Need help on project

[SoCal250]

The manifolds in the parts bin don't have that top collar to install the connecting tube between both. Is that needed to run ?

The manifolds in the photos above are RZ type and have a port on top to accommodate a crossover tube (or boost bottle), which is a common performance upgrade.
Stock RD400 manifolds do not have the port. It is not required.

[Tropic-al]

Thank you SoCal for the advice. Just learning from all of you. Hopefully I will get it running soon.

[Tropic-al]

Hi all. I'm back at it after Holidays, family visits, etc. Think I have everything to start it. One nagging question is what do I disconnect and/or plug at carburetors to not use the auto lube pump and run with pre mix ?? Pump is installed where it goes with no cables or hoses leading to it as of now. Will it spin and seize as there is no oil to it ?
Later on after everything is running smoothly i will connect the auto lube system.
Hope this is not a too confusing request. 

[SoCal250]

Why are you wanting to remove or bypass the pump? You're going to create more work for yourself (and likely more headaches down the road) than just hooking it up and running it.

Oil tank hose (tank to pump) 90445-09122-00
Oil feed hose (pump to carbs) 90445-05M07-00  One package will do both sides on a RD400 if the tank is in the stock location.
Bleed the pump with the screw on the side of the pump housing. When no more bubbles appear you're done.

Here's where the pump distribution lines connect. (I reused the pics from 2steve's previous post to illustrate the location of the oil lines on the carb bodies.)

Right side


Left side

[Kawtriplefreak]

Plus one. Premix on the street sucks.

[1976RD400C]

To answer the question about having the pump spin with no oil going to it, I wouldn't do that. You can take the plastic gear off the inside of the side cover so it won't spin.

[m in sc]

if you read back, he wants to run premix as a test before relying on the pump.

heres what you can do.. and its easy.  don't hook up the pulley cable at the oil pump.. just  let the pump run at min stroke. thats going to be almost nothing oil wise.  but it also keeps the pump lubricated and it will bleed it out when you're test running. then after the 1st tank, hook the pump up and set it and youre golden.  I know some guys that used to race triples would run the pump just to lubricate the main bearings , have the pump set to a very minimal  static setting, then run premix in the fuel. different system but it absolutely works.

 

 

[Tropic-al]

Thank you SoCal for your concern and advise, it's well taken.
Like m says, since I mounted the RD400 motor on a FZ600 frame, I still have to find an oil reservoir and a mounting place for it. Have a few ideas. Before I spend $ on anything else I would like to see the motor start, run and shift as it should. Somebody else rebuilt it and has never been started. Hence the premix as a first step. Hopefully everything will go well and then I'll hook up the pump. 
Another thing i noticed is the fittings where the oil feed hoses (circled in red in SoCals picture) attach to the carbs are crushed. Can I get those with the lines from pump to carbs from a vendor?
Hopefully I can get someone to help with posting some pictures. It would be a lot easier to explain my needs and work done. Thanks again to all for your input.

[SoCal250]

The oil nozzles on the carb bodies are no longer available, however Economy Cycle sells reproductions.
The hose for pump to carbs is still available from Yamaha. In my previous reply I gave you the part number. One pack is enough to do both sides. Economy Cycle carries that as well.
The hose clips used at both ends of the distribution hoses from the pump are also available from Economy.
 
The supply hose from tank to pump (90445-09122-00) is also still available, and if I remember right it's about 700mm (27.5") long so depending where you mount your oil tank it may work.
EDIT: just measured a new one from my inventory to be certain on length and my earlier statement was about right, and it's closer to 27.7"

[m in sc]

as far as posting pictures... write your reply. hit 'preview' and at the bottom you then have a bar where where you can drag and drop files. thats the easiest way.

its supposed to show up when typing a reply but.. some glitch. see here: