popping from exhaust
+6
rmcomprandy
supervel45
Mark Miller
BBFTorino
dfree383
cool40
10 posters
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popping from exhaust
Ive been fighting a popping under full throttle from the exhaust on my boss 9 deal. Details are, kaase heads out of the box, setup from kaase for the cam they also sent. Flat top pistons 4.5 stroke, stock block with 4.400 bore. Kaase 4500 intake with rons terminator on alchohol. I ran the car yesterday, its a 235 inch rear engine dragster with a glide. I started out 6.02 1/8th mile, popping and farting all the way. Came back to the pits put my spare 7al-3 box on it, went 5.44, still has some popping. timing was at 34 degrees with the old box and verified 34 with the new. backed timing back to 32 and helped somewaht, went 5.39. backed timing back to 30 picked up a little more, went 5.31 and picked up 7 mph. I'd like to have some of yalls ideas on this deal. it fought me in the cougar, now its fighting me on the dragster, at least its easier to work on lol,
fordmonsta- Posts : 236
Join date : 2012-12-30
Re: popping from exhaust
Running lean?
dfree383- BBF CONTRIBUTOR
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Join date : 2009-07-09
Location : Home Wif Da Wife.....
Re: popping from exhaust
fordmonsta wrote:Ive been fighting a popping under full throttle from the exhaust on my boss 9 deal. Details are, kaase heads out of the box, setup from kaase for the cam they also sent. Flat top pistons 4.5 stroke, stock block with 4.400 bore. Kaase 4500 intake with rons terminator on alchohol. I ran the car yesterday, its a 235 inch rear engine dragster with a glide. I started out 6.02 1/8th mile, popping and farting all the way. Came back to the pits put my spare 7al-3 box on it, went 5.44, still has some popping. timing was at 34 degrees with the old box and verified 34 with the new. backed timing back to 32 and helped somewaht, went 5.39. backed timing back to 30 picked up a little more, went 5.31 and picked up 7 mph. I'd like to have some of yalls ideas on this deal. it fought me in the cougar, now its fighting me on the dragster, at least its easier to work on lol,
Years ago I encountered that same issue and it was that the ignition was not GETTING enough amperage to work correctly at higher RPM but, that was not with a CD ignition. That ignition was "inductive" but, I imagine some of the same problems could exist.
For some reasoning your mixture is not getting ignited everytime and that causes the popping down the track ... to lean, for whatever reason, could certainly be the issue.
Re: popping from exhaust
Keep backing off the ignition timing and add fuel. Mine liked 26* but it was A460 headed deal on alky.
cool40- BBF CONTRIBUTOR
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Join date : 2009-08-31
Age : 53
Location : on the 1/8 mile dyno
QtrWarrior likes this post
Re: popping from exhaust
found a bad plug in number 5, and a bad wire on number 1. neither cylinder was firing at idle. ordered a set of moroso wires that they said would fit, they did not. So i'm looking for options on a boss wire, the hole in the head only measures .944 so a regular hemi wire doesnt work.
fordmonsta- Posts : 236
Join date : 2012-12-30
Re: popping from exhaust
fordmonsta wrote:Ive been fighting a popping under full throttle from the exhaust on my boss 9 deal. Details are, kaase heads out of the box, setup from kaase for the cam they also sent. Flat top pistons 4.5 stroke, stock block with 4.400 bore. Kaase 4500 intake with rons terminator on alchohol. I ran the car yesterday, its a 235 inch rear engine dragster with a glide. I started out 6.02 1/8th mile, popping and farting all the way. Came back to the pits put my spare 7al-3 box on it, went 5.44, still has some popping. timing was at 34 degrees with the old box and verified 34 with the new. backed timing back to 32 and helped somewaht, went 5.39. backed timing back to 30 picked up a little more, went 5.31 and picked up 7 mph. I'd like to have some of yalls ideas on this deal. it fought me in the cougar, now its fighting me on the dragster, at least its easier to work on lol,
Simply bad "rotor phasing" could also cause this kind of issue.
