EA81 strip was so EAsy !

steptoe · Post by **steptoe** » Mon Apr 07, 2008 10:09 pm

Aargh stuff the procrastination and planning turbo Brumby. I ripped the covers off a spare EA81 sitting in the yard and stripped it down to find big valve heads look to be recent overhaul, so maybe just new valve stem seals for them. The pistons are originals and look to be cracked along gudgeon pin ( a scratch right across from side to side past the circlip grooves) so ordered meself a set of 40 thou oversize pistons. The block halves are off for checking for suitability for rebore. They look good. Mains look OK and the big ends ... what sort of socket did Fuji use here?? I don't remember the close clearances between nut and con rod from past rebuild and dismantle ???- hard to find a socket to fit to undo. I'll need to sort out to torque things back up.
Gonna just do a nice clean rebuild with ideas about bigger intake manifolding for LPG later, but then again a mate does like stuffing a die grinder down head ports

and might just look at turbo stuff off EA82 and onto this so simple engine SO MANY BITS AN EA82 has that these don't !!! feed turbo off oil pressure switch, uh oh, watch out !!

The pistons are listed same for 81 and 82. Also had turbo pistons in stock. Supplier mentioned Porsche pistons for turbo applications in some Subie engines (raised eyebrows)

Speedisleeve for crank seal surfaces

And beauty, it has solid lifters. and no rockers so back into the garden shed to look.....or SUB4.co.nz ?

Matatak · Post by **Matatak** » Tue Apr 08, 2008 1:45 am

EA81 definitely should be a much simpler way to go.

the EA82T's just seem like a big hassle in my eyes to convert to, especially in a brumby lol

dont know about the socket though unless u have a quick pic to chuck up.
maybe its just a Multi-Hex socket? i know a few people who have been thrown off by seeing a head-bolt which needed a multi-hex and not a single-hex lol, and they to wondered where to get a socket to fit.

discopotato03 · Post by **discopotato03** » Tue Apr 08, 2008 8:54 am

Yes 6 point and 12 point bolt head and sockets . Often but not always 1/2" drive sockets are 12 point - the better quality ones anyway .

Yes push rod vs OHC , there are valid reasons for doing this like for example loosing the pushrod holes in the head casting leaving room for better ports .
EA82 SOHC heads are a bit crude and I think Subaru didn't really want to develop betters ones because the EA engine family was at the end of its economic life .
There is no physical reason why EA82 heads couldn't have had their cams down in the top of the casting like EJ ones do and been a proper 4 port cross flow design . Obviously they weren't after serious power and its debatable if the 3 main bearing crank/engine cases could have withstood higher torque loadings reliably . To me its obvious that the SOHC 82 variant was done to extend the EA series a little longer .

The EJ is a much more modern design and if you have to put EFI in a previously Carby car then its probably little more work to graft an EJ in than an EA82 .

Also keep sight of costs because an early factory EJ powered car may be a better proposition even consumption wise than sinking lots of thousands into an old car .
Lastly keep an eye out for someone who may have slung an EJ into a Brumby because they do get sold occasionally so you may pick one up the fruit of some other poor buggers labours .

Life is always at a crossroads , cheers A .

steptoe · Post by **steptoe** » Wed Apr 09, 2008 12:32 pm

Lucky ? for me I have two Brumbys to think of. The 92 kindly lent its heart to my 84 daily LPG 5 speed. Plan was to use its empty void to fit up EA82T in prep for easy transfer across to my daily driver but....

A few spare EA81s around, rebore & hone , new .040" (or 1.0mm) oversize pistons , and fit little ends to pins , gaskets and seals , regrind cam & Parco Lubrite it (Watson Racing Cams in Burleigh Heads) reface lifters , rings and bearings, and water pump and maybe head job ...I should be able to rebuild one properly for less than an 'import' EA81 less freight.

