found a few more issues I have to address. The oil temp gauge works fine while stationary. Once I start moving over the course of about a minute it slowly drops to zero. Then when I stop it slowly comes back up to where I would expect. Wiring checks out so I’ll have to figure that out :facepalm: pressure is good the whole time. Temp probe is in the drain plug in the pan.

Super glad to have this giant hurdle behind me and start really enjoying the car.
 

·
Registered
1995 L
Joined
·
102 Posts
Discussion Starter #47
Weather was amazing yesterday so I finally got the opportunity to wash this filthy thing.



Took it out for dinner with my wife for some more shake down. The parking lot at Qdoba isn’t in the best shape so I was taking it really slow. Encountered some uneven pavement followed by a small scrape noise and then things got really loud.



Stupid parking lot grabbed onto the exhaust clamp bolt and ripped it right off along with the tang it grabs onto! A new one should be here tomorrow or the next day. At least it’s a cheap and easy fix!
 

·
Registered
1995 L
Joined
·
102 Posts
Discussion Starter #48
New exhaust clamp came earlier this week, so that is repaired.

Because the old adjustable swaybar isn’t compatible with the new lateral links/endlinks, I went OEM. Pulled off all the aftermarket mounts and bars and links and put new OEM in it’s place. Going to go back to a 20mm bar for now for an 02-03 WRX sedan. Maybe I’ll kick it up again in a year or so if I redo the struts/springs but it’s nice to have new stuff on there. I am surprised I got the swaybar mount bolts out of the chassis without catastrophe!





Now I can focus on cleaning stuff up and prepare to swap to the Link G4+ and start the tuning process (still trying to find someone local to do it for me).
 

·
Registered
Bluebird
Joined
·
693 Posts
Nice updates, I'd like to see another proper photoshoot like you did on the first post. I had that image of it on the snow as my background for a while.
 

·
Registered
1995 L
Joined
·
102 Posts
Discussion Starter #51
Nice updates, I'd like to see another proper photoshoot like you did on the first post. I had that image of it on the snow as my background for a while.
I’ll get some real pics one of these days. Usually I am doing testing or troubleshooting when I have it out and not in a position to take pics. That first pic was taken at Bonneville salt flats.
 

·
Registered
1995 L
Joined
·
102 Posts
Discussion Starter #52
Wideband arrived but no time to install it. Trying to find a few days off so I can schedule some dyno time.

I have been putting on a few miles here and there. Drove it to work today.

 

·
Registered
1995 L
Joined
·
102 Posts
Discussion Starter #53
What I thought was going to be an awesome car filled summer has not been. Too much work getting in the way. Zero track days an the car has barely been touched.

I also blame this little lady that we picked up five weeks ago or so.


She has been taking my free time. Putting some more miles on the car around town recently and found the permatex thread sealant on the oil pressure gauge line was leaking so I fixed that. Got two check engine lights, one for IAC and one for Pressure Sensor. Hooked the LINK G4 up so I could read sensor voltages to troubleshoot and didn’t really see a problem but the IAT sensor I had installed wasn’t reading. After an hour and a half of tweaking settings and recalibrating sensors, I realized the JDM STI wiring diagram I have shows a different pin than the “plug and play” link does. Swapped pins and everything is good.

I REALLY want to get it on a dyno for tuning this summer but it’s been pretty hard to find the time.
 

·
Registered
2001 SRP RS Coupe, 05 FXT
Joined
·
363 Posts
Glad you got the CELs figured out, but a bummer when you can't find the time to work on the car=.

Puppy is cute though!
 

·
Registered
1995 L
Joined
·
102 Posts
Discussion Starter #55
Finally got the wideband 02 installed! I ended up using a Spartan 2 Lambda from 14Point7. It was really affordable and I was curious how it would work. Last time I did this on the Baja I used an Innovate LC1. Didn’t have good luck with that company... I purchased a new 02 sensor connector from iwire, and wired in the wideband just like the OEM one. This will also enable me to swap between the factory narrow band and the wideband if I decide to use the OEM ECU again. I added a 4th wire to the connector on the harness side and ran a separate ground. I did not use the narrowband simulator or status LED wires at this time. Plugged it all in, changed the input in the ECU from narrowband to wideband and plugged the calibration numbers into the Link software and so far so good!





Now only if I had a clue as to what I was doing. Still hoping to get it on a dyno for tuning this season, but I’ll be messing around with it until then and hopefully learn something.
 

