Yeah. the tripple su set-up looks great but, i wonder to myself, why not webers??? If you got 3 carbs to put up with why not go the best. shrug!!

ok Frank.. here's a general set up for tripple's on a Z..

2.4 2.6 2.8
Street worked motor. 35/75 cam grind. (about 290 duration). Extractors/exhaust. head work. etc.
choke = 34 - 36
secondary ventury = 3.5 - 4.0
emulsion tube ( this holds the fuel and air jet) = F 15 / F17 16
Main fuel jet = 125 - 135
Air jet = 170 - 180
Pump jet = 45
Idle jet = .45 - .50
Idle jet correction = F8, F11 F14 F13 F2 F4.


Stock Motor. 2.4 2.6 2.8
choke = 28- 30
secondary ventury = 3.5
emulsion tube ( this holds the fuel and air jet) = F 15
Main fuel jet = 120 - 130
Air jet = 170 - 180
Pump jet = 45
Idle jet = .45 - .50
Idle jet correction = F8, F11 F14 F13 F2 F4.

so from standard to worked an engine only really needs a richer fuel jet and bigger chokes. Usually if your over carbed u can go down a choke size or 2 and leave the jets.

These F numbers do not run in numerical order. Usually the F number is not critical, It basically determins the size and configuration of the bleed holes in the tube. Some have longer barrels etc. Remeber a weber totally mixes the fuel with air and atominses it before it gets to the engine. Thats what the emusion tube does. emulsifies or mixes.

Hope this helps ya Frank. If your stuff is pretty close to these setting you'll be right. But dont be suprised if you put em on and start ya engine and it sounds like its running on 4 cylinders
My engine sounded terible for about 5 mins till i got the carbs balanced.

You need or should have a Air synchro tool. Basically you put it over your carb intake and it hadsa float to measure the air flow rate. Get this even on all carbs. I use it heaps on the su's too. Just sticking a tube down the carb with ya ear to it is not close enough. I use to tune them by ear but when i got the synchro tool i was still at least half a turn out.

ps. about the fuel lines.. Yeah. if theres no return and your fuel pump is still pumping fuel. Where does all the fuel go?? shouldnt the preasure build up??? strange. 240 carbs and fuel lines i think dont have a return either. but the 260 does.

Also the manifold i use is a marnerford. made by BORG WARNER.
Its huge and you can buy them over the counter here for about $300.
Over here there sold as redline.

Thanks Pete! That's golden. The Webers didn't come with any manuals or instructions (only sales receipts from Bob Sharp), so I'll be saving this info for when I install them.

By the way, my manifold is a CANNON brand; the on-line price for them for triple DCOE sidedrafts on a Z engine is $320 USD. They've been opened to match the port size of the Z head. The set up came with all springs, linkage, fuel lines, pressure regulator valve and gauge, and three choke cables. Not sure how I will hook the choke cables up yet; I might settle for two only.

And yes, the 240 has a fuel return line. I still have to wrestle with that problem, but there are enough members in this Club with tri-power Weber setups to tell me what they did with their fuel and hot water lines.

What part of Australia are you in or near? Do you ever get to the States? (I would stand you to a pint if we met).

Frank

*(Oh, yeah ~ the mechanical fuel pump is internally regulated. Once it reaches a set pressure [whatever I dial in on the fuel line regulator] the pump will stop delivering until pressure drops below that figure. There are one-way valves inside the pump which allow for fuel to be recirculated when the carbs don't need so much. The pump is always working as long as the engine runs of course, but what it does with the fuel is determined by how much the SUs need. Six-throat DCOEs are gonna need far more fuel than two SU singles, so among my concerns will be the stock pump's ability to feed them).

hehehe..
im not too sure if you could burn enough fuel to run it dry. Those standard pumps deliver a lot of fuel.
Most peoples i know use the mechanical and an electric one. Just to be sure.
Im in Adelaide which is 1000 miles west of sydney. we've got good registration laws in this state and most of the old cars from sydney and melbourne end up here.
Never been to the states either. its an expensive plain ticket

