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Old 10-28-2004, 08:12 AM   #1
EA82TRally
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Default Would this be overkill?

I have a few questions concerning the 1988 GL-10 AWD(w/5spd) Turbo.

My first question is this: Would 3" exhaust be overkill for the EA82T, or should I go with 2-1/2" piping from the cat to the muffler? I am planning on getting a custom 2-1/2" downpipe made(factory downpipe is just too close to the cv axle for comfort) with possibly a divorced wastegate setup(or bellmouthed downpipe) and a highflow cat.

My second question is what are the flow rates of the stock fuel injectors(cc's?)? I want to run 17 or 18psi of boost(already have a Starion intercooler w/ upgraded piping; intercooler is in a top mount position). I already have plans to upgrade the fuel pump since it is an inline pump, and I know that SARD makes higher flow rate fuel injectors, kinda pricey, but they make them. I just want to know if they will provide enough fuel(with a higher flow fuel pump) to keep up with the boost level. Also, would it help to install an adjustable fuel pressure regulator?

My third question is would it be logical to upgrade my ignition with an MSD control box? I wish I could afford the Jacobs ignition setup , but all I'm looking at buying is the MSD Control box. I have already upgraded the coil with an Accel Super Coil, and am running NGK Iridium plugs.

I am sorry for asking so many questions, but this is my first turbo car and I want to do it right the first time.

If anyone has input on this, your opinion would be greatly appreciated.

Thank You all in advance.

Patrick
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Old 10-31-2004, 09:38 PM   #2
EA82TRally
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Well, not to be a smart@$$ or anything, but evidently, I'm on the right track since nobody has replied to my post. Eh! Oh Well!!! Thank You All for at least Looking!!!
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Old 11-01-2004, 02:50 AM   #3
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yeah im a noob to but i think it sounds like ure sorted. sard injectors are about 600cc? this should be heeps for ure 82. the 82's turbo isnt the strongest bit of gear i dont think. but yeah get a rrfpr cos its turbs. and 3 inch is big for the 82 but i dont think would cause problems. the ign is a good mod anyway msd makes good gear. so u have it pretty well sorted.
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Old 11-01-2004, 05:34 AM   #4
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Quote:
Originally Posted by EA82TRally
I have a few questions concerning the 1988 GL-10 AWD(w/5spd) Turbo.

My first question is this: Would 3" exhaust be overkill for the EA82T, or should I go with 2-1/2" piping from the cat to the muffler? I am planning on getting a custom 2-1/2" downpipe made(factory downpipe is just too close to the cv axle for comfort) with possibly a divorced wastegate setup(or bellmouthed downpipe) and a highflow cat.

My second question is what are the flow rates of the stock fuel injectors(cc's?)? I want to run 17 or 18psi of boost(already have a Starion intercooler w/ upgraded piping; intercooler is in a top mount position). I already have plans to upgrade the fuel pump since it is an inline pump, and I know that SARD makes higher flow rate fuel injectors, kinda pricey, but they make them. I just want to know if they will provide enough fuel(with a higher flow fuel pump) to keep up with the boost level. Also, would it help to install an adjustable fuel pressure regulator?

My third question is would it be logical to upgrade my ignition with an MSD control box? I wish I could afford the Jacobs ignition setup , but all I'm looking at buying is the MSD Control box. I have already upgraded the coil with an Accel Super Coil, and am running NGK Iridium plugs.

I am sorry for asking so many questions, but this is my first turbo car and I want to do it right the first time.

If anyone has input on this, your opinion would be greatly appreciated.

Thank You all in advance.

