1980 Kz 750 e engine questins

So this is what I have going on right now I took the engine off a 1980 kz750e and put it on my 2003 kfx 400 and have a few questions
First question the two breather tubes on the top of the engine what can I all do them can I seal them off witch would be my number one choice cause I do nothing but ride in sand
Second question the breather that went to the bottom of the air box how do I properly plug that off or put a filter on it I wanna run pod filters
3rd question what jets should I run when I run pod filters I will be putting a custom made 4 into one exhaust going to a two brothers can
Fourth question how big of a nitrous shot can I put to this engine or is nitrous down right to much for the stock guts of the engine

1] plug them
3] they make jet kits
4] the engine has cast pistons, I wouldn't unless it has an aftermarket big bore kit with lower compression pistons

pics?


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Do you know a good starting point for the jets I am completely new to this. And I have the top two vents plugged off already I just don't have the bottom one under the carbs plugged yet

The lower tube is a crankcase vent. Keep it open. Running it into a catch bottle or sticking a small filter on is the standard procedure for what to do with that when running pods.

No clue on jetting, that's why a jet kit was suggested. Dynojet makes the best because they come with new needles which affects the midrange.

If you haven't adjusted the valves on that engine you should do that before running it. The valves tighten with mileage and you will toast that engine straight away in the environment you plan to run if the valves are overly tight. I'd run some good synthetic oil in that thing too. Rotella synthetic is the best of the cheaper oils appropriate for that extreme environment.

Good luck and get some mufflers

DynoJet has a kit for the KZ750E/H. A good jet kit is more than just the jets. They also include the needle a instructions,
As for the vent just clamp on a small filter.

And get rid of those filters[?].
Get some UNIs or K&Ns. The cheap ones restrict the air flow the air passages in the carb ventri


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KZ750 Jetting for PODs and 4 into 1:

Slow pilot jet #35
Primary main jet #70
Secondary main jet #140

Dynojet kit is another option.

As Nebr_Rex said, get UNIs or K&Ns. Or at least cut the rubber that blocks de air jet and diaphragm vent at the intake.

Cool I will get those jets and filters yeah I just have those filters laying around And put them on so I could romp around on it I had to feel how quick it was And it definitely scares ya a little bit

Murder quad. :ohmy:
Steve

So your saying I prob should not shoot nitrous cause I have a 15 hp bump nitrous kit that needs to be put on something

I'd bet you will get more than 15hp by properly sorting the carbs and installing proper exhaust.

That's what size of valve I have on the kit right now I can get bigger I just don't wanna grenade that motor I know there's no really safe amount to shoot I just wanna know if anyone had shot nitrous threw it and what size they shot I don't wanna over do it.