Just ANOTHER 1990 Legacy turbo conversion.... hahahahahah

douglas vincent · Post by **douglas vincent** » Tue Jul 28, 2009 5:38 am

All 4 painted doors are on.

Sedan rear windows are DIFFERENT than wagon windows!!!! But fairly easy to swap....

1990 wiring door harnesses have different plugs than 1991 SS harnesses. Pain in the ass. The front doors I just cut and spliced. The rears i pulled and swapped.

douglas vincent · Post by **douglas vincent** » Sat Aug 01, 2009 1:54 am

Annnnnnnnd......

Boost leak found. Finally.

douglas vincent · Post by **douglas vincent** » Fri Aug 07, 2009 6:02 am

It won't look too bad when fully painted...

Did some more "tuning" on it last wekend on the way to the coast with the Seaside cruise. Was again running"RICH", so pulled a bunch of fuel. Also changed the timing map so pulling more timing in the 4500-5500 area.

Other than the lag, I love it.

93forestpearl · Post by **93forestpearl** » Fri Aug 07, 2009 6:09 am

I think I see a wagon at the end of the row.

douglas vincent · Post by **douglas vincent** » Tue Aug 11, 2009 8:11 am

PUSHED the wagon hard last night. More than one 1-5th pulls, although I let off on fifth, thats damn fast.......

Logged somestuff as well. The JECS maf is hitting 5.25 volts! But with the 800cc injectors, the modified signal is just 4.71, still good for a few more PSI! I think I can get about 21-22 psi out of this turbo before I max the MAF and need bigger injectors.

douglas vincent · Post by **douglas vincent** » Mon Sep 21, 2009 5:10 am

Well kids.....

I am famous in case you did not know.

Anyway....

I have found and fixed MULTIPLE boost leaks. If you have never used a pressurized boost leak finder thingamabob, do soo at the first instance you can. If you are TMIC, you are probably not going to have many issues, cause you have maybe 3 clamps.... But FMIC? Get the leak tester OUT!!! I had bad welds, leaking BlowThroughMAF, bad clamps and then I found some uppipe leaks. All over the course of about 2 months.

Everytime I went to the track, NOTHING was improved. Even though the wagon felt faster on the freeway, the leaks kept me down on the drag strip. they are insideous!!!!!! I hate them!!!! Arrg!!! I am an angry pirate!!!! Arrrrghhh!

But now it is getting ALOT better. I may have ONE exhaust/upipe leak now? But it is hard to tell cause I can't stick my head down there at 5500 rpmmmm.........

And I have made the atmospheric BOC into a recirculating BOV, BIG diffference in shifts now when racing.

Traded $100 worth of tires for a PLX R-500 Wideband and datalogger!!!!! Thing is flipping awesome. With this I have done some more tuning and the care is teh Fastar!

And in conclusion for now.....

Gonna race at BOTI this coming weekend, but in the bracket racing, cause the family wagon is never gonna be THAT FAST...

555BCTurbo · Post by **555BCTurbo** » Mon Sep 21, 2009 8:50 am

Too much Pabst Doug!

kimokalihi · Post by **kimokalihi** » Mon Sep 21, 2009 4:04 pm

How come your hood is so high above the fenders? That's how mine looks right now in the front of the hood because it's hitting several things on the top of my engine and won't close all the way.

douglas vincent · Post by **douglas vincent** » Mon Sep 21, 2009 4:31 pm

I put spacers into the hinge area for heat to escape.

93forestpearl · Post by **93forestpearl** » Mon Sep 21, 2009 7:45 pm

Yes, leak testers can be a godsend. A PVC endcap and a valve stem made quick work of it.

Running in speed-density can mask those issues for a while.

Post by **Legacy777** » Fri Sep 25, 2009 6:16 pm

Are these home made pressure testers? I'd be curious to see one and how it's setup.

douglas vincent · Post by **douglas vincent** » Sat Sep 26, 2009 1:24 am

Dynoed today.

On a Mustang dyno (GP MOTO here in Portland, basically a privately owned dyno), 21psi netted me 294 whp, 300 torque. At 15 psi on the Mustang I did about 245/250. I compare this to the 292/298 I put down on a dynojet at 15 psi. IF, and a big IF, I was able to drive over and dyno on the dyno jet and get the same numbers as before (292/294 @ 15 psi), then the Mustange numbers equate to about 350/350......

Sorry, no dynograph.

The good thing is I was safe in the tune, and the 292 whp was FLAT from 5000 rpm to 6500.

I do have a crapload of blowby. But car runs well and doesnt smoke just driving around. Will be trying to go out to PIR 2nite and see what happens. If I can't break 13.3 I am gonna shoot something...

douglas vincent · Post by **douglas vincent** » Sat Sep 26, 2009 8:48 am

Don't have to shoot anything!

got 5-6 runs in....

13.6 @ 104.26 w/ 2.009 60'
13.4 @ 104.89 w/1.993 60'
Turned the boost up 1 psi
13.5 @ 106 w/ 2.082 60'
13.7 @ 106 w/ 2.2 60' bleah
13.9 @ 107 w/ 2.?? 60'
and finally the last run of the night....

60' 1.946
1/8 8.381
mph 86.15
1/4 12.994
mph 107.38

STOKED!!!!!!!!!

douglas vincent · Post by **douglas vincent** » Mon Sep 28, 2009 4:01 am

Made it to BOTI.

Ran and didnt make a fool of myself. Best of 13.1 @ 106.xx

Then broke a piston or two a few miles north of Woodburn on the way home.

I suspect I had a ringland issue to start with, which would explain the blowby. While racing @ Woodburn, I was unable to boost more than 20psi on the last two runs. On the freeway back I did a single pull to test boost after the engine had cooled considerably (1.5 hours) and SMOKE happened at 6250 rpm....

