Doug's EA81 Rebuild stuff.

Subydoug · Post by **Subydoug** » Wed Oct 30, 2013 11:23 pm

Hey tweety,

Yeah today I welded in an outlet on my old oil cap,

Only around 3/8th inch outlet, and yes it isnt perfectly centered

Put the little filter on it for the time being but Its friggn loud like that. I’ve gone to 5/8 pipe from the rocker covers and from the catch can to PCV. I altered my catch can so now it has a pipe going down to the bottom. Now the fumes have to come up to the top via steel wool. First signs look good as the PCV valve isnt wet with oil any more. Crank case is still pressurising though. Im going to hook my pressure gauge to the outlet on the oil cap and watch it while I drive (could end bad

).
Anyway, Il get it best I can and maybe next weekend Il pull it out and actually fix the problem.

Regards

Doug

steptoe · Post by **steptoe** » Thu Oct 31, 2013 6:40 am

on the cap is a good idea ! I started to butcher a fill tube to add a fitting to take 5/8" hose and ended up just cutting the factory breather hose on LHS of my EA82, whack in a T piece for same style breather. I had some oil seap out the back - suspect new oil seal, thought it may have been crankcase pressure - seems to be fixed. Those breathers really need to be channeled to the rear of the car to share the fumes

Subydoug · Post by **Subydoug** » Thu Oct 31, 2013 11:28 am

A T piece on the rocker cover is a good Idea. Pretty sure now that my crank case isnt pressurising anymore with the extra breather. If I stick a plastic bag over it and rev the motor, I can see it suck in the plastic as the PCV works, but then it blows out like a blow fish afterwoods

. Il leave it for a bit If I can handle the noise it makes.

Regards

Doug

Post by **TOONGA** » Thu Oct 31, 2013 7:51 pm

Doug the diagram below shows the way PCV gases should be routed in the EA81

I would think a breather on the top of the oil filler (while a cracking idea) might not be the best solution.

I have a question, with the engine running at idle is there an audible gurgling noise from the oil filler when the cap is removed?

If so your PCV piping could be routed the wrong way.

TOONGA

Silverbullet · Post by **Silverbullet** » Thu Oct 31, 2013 8:30 pm

According to that diagram the carbon canister purge line should go to PCV line? Hmmm, only my ute has had the canister and the purge line goes straight into a vacuum port on the manifold. Don't suppose it makes much difference. All this talk of catch cans is swaying me towards getting one, my PCV is always wet with oil and even leaks a bit on top of engine sometimes. Could be why if I let it warm up on a cold morning too long it starts billowing thick white oil smoke

Disappears the second I drive away.

RSR 555 · Post by **RSR 555** » Thu Oct 31, 2013 8:49 pm

The carbon cannister should not be connected to your PCV. It's only using the vacuum and purge from the manifold. The carbon cannister is there for fuel gasses only and should not have any crank pressure fumes go into it.

Post by **TOONGA** » Thu Oct 31, 2013 9:13 pm

Don't shoot the messenger I didn't make that picture up.

All I was showing Doug was the way the PCV piping should be as for the purge line it would normally be at a vacuum point.

TOONGA

RSR 555 · Post by **RSR 555** » Thu Oct 31, 2013 9:17 pm

Not having a dig at you Jules.. just stating that it shouldn't have oil fumes in it. The positive crank pressure should go straight to the PCV and air filter thing-a-bob holder, plus both rocker covers should go there too.

Silverbullet · Post by **Silverbullet** » Thu Oct 31, 2013 9:18 pm

Sorry I brought it up

RSR 555 · Post by **RSR 555** » Thu Oct 31, 2013 9:19 pm

TOONGA wrote:Don't shoot the messenger I didn't make that picture up.

All I was showing Doug was the way the PCV piping should be as for the purge line it would normally be at a vacuum point.

TOONGA

And really should look at that picture as there is no crank breather pipe.. this is the one that goes to the PCV

Post by **TOONGA** » Thu Oct 31, 2013 9:29 pm

RSR 555 wrote:And really should look at that picture as there is no crank breather pipe.. this is the one that goes to the PCV

If you really want put it in, I don't remember EA motors having a crank breather pipe only the pipes from the rocker covers.

I have looked at every picture of EA81 motor I have and about a billion on google can't see this breather that comes off the crank case you talk of. sure you are not confusing the EJ one with the EA?

