timing ratio

[James Brown]

Just rebuilt the head on my feroza.
The only way to balance my 1000 rpm is:
The Throttle body plate screw for idle needs or is best positioned all the way screwed in. It’s producing a fully lean idle.
I then bacially choose to advance my dizzy all the way advanced as much as the dizzy will let me.
I achieve max acceleration from this set up.
(note: If I decrease the timing to much from this position the feroza will pull back when under hard acceleration and looses power aswell.
just in case your wondering)
Also my accelerator cable allows the butterfly to be fully closed.

The only side effect that I know off is that the cooling system will overheat if and only if I use a thermostat otherwise no other issues.

Asctually the feroza when parked, will drop in idle when the steering is turned.
If I change it to a fully rich idle.
meaning I have tested this. I loosend the idle mixture screw all the way and the steering still when turned drops the idle.
so I don’t see this idle issue a problem I think it’s just the steering pump on it’s way out.

anyways back to the point !!!

Is this set up damaging my motor prematurely
or is this set up fine to use. All feedback on how this set up will affect my motor after a long period of use is wanted.
I guess I can’t really change it.
otherwise the idle will be to high always 1500 to 2000 rpm or it will pull back and have reduced acceleration although I still want to know what’s in store for my motor.

oh I did the valve clearances under cold then hot conditions I thought someone might want to know that info.

thanks.

Topic

[EricTheCarGuy]

It sounds to me like your mechanical timing might be off. I don’t know if that engine has a belt or a chain but you might consider checking the timing marks to make sure they’re set up correctly. If your engine is not in time correctly, it won’t run right and you could damage it. Both mechanical and ignition timing are very important to engine health. If they’re not set up correctly, it can cause a lot of issues. Therefore make sure your mechanical timing is set up correctly and then set your ignition timing to factory spec.

Keep us posted.

[James Brown]

Today I finally had a chance to tear down the front end and check that mechanical timing.
It turned out to be spot on with exactly 35 teeth between the cam and crank sprockets.
I’m glad I had a look, for piece of mind.

I guess my next step will be to run a compression test and compare with specs.

There is also a small idle up system that never came with the motor. It’s pretty basic with only one component and a few vacuum lines but it will be interesting to see if it makes any difference.

[Author]

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