EA81vs EA82 built

spike · Post by **spike** » Wed Sep 08, 2010 9:42 pm

ok guys
ive talkeed about building a strong EA82 but others have said to build an EA81
wll i dont know much about EA81's and personally EA82s have more potential for power, OHC and such

well how about a pros and cons??
and what you can do for power and torque??

someguy · Post by **someguy** » Wed Sep 08, 2010 10:01 pm

Personally I quite like the 82 and have never had a problem with the EA82 in my L

I have had mine for 4 years now and has never missed a beat (very well look after though)

I would go for an EA82 with custom cams, webber carb, etc etc and should scream.

*patiently waits for all the EJ fanatics*

Gannon · Post by **Gannon** » Wed Sep 08, 2010 10:18 pm

There were a few hi spec EA81's that made more peak horsepower than the EA82.

They had higher compression ratios, twin carbys and better flowing heads with the intake and exhaust valves reversed.

I think that the jap spec ones on 100RON fuel made close to 100hp

GOD · Post by **GOD** » Wed Sep 08, 2010 10:22 pm

someguy wrote: etc etc

Ah yes, the good old etc method. The miracles implied by those three letters are what got me through maths at uni.

And Spike, I know this won't matter to you, but there are usually very good reasons behind conventional wisdom. We look forward to seeing your results though.

Dane.

spike · Post by **spike** » Wed Sep 08, 2010 10:31 pm

yeah btw lets keep the EJ argument out of this please
this is for me on my Ps an EJ conversion would be illegal.

see over head cams are what gets me.
i really imagine an EA82 running modified duel carbs, ported heads, cams, or running MPFi cause theres a lot of mods you can use them for.
EA81s might have better heads, and duel carbs and higher compression but they are just a modification on the EA81 an even older design they wouldnt be econimical.

D3V1L · Post by **D3V1L** » Wed Sep 08, 2010 10:36 pm

ive driven a hotted up ea81, and it was mint, driven a hotted up ea82, and it didnt feel any different from any other one.

davo

AndrewT · Post by **AndrewT** » Wed Sep 08, 2010 10:40 pm

A custom hotted up EA will be slightly less disappointing in performance than a stock one, but more unreliable and obviously more expensive to get happening. Save your money until you are off your P's then put a real engine in. Subaru engines got good AFTER the EA was finished

But if you have to do an EA then best of luck to you, I would do an EA81 but for no particular reason.

steptoe · Post by **steptoe** » Thu Sep 09, 2010 5:17 am

one design advantage I say 81 has is no timing belt, tensioners, cam box seals, cam box grove cleaning, no hydraulic lifters (if you have EA81 with hydraulic lifters good luck finding new) so using solids is a performance factor. Less reciprocating bits to go wrong but getting harder to find blocks that you can still remove head studs for boring as they get in the way. If you go EA82 try mpfi heads and cast your own inlet manifolds above the twin ports with a water bypass outlet on each side, toy camry or remote thermostat housing. I used to hate EA82 but come to appreciate them for what they are - mid 80's design and long livers (so they can drink more

)

Gannon · Post by **Gannon** » Thu Sep 09, 2010 6:14 am

On the MPFI idea, there is no reason why you couldnt use the MPFI intake manifold and replace the throttle body with an adapter plate and a carby, then you will benefit from the better breathing heads, and the slightly hotter cams.

The MPFI had 94hp from factory on 89 fuel, on 9.5:1 compression, if you wound the timing forward a bit to take advantage of 98 fuel, 100hp shouldn't be out of the question

rubisubi · Post by **rubisubi** » Thu Sep 09, 2010 9:23 am

EA81/82 and power is like using the words Paris Hilton and virgin in one sentence. The 2 just dont go together. Although i have a stock 81 brumby and my mate has a stock 82 L series, both of us agree that the 81 goes far better for whatever reason. My 2 cents worth.

RSR 555 · Post by **RSR 555** » Thu Sep 09, 2010 9:33 am

Just a thought.. Would a EJ18 affect your P's?

I would use a EFI EA81 engine and make it sick with a wild cam, solid lifters, high compression, 110RON fuel and a Microtech EMS

spike · Post by **spike** » Thu Sep 09, 2010 9:34 am

mmmm
ok im so far a fan of the EA82 just newer and what not, and its all ive had.

but ill have to have a serious think about the EA81.

and engine is just an air pump. so the aim is to get the most air in and out, EA82 with MPFi heads, ported and polished and two large carbies sitting directly on top of them, modified water passages, water spray.

to me none of this really seems hard or expensive.

spike · Post by **spike** » Thu Sep 09, 2010 9:35 am

[quote="RSR 555"]Just a thought.. Would a EJ18 affect your P's?[quote]

im not sure.
i'll buzz an email off to the regency and see if they want to tell me

RSR 555 · Post by **RSR 555** » Thu Sep 09, 2010 9:40 am

spike wrote:mmmm
ok im so far a fan of the EA82 just newer and what not, and its all ive had.

but ill have to have a serious think about the EA81.

and engine is just an air pump. so the aim is to get the most air in and out, EA82 with MPFi heads, ported and polished and two large carbies sitting directly on top of them, modified water passages, water spray.

to me none of this really seems hard or expensive.

I wouldn't port an EA82 as they are weak enough in standard form.. but they have been done.

spike · Post by **spike** » Thu Sep 09, 2010 9:47 am

yeah ive ported out my dead single port, even they can go a fair way if your prepared to put in the work. i havent tried it but im sure its still safe and wont collapse

steptoe · Post by **steptoe** » Thu Sep 09, 2010 1:25 pm

When I finally get time to finish my carb block EA82 with efi heads and see if it fits my Brumby using its LPG fuel and turbo cams I'll be able to tell you how it goes compared to current twin carb EA81 with 450,000km on it

sven '2' · Post by **sven '2'** » Thu Sep 09, 2010 9:34 pm

im not sure.
i'll buzz an email off to the regency and see if they want to tell me

Regency will say no

In SA, the basic rule is that the engine can only upgraded to a variant that was a factory option in AU. Couple of exceptions - V8 into a HR

For example

EA82T into a L - no problems
13B in a VW - no chance

Sven

spike · Post by **spike** » Thu Sep 09, 2010 11:03 pm

and regency said no...............

however they were pretty good about it, basically i can have the EJ18 (if i could find one and afford it) but it needs to have all the eco gear, as well as the car being set up to stop better adn some crap

so basically i need to put full disk brakes on and limit the engine so it produces less hp that the EA82

steptoe · Post by **steptoe** » Fri Sep 10, 2010 9:02 am

Might as well find one of those cheap EJ22 Liberties - saw one tied down as in crunched down on a scrap metal truck the other day - HEYY, STOP !

spike · Post by **spike** » Fri Sep 10, 2010 9:21 am

yeah im looking for one now.
pretty sure i have it but still i cant just say hey you here 900 for your car.
cause basically i dont have 900 but i have a lot of parts here to play with.
maybe i need to have a sale again
and hope somone buys somthing hahah