Doug's EA81 Rebuild stuff.

RSR 555 · Post by **RSR 555** » Sun Oct 20, 2013 5:48 pm

Looks good so far Doug. I'd look at putting a vacuum balance pipe between them to, for your brake booster. Maybe also put some hex key bolts to hold them down.. gold cad plated for extra HP

Subydoug · Post by **Subydoug** » Sun Oct 20, 2013 8:00 pm

Yeah, I was thinking or running something like a 1/2 inch steel pipe between the two sides. Could pull all the vac stuff from that and run the pcv into it. Would make tuning a lot more forgiving and brace the whole setup too.

Deff with the gold plated Allen bolts. Heaps more grunt!, though obviously I won't be able to tell from the boundless power increase from the twins!

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Regards

Doug

RSR 555 · Post by **RSR 555** » Sun Oct 20, 2013 8:46 pm

Yeah.. that's what I was thinking.. a pipe in between the intake tubes and run all your vacuum lines off that

Yep.. going to be hard to tell the difference with all that HP

Subydoug · Post by **Subydoug** » Tue Oct 22, 2013 10:12 pm

Cleaned off the old motor and bolted the carbies onto it, messed around with a linkage kit. Will need heavy modification.

These manifolds suck

. I should have given up while it was only half munted. Il grind it all flush and start again. Messed around with the mig some more, for the life of me cannot get it to weld nice with argon. Il grab some more argashield on saturday and reweld it. failing that Il just use the arc and pick up some heavier duty pipe.

Another thing that's been bouncing around in my mind, I know that subaru's twin carby manifold was a single "log" style with two carbies on it, both being toward the center. That would be a lot easier to make, but I cant really see how it would be better then my progressive, both being only 34mm throats.
My thoughts were along the lines that the individual manifolds being seperate would only have air pulled one way thru them vs both heads connected together and each head drawing air in turn. With the stock manifold size it occurs to me that the firing head of 2 cylinders, pulling in around 700 or 800cc of air, could possibly pull air from the other head manifold? but then theirs inertia and the small fact that the whole manifold is at a lower pressure to the atmosphere, so it should be easier to pull air thru the carby. Hmmm, I have to think about this more. Hard to really understand what goes on with air flow under conditions like an engine manifold. Thoughts?

mmmmmmmm tempting to pull the heads off the old motor, ring it, port it and boost it

Regards

Doug

RSR 555 · Post by **RSR 555** » Wed Oct 23, 2013 5:09 am

Subydoug wrote:Cleaned off the old motor and bolted the carbies onto it, messed around with a linkage kit. Will need heavy modification.

These manifolds suck . I should have given up while it was only half munted. Il grind it all flush and start again. Messed around with the mig some more, for the life of me cannot get it to weld nice with argon. Il grab some more argashield on saturday and reweld it. failing that Il just use the arc and pick up some heavier duty pipe.

My best friend Joe or I can help with welding up for you Doug.

Argon is really designed for soft metals like Aluminium. I'd recommend Migshield for use on mild steel. Argoshield is great if you are doing a mix of different metals but you really need 2 different hand pieces/setups when working with soft and hard metals.

Subydoug wrote:Another thing that's been bouncing around in my mind, I know that subaru's twin carby manifold was a single "log" style with two carbies on it, both being toward the center. That would be a lot easier to make, but I cant really see how it would be better then my progressive, both being only 34mm throats.
My thoughts were along the lines that the individual manifolds being seperate would only have air pulled one way thru them vs both heads connected together and each head drawing air in turn. With the stock manifold size it occurs to me that the firing head of 2 cylinders, pulling in around 700 or 800cc of air, could possibly pull air from the other head manifold? but then theirs inertia and the small fact that the whole manifold is at a lower pressure to the atmosphere, so it should be easier to pull air thru the carby. Hmmm, I have to think about this more. Hard to really understand what goes on with air flow under conditions like an engine manifold. Thoughts?

Yeah, the problem (probably not the best word to use) with the Subaru Flat 4 is the engine fires both RHS bank then followed by both LHS bank. Firing order 1,3,2,4.

3 ----I---- 4
1 ----I---- 2

So because of the difference banks firing, you need to have a balance pipe but it doesn't need to be big. There is pictures of twin webers running on top of each bank, so it does work. Lots of different things come into play with air flow, i.e. camshaft grinds, camshaft timing, valve design, etc.. so really it's a play and see excersize. There is lots of stuff on the web about them, but from my experiances, I play and learn myself but take ideas from people who have played before me

Subydoug wrote:mmmmmmmm tempting to pull the heads off the old motor, ring it, port it and boost it

Now we're talking.. no substitute for boost

Subydoug · Post by **Subydoug** » Wed Oct 23, 2013 9:16 am

Yeah general rule of thumb is 100% argon for non ferrous metals and argon/co2 mix for ferrous. Should still be able to weld mild steel with argon though. Not as nice as a mix but not honeycombe like mine was. Looked like there was no gas at all. Oh well, Il just get another bottle on saturday. I dont do enough welding to justify getting a bottle from BOC, so its kinda expensive.....might try 100% co2.
Should just stick to stick. Less variables

Yeah was definitely going to run a balance tube of some sort. These linkages are pretty micky mouse and I cannot see them holding perfect sync with the throttle plates. Eh, Il work something out.

