- Posts: 11
- Thank you received: 0
Z1 - Single carb mod
- FEF
- Topic Author
- Offline
- User
I'm thinking about trying to make an intake manifold, and use a single carb. I've found the room to make it happen. However, not wanting to re-invent the wheel (so to speak), I thought I'd see if anyone's done it.
My first swag has me thinking that I'd need a smooth 500CFM carb. I just don't know that I can get it to idle AND run at high RPM, though.
Any thoughts?
Anyone tried it?
Thanks,
Please Log in or Create an account to join the conversation.
- rstnick
- Offline
- User
- Posts: 4389
- Thank you received: 378
Here's one post by Milkman: Stromberg CD carb
Post edited by: rstnick, at: 2006/05/30 21:21
Rob
CANADA
Need a key for your Kawasaki? PM me
1978 KZ650 C2, 130K kms, Delkevic ex, EI, CVK32, PMC easy clutch, ATK fork brace, steering damper, Progressive Suspension, braced swingarm, ZRX shocks, 18" Z1R front wheel.
2000 ZRX1100
2011 Ninja 250R - Wife's
2005 z750s
Please Log in or Create an account to join the conversation.
- The Milkman
- Offline
- User
- Posts: 794
- Thank you received: 194
Ride safe,
Les
had to make it smaller
Post edited by: The Milkman, at: 2006/05/30 21:14
78 650-C2, Stock engine, Jardine 4-2 Exh., 17-38 sprockets, dyna ignition and coils, coil wiring mod, carb mod.
Please Log in or Create an account to join the conversation.
- The Milkman
- Offline
- User
- Posts: 794
- Thank you received: 194
78 650-C2, Stock engine, Jardine 4-2 Exh., 17-38 sprockets, dyna ignition and coils, coil wiring mod, carb mod.
Please Log in or Create an account to join the conversation.
- rstnick
- Offline
- User
- Posts: 4389
- Thank you received: 378
Rob
CANADA
Need a key for your Kawasaki? PM me
1978 KZ650 C2, 130K kms, Delkevic ex, EI, CVK32, PMC easy clutch, ATK fork brace, steering damper, Progressive Suspension, braced swingarm, ZRX shocks, 18" Z1R front wheel.
2000 ZRX1100
2011 Ninja 250R - Wife's
2005 z750s
Please Log in or Create an account to join the conversation.
- wireman
- Visitor
Please Log in or Create an account to join the conversation.
- Pterosaur
- Visitor
why?:whistle:
Compliments to the people that made it work, but it seems to me that it'd be one giant leap backward to the carb and intake manifold setups from the old Indian, Excelsior and Henderson straight fours...
The whole point of a ported head and smoothbore carbs is to give the atomised fuel/air mixture the straightest possible shot at the combustion chamber. The less the flow is disturbed, the more efficient the transfer.
My guess would be that the setup would work moderately well up to cruising speeds, perhaps a bit more - but the swirls and eddies induced by those 90 degree bends in the manifolds would choke the bejesus out of it with a good, stiff wank on the right grip.
But it is an interesting looking and worthy bit of benchtop experimentation...
Please Log in or Create an account to join the conversation.
- FEF
- Topic Author
- Offline
- User
- Posts: 11
- Thank you received: 0
Why? It's a fair question.
One of the main issues with the Z1-KZ engine, in my opinion, is carb sync. Over the years, I've spent too much time, even being good at it, tinkering on carbs. I'd love to be able to have one unit to rebuild.
It's great that there appears to be proof of concept. It's very exciting that it worked with a less then optimal intake. Clearly, the path to the center is better then the path to the outsides. But hay, it worked!!!!
The next step it to make the intake manifold that's more of a plunum type intake with equal runners. I'm thinking of making a down draft intake, that will allow a small auto carb. From this point, I'll have a lot of options. One option might be something like a ~400cfm 4bbl carb. I just might get the throtle responce I'm looking for at mid-power, if I can control the opening of the last set. I've seen some slick 2bbl carbs, a bit smaller, that open in succesion.
Assuming that the above works, EFI is the next step. assuming I can tune a small auto carb, then it should be failry easy to make an open loop Throtle Body (GM) EFI system work. At that point, it will be about the fuel map. IF I can get an O2 sencer in the 4:1 collector, I might even be able to make a closed system work. The EFI would be pretty sweet, but it will take a bit of time to tune.
It's an intresting project. Though, I still don't know where the ari cleaner will go.
Post edited by: FEF, at: 2006/05/31 11:41
Please Log in or Create an account to join the conversation.
- dnestell
- Offline
- User
- Posts: 83
- Thank you received: 0
(no offense milkman, i actually kind of like the idea. it would look great on a ratted bobber or something?)
Please Log in or Create an account to join the conversation.
- kawtoy
- Offline
- User
- Posts: 806
- Thank you received: 6
Harley Davidson- Turning gas into noise without the harmful affects of horsepower for over 100 years.
Please Log in or Create an account to join the conversation.
- Shoe48
- Offline
- User
- Live each day as it is your last
- Posts: 762
- Thank you received: 5
Please Log in or Create an account to join the conversation.
- 77KZ650
- Offline
- User
- Posts: 1397
- Thank you received: 7
just get the whole turbo kit while youre at it:evil:Could you make the manifold from a turbo setup work? They use a single carb.
but more on topic, maybe some old 4-1 pipes cut up would work, just sort of mirror the exhaust pipes for an intake. only shorter lol, but i would think the collector might come in handy...
Post edited by: 77KZ650, at: 2006/05/31 20:51
07 MDP Rookie of the Year
01 ZX-12R street/drag bike. 8.97 @155.7 pump gas, dot tires, no bars, no power adders. top speed in the 1/4: 161MPH
Please Log in or Create an account to join the conversation.