
An EA82, a wallet, and a mission
- tim_81coupe
- General Member
- Posts: 1693
- Joined: Tue Oct 04, 2005 10:00 am
- Location: Perth
From memory the 5th injector plumbed in on that car is to help the car reach higher boost levels. I can't remember how it's activated, but I can tell you it's not a standard fitment.
Yes, higher compression means less boost. If it was a really tough built motor I'd say the high compression means same boost and higher octane fuel, but on an alloy EA block with 3 mains and heads that flow less than Swiss cheese thats not a good idea.
Oh, and yes I did just say that bit to annoy Jaffa... LOL. :P :P
Yes, higher compression means less boost. If it was a really tough built motor I'd say the high compression means same boost and higher octane fuel, but on an alloy EA block with 3 mains and heads that flow less than Swiss cheese thats not a good idea.

Oh, and yes I did just say that bit to annoy Jaffa... LOL. :P :P
82 MY Wagon, EJ20G
87 RX, EJ20G
89 Brumby, EA81
12 BRZ, FA20
87 RX, EJ20G
89 Brumby, EA81
12 BRZ, FA20
- stamp_licker
- General Member
- Posts: 1066
- Joined: Wed Oct 05, 2005 10:00 am
- Location: Kallangur.Bris North
the mpfi turbo heads and mpfi na heads are very similar.differences r turbo cams r different to na and the turbo heads have another gallery[ oil or water can't remember],but the n/a heads can have this gallery added just a drill and a tap.i have run a turbo motor on a na ecu and loom don't know about the other way round.
[SIGPIC][/SIGPIC]aka the_postie
Building a hardcore postie:D
Building a hardcore postie:D
had a bit of a chat with jaffa on the phone, from the sounds of it, turboing the NA engine is completely out of the question..
might be worth my looking around for an engine that is turbo'able as hes telling me there will be a lot more substantial power loss from the NA engine than i expected
arg i dunno! i'd be happy with the NA engine still as i'd rather have the car running with an engine i know i can trust than not running at all.. but if i could source a decent EA82T for a cheapish price then it would probably be worth it.
If i still go the NA EA82 route, what else might i need to get it all up and running? new exhaust manifold, or would andrews engine come with it? and would it bolt up to a 2.5" exhaust..
so many questions, so little idea :P
i dunno, i just thing it would be possible to run an NA EA82 turbo'ed, even at 5psi the engine should be able to handle it without being degraded? or is it more than a matter of not being able to handle the boost... like the engine physically cant be coupled with the turbo and manifold?
might be worth my looking around for an engine that is turbo'able as hes telling me there will be a lot more substantial power loss from the NA engine than i expected

arg i dunno! i'd be happy with the NA engine still as i'd rather have the car running with an engine i know i can trust than not running at all.. but if i could source a decent EA82T for a cheapish price then it would probably be worth it.
If i still go the NA EA82 route, what else might i need to get it all up and running? new exhaust manifold, or would andrews engine come with it? and would it bolt up to a 2.5" exhaust..
so many questions, so little idea :P
i dunno, i just thing it would be possible to run an NA EA82 turbo'ed, even at 5psi the engine should be able to handle it without being degraded? or is it more than a matter of not being able to handle the boost... like the engine physically cant be coupled with the turbo and manifold?
The motor comes complete with the exhaust headers. Matter of fact you can have the entire exhaust as I'm replacing it anyway.
Would take an exhaust shop or somebody with a welder about 2 minutes to adapt the headers to your existing exhaust anyways.
Of course there will be a substantial loss in power for two reasons...
1 - it's lacking a turbo
2 - it's an EA82, they are all slow (even the turbo ones
)
You've basically got a few options for your car the cheapest of which is to bung this N/A motor in and save up for bigger and better things while still driving your car around.
If you take care of it you should be able to sell it for pretty much the same price when it comes back out again anyway.
PS sorry I missed your call today dude, I'll phone you tomorrow.
a.
Would take an exhaust shop or somebody with a welder about 2 minutes to adapt the headers to your existing exhaust anyways.
Of course there will be a substantial loss in power for two reasons...
1 - it's lacking a turbo
2 - it's an EA82, they are all slow (even the turbo ones