Well, our western states, between the Rocky Mountains and the Mississippi River, probably resemble your outback, except maybe the roads are better and the towns are slightly larger. Plenty of road-room out there, with straight roads miles long. Highway speed limits range from 55mph (88.5kph) in some states to 70mph (113kph) in others, but Nevada has a lot of highway with no speed limits (3,000,000kph) ~ just reasonable and prudent in consideration of traffic and conditions. We don't have Wallabees or 'Roos, but there are plenty of other wild things to hit out there (including the fictitious "JackaLope", which everyone seems to collide with coming home from the pubs late at night).

East of the Mississippi River, most of our country is beginning to look like downtown Sydney. Along our East Coast, there is an almost continuous swath of humanity from Boston Massachusetts down to about Washington DC. The word "Megalopolis" comes to mind. It's nuts. People get shot in fights over parking spaces (really!). ("Too many hounds, not enough rabbits"). Here in Connecticut, we're right in the middle of that corridor. One thing in our favor is that we have our backs to the sea, so our neighbors to the South are very quiet.

The country's almost 3,000 miles wide coast-to-coast. I've driven it in my Z car twice, and the length of Canada once. (Canada's not as much fun. They have pretty rigid speed cops up there and low speed limits. And they frown on Yanks coming up there to tear things up, so it's not the place you want to get into trouble).

Still, if you ever get here, tell us. First pint's on me.

Frank

ok.. i thought this was a thread about engines but hey!!!!!!

Yeah here in Aus its heaps big but theres nothing here.
Its about 3000 miles from sydney(east coast) to perth (west coast).
and you'll see a whole lot of nothing on the way. except kangaroos and Emu's (big ostrige). East coast is nice and green but go about 500 miles west and its all desert or scrub. (bush).
Speed limits here r universal. 110km (66ish miles)
in the city its 60 or 50 km.

I dont drive my Z too far when i can help it. I drove my GM sedan to Gold coast and back. thats about it. 2000 miles away.
hahhahah.. we dont know what its like to go to another country. we cant just drive across the border.. if you say overseas we think " what Tasmania". hehehhehhehe.
Actually our nearest neighbour is New Guinea which is about 20 miles from Aus.
Things like ice and snow we just dont get. Our highest mountain is 2000metres. you get snow there but thats about it.
in adelaide our temps range from during the day 12c - 43c (degress celsius) usually its warm. But still Datsuns rust out here too. All cars do actually. the only tough enoiugh car to put up with rust is the Volvo. go figure.

I like my sports but its sooo lame over here for motor sport. We get the F1 and super bikes and indy car. thats it.. Z's never did any good in the local stuff here. Mainly fords and chev stuff. Z's won the rally's here till the escort came along.
We use to have a touring car championship which was raced with cars that you could only buy from the showroom. and then they'd put you in categories according to Value$$$. This was great untill the Nissan Skyline with 4 wheel drive and twin turbos beat all the local stuff 2 years in a row. They got all pissed off and closed the categories to only Ford and GM V8 cars. "killed it"

Ooops! You're right. Sorry 'bout that ~ we covered so many interesting subjects, I just got carried away and led us down another path.
Duuuuhhhh!

Its all good..
didnt get too much info out of the thread anyways...
maybe it'll pick up soon..

I'm ok if you guys ver off the subject a little, I find it interesting. I just watched a show on PBS about Australia, and WOW, very interesting place. How about that dead cat tree? That was something, and all those flies, I bet you could make a living there selling fly swatters. There was that town mostly underground and then that canyon oasis, whatever it was, that looked awesome. Well anyways, what a beautiful place you live in. I would love to tear up the roads in a Z car there. A Mad Max Z car that is. So I wonder how a Z engine with twin turbos would do, preferably an F54 block with a N42 head, ummmmm. (keeping to the subject, )

Hahaha ~ you're funny, Paul. Thanks for "getting us back on track".