<edit> famous last words !! The cranks main journals are at minimum clearance and considering regrind - 3 journals $210 !!
pulled another EA81 apart in record time with the rattle gun (forgetting cam retainer bolts before try splitting

)

And get this - the crank I had linished 180,000km ago was the best nick crank I have out of four dimantled, just a linish again and standard bearings, so forget the regrind

I still wanna turbo 82 a Brumby - also just developed an urge to do gas vapour injection on a spideyed EA82T with normal TPS adapted...before I go EJ

So... then I can move another vehicle by horsepower than manpower and know I have spare easy motor if the turbo upset me

Oh, and the con rod nuts - a 14mm socket with a flat ground on one side for the bottom 5mm or so did the trick. Never had this trouble before

steptoe · Post by **steptoe** » Wed Apr 16, 2008 10:53 pm

Argh ! *%$# ! SPIT !! The block can't be bored unless the head studs are removed . I get a call saying it is gonna co$t if they do it ( about TEN thread repairs etc) so I have a go at the stubborn ones with a prized tool, and SNAPPO. Luckily I hoarded some other blocks over time and ended up dredging up the 84's original block that the studs had already been removed, and another pair of blocks whose studs also came out , and my hydraulic tappet block, also studless.

getting there

YouTube · Post by **El_Freddo** » Thu Apr 17, 2008 12:17 pm

steptoe wrote:Argh ! *%$# ! SPIT !! The block can't be bored unless the head studs are removed . I get a call saying it is gonna co$t if they do it ( about TEN thread repairs etc) so I have a go at the stubborn ones with a prized tool, and SNAPPO. Luckily I hoarded some other blocks over time and ended up dredging up the 84's original block that the studs had already been removed, and another pair of blocks whose studs also came out , and my hydraulic tappet block, also studless.

getting there

This is one thing thats pissing me off about my EA82 - threads pulling out left right and centre. The other thing is the lifter tick. I'm seriously over this!

Good luck with the build. Pics! Pics! Pics! Although this is not the Herald Sun, We all enjoy a good photo or two of what your up to...

Cheers

Bennie

steptoe · Post by **steptoe** » Fri Apr 18, 2008 12:25 am

lifter tick - tried MBL concentrate from Pro-ma MLM distributor near you ?

YouTube · Post by **El_Freddo** » Fri Apr 18, 2008 9:13 am

steptoe wrote:lifter tick - tried MBL concentrate from Pro-ma MLM distributor near you ?

Okay, I have no idea what you just said - there's a product in there and a company that sells it??

I havn't seen a Pro-ma MLM distributor around, not that i've been looking...

Cheers

Bennie

steptoe · Post by **steptoe** » Sun Apr 20, 2008 10:55 am

Some 15 years ago a fella was giving us all these samples to try in the workshop. The brand was Pro ma , a sister company of Grace cosmetics and multi level marketed - like amway. The products we tried produced good result. The fuel treatment 500ml treats 625 litres $20, would clean poey injectors normally on a ten km test drive. Puncture seal goo could seal up a two inch nail stabbed into a pushy tyre (my brother still has this goo filled tube on a bike in storage). I recently found a flyer from a mechanic turned saleman who sells ' products that work' . He lists Proma MBL concentrate oil add as a product that 90% of the time has fixed noisy lifters tested. The other 10% were kanga'roo' theodored (ted)

The fuel treatments both petrol and Diesel were stocked by a local Toyota dealer on the parts shelves with a label of their own pasted on top of original. It is rare to see a dealer sell anything other than their own brands

steptoe · Post by **steptoe** » Sun Apr 20, 2008 11:00 am

Watch this space ! got the cams back, gotta pick up the blocks and crank and rods on Monday.

I was lucky with the cams. I used Aus Express post 3kg bag to send two cams to Brisbane overnight. Had I sent them the day before it would have ended in the ocean. Some poor fellow lost his life when his plane went down carrying express post article from sth nsw to Brisbane the night before.

Matt · Post by **Matt** » Mon Apr 21, 2008 9:25 pm

Where abouts are those prices for pistons and rings from genuine / Company? They for the whole set? As i have to do mine very soon....

steptoe · Post by **steptoe** » Tue Apr 22, 2008 9:34 pm

rings were extra plus freight each time i order. PM sent

steptoe · Post by **steptoe** » Mon May 12, 2008 11:09 pm