You've basically got a few options for your car the cheapest of which is to bung this N/A motor in and save up for bigger and better things while still driving your car around.
If you take care of it you should be able to sell it for pretty much the same price when it comes back out again anyway.
PS sorry I missed your call today dude, I'll phone you tomorrow.
a.
haha, to a guy who drives an untuned EA81 daily, a turbo EA82 is the fastest thing in the world :P but yeah i totally agree with what your saying, just hope i can save enough to get an EJ within the year or so!
if any people who are keen on helping out for a day want to arrange a date that would suit everyone to slap this in then we can get the show on the road
ill have the car at my mates place to have work done, have a welder and a decent collection of tools on hand, not lack things like an engine hoist and manuals on the engine.. which i expect all of you have copious amounts of copies of anyway, hehe
if any people who are keen on helping out for a day want to arrange a date that would suit everyone to slap this in then we can get the show on the road

ill have the car at my mates place to have work done, have a welder and a decent collection of tools on hand, not lack things like an engine hoist and manuals on the engine.. which i expect all of you have copious amounts of copies of anyway, hehe
- tim_81coupe
- General Member
- Posts: 1693
- Joined: Tue Oct 04, 2005 10:00 am
- Location: Perth
How so? The compression isn't a big issue unless you want to run big boost. But as has been said before, running low boost won't be a problem.Woob wrote:had a bit of a chat with jaffa on the phone, from the sounds of it, turboing the NA engine is completely out of the question..
As far as I can tell the EA82 MPFI motor is turbo-able. Someone tell me I'm wrong and more importantly why so.Woob wrote:might be worth my looking around for an engine that is turbo'able as hes telling me there will be a lot more substantial power loss from the NA engine than i expected
Point conceded. The turbo motor would run a longer duration on the exhaust to help keep the turbo spinning. But being factory bits here I don't think it would be a hugely noticeable difference and any lag as a result *should* be countered by the higher compression. As for the oil drain, that is a minor consideration. If the worst comes to the worst you could always weld a bung in on the sump. Dodgy yes, but it would work.the_postie wrote:the mpfi turbo heads and mpfi na heads are very similar.differences r turbo cams r different to na and the turbo heads have another gallery[ oil or water can't remember],but the n/a heads can have this gallery added just a drill and a tap.i have run a turbo motor on a na ecu and loom don't know about the other way round.
Tonight I've been lucky enough to have the opportunity to take a bit of a look at an MPFI EA82. It was dark though but as far as I could tell it had the same twin inlet single exhaust port setup on the heads as the turbo motor.
But at the end of the day I leave it open to someone in the know to shoot me down here. My experience with EA82's is limited to say the best, I've toyed with my carby one heaps and thats about it.
82 MY Wagon, EJ20G
87 RX, EJ20G
89 Brumby, EA81
12 BRZ, FA20
87 RX, EJ20G
89 Brumby, EA81
12 BRZ, FA20
damn just took another big chunk out of my wallet
$250 spent on the following..
set of Bosch Super Sports spark leads
Bosch Super4 spark plugs
Bosch rotor
Bosch dizzy cap
Castrol 5L 5W30 Syntheric R oil
Castrol 5l Radi Cool coolant
Castrol 4L Multitrax manual transmission oil
all that and i still havent got the gaskets yet
aah well itll be worth it when im driving the rx again
on another note, ive been talking to bloke from UltimateSubaru.net and they seem very confident that ill be right to turbo the engine, apparently a pile of people on there have used an MPFI EA82 and turboed it, just need to swap the turbo heads over, and it can handle up to about 10psi apparently.
all of the stuff i just purchased for the engine is suited for the turbo model in anticipation of turboing it, but i can swap it on the day if need be.