Re: popping from exhaust
ran this rotten bastard today, nothing has changed. still popping and farting. Put a new set of plugs in, nothing different. Got me to thinking on what all was transferred from the cougar to the dragster. The only thing left that hasnt been replaced is the engine. Compression and leak down checks out great, I jetted it way rich and way lean, it doesnt make any difference. Got to thinking about quench, as its the only damn thing i can come up with, It is a tight .022. I put a thin head gasket on trying to get the compression up. Would this have anything to do with anything? I"m at a loss, I changed ignition box, rewired the whole car with a K&r setup, new coil, new distributor, everything.
fordmonsta- Posts : 236
Join date : 2012-12-30
Re: popping from exhaust
Did you do anything with the Rotor Phasing like Randy mentioned?
Mark Miller- Posts : 1959
Join date : 2009-09-01
Re: popping from exhaust
fordmonsta wrote:ran this rotten bastard today, nothing has changed. still popping and farting. Put a new set of plugs in, nothing different. Got me to thinking on what all was transferred from the cougar to the dragster. The only thing left that hasnt been replaced is the engine. Compression and leak down checks out great, I jetted it way rich and way lean, it doesnt make any difference. Got to thinking about quench, as its the only damn thing i can come up with, It is a tight .022. I put a thin head gasket on trying to get the compression up. Would this have anything to do with anything? I"m at a loss, I changed ignition box, rewired the whole car with a K&r setup, new coil, new distributor, everything.
When you said the above, as well as good compression/leakdown this came to mind. Very highly unlikely, I know.
https://www.460ford.com/threads/firing-order-camshaft-change-for-460.119624/
Have you changed fuel source? Just asking.
Yea and what Randy said.
So what about the bad plug on one cylinder and wire on another? Surely with that fixed it would run a much better time?
Hope you don't spin a rod bearing or have one get close. Not much cushion there. Doubt that's your problem, unless it's some kind of BOSS head deal.
supervel45- Posts : 4502
Join date : 2013-09-04
Re: popping from exhaust
Call Kaase and get wires and do not lean it out.
Get it figure out before you keep running it.
Get it figure out before you keep running it.
dfree383- BBF CONTRIBUTOR
- Posts : 14852
Join date : 2009-07-09
Location : Home Wif Da Wife.....
Mark Miller likes this post
Re: popping from exhaust
fordmonsta wrote:Ive been fighting a popping under full throttle from the exhaust on my boss 9 deal. Details are, kaase heads out of the box, setup from kaase for the cam they also sent. Flat top pistons 4.5 stroke, stock block with 4.400 bore. Kaase 4500 intake with rons terminator on alchohol. I ran the car yesterday, its a 235 inch rear engine dragster with a glide. I started out 6.02 1/8th mile, popping and farting all the way. Came back to the pits put my spare 7al-3 box on it, went 5.44, still has some popping. timing was at 34 degrees with the old box and verified 34 with the new. backed timing back to 32 and helped somewaht, went 5.39. backed timing back to 30 picked up a little more, went 5.31 and picked up 7 mph. I'd like to have some of yalls ideas on this deal. it fought me in the cougar, now its fighting me on the dragster, at least its easier to work on lol,
You're headed in the right direction...Back the timing up more, until the MPH gains drop off....
Do you have and EGT gauge on it ?? 1 cylinder or all ??
QtrWarrior- Posts : 2703
Join date : 2008-12-02
Age : 65
Location : Bloomingdale, Ga
Re: popping from exhaust
[
Yes it's a boss headed deal. I have gotten alky from 2 different places also. The bad plug and wire I thought was it was apparently not.
quote="supervel45"]
When you said the above, as well as good compression/leakdown this came to mind. Very highly unlikely, I know.
https://www.460ford.com/threads/firing-order-camshaft-change-for-460.119624/
Have you changed fuel source? Just asking.
Yea and what Randy said.
So what about the bad plug on one cylinder and wire on another? Surely with that fixed it would run a much better time?
Hope you don't spin a rod bearing or have one get close. Not much cushion there. Doubt that's your problem, unless it's some kind of BOSS head deal.[/quote]
Yes it's a boss headed deal. I have gotten alky from 2 different places also. The bad plug and wire I thought was it was apparently not.
quote="supervel45"]
fordmonsta wrote:ran this rotten bastard today, nothing has changed. still popping and farting. Put a new set of plugs in, nothing different. Got me to thinking on what all was transferred from the cougar to the dragster. The only thing left that hasnt been replaced is the engine. Compression and leak down checks out great, I jetted it way rich and way lean, it doesnt make any difference. Got to thinking about quench, as its the only damn thing i can come up with, It is a tight .022. I put a thin head gasket on trying to get the compression up. Would this have anything to do with anything? I"m at a loss, I changed ignition box, rewired the whole car with a K&r setup, new coil, new distributor, everything.