TOONGA

RSR 555 · Post by **RSR 555** » Thu Oct 31, 2013 9:43 pm

TOONGA wrote:If you really want put it in, I don't remember EA motors having a crank breather pipe only the pipes from the rocker covers.

I have looked at every picture of EA81 motor I have and about a billion on google can't see this breather that comes off the crank case you talk of. sure you are not confusing the EJ one with the EA?

TOONGA

Oh yes, you are correct, I'm thinking EJ. The EA only has the rocker cover breathers and the LH goes to the Tee piece that goes to the PCV and the air cleaner cover.

Subydoug · Post by **Subydoug** » Thu Oct 31, 2013 11:28 pm

Yeah only the two breathers, one on each cover for the ea81. Jules I had it plumbed up stock, with a single pipe to the airbox from the drivers side rocker cover. The other side went to a plastic 3 way and one large line went to the PCV, the other smaller one to the airbox, with its own little filter element. Now All I have is pretty much the same, but the Catch can is between the pcv and the rocker cover. I did originally put the little filter onto the catch can out of a third outlet, but pulled it off because it didnt seem to make sense to me. Plan was to run that extra line out of the oil filler to the PCV, then just put small filters on both rocker covers. I was also thinking of pissing off the PCV and going with a fixed vac leak that constantly draws into the manifold.

I dont have a charcoal canister.

Regards

Doug

RSR 555 · Post by **RSR 555** » Mon Nov 04, 2013 9:18 pm

With the amount of oil over the front of my car, I'm going to say the oil rings are stuffed

Subydoug · Post by **Subydoug** » Mon Nov 04, 2013 11:53 pm

Yeah mate, I was thinking a lot about it. Starting to think my hunch was right about cyl 2. When I got back yesterday Im pretty sure I was only running on 3 cyl. Started alright thismorning and ran normal.....My thoughts are that maybe I damaged one or both of the scraper rings when putting them in....maybe. Started pulling the engine apart after work and will have it out in a few days I hope. If there is anything unusual Il throw some pics up.

Regards

Doug

YouTube · Post by **El_Freddo** » Tue Nov 05, 2013 4:25 pm

Subydoug wrote:My thoughts are that maybe I damaged one or both of the scraper rings when putting them in....maybe. Started pulling the engine apart after work and will have it out in a few days I hope.

That sucks mate - especially after all the work that went into it in the first place! Hope it's easily sorted after this operation

Cheers

Bennie

Subydoug · Post by **Subydoug** » Tue Nov 05, 2013 5:52 pm

Arh its Ok. I think that I damaged the scrapers when putting them in. I cant imagine that the bore had too many sharp ridges inside it as it wasn't bored out and even so I honed it. I remember one piston felt a little tighter then the rest when I pushed it in. Not tight enough to ring bells but distinctly tighter... and I certainly don't remember which pot, but just maybe... Its a good excuse to pull the box out too and fix my reverse issue.

Speaking of which, Paul or other 4spd D/R guru's in the house, if I were to have the box out, is it pretty easy to get inside of it and make sure everything is OK?

Regards

Doug

YouTube · Post by **El_Freddo** » Tue Nov 05, 2013 6:16 pm

Subydoug wrote:if I were to have the box out, is it pretty easy to get inside of it and make sure everything is OK?

From what I've read, it's harder than an EA82 5 speed box. Keep your eyes peeled for dedent balls and springs to go everywhere as you pull it down!

Best of luck.

Drop a 5 speed in - probably easier to do!

Cheers

Bennie

Subydoug · Post by **Subydoug** » Tue Nov 05, 2013 6:22 pm

Yeah a 5 spd was what I was thinking as the best alternative...just seems like a shame as the little 4 speed changes smoothly in all the rest of the gears

. I can hold it in gear now after removing the plastic cover over the shifter (tranny hole appears to be a tad small) but there is something internally wrong, like a bent selector fork or a worn gear that's pushing the mesh apart under load. Il see how I go with time.

I wouldn't say no to a FT4wd 5spd

.

Regards

Doug

YouTube · Post by **El_Freddo** » Tue Nov 05, 2013 6:29 pm

Subydoug wrote:I wouldn't say no to a FT4wd 5spd .

Me either (to another one or three) - the trick is finding then paying for them

If you do get one, split it and shove an LSD up front - you won't regret it! I love mine and yesterday it really showed how valuable it is. I reckon one time it was the front end that dragged the rest of the car up over the obstacle when the rear lost traction. It was awesome!

Cheers

Bennie