Patrick
Hey Pat,
sorry to rain on your parade bu there is ABSOLUTLEY NO WAY that the STD Injestors will handle the req's of 18Psi!!
I have done LOTS of work with EA82T's and Never found a fault with the IGn if A/Market ECU installed-lets not forget that the Dizzy just delivers the spark/Fuel and triggers both. One of the Main things I have come across with this motor is the fact you can get around 3/4 of a 'Tooth' of timing from the Flywheel when you are fitting it, (you can move the Flywheel on it's bolts THAT FAR before you tighten it!!). ALso, I have had ALOT of Succes playing around with the Valve Timing...I had one Guy with more money than sense running 12.0's in a Vortex, (EA82T). You said you wanted to do it right first time......GO EJ series and stop wasting Time/Money!!!

(Coming from a EA82T Fan from WAAAY BAck--I was fitting A/Con's to them new here!! and even I 'have seen the Light...' )


Cheers,

Sixpack Subaru
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Old 11-01-2004, 07:53 AM   #5
EA82TRally
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Well, my only problem, is I'm not ready to get a EJ engine. Not trying to be rude, but I like my EA82T just fine. Maybe I'll pick up an EJ motor when I go to Okinawa in March. The moving the flywheel thing is kinda scary. Don't think that I'll be messing with that any time soon. Besides, I had such a PITA time putting the new clutch in until it wasn't even funny anymore. I thought I was going to kill myself doing the swap. LOL. I don't want to have to do that again until I return from Okinawa, that's why I got an HD clutch for it.

Basically, I'm trying to extract a few ponies out of the good ol' EA82T. My goal is to achieve around 250hp at the wheels. Shoot, actually, if I can get over 200hp at the wheels, I'll probably stop messing with it. Maybe.

Last edited by EA82TRally; 11-01-2004 at 10:56 AM.
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Old 11-14-2004, 05:33 PM   #6
Kevin Thomas
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Quote:
Originally Posted by EA82TRally
I have a few questions concerning the 1988 GL-10 AWD(w/5spd) Turbo.

My first question is this: Would 3" exhaust be overkill for the EA82T, or should I go with 2-1/2" piping from the cat to the muffler? I am planning on getting a custom 2-1/2" downpipe made(factory downpipe is just too close to the cv axle for comfort) with possibly a divorced wastegate setup(or bellmouthed downpipe) and a highflow cat.Patrick
Hello Patrick,

I'm going to answer this not from experience but from opinion. I would say that 3" isn't overkill. Why? If you get a 2.5" exhaust and for some reason you do so many mods that exhaust flow could become an issue once again, you'd hit your exhaust flow limit further down the road with a 3" exhaust vs a 2.5" one. Other than that, I'd go with a 2.5".
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Old 11-19-2004, 12:49 AM   #7
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i'm running 2 1/2 on my ea82t and it works great. from what i have heard 2 1/2 to 3 is good size for these cars any bigger and it is just overkill.

my other comment is on the boost you want to run. your ecm will cut out your injectors if you sustain more than 9 psi boost for 10 seconds. i'm not sure if you knew that if you did ignore me
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Old 11-19-2004, 11:41 AM   #8
EA82TRally
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Good. That settles it. I am getting 2-1/2" pipe.

And about the injectors and ecm, I didn't know that at all. Thank you for the info. It is just going to suck because that is going to "cut my legs out from under me," if you will. Well, guess I'll be looking for a FCD now.
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Old 11-19-2004, 11:49 AM   #9
EA82TRally
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Unless you guys know another way around it? If so, PLEASE, PLEASE let me know.
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Old 11-19-2004, 10:43 PM   #10
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look into megasquirt
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Old 11-20-2004, 03:31 PM   #11
EA82TRally
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I checked their site out. Looks like it would be a good investment. Thank You.
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Old 11-22-2004, 12:03 PM   #12
EA82TRally
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Well, it also looks like I'll be looking into purchasing a recirculating BOV. I went and retrieved(Finally, after 4-5 months) issues of Super Street[SS] & Sport Compact Car[SCC] from my neighbor who evidently thought I gave them to him(YEAH RIGHT!!!). Anyway, I was reading an article in the JUNE '03 issue of SCC(entitled,TurboTech:Compressor Bypass Blow-out;pg.230) that was discussing different types of BPV's and BOV's and what exactly they do. I read a section that said that BPV's that are plumbed back in front of the turbo inlet, would help "increase pumping efficiency, as the compressor doesn't need to draw additional air through the filter. This keeps compressor speed up, further reducing lag." I thought that statement was rather interesting and am now taking it to heart.