Actually, I'm wondering how well any of us spoiled Yanks would do there, trying to drive a Z ("Zed") across the Aussie continent. Too few watering holes, I suspect.......and if you broke down in the outback you would either have to have a lot of spare parts and tools, or a strong Angel to keep you from becoming Dingo Chow. Also, I wouldn't want to have to pay for towing my broken-down Z car from say, Ayers Rock back to say, Perth. Might be a bit costly, unless I found a nice tow truck driver who took pity on me and agreed to do it cheap. ( Ha!)

A Yank's biggest threat would be having our airconditioner break down in the middle of the outback! We'd park it and refuse to drive further until someone came and fixed it! Hahahaha.

And Pete, we're having such fun with you I nearly forgot my Membership Director duties. Please pretend I remembered to encourage you to submit a few photos of whatever Z Car project(s) you might be working on, in our MEMBER RIDES gallery. Just contact Jim (WebMaster@CTZCC.Com) and he'll give you a password/ID so you can Post pix of your car for the rest of us to enjoy. You certainly don't have to wait until the car is clean or finished ~ most of our cars are works in progress and we enjoy seeing what other members are doing with theirs.

Thnx/Frank T

Well good morning Frank. Yes, having A/C and plenty of water is a plus. Also a hand gun would be helpful. Of course you should trust your Z, not to break down, after all it's a Z car. My biggest concern, besides having the Z in tip top shape, would to have ALL, NEW coolant hoses, big and small. Also for the hot climate, maybe a bigger radiator, an oil cooler and tinted glass. Louvers would help too. Now I had kangaroo meat before, so I wouldn't worry about starving. As long as the hunter doesn't become the hunted, you should be alright.

By the way, Pete ~ because we were originally on the subject of blocks and heads, and I mentioned Bryan Little's website, I thought you might find this interesting. When I spoke with Bryan last week he said he was busy trying to save a P-90 head from an L28, which had swallowed a small aloooominum nut and bent a valve. It sounded interesting so I asked him to bring it over to my bench and let me watch the progress.

I've included some quick photos of the job and I was happily surprised to see a tool which was completely new to me since I last owned a Z car. It's a valve spring compressor for OHC engines which allows you to pop a valve in or out in seconds, without removing the cam. Some mechanics are probably familiar with this handy tool but it was completely new to me and I expected to have to remove the valve the old way. This tool hooks under the cam and pulls up, while the 2nd arm covers the valve spring and presses down. It's adjustable to fit any size application.

Anyway, Bryan replaced the bent valve with a new one, lapped the valve and seat, and tested it overnight ~ not a bit of a leak.

And a Good Morning to you, too Paul!

My response to your entry is more appropriate under Off Topic, so please see my entry there?

Frank

Ok, I'll try and stay organized here. That does look like a good and handy tool. I've used the other spring compressor tool, but yea I think you have to remove the cam. Test overnight? Let me guess, something liquid in the combustion chamber, and it didn't leak down.

Ooooooo....you're good.

Actually the reverse. He sat the head on its side, intake port up. Dried the combustion chamber thoroughly, then put about 1/2 a shotglass of either brake cleaning fluid or penetrating oil (I didn't see which) into the intake and covered it overnight. Next day it was all still in there and the chamber was still dry. Perfect seal.

hey all...
that valve remover tool looks great. i think that one is used to take valve springs off without taking the head off.. quick way for the mechanic to do valve stem seals. I use the old old style which wraps around the head. Holds the valve head (combustion side) and pushes the spring down.
If your lapping valves then the head has to be off and either will do.
Nice pics Frank. I'll be keeping my eye out for one of these.....

And all you guys..... bring lots of water if your going Australian inland.
Stay on the coast and theres heaps.. go inland and theres nothing.
Sometimes upto 200km (120miles) or more without petrol stops is not uncommon. Stay on the highway and you'll be right. Go off the beat'n track and look out.
its like the bandlands but covers 1000Miles x 1000Miles and then some.
Big radiators the lot...