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New member here. I just picked up a '87 Fiero GT with a 3400 turbo swap. I'm sure I'll have questions soon.... I'll have to search first of course....
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'87 Fiero GT-Turbo 3400 -
Cool,
Got any more specs on that bad boy?
~sam -
This is the ad of the car I bought. The build thread is actually on this site. The previous owners user ID is Turbo GT..... The only thing I'm worried about is its running on Megasquirt that I'm completely foreign to.....
Last edited by brandon19761; 03-01-2012, 02:46 PM.'87 Fiero GT-Turbo 3400Comment
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It made 230hp and 250 lbft with only 5psi. It is now pushing 10psi with ls6 valve springs. It blew out a couple of exhaust turbo flange seals on the 3hr drive home so as soon as I get her back together we'll see how it runs. I'm pulling the cat and putting in a vibrant resonator to aid with flow as well, so it should run better... We'll see..... Thanks.
Originally posted by neophile_17 View Post'87 Fiero GT-Turbo 3400Comment
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some specs:
The engine swap was performed back in 2006 (car had 132K on the clock) and has been a very reliable and fun project. The car was my daily driver up until around fall of 2008 when my clutch disk started to come apart and I didn't have time to fix it (don't buy a Spec clutch... see the photo album for pics of the broken part). Since then it has been my project car and doesn't see much street time but I wouldn't be afraid to drive it long distance. I have since upgraded the clutch to a ClutchNet carbon disk and the drivablitiy and clutch feel have been improved 100%. The swap utilized the Fiero timing cover, water pump, alternator, and AC which has been converted to 134a and blows nice and cold.
So here's the deal. I was preparing to take the car to the dyno last fall but ran out of time to get there. I would like the new owner to come to the Dyno tune so that they can get their feet wet with the MegaSquirt system and see how things work. The car will include an IBM thinkpad laptop setup to run with the MS system. My goal when starting the project was 300+ wheel HP on the stock engine, which I think is very realistic (I have seen several turbo 3400 Z24 Cavilers hit 350+ wheel HP on stock motors, a few of them are running the MS system also). Back when the engine was very first installed (without the ls6 valve springs it would fall on its face ~4800 rpm) and not running the best I went to a dyno day with some Nissan guys and was able to put down 230 hp and 254 ft-lb of torque with 5 psi. The engine is now running 10x better and is set at 10 psi, so this thing really scoots along. It is kinda scary with the stock brakes because the engine overpowers them so badly but I have recently bought adapters to install the 11.25" Lebaron breaks but haven't had time to get the rest of the parts and install them. If the vehicle doesn't sell with in the next few months I will go to the dyno by myself and post the results up here.
Vehicle shape:
The body is in decent condition but it has some beauty marks here and there but I never planned on it being a show car (more go than show). The most noticeable scuff on the paint is on the right rear corner of the bumper. I hydroplaned the car on the freeway and did a full 360 and just barely touch a concrete divider as the car came to a stop (I stayed on the pavement the hole time.... was really lucky here). You can kinda see it in the first pic, but I will add a better one when I get a chance.
Recently the speedo has decided to not work and I haven't had a chance to look at it
The tires are getting low on tread but was planning on getting rims and tires when I did the break upgrade (I will try and measure them if I get a chance, rears are better than the fronts) you could easily drive on them for a few months
The drivers seat has normal wear and tear and currently has sun faded seat covers on (I was planning on replacing the covers soon)
Interior is clean and the dash doesn't have any cracks and comes with Fiero store floor mats (has "Fiero GT" on them)
Radio is an Alpine and includes the AUX in cable so you can hook up your MP3 player or phone (CD player also reads MP3 disks)
The black switch next to the HVAC controls turns the AC compressor on and off (could remove this and have the MS system control this like the stock computer did.... i.e. turn AC off when throttle is > XX%)
Since the engine swap I have changed the oil 3 times with Mobile 1 synthetic 10w-30 (no oil leaks)
The suspension was upgraded before the engine swap and is definitely stiff. I cut 1 coil off the front and was planning on buying some front drop springs to help soften it up.