Made it back to the shop with just a tad of occasional pollution (sorry traffic peaple) and popped the hood and yup, puffing out the breather tubes.

Will be installing Wissco this time instead of the MAHLE.

douglas vincent · Post by **douglas vincent** » Wed Sep 30, 2009 6:53 am

Motor out.

Damn, 1.5 hours. All that shit takes awhile remove!!!!!

I pulled my wifes motor out, did the rear main seal and water pump (and of course the clutch and timing belt) and it was only 2.5 hours from jack up to drive away!!! Turbo motors have too many parts. hahahahaha

kimokalihi · Post by **kimokalihi** » Wed Sep 30, 2009 11:00 am

You must be pretty good at that by now. Do you use power tools? I don't have a compressor so I've used hand tools exclusively ever since I got my first car(truck).

Do you remove the engine completely to do a clutch job?

douglas vincent · Post by **douglas vincent** » Wed Sep 30, 2009 5:26 pm

I do have air tools which help in removing the pressure plate and flywheel. I always pull the motor to do the clutch, saves wear and tear on the body.

douglas vincent · Post by **douglas vincent** » Thu Oct 01, 2009 4:23 am

#4 for sure, probably small crack in #2. #1 and #3 are fine.

AWD_addict · Post by **AWD_addict** » Thu Oct 01, 2009 5:48 am

At least you broke into the 12s before the pistons broke!

Are you going to stick with the STi rods?

douglas vincent · Post by **douglas vincent** » Fri Oct 02, 2009 5:19 am

Yeah, rods are fine.

Turns out I cracked the ringlands in ALL 4 PISTONS! 1st for me.

My calculated compression ratio on that build was 8.26 -1. The new build is 8.45 -1, barely higher, but hey, the pistons were free, all I had to do was buy rings $80. Wiseco.

Pistons are in, heads are on. Although this time I am using the heads that were going to go on the Reddevil build, the JDM 97 Legacy Spec B heads that I had oversized valves installed in. Should rip a bit better.

Was going to race on Saturday, but going to the beach tommorrow night....

douglas vincent · Post by **douglas vincent** » Thu Oct 08, 2009 1:36 am

Up and running. Wisco pistons this time.

18 psi feels pretty good. Having some weird miss again, pretty sure it is a boost leak.

And my laptop crapped out today.

douglas vincent · Post by **douglas vincent** » Fri Oct 16, 2009 1:29 am

Fuck me in the butt as in unwanted prison love.

Old tune with old motor was effing spot on, minus the too far advanced timing.

New motor is all over the effing place for AFR. I actually DID plug in a head set and listen for knock and BAMN! Got it! But since my laptop locked up, was unable to tune. So i turned down the boost to wastegate (13ish) and all is good, just slower.

Then I got the laptop back up and running tonight. Added a bunch of fuel in. Turned the boost back up.

Boost still sticks at wastegate.

AFR is still SERIOUSLY funky. As in NOT in correlation to what I am tuning it to be. On the old motor/map I would be <10-1. Now 11-12 to 1.

I must have something weird mechanically. I did a boost leak test and passed with flying colors.

IF my wagon was Bart Simpson, I would be strangling the hell out of him!

Knock no matter what over 14 psi. Retarded timing to 17 and afr all the way down to 10-1. STILL KNOCKING, and randomly at that. BOO HISSS.

I have been having HORRIBLE issues with the AFR as stated above. I have also notice I have been having HORRIBLE voltage at the ECU. As in 11.9 while idling...... Messing around with trying to figure out what is wrong...... Replaced battery, alternator, tested this, tested that.

Someone posted this up.

[quote=Cougar4;28488057]What you are most likely seeing is a voltage drop due to wire loss. When a high amount of current flows through a small gauge wire the resistance of that wire will cause voltage to drop across that wire connection.[/quote]

DING DING DING, we have a winner!

A long long long time ago, before I turboed this car, I had fubarred some injector wiring. So I had installed a circuit breaker in place of the 30amp slow blow fuse for the injectors as I kept blowing the damn fuse. I needed to install the circuit breaker to keep the car drivable until I figured out the issue. However, as time went by, this fuse became OUT OF SIGHT = OUT OF MIND. So over time the wiring (multiple strand) had started to fail. I had since fixed the injector wiring issue but had not replaced the slow blow fuse.

Replace fuse and PRESTO, full voltage to ECU.

Also, I am sure this is why the wagon was running like crap with higher boost levels, the injectors just were not getting enough juice! And very likely why I popped the last motor. DOH!

madmallard · Post by **madmallard** » Sun Oct 18, 2009 3:32 am

...this is just incredible to read. videos, posts spanning multiple boards...I wanna know what they put in your coffee.

douglas vincent · Post by **douglas vincent** » Sun Oct 18, 2009 8:29 am

And the real reason for the damn miss I have been having?

Bad plug wire.

douglas vincent · Post by **douglas vincent** » Fri Oct 23, 2009 4:18 am

Wagon is running 98%.....

Cut off old 2.5 muffler and installed APEXI (?) 3" muffler!!!!!

OH
MY
GOD

Its so fucking loud.......

Suspect I will be cutting it off soon. I drove around to the front of the shop, parked, got out of the wagon, shut some shit down and then went to leave.....

But there is a cop parked across the street... It is so loud I can't leave and not risk the wrath of a dick cop.

But am leaving it on long enough to race this comng Saturday!

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A forum for 89-94 BC-BF(BJ) Legacy Owners and Fans

Just ANOTHER 1990 Legacy turbo conversion.... hahahahahah