As for Megasquirt, I think it might be a while before I buy one. I need to look into this a little more. The tuning part about it was a bit confusing. Are there any tuners that can tune the Megasquirt?
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Old 11-25-2004, 01:17 AM   #13
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Quote:
Originally Posted by EA82TRally
As for Megasquirt, I think it might be a while before I buy one. I need to look into this a little more. The tuning part about it was a bit confusing. Are there any tuners that can tune the Megasquirt?
As far as I know, NOPE!
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Old 11-26-2004, 07:59 PM   #14
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there are no real tuners for MS (megasquirt) it's not a brand or a company owned product. it's a freesource project. you do it on your own, from the advice and knowledge of all things fuel/spark related.

anyhow - the EA82T can get decent power levels (just as ANY motor can get decent power levels), but it's alot of ca$h. ALOT of ca$h. and you'd be easier getting an n/a EJ22 or EJ25 and swapping it in with an EJ trans adaptor or modifying the whole car for the EJ powertrain. stock EJ22 130,135,142hp depending on model, 162,165hp EJ25 depending on model... stock EA82T at 115hp. 180cc/min injectors, a small turbo... 7.7:1 CR... 6.5/7psi econo cams stock. the block is closed deck, so it's good for alot of boost. but - it's very limited in everything. head design, intake manifold design, exhaust design, ect.

I've rebuilt a couple EA82T cars, I know how they work, if you're seriously interested in getting power from that motor and not swapping... I need to intoduce you to USMB's current Ea82T brainiac and insane subie owner, WJM. (will)
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Old 11-28-2004, 06:46 PM   #15
EA82TRally
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Well, I really am intersted in building up my EA82T. I don't want to swap in another motor or drivetrain unless I start not enjoying this motor. Right now it is getting the job done. I have plans to get hold of some bigger injectors(SARD 560cc's I think) to help out with fuel distribution duties. I am also trying to seek out a shop that can bore my throttlebody slightly. Also in the works are a full 2-1/2" exhaust w/ bellmouth downpipe. Basically, I'm in the hunt for about 200-250hp. So I will probably not stop modding until I get to where I want to be.
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Old 11-28-2004, 10:30 PM   #16
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Quote:
Originally Posted by EA82TRally
Well, I really am intersted in building up my EA82T. I don't want to swap in another motor or drivetrain unless I start not enjoying this motor. Right now it is getting the job done. I have plans to get hold of some bigger injectors(SARD 560cc's I think) to help out with fuel distribution duties. I am also trying to seek out a shop that can bore my throttlebody slightly. Also in the works are a full 2-1/2" exhaust w/ bellmouth downpipe. Basically, I'm in the hunt for about 200-250hp. So I will probably not stop modding until I get to where I want to be.
DUDE. XT6 throttle body! TWE header and downpipe! Delta 677-260 cams! Megasquirt and DIS engine management!
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Old 11-29-2004, 11:12 AM   #17
EA82TRally
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WJM, you have been PM'd. Thanks for all the suggestions and support.
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Old 11-30-2004, 08:43 AM   #18
EA82TRally
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Update: I got my new BOV/BPV(It can be used as either one) yesterday. Made out of Billet aluminum(Purple in color, no my personal favorite), and fully adjustable. It even came with a harder tensioned spring for running higher psi levels. I have to personally Thank Mike Kent(@ Sport Compact Car) for the article he wrote that opened my eyes about BOV's and BPV's, and also the gentleman on eBaymotors by the screen name of "Allenmoney," for selling me a big pimpin' Bypass valve($67.95 incl. shipping). If anyone wants one or needs one, buy one of these. You won't be disappointed! Well, maybe with the color if you don't like purple, but certainly not the performance & quality!
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Old 11-30-2004, 10:08 AM   #19
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Ive got a gen 1 DSM BOV on my RX...rigged up for 100% recirc right now. When I do the WRX TMIC install, I will use the stock WRX BOV rigged up for 100% recirc.
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Old 11-30-2004, 10:52 AM   #20
EA82TRally
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Mine will be set up to 100% recirculation, hopefully by the end of today. It has a single 1" inlet/outlet like a BPV, but it was advertised as an open atmoshpere BOV. I decided to replace my Tcc Work open atmosphere BOV with this new one after I read that article in SCC. I purchased it because I plan on running more boost in the future and just wanted to invest in one that will be able to keep up.
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Old 12-02-2004, 07:29 AM   #21
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UPDATE: My car is now street legal and already taking over the Stratus's workload. The only drawback that I have found is that gosh darn fuel cut! Yeah, I experienced it for the first time last night, and I can tell you now, I Don't Like It!!! Then, there is a weird vibration when I get to about 35mph. But it only does it sporadicly. Other than that, I scared a guy in a Mustang last night when I started squalling tires in first gear(@ approx. 3600 rpm's when boost kicked in real good). I just kept it in first longer than normal, as I usually shift right at or before 3K. And I didn't realize how fast the turbo spools up either. It was going into boost between 2700-2800 rpm's, so I don't know if there is something wrong or if it is supposed to do that. Everything else feels pretty strong, so I guess I just have a few bugs to work out. Eh, oh well.
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Old 12-02-2004, 10:48 AM   #22
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everything sounds right to me!