When you said the above, as well as good compression/leakdown this came to mind. Very highly unlikely, I know.
https://www.460ford.com/threads/firing-order-camshaft-change-for-460.119624/
Have you changed fuel source? Just asking.
Yea and what Randy said.
So what about the bad plug on one cylinder and wire on another? Surely with that fixed it would run a much better time?
Hope you don't spin a rod bearing or have one get close. Not much cushion there. Doubt that's your problem, unless it's some kind of BOSS head deal.[/quote]
fordmonsta- Posts : 236
Join date : 2012-12-30
Re: popping from exhaust
I don't have a egt meter on it at the moment. I called rons and told them what I had and they reccomended the current pill size and nozzle size too.
QtrWarrior wrote:fordmonsta wrote:Ive been fighting a popping under full throttle from the exhaust on my boss 9 deal. Details are, kaase heads out of the box, setup from kaase for the cam they also sent. Flat top pistons 4.5 stroke, stock block with 4.400 bore. Kaase 4500 intake with rons terminator on alchohol. I ran the car yesterday, its a 235 inch rear engine dragster with a glide. I started out 6.02 1/8th mile, popping and farting all the way. Came back to the pits put my spare 7al-3 box on it, went 5.44, still has some popping. timing was at 34 degrees with the old box and verified 34 with the new. backed timing back to 32 and helped somewaht, went 5.39. backed timing back to 30 picked up a little more, went 5.31 and picked up 7 mph. I'd like to have some of yalls ideas on this deal. it fought me in the cougar, now its fighting me on the dragster, at least its easier to work on lol,
You're headed in the right direction...Back the timing up more, until the MPH gains drop off....
Do you have and EGT gauge on it ?? Â 1 cylinder or all ??
fordmonsta- Posts : 236
Join date : 2012-12-30
Re: popping from exhaust
Have you checked valve lash? Sometimes an exhaust rocker may be a little tight and holding the valve open and causing the popping in the exhaust.
Just a thought
Just a thought
BBFTorino- Posts : 999
Join date : 2015-12-31
Mark Miller likes this post
Re: popping from exhaust
Where's the Number 1 Cylinder Terminal at in your Picture?
Mark Miller- Posts : 1959
Join date : 2009-09-01
Re: popping from exhaust
Mark Miller wrote:
Where's the Number 1 Cylinder Terminal at in your Picture?
Sometimes, you can get away with simply clipping off one side of the rotor electrical tang.
Moving the pick-up plate or an adjustable rotor is the real fix.
Mark Miller and fordmonsta like this post
Re: popping from exhaust
[
It's where the hole is drilled.
quote="Mark Miller"]
Where's the Number 1 Cylinder Terminal at in your Picture? [/quote]
It's where the hole is drilled.
quote="Mark Miller"]
Where's the Number 1 Cylinder Terminal at in your Picture? [/quote]
fordmonsta- Posts : 236
Join date : 2012-12-30
Mark Miller likes this post
Re: popping from exhaust
What would it ( The Rotor Position ) look like if you retarded your timing to 26 degree's and moved the #1 plug wire to the pin on the left of the screw (from your picture), along with the rest of the wires with them in the correct firing order?
I may be thinking the direction wrong but, you get what I'm saying.
I may be thinking the direction wrong but, you get what I'm saying.
supervel45- Posts : 4502
Join date : 2013-09-04
Re: popping from exhaust
supervel45 wrote:What would it ( The Rotor Position ) look like if you retarded your timing to 26 degree's and moved the #1 plug wire to the pin on the left of the screw (from your picture), along with the rest of the wires with them in the correct firing order?
I may be thinking the direction wrong but, you get what I'm saying.
Why do all that, when you can just move the distrib 1 tooth and get it right ??