·
Registered
1995 L
Joined
·
102 Posts
Discussion Starter #56 (Edited)
Not much progress, been doing alittle bit of tuning. One of this weeks cars and coffee locations was featureing “JDM Legends” So I took it out and ran into this guy:

My two favorite Imprezas in SE Michigan!

Got home and decided to go out and spend $3 on a micro USB to USB OTG cable for my phone. Now I can get the real dash app to work on my android devices and the Link ECU.

It’s kind of gimmicky but it really added a lot of functionality to the car for under $3. If I just want to view a few parameters I can just plug my phone in vs having to haul the laptop around all the time. It’s very configurable and kind of neat to be able to display this info on a 1995 OBD I vehicle.




I have it scheduled for dyno time in about three weeks. Hopefully more good updates then.
 

·
Registered
1995 L
Joined
·
102 Posts
Discussion Starter #57
Baja has been in need of maintenance and the Mustang is in for warranty work so my car wrenching time has been focused on getting the Baja ready to go before winter.

Parking brake stopped working a few months ago. Not only did the cable snap, but the backing plates were so rotted out the shoes were no longer secured either.



So I replaced the backing plates, bearings, hubs, cables, rotors pads, and all the parking brake pieces.





It sucked with all the rust but it’s back on the road.

With that mess out of the way, I had the garage open and my neighbor took a moment away from his BMW E30 project and offered to help me make a mount for my zip tied oil pressure sensor.

This is what we came up with. I’ll just have to shoot some spray paint on it when it is a little less humid outside.

 

·
Registered
1995 L
Joined
·
102 Posts
Discussion Starter #58 (Edited)
FINALLY! Big, big updates! Dyno Day!

Instead of working on the car this past weekend I took the Mustang to the track. It was wet, it was a handful and a little scary, but it was an absolute blast!

Two days ago I put the mustang back into street mode and I finally got an alignment on the Impreza after the lateral link swap. Nothing crazy but it’s a lot better to drive.

Yesterday I prepped the car for it’s longest journey yet. Topped off all the fluids and pressures and double checked everything I could think of. Drove it carefully two and a half hours in hard, driving rain to Kalamazoo to spend the night with the inlaws. Drove over on a modified base map and was careful not to get too aggressive. I was paranoid. Every noise, vibration, hiccup made me question it’s reliability and question the project as a whole. I worried my once completely reliable car had been ruined.

We made it, but I was exhausted from the loud exhaust and worrying about every detail as well as the extremely rainy conditions.

I woke this morning excited yet nervous. I know every detail of this car and knew it wasn’t 100%. I started second guessing every vac line routing, every wire connection, everything that I have plans to tidy up but didn’t have time to.

I called earlier in the week to confirm my appointment and had asked if I would be able to watch the car get tuned. I was told they normally do not but it should only take 4 hours if everything went well. I Left Kalamazoo for Paw Paw where Whalen speed R&D is with my father in law in chase to give me a ride. I chose this company because of their familiarity with the Link G4+ depspite the fact they are heavy on the Mitsubushi side.

I arrived early and the doors opened at 9am. The car was strapped to the dyno before I even finished paperwork.We went over my goals and the cars current setup, next thing I know things were rolling and it was making noise.





I asked what time I should head back and they invited me to stay and watch...and learn, so I did!

All said and done things went really, really, smoothly. For a stock setup, stock turbo, injectors etc. i was very happy with the results. The injectors topped out at around 20 PSI in the little VF24.



Then the launch control feature was turned on and dialed in. About 3 hours after rolling onto the dyno it was rolled off and ready to go.

WOW! What an improvement. The car is wonderful. I kept on expecting a hiccup, a misfire, an overboost or something to fail on the drive back to Kalamazoo. Nothing, It ran flawlessly and pulls really, really good! The powerband is so smooth and it revs so freely. The idle is much improved as well.

Loaded up the car and headed 2.5 hours back home, almost all highway. It was fantastic the whole way home. It reminds me of how it used to be a long long time ago. All my fears and doubts were discarded and I trust the car again. It was longest/farthest I have driven the car in past two years and it handled it problem free. I can’t wait to drive it more and more and more!

Over the winter I will focus on getting it track ready. Catch can, oil cooler etc. I’ll relearn the car with the new found power, limited slip diffs etc. and then maybe look at larger injectors and E85. It looks like there is still a good amount of power to be unlocked potentially.

Also, the new headunit is awesome with the hands free and Bluetooth capability.

I LOVE this car!
 

·
Registered
2001 SRP RS Coupe, 05 FXT
Joined
·
363 Posts
Great to hear the car is running well. Solid numbers. Really like how subtle this car is; love the green.
 
41 - 60 of 91 Posts
Top