power band on these things is 3k to 6k. Turbo should be at full boost normally aroudn 2500~2800....starts to spool around 1600. Under load in hihger gear, full boost cna be achieved at 2000.
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Old 12-03-2004, 07:36 AM   #23
EA82TRally
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SWEET! SO I don't have anything to worry about.

I found that with this particular turbo, it is very difficult to not go into boost. The turbo spools up so fast that even just cruising in 5th down the highway, with the slightest throttle variation will result in boost. I took a friend of mine for a spin in the GL-10 yesterday and he was very impressed(and it was only running 8psi[stock boost]). He said if he hadn't just bought a 95 Dodge Dakota, he would seriously have considered getting a turboed Subaru. That made me even more proud of this awesome little car.

Oh and I figured out that my car only gets fuel cut when boost goes above 12psi. I had it at 11psi last night(with little gas pedal adjustment with my foot) and it ran perfect. I think I read that somewhere in a different forum on here(NASIOC). I think it was the write up about fuel injectors and fuel supply. But I plan to build myself an FCD with the instructions that I found online. I already have an adjustable FPR that I need to install so that I can turn up the fuel pressure a little bit.

Last edited by EA82TRally; 12-03-2004 at 07:41 AM.
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Old 12-06-2004, 12:58 PM   #24
EA82TRally
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UPDATE: Maybe I should rename my post the update post! LOL Anyway, I had my first big problem with the Sube. This past Friday, the lower coolant hose that goes into the turbo decided it was time to give up the ghost. It sucked because in order to replace the hose, I had to remove the turbocharger. WHAT A DAY!!! It took me approximately 30 minutes to replace the hose and remount the turbo and all coordinating piping. I didn't realize how easy it was to take it off. Good times, I tell you.

I was also able to partially make it around the fuel cut issue. I re-routed the vacuum hoses that go to my boost controller and adjusted it accordingly. Now I am running 10psi and everything seems to be right on the money. The car runs like a bat outta you know where.
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Old 12-06-2004, 01:10 PM   #25
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Yeah, that hose is certinly a PITA. The TWE header moved the turbo up and back a little, so it makes getting to that hose much easier. That and its EXTREAMLY easy with a TD04 on there.
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