Re: 440 Stroker Engine Problems In A 1967 Plymouth Fury
[Re: JD Dart]
#2775964
05/18/20 09:14 PM
05/18/20 09:14 PM
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Joined: Jun 2006
Posts: 5,163 CT
GTX MATT
master
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master
Joined: Jun 2006
Posts: 5,163
CT
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SOUNDS LIKE VAPOR LOCK. Modern fuel evaporates EXTREMELY easy, and the mechanical pump puts it under a vacuum. You likely have 3 PSI fuel pressure or less once its hot as soon as you open the throttle. What kind of electric pusher, and where is it mounted? Is there a filter anywhere before the mechanical pump?
You really need to measure the pressure with a gauge. My car on fuel pretty local to you would drop to 3 psi as soon as you cracked the throttle once hot. It was an animal cold. I spent a long time chasing my tail between the fuel pressure and crappy Thrush mufflers with a combo that should have made 500 HP easily until I mounted a gauge on the cowl. Once both of these were fixed it will bury your head into the head rest when it gets traction in 1st or 2nd gear (rare now, only on slicks). The car didn't nose over, or act like it suddenly ran out of fuel. In fact it didn't really seem like it was vapor locking, except for the fact that sometimes when really heat soaked it would act like it wanted to stall.
Can you get it to run at all when its hot and dies? Does it crank normal? What temperature does it run at?
You can run a compression test cold, then run it warm. If the engine cranks easy and compression is the same or higher it has nothing to do with piston to wall clearance or ring seal.
You should verify timing, but that's not your problem. Maybe the coil, or pertronix unit if you are running that.
If Nick built that engine I really doubt there was an issue with PTW. If anything mechanical I would suspect it might have an intake sealing issue that starts leaking once hot. You had the engine part to hone it but did not check the lash when you put the valve train back together? Check the lash, is it a solid cam or hydro?
Last edited by GTX MATT; 05/18/20 09:41 PM.
Now I need to pin those needles, got to feel that heat Hear my motor screamin while I'm tearin up the street
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Re: 440 Stroker Engine Problems In A 1967 Plymouth Fury
[Re: 65Fury440]
#2777099
05/22/20 03:55 PM
05/22/20 03:55 PM
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Joined: Apr 2020
Posts: 555 Berlin, CT
SportFuryS/23383
OP
Confused
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OP
Confused
Joined: Apr 2020
Posts: 555
Berlin, CT
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Hi everyone,
I got an update on our '67 440 stroker Fury. Yesterday we did a crank test where we put a breaker bar on the damper bolt that holds the damper to the crank (like Mr. Zippy suggested). We cranked the bolt before we started the engine and let it get hot, then we ran the engine until it was warm at operating temp then shut the car off then cranked the bolt again. We cranked the bolt 3 times and it turned about the same each time when it was cold and hot. The car ran great as always until it got up to operating temperature then started misfiring or shaking, we let it run and when it got hot the electric fans came on to cool the engine as they were supposed to twice maybe 3 times. Our Mopar friend/mechanic/guru I beleive saw this posting and called my stepfather about the car. My stepfather talked the problems over with him and another friend, and they both say to check the valves because it might be a tight valve guide problem as they were common with 440 source heads. So the next plan of action is to put a 4th distributor in that is built to spec for a 440 Super Commando, then go check the valve guide. Stay tuned. Here are some pictures of what we did yesterday, below is the ballast resistor and the last blurry temperature picture is when it started misfiring and when we shut it off .We started it up after we shut it off 3 times and it started all 3 times with minimal issue.....
If You Ask Me This Whole World Has Gone To Hell- Creed Fisher Proud Supporter Of LGBT (Liberty Guns Beer & Trump)
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Re: 440 Stroker Engine Problems In A 1967 Plymouth Fury
[Re: SportFuryS/23383]
#2777100
05/22/20 03:57 PM
05/22/20 03:57 PM
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Joined: Apr 2020
Posts: 555 Berlin, CT
SportFuryS/23383
OP
Confused
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OP
Confused
Joined: Apr 2020
Posts: 555
Berlin, CT
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Last photos, the last blurry temperature picture is when it started misfiring and when we shut it off .We started it up after we shut it off 3 times and it started all 3 times with minimal issue.....
If You Ask Me This Whole World Has Gone To Hell- Creed Fisher Proud Supporter Of LGBT (Liberty Guns Beer & Trump)
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Re: 440 Stroker Engine Problems In A 1967 Plymouth Fury
[Re: SportFuryS/23383]
#2778321
05/26/20 12:16 PM
05/26/20 12:16 PM
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Joined: Feb 2014
Posts: 1,709 central il.
second 70
top fuel
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top fuel
Joined: Feb 2014
Posts: 1,709
central il.
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Hi everyone,
I got an update on our '67 440 stroker Fury. Yesterday we did a crank test where we put a breaker bar on the damper bolt that holds the damper to the crank (like Mr. Zippy suggested). We cranked the bolt before we started the engine and let it get hot, then we ran the engine until it was warm at operating temp then shut the car off then cranked the bolt again. We cranked the bolt 3 times and it turned about the same each time when it was cold and hot. The car ran great as always until it got up to operating temperature then started misfiring or shaking, we let it run and when it got hot the electric fans came on to cool the engine as they were supposed to twice maybe 3 times. Our Mopar friend/mechanic/guru I beleive saw this posting and called my stepfather about the car. My stepfather talked the problems over with him and another friend, and they both say to check the valves because it might be a tight valve guide problem as they were common with 440 source heads. So the next plan of action is to put a 4th distributor in that is built to spec for a 440 Super Commando, then go check the valve guide. Stay tuned. Here are some pictures of what we did yesterday, below is the ballast resistor and the last blurry temperature picture is when it started misfiring and when we shut it off .We started it up after we shut it off 3 times and it started all 3 times with minimal issue..... I had a coil like that that got hot and caused the engine to quit.
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Re: 440 Stroker Engine Problems In A 1967 Plymouth Fury
[Re: second 70]
#2778450
05/26/20 06:21 PM
05/26/20 06:21 PM
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Joined: Feb 2008
Posts: 715 Central TEXAS!!!!
sr4440
super stock
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super stock
Joined: Feb 2008
Posts: 715
Central TEXAS!!!!
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Hi everyone,
I got an update on our '67 440 stroker Fury. Yesterday we did a crank test where we put a breaker bar on the damper bolt that holds the damper to the crank (like Mr. Zippy suggested). We cranked the bolt before we started the engine and let it get hot, then we ran the engine until it was warm at operating temp then shut the car off then cranked the bolt again. We cranked the bolt 3 times and it turned about the same each time when it was cold and hot. The car ran great as always until it got up to operating temperature then started misfiring or shaking, we let it run and when it got hot the electric fans came on to cool the engine as they were supposed to twice maybe 3 times. Our Mopar friend/mechanic/guru I beleive saw this posting and called my stepfather about the car. My stepfather talked the problems over with him and another friend, and they both say to check the valves because it might be a tight valve guide problem as they were common with 440 source heads. So the next plan of action is to put a 4th distributor in that is built to spec for a 440 Super Commando, then go check the valve guide. Stay tuned. Here are some pictures of what we did yesterday, below is the ballast resistor and the last blurry temperature picture is when it started misfiring and when we shut it off .We started it up after we shut it off 3 times and it started all 3 times with minimal issue..... I had a coil like that that got hot and caused the engine to quit. Now that i seen pictures of your car, let me update my post from 8 days ago, CHANGE THE COIL! at the very least check the resistance cold and hot. Joe
Without Data, you’re just another guy with an opinion.
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Re: 440 Stroker Engine Problems In A 1967 Plymouth Fury
[Re: sr4440]
#2778524
05/26/20 09:27 PM
05/26/20 09:27 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Are you running a electronic dist... I had the pick up coil in the dist do that many times at a shop that I worked at
Last edited by MR_P_BODY; 05/26/20 09:28 PM.
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Re: 440 Stroker Engine Problems In A 1967 Plymouth Fury
[Re: sr4440]
#2778615
05/27/20 09:22 AM
05/27/20 09:22 AM
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Joined: Apr 2020
Posts: 555 Berlin, CT
SportFuryS/23383
OP
Confused
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OP
Confused
Joined: Apr 2020
Posts: 555
Berlin, CT
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[/quote]
Now that i seen pictures of your car, let me update my post from 8 days ago, CHANGE THE COIL!
Joe [/quote]
It was swapped out already for another one and did the same thing it has been doing
If You Ask Me This Whole World Has Gone To Hell- Creed Fisher Proud Supporter Of LGBT (Liberty Guns Beer & Trump)
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Re: 440 Stroker Engine Problems In A 1967 Plymouth Fury
[Re: MR_P_BODY]
#2778617
05/27/20 09:25 AM
05/27/20 09:25 AM
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Joined: Apr 2020
Posts: 555 Berlin, CT
SportFuryS/23383
OP
Confused
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OP
Confused
Joined: Apr 2020
Posts: 555
Berlin, CT
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Are you running a electronic dist... I had the pick up coil in the dist do that many times at a shop that I worked at Yes we are running an electronic distributor. We have another distributor built to 440 Commando specs that we bought, so we are going to try to see if it fixes the problem
If You Ask Me This Whole World Has Gone To Hell- Creed Fisher Proud Supporter Of LGBT (Liberty Guns Beer & Trump)
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Re: 440 Stroker Engine Problems In A 1967 Plymouth Fury
[Re: MR_P_BODY]
#2778619
05/27/20 09:25 AM
05/27/20 09:25 AM
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Joined: Mar 2006
Posts: 9,858 MI, usa
dvw
master
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master
Joined: Mar 2006
Posts: 9,858
MI, usa
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I've read this entire post. Questions. Have you ever pulled the coil wire and checked for spark hot ? I dont see this question answered. Have you ever squirted fuel in the bowl and tried to start? I dont see that answered either. Have you pulled a plug and tested compression hot? If the valves were sticking open hot this test would confirm lack of compression hot vs cold. The engine only needs a few parameters to run. Compression with correct valve timing. If the valve timing was incorrect it would never run. It needs correctly timed spark. And it needs a burnable air fuel mixture. The only other possible item would be restricted exhaust such as a plugged catalytic converter. Since I'm assuming that it has no converters I would say this is unlikely. Also assuming the engine cranks with reasonable speed hot. That leaves 15 minutes worth of tests above to determine why it wont start hot. After determining if its , spark, fuel/air, or compression. The real diagnosis will begin. Think simple first. Doug
Last edited by dvw; 05/27/20 09:47 AM.
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Re: 440 Stroker Engine Problems In A 1967 Plymouth Fury
[Re: dvw]
#2779627
05/29/20 09:38 PM
05/29/20 09:38 PM
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Joined: Apr 2020
Posts: 555 Berlin, CT
SportFuryS/23383
OP
Confused
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OP
Confused
Joined: Apr 2020
Posts: 555
Berlin, CT
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Hi Everyone,
I got a little update on the '67 Fury stroker 440 project. This evening we put in another distributor, this one a built to spec 440 Commando and not a performance one. It did help a bit, as it has a less advanced curve than the Mopar Performance one that was on the car. We also took the timing with a timing gun before and after we swapped the distributors before starting the car and letting it run, which was the same both times. About 10 degrees. It ran a little better with the new distributor, seemed like a little longer also. We let it run about 15-20 minutes after swapping distributors and got it to operating temperature, put it in gear, and it did die but it also did start back up right after with no issues. Otherwise that was mainly all we did for the evening with it. Unless someone has any other opinions, at this point we are suspecting tight valve guides and we will check them next time we work on the car. The first 2 pictures are of the "old" distributor, 3rd picture is the new distributor in the box before we put it in.
If You Ask Me This Whole World Has Gone To Hell- Creed Fisher Proud Supporter Of LGBT (Liberty Guns Beer & Trump)
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Re: 440 Stroker Engine Problems In A 1967 Plymouth Fury
[Re: SportFuryS/23383]
#2779747
05/30/20 01:11 PM
05/30/20 01:11 PM
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Joined: Aug 2003
Posts: 43,230 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,230
Bend,OR USA
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tight valve guides will tear the guides and valve stems up and open up to more clearances than you need, or they will seize the valve and bend them You have another tuning issue or issues I wish I was closer so I could drive it to help you and your Dad. Sometimes the littlest thing will drive you crazy finding and fixing it Don't give up :tsk Keep working on it, you guys can fix it
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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