Dont tempt me! td04's pop up from time to time cheap as chips. Nah, I think Il pass on the turbo bit. Too much work....yet I find myself making twin carb manifolds

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Maybe thats something for the vortex.

Regards

Doug

Silverbullet · Post by **Silverbullet** » Wed Oct 23, 2013 4:56 pm

I got an E2 size bottle recently (the hip height one) from BOC; $100 on the day, $50 per quarter rental. I don't do much welding either but those disposable ones are seriously expensive, I think you get about 30 seconds continuous out of one before it's empty? And I don't mind paying rental for having as much as I'll need whenever I need it.

That twin manifold pic earlier is looking a bit like the "safari" engine that we've only ever seen 1 picture of, you must be on the right track

Now all you need is the twin carb heads to go with it

Subydoug · Post by **Subydoug** » Wed Oct 23, 2013 7:49 pm

Yeah I might just bite the bullet and get a tank. The little disposable tanks last me a while. I’m never really doing large quantities of welding. Certainly lasted me longer then 30 seconds. Probably more like 3 or 5 min of continuous welding. Thats a lot of tack welds for me. Tack it together with the mig and weld it with the stick. Im probably better at setting up and running stick anyway.

Oh and I refuse to run flux core mig wire

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Meh, Im glad you think so

. Messing around with the linkage more tonight. For some reason the designer wanted the linkage about half a foot above the carbies. Beats me why and looking at it I cant see why It shouldnt be down at carby level.....Il report back once I realise why it was that high

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Hate to admit it but Im a little intrigued now about how it will run.....time will tell.

Regards

Doug

RSR 555 · Post by **RSR 555** » Fri Oct 25, 2013 2:02 am

Subydoug wrote:Paul, by all means post your carby setup. I would like very much

Well I'm really in 2 minds.. should I go with option A or B?

Option A...

Or Option B...

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Subydoug · Post by **Subydoug** » Fri Oct 25, 2013 9:08 am

Definitely the trumpets

. Looks like an ea82 mani? making a carb'd ea82 with twin port? Put some hot cams in there and let her rip

Probably gonna have to move the alternator and PS pump in my car to get these carbies where I want them. They are two high as it is anyway. No room for air filters without hood scoops or a 6" lift kit

. Oh well, too busy basking in the the sweet silence of my tailshaft to worry about carbies at the moment.....still chuffs out a puff of smoke now and then....Il just have to call it smokey

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Whats the verdict on your CV shaft? have the guys got it back to you yet? look any better then before?

Regards

Doug

RSR 555 · Post by **RSR 555** » Fri Oct 25, 2013 10:17 am

Subydoug wrote:Definitely the trumpets . Looks like an ea82 mani? making a carb'd ea82 with twin port? Put some hot cams in there and let her rip

I too love the trumpets

The manifold is actually an EJ18 carby manifold off an early model Legacy. I'm looking to make them up with Weber carby pattern. My engine plan is an EJ25 with EJ22 heads, some porting and polishing. Regrind the cams and fit adjustable timing wheels. All this will power my 78 Brumby.

Subydoug wrote:Probably gonna have to move the alternator and PS pump in my car to get these carbies where I want them. They are two high as it is anyway. No room for air filters without hood scoops or a 6" lift kit . Oh well, too busy basking in the the sweet silence of my tailshaft to worry about carbies at the moment.....still chuffs out a puff of smoke now and then....Il just have to call it smokey .

Nothing wrong with a couple of stacks sticking out the bonnet

Maybe the run to S-Bend well give Smokey a good clean out.

Subydoug wrote:Whats the verdict on your CV shaft? have the guys got it back to you yet? look any better then before?

The verdict is in.. we have come to a unanimous decision. The mark II version looks 400% stronger than the mark I version. They said to me that if I break this one, then they want to fit my engine in their race car, can't understand why they aren't already

I'm going to fit the shaft today and take the car for a beach run on Sunday, so I can make sure all is good for S-Bend

Subydoug · Post by **Subydoug** » Fri Oct 25, 2013 10:56 am

Sweet! running a disty? When's that project gonna be complete

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Im gonna pull out my brand new PCV valve and make sure its not gummed up. If I flog the tits off it, no smoke, but in bumper to bumper, and light acceleration (ie, when the pcv valve is the most effective) it starts to chuff. Im not happy with the catch can I got. It needs to be modified to actually work. Im not convinced that its doing anything but look pretty, and it mostly fails at that too. If the PCV valve is stuck open...maybe I could see what Im seeing.

