Timing

[Twister]

Check out my build thread Twister, the link is in my signature, it will tell you what has been done to my Ranger in the past few months and what future plans I have for it.

I checked it out. Very nice man

 

[Twister]

Well i found my timing marks. I am going to go and try to get the car timed.

 

[dangerranger83]

Well i found my timing marks. I am going to go and try to get the Broncho II timed.

Fixed it for ya

Seeing that it ran halfway decently, cant be off to far.

 

[Twister]

Well i found my timing marks. I am going to go and try to get the Bronco II timed.

Then i fixed it for you

Fixed it for ya

Seeing that it ran halfway decently, cant be off to far.

Yeah i was surprised. I was not really all that far off from where i timed it by ear. Well i set it to 12 with the advance blocked. It did not help a whole lot but it did some. I think the carb is just dumping way to much fuel in. I need to adjust the fuel mixture as i have not touched it yet. When i give it some gas it does the same thing my Bronco would do before the swap if i hit the skinny pedal to fast and deep. So tomorrow i am going to adjust the mixture and hopefully that will help.

 

[dangerranger83]

What's it do when you hit the skinny pedal? When mine is cold and I hit the gas, it back fires out the intake but once warmed up, all is good except my damn high idle issue. I never touched my idle screws, due to I never took off the factory anti tampering things on them. But when the high idle does go away, she idles at 800rpmish.

 

[kimcrwbr1]

Then i fixed it for you




Yeah i was surprised. I was not really all that far off from where i timed it by ear. Well i set it to 12 with the advance blocked. It did not help a whole lot but it did some. I think the carb is just dumping way to much fuel in. I need to adjust the fuel mixture as i have not touched it yet. When i give it some gas it does the same thing my Bronco would do before the swap if i hit the skinny pedal to fast and deep. So tomorrow i am going to adjust the mixture and hopefully that will help.

I would try setting the timing at 10 degrees and adjust the idle screws for the highest idle or vacuum pressure with the advance connected to the vacuum tree (manifold vacuum). Then turn the curb idle screw out until you get around 800 rpm. make sure the engine is all the up to temp when making these adjustments. Once you get it dialed in then you can adjust the choke high idle speed at around 12 to 1400 rpm and the thermostat spring tension to fully open about 3/4 of operating temp about 4-5 minutes after you start it.

 

[kimcrwbr1]

What size venturi carb and jets do you have in it. For best performance you want a 1.08 venturi with #48 or #50 jets.

 

[Twister]

I would try setting the timing at 10 degrees and adjust the idle screws for the highest idle or vacuum pressure with the advance connected to the vacuum tree (manifold vacuum). Then turn the curb idle screw out until you get around 800 rpm. make sure the engine is all the up to temp when making these adjustments. Once you get it dialed in then you can adjust the choke high idle speed at around 12 to 1400 rpm and the thermostat spring tension to fully open about 3/4 of operating temp about 4-5 minutes after you start it.

Does it matter if i run it at 12?

What size venturi carb and jets do you have in it. For best performance you want a 1.08 venturi with #48 or #50 jets.

I have 1.08 venturi carb, i am not sure of the jet size tho.

 

[Twister]

What's it do when you hit the skinny pedal? When mine is cold and I hit the gas, it back fires out the intake but once warmed up, all is good except my damn high idle issue. I never touched my idle screws, due to I never took off the factory anti tampering things on them. But when the high idle does go away, she idles at 800rpmish.

If i push it to fast it will bogg down really fast and almost die if i dont let up really fast.

 

[Twister]

Should your carb make a sucking sound (best term to describe noise) when the air cleaner is off?

 

[dangerranger83]

Ya, that's the air rushing into it. Just like a vacum cleaner hose, you can hear the air rushing into it. You can say that your engine is a vacuum cleaner. But be sure that its not a vacuum leak you are hearing.

 

[kimcrwbr1]

I just set my timing at 5 degrees btdc and readjusted the idle screws for the highest idle and it runs real good. You just need to keep playing with the timing and idle air untill you find the sweet spot. you want that balance between smooth idle and steady gain when you push the skinny pedal down at all speeds. Just keep retarding the timing a little at a time to where you get rid of that dead spot when you punch it and keep adjusting it until you start losing it on the lower end. What I think is happening on the duraspark dizzy is it advances too far on the upper end and you cant hear the pinging like you would on a V-8. Plus the fact the damper if not new is giving a false reading on TDC. Dont be afraid to try different settings for the timing and adjust the carb when you adjust the timing. When you get it right you should see a spike in your fuel mileage also.

 

[kimcrwbr1]

If you can get a vacuum guage that will tell you if you have a vacuum leak or something else is wrong with your engine. Mine runs best at 16 hg at an idle and the idle screws are about 3 1/2 turns out each.

 

[dangerranger83]

My dad says the timing may be off in mine sothats on my todo list. I have a vacuum guage, Ill use that too. But I was in such a rusdh to get my truck running that I didnt get the anti-tamper things off my idle mixture screws so that at the moment is a no go but it runs fine just need to re-check the timing.

 

[Twister]

If you can get a vacuum guage that will tell you if you have a vacuum leak or something else is wrong with your engine. Mine runs best at 16 hg at an idle and the idle screws are about 3 1/2 turns out each.

Where would i attach the vacuum gauge at? I have one just dont know where to hook it up at.