distributor installation question for odd-fire 225 - JeepForum.com

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post #1 of 18 Old 09-18-2011, 05:02 AM Thread Starter
fastford5913
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distributor installation question for odd-fire 225

I have been installing a new valve-train in my 225 odd fire engine and i have run across a problem.i put in the timing chain , installed front cover ,etc,now my problem is this i'm ready to install the dizzy,could someone tell me which way the rotor button should point????I put it in pointing to #1 cylinder but that comes up to #3 on the cap...should i install it with the rotor coming out to point at #1 on the cap when all is installed.any help will be appreciated as i'm ready to hear this thing bust gas.thanks guys

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post #2 of 18 Old 09-18-2011, 07:10 AM
gojeepin
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Yes. You should point it to #1 on the cap so you can easily keep track of your cylinder wiring on the cap. That way you can put install the other wires relative to #1.

Is your engine set at top dead center of the compression stroke for cylinder 1?

Vibration? Bump steer? Wandering? Read the article (sticky) on Steering, suspension, and driveline.
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post #3 of 18 Old 09-18-2011, 08:26 AM
JeepHammer
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No verification of COMPRESSION STROKE,
No verification of TDC of #1 Piston,
No Verification of Balancer Mark and 'Zero' on the timing cover,
Didn't correct the distributor shaft to compensate for rotation of the shaft during install,
Didn't line up for #1 plug wire location,

This is a disaster in slow motion...

You MUST do the following,

1. Find Compression Stroke starting on #1 cylinder.
2. You MUST bring the piston up to TDC in #1 cylinder.
If you don't VERIFY TDC of COMPRESSION STROKE in the #1 cylinder,
You WILL NOT get the distributor in the right way.

Once you VERIFY TDC of Compression,
3. You check your balancer 'Hash' mark to make sure the balancer isn't lying to you.

4. Mark your distributor housing for the location of the #1 plug wire.
And since it's an odd fire distributor, you MUST use the 'Correct' #1 plug wire terminal or this won't work.

5. Once you have marked the #1 spark plug terminal ON THE DISTRIBUTOR HOUSING, you take the cap off,
Then start the distributor into the block.
Remember to back the rotor up in ROTATION about one terminl space because the rotor is going to move forward as the gears engauge.

The gear is spiral cut, so it's going to rotate the shaft/rotor as it engauges the camshaft gear.
If you DO NOT compesate for this rotation before you engauge the gears, the rotor will wind up PAST the #1 terminal mark you made on the distributor housing when it's fully installed.

I would suggest you get the manual out, or get one if you don't have one, and find out what direction the vacuum advance is supposed to aim and set the housing with that vacuum advance pointing at the correct direction.

Then I suggest you set the rotor in the correct location (about one cap space in rotation BEFORE the mark you made on the housing for #1 plug wire location so when you drop the gears together, the rotor comes around to the mark you made on the housing when the distributor seats on the block...

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post #4 of 18 Old 09-18-2011, 11:35 AM
jeepdaddy2000
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Quote:
I would suggest you get the manual out, or get one if you don't have one, and find out what direction the vacuum advance is supposed to aim and set the housing with that vacuum advance pointing at the correct direction.
The vacuum advance points forward, toward the fan. The stock vac advance uses an input that is 90 degrees to keep the vacuum line from hitting the fan blades. If yours has been replaced with a generic GM unit, you may have to install the distributor left or right to keep everything out of the way.
BTW, one of the best ignition upgrades for this engine is an HEI unit from a 76 Buick oddfire. These are reasonably priced and still available. While they can be a PITA to install, once in, you can forget about resetting the points and timing every three to five thousand miles. It also gives you the opportunity to open the plug gap a bit, giving a bit better power and economy.
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post #5 of 18 Old 06-26-2016, 08:46 AM
1954CJ3B
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Ignition trouble odd fire HEI

Hello I have been having trouble with my 225/ HEI ignition, I have no fire on the number one, all other five fire. What could be causing this condition?
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post #6 of 18 Old 06-26-2016, 09:32 AM
pedal2themetai
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FastFord, Remember TDC comes up TWICE on the crank to one rotation of the Distributor. Make sure you have the right TDC or it well never start or it may start but run very bad.. With that said.. The distributor does not Care what direction it is pointing as long as at TDC of the compression stroke it is pointing to #1 plug wire in the cap and you have room to rotate it to get the proper timing for running.
good luck
tim
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post #7 of 18 Old 06-26-2016, 09:35 AM
pedal2themetai
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1954CJ3B,
plug wire, or cap or rotor. if it fires on the other 5.
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post #8 of 18 Old 06-28-2016, 10:12 PM
MBREW
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I am having a back fire problem on a 225 V6. How do I know which terminal is the #1?
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post #9 of 18 Old 06-29-2016, 08:50 AM
pedal2themetai
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HI, the #1 cylinder would be at the cylinder head that sticks out the farthermost at the front of the motor. #1 plug would be the first one at the front.. follow that plug wire to the cap that would be #1 at the cap.. Check your timing with a light if it jumps around you probably have a bad timing chain or belt.
good luck
tim
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post #10 of 18 Old 06-30-2016, 10:30 AM
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Quote:
Originally Posted by MBREW View Post
I am having a back fire problem on a 225 V6. How do I know which terminal is the #1?
Do you have the stock points or an HEI upgrade?
If it is the stock points, the proper cap will have the #1 terminal molded into the cap. A straight 6 cap will fit, but isn't marked.
If you have an HEI:
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bazinga
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post #11 of 18 Old 06-30-2016, 10:34 AM
MBREW
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Thanks, I have a GM HEI and saw some post about a designated #1 terminal on the distributer. I see no such markings so how do I designate the #1 terminal on the distributer or is it any terminal as long as #1 cylinder at TDC compression stroke?
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post #12 of 18 Old 06-30-2016, 10:48 AM
MBREW
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Thanks, What happens if you use another terminal for #1 as I am experiencing backfires after driving 40-50 minutes but idles and runs well..
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post #13 of 18 Old 06-30-2016, 10:57 AM
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It makes absolutely no difference what terminal you use for #1, as long as the rotor is pointing at #1 plug when the #1 cylinder is at TDC of the compression stroke.

In some cases, the vac advance canister can prevent adequate adjustment room if the distributor is indexed wrong, so keep that in mind.

Are the backfires thru the exhaust or the carb? If it's the exhaust, that's usually a carb tuning problem (too rich). If it backfires thru the carb, that's usually timing related.

Matt


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post #14 of 18 Old 06-30-2016, 11:38 AM
MBREW
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Thru exhaust and may be corrected now after wire change. Had bad terminal at sparkplug 5 and the left side is where the backfires were occurring. Did OK on long drive in heat and traffic yesterday. Thanks for the help.
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post #15 of 18 Old 06-30-2016, 06:05 PM
scottyDive
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It's very possible you have the wrong cap too. Many hei distributors get rebuilt with a even fire cap. This write may help you...rrich wrote it and he was the expert in the dauntless 225.

http://www.jeepster.org/swchapter/hei-2.html

Scott
84 CJ7 258, 2150 TFI nuttered 2" shackle lift 33's
70 Jeepster Commando 225 HEI 3spd 2" lift
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