Wont break? sounds like a challenge! Well if you need a recovery vehicle for sunday let us know and Im sure smokey will be happy to pull you back

.

Regards

Doug

RSR 555 · Post by **RSR 555** » Fri Oct 25, 2013 11:55 am

Yeah, I'll be running the EJ carby version dizzy that bolts straight onto the head. You know my timeline of projects.. I wouldn't hold my breathe

I haven't seen your catch can setup yet, so cannot comment on that but I'm sure it looks good in there

Yes, I said to them.. If it breaks, they will know about it when they arrive at the shop the next morning, as there will be a CV shaft sticking out of their front window !!

You're quite welcome to come down to the beach on Sunday if you're keen. Tristan wants to take Hatchie for a run, now I've repaired his clutch and we are thinking of heading down around 9am and stay for lunch, then head home around 1 or 2 pm. Come on down, it will be good to have all 3 MYs on the beach.

Wooster · Post by **Wooster** » Fri Oct 25, 2013 12:07 pm

TRumpets look good mate, I also had them on my classic Bonneville. only one negative they will suck in crap so the risk remains if you go that path.

Post by **TOONGA** » Fri Oct 25, 2013 2:13 pm

Which beach

TOONGA

Subydoug · Post by **Subydoug** » Fri Oct 25, 2013 3:16 pm

Meh Il see what goes. Was going to fix the wheel bearing in the vortex and start fixing the rust in my tailgate this weekend...along with maybe welding up another mani. I can do most of that next week during my break. Up to you. Can you handle your yellow tonka toy being put to shame by a stock MY

Cheers Wooster, it really isn't any good as it is. Needs modifying

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Toonga I still got that chrome elbow bouncing around somewhere for you. If you do head up shoot me a text and Il run it down.

Regards

Doug

RSR 555 · Post by **RSR 555** » Fri Oct 25, 2013 7:25 pm

Wooster wrote:TRumpets look good mate, I also had them on my classic Bonneville. only one negative they will suck in crap so the risk remains if you go that path.

Yeah I know what you mean Ray, if I run the thumpos, I'd definitely put the foam socks over them.

TOONGA wrote:Which beach

Somewhere between Tims Thicket and Whitehills. Hopefully too far for you to come

Subydoug wrote:Meh Il see what goes. Was going to fix the wheel bearing in the vortex and start fixing the rust in my tailgate this weekend...along with maybe welding up another mani. I can do most of that next week during my break. Up to you. Can you handle your yellow tonka toy being put to shame by a stock MY

Meh.. who needs wheel bearings in a Tex when you have a pefectly quiet UJ'd Touring Wagon

Hey, you've got enough experience of towing me now, so best I stick with those with know how to tow

Subydoug · Post by **Subydoug** » Fri Oct 25, 2013 7:56 pm

Oops though you were talking to me....

Ok, Ive been there before. Went fishing and caught eff all

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Got a new speedo cable in the wagon to. Now I dont have to take an average to work out how fast im going. I think if I gave it more beef It'd tow a lot better...I was just being a nana last time

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Ok well Il see what goes but I don’t see any reason why I cant go apart from being lazy. Arh reminds me to that I need to modify my 4wd low selector lever so It doesn’t get in the way of 2nd and 4th gear. Il do that tomorrow.

Regards

Doug

RSR 555 · Post by **RSR 555** » Fri Oct 25, 2013 8:32 pm

Yeah.. Taking the rods but not really planning on doing much fishing. It's my youngest son's birthday, so going to bring the tin lids along. Just going to be a beach run, swim and bbq (hotdogs). So fix that lever and don't be so lazy

Subydoug · Post by **Subydoug** » Fri Oct 25, 2013 10:16 pm

Ok Il do my best

. Do you fit all the kids in the yellow subie? I remember back when I was young my folks had an MY wagon, yellow like yours. Used to get us three maggots in the back. I remember when we rebuilt the gearbox and when it was reassembled, the little jelly bean bearing that has something to do with getting out of low range (?) fell into the belly of the box and we had to strip it all back down again

. Ran for a long time on only 3 cyl because of a burnt out valve. Still unstoppable

Had a truck reverse over the bonnet and everything

Range selector shouldn't be too hard. One thing I though would be cool to do would be to put the push button system from my 3AT onto my 4MT. Donno how feasible it is....at first glance It looks like Id have to do something special with the selector shaft. I think Il just shorten the lever for now

.

Regards

Doug