Upgrades to the Vehicle:
Rodney Dickman's dog bone & short shifter
Darrell Morse solid aluminum cradle mounts
350 lb/in coil-over springs in the rear
Monroe Sensa Trac rear struts
Gabriel front shocks
Stainless steel 11.25" Lebaron brake adapters (not installed yet)
Syncromesh tranny fluid recently changed in the last 100 miles
New heater core (changed several years ago)
New Radiator (changed several years ago)
Head lights have been converted over to use 9003 bulbs (has silver stars in there now)
New battery last fall
2002 Pontiac Grand AM 3400 (had ~40-45k on the clock when removed)
swap thread
Custom milled upper intake manifold
Rebuilt Mitsubishi TD06 turbo from GMC Typhoon (water cooled and rebuilt before engine install)
Stainless heat shields over turbo and below intercooler
Garrett water to air intercooler from GMC Typhoon
Johnson heavy duty Intercooler pump
Front mount heat exchange from GMC Typhoon
33 lb/hr injectors from GMC Typhoon
255 ltr/hr Walbro fuel pump
MSD wires
3" stainless mandrel bent exhaust off the turbo
High flow 3" catalytic converter
3" stainless intake
GFB Blow off Valve (kinda loud)
Intake and Exhaust heat wrapped
LS6/LS2 valve springs
http://www.realfierotech.co...topic.php?f=3&t=4408
Tial 34mm external waste gate
Waste gate dumps on left side stock exit and turbo dumps on right side stock exit with Fiero exhaust tips
Spec stage III pressure plate
clutchnet fiber carbon clutch disk (only has a few hundred miles on it)
New Timken throw-out bearing
Megasquirt II V3.0 pcb running MSII-extra code (laptop included, inverted behind pass seat to keep it powered)
-Closed loop idle control with stock 3400 IAC
-Electronic timing control with GM DIS system (with knock sensor)
-Electronic boost control
-Electronic cooling fan control
-Launch control (currently setup to launch with 4-5 psi).... this car rips out of the hole
-Flat shift settings are being setup, but will be finished before sale
Knocksense knock sensor
Innovative LC-1 wide band O2 sensor
I am sure I forgot stuff...
If you would like any additional pictures please let me know. The car is located in SLC, Utah so if you can swing by and look at it I would be happy to show it to you.Photo Gallery: (Click any image to view the gallery)'87 Fiero GT-Turbo 3400Comment
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Nice.
Always interesting to see how others did the 3400/Fiero conversion. I've heard a lot of good things about MS. Hopefully you're already tuned up and won't need to mess with it though. Did it ever make it to the Dyno a second time?
~samComment
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No. He was going to try to go do another dyno tune, but since I live out of state it would be hard to do. Seems pretty well tuned now though. Once I get familiar with MS I should be able to adjust it if necessary. The only thing I worry about is if the ecu fails then what do I do. Since he built the ecu himself I'll be clueless at that point...'87 Fiero GT-Turbo 3400Comment
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They're available pre-built from a couple different outfits. I dealt with these guys awhile back and was pretty happy:
Not as cheap as a junkyard ECM but not as expensive as other aftermarket ECUs.
~samComment
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Ok. Good to know. So worst case scenerio if the ecu crapped out. I could give them the schematic and they can build me a new one then downline the tune to it.....? cool thanks.'87 Fiero GT-Turbo 3400Comment
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Unless he built some custom hardware or used an add-on board then they should be off-the-shelf. Even the add-on boards are pretty standard.
~samComment
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I'll have to look into that. I know there's at least an add on board for boost/launch control...'87 Fiero GT-Turbo 3400Comment
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I think the car would benefit from ditching the log manifolds, but all the headers I've found have a really long rear section that drops down past where the turbo is mounted so I would have to mod them to work. Right now the turbo is pretty much mounted right to the rear crossover.'87 Fiero GT-Turbo 3400Comment
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