set of Bosch Super Sports spark leads
Bosch Super4 spark plugs
Bosch rotor
Bosch dizzy cap
Castrol 5L 5W30 Syntheric R oil
Castrol 5l Radi Cool coolant
Castrol 4L Multitrax manual transmission oil
all that and i still havent got the gaskets yet

aah well itll be worth it when im driving the rx again

on another note, ive been talking to bloke from UltimateSubaru.net and they seem very confident that ill be right to turbo the engine, apparently a pile of people on there have used an MPFI EA82 and turboed it, just need to swap the turbo heads over, and it can handle up to about 10psi apparently.
all of the stuff i just purchased for the engine is suited for the turbo model in anticipation of turboing it, but i can swap it on the day if need be.
No you can turbo any engine... even a motorbike or lawn mower its just a matter of do YOU want to bugger around with turboing an EA82 when you can just get an EA82T - hey if the heads will swap and you wana bolt a turbo to it then thats fine with me. Just wanted you to have access to all the info possible so that you could make an informed decision, and that decision is all your my friend. As i said if you guna EJ it next year then NA could be a cheep alternative to get you back on the road.Woob wrote:had a bit of a chat with jaffa on the phone, from the sounds of it, turboing the NA engine is completely out of the question..
Oh and when she is up and running (or i am in the area) i love a look.
yea i know what you mean, but i figure that the cost to turbo the EA82 will be a few gaskets, and a bit more time, but other than that itll be all sweet i hope..
also.. one major thing that im after atm is L series seatbelts.. dont really want to spend $430 buying them from Subaru new, so if anyone has some in good condition sitting around, or knows anyone wrecking an L series sedan or anything let me know because i'd love to get my hands on them
also.. one major thing that im after atm is L series seatbelts.. dont really want to spend $430 buying them from Subaru new, so if anyone has some in good condition sitting around, or knows anyone wrecking an L series sedan or anything let me know because i'd love to get my hands on them

- stamp_licker
- General Member
- Posts: 1066
- Joined: Wed Oct 05, 2005 10:00 am
- Location: Kallangur.Bris North
Vidler may have some seat belts... i will ask him if i remember.
Dave
Dave
EJ conversion wiring harness cut downs available. Please PM or email ([email protected]) for details.
Re: gaskets
VRS kit? seatbelts or something? :PAllanMajor wrote:go to supercheap and quote this part number, its for a vrs kit for an 82t.
# IS DN561. cost me 190 inc shipping, and 2 days wait.
cheers AL
- tim_81coupe
- General Member
- Posts: 1693
- Joined: Tue Oct 04, 2005 10:00 am
- Location: Perth
awesome, makes things a bit easier.. as long as the belt isnt burred at all they will be fine.. even if the edge is getting fluffy the pits will have a cry <_<AndrewT wrote:I've got a complete set of L series seat belts from my old car (recently chopped in half). They are far from as-new condition but should be pits passable. You are welcome to them.
a.
as for the VRS kit, ill go order it tomorrow.. other than head gaskets what will it contain? getting a pack of fresh head gaskets with the motor so i dont particularly need them
- Chris_Rogers
- General Member
- Posts: 1155
- Joined: Sat Dec 31, 2005 10:00 am
- Location: Brisbane
- Contact:
[quote="woob"]
yea i know what you mean, but i figure that the cost to turbo the EA82 will be a few gaskets, and a bit more time, but other than that itll be all sweet i hope..
[ /quote]
when you pull the 82t down check the heads. they have a NASTY habit of cracking into the valve seats. some may be visible. on my old one the pass side head gasket was buggered. watch the waterpump on it as well. there are two for that motor and one in 5-6mm shorter in height. for the 82t you need the taller one.
as for making the NA engine turbo- leave it NA and drive it. you'll hate it cause its slow but it will be VERY relaible. fix up the 82t of drop a EJ20R into it
just a few words of wisdom from a past RX owner that has had those problems.
yea i know what you mean, but i figure that the cost to turbo the EA82 will be a few gaskets, and a bit more time, but other than that itll be all sweet i hope..
[ /quote]
when you pull the 82t down check the heads. they have a NASTY habit of cracking into the valve seats. some may be visible. on my old one the pass side head gasket was buggered. watch the waterpump on it as well. there are two for that motor and one in 5-6mm shorter in height. for the 82t you need the taller one.
as for making the NA engine turbo- leave it NA and drive it. you'll hate it cause its slow but it will be VERY relaible. fix up the 82t of drop a EJ20R into it

just a few words of wisdom from a past RX owner that has had those problems.