QtrWarrior- Posts : 2703
Join date : 2008-12-02
Age : 65
Location : Bloomingdale, Ga
Re: popping from exhaust
MAYBE ...QtrWarrior wrote:supervel45 wrote:What would it ( The Rotor Position ) look like if you retarded your timing to 26 degree's and moved the #1 plug wire to the pin on the left of the screw (from your picture), along with the rest of the wires with them in the correct firing order?
I may be thinking the direction wrong but, you get what I'm saying.
Why do all that, when you can just move the distrib 1 tooth and get it right ??
Re: popping from exhaust
rmcomprandy wrote:MAYBE ...QtrWarrior wrote:supervel45 wrote:What would it ( The Rotor Position ) look like if you retarded your timing to 26 degree's and moved the #1 plug wire to the pin on the left of the screw (from your picture), along with the rest of the wires with them in the correct firing order?
I may be thinking the direction wrong but, you get what I'm saying.
Why do all that, when you can just move the distrib 1 tooth and get it right ??
Ok...maybe 2 teeth...
QtrWarrior- Posts : 2703
Join date : 2008-12-02
Age : 65
Location : Bloomingdale, Ga
Re: popping from exhaust
QtrWarrior wrote:rmcomprandy wrote:MAYBE ...QtrWarrior wrote:supervel45 wrote:What would it ( The Rotor Position ) look like if you retarded your timing to 26 degree's and moved the #1 plug wire to the pin on the left of the screw (from your picture), along with the rest of the wires with them in the correct firing order?
I may be thinking the direction wrong but, you get what I'm saying.
Why do all that, when you can just move the distrib 1 tooth and get it right ??
Ok...maybe 2 teeth...
The magnetic impulse gives the ignition the signal to fire so, that has to somehow get re-aligned or move the rotor or cap to match the impulse.
Moving the gear will change the wire location but, not the rotor phasing issue.
QtrWarrior, Mark Miller and maverick172 like this post
Re: popping from exhaust
rmcomprandy wrote:QtrWarrior wrote:rmcomprandy wrote:MAYBE ...QtrWarrior wrote:supervel45 wrote:What would it ( The Rotor Position ) look like if you retarded your timing to 26 degree's and moved the #1 plug wire to the pin on the left of the screw (from your picture), along with the rest of the wires with them in the correct firing order?
I may be thinking the direction wrong but, you get what I'm saying.
Why do all that, when you can just move the distrib 1 tooth and get it right ??
Ok...maybe 2 teeth...
The magnetic impulse gives the ignition the signal to fire so, that has to somehow get re-aligned or move the rotor or cap to match the impulse.
Moving the gear will change the wire location but, not the rotor phasing issue.
True, thats why I said move it a tooth or so...He and I have been discussing this on Book face, so, I may have "short cutted" my response here, by not giving the whole conversation..
QtrWarrior- Posts : 2703
Join date : 2008-12-02
Age : 65
Location : Bloomingdale, Ga
Mark Miller likes this post
Re: popping from exhaust
i had popping on my 521 caused by to rich of a condition as well. i think it may be a combo of bad rotor phaseing and or bad fuel ratio .also the plug gap may be the issue i noticed i had some ngk race plugs open up a huge gap for whatever reason . i know i went from .0027 down to .0023 and seemed to help with igniting the mixture . i have heard alcohol can be harder to light.
i would think tightr quench area like you said you have would help not make it worse.
like randy said maybe get a "adjustable " rotor than you can phase it perfectly .
i would think tightr quench area like you said you have would help not make it worse.
like randy said maybe get a "adjustable " rotor than you can phase it perfectly .
rmcomprandy wrote:QtrWarrior wrote:rmcomprandy wrote:MAYBE ...QtrWarrior wrote:supervel45 wrote:What would it ( The Rotor Position ) look like if you retarded your timing to 26 degree's and moved the #1 plug wire to the pin on the left of the screw (from your picture), along with the rest of the wires with them in the correct firing order?
I may be thinking the direction wrong but, you get what I'm saying.
Why do all that, when you can just move the distrib 1 tooth and get it right ??
Ok...maybe 2 teeth...
The magnetic impulse gives the ignition the signal to fire so, that has to somehow get re-aligned or move the rotor or cap to match the impulse.
Moving the gear will change the wire location but, not the rotor phasing issue.
maverick172- Posts : 205
Join date : 2022-10-16
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