440 Stroker Engine Problems In A 1967 Plymouth Fury
#2775782
05/18/20 03:43 PM
05/18/20 03:43 PM
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SportFuryS/23383
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Hi All, I am wondering if anyone has any tips and or advice for my stepfather for his '67 Fury II with a 440 Stroker engine. The engine was built years ago by a well known high performance Mopar engine builder. We swapped out 3 carburetors and ignition modules and the car now has a Demon carb. We have TTI headers that came with the exhaust kit on it. When the car is cold, it runs like a bat out of hell. It can do burnouts and runs pretty good. But when it gets hot, it does not want to run, and when it's at a stoplight it stalls. mind you We just honed the pistons. My stepfather mostly uses Edelbrock, so the intake got changed from a performer to a regular rpm. Mind you he put an aluminum radiator and electric fans in it too. He did a compression test and checked parts of the engine, and he thinks everything looks fine, everything is new. Since he got so disgusted with it, he just stopped working on it. Now it just sits and collects dust. Since he did a resto, he drove it a little over 200 miles. We took the car out yesterday and it still doing the same thing before we honed the pistons. At this point this stroker engine will be taken out and a stock 440 will be put in, but I figured I would ask you fine folks to see if we can do anything to salvage this engine before we take it out. Here is a picture of the car and a couple of the engine. PLEASE , it would be much appreciated.
Last edited by SportFuryS/23383; 05/18/20 03:44 PM.
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Re: 440 Stroker Engine Problems In A 1967 Plymouth Fury
[Re: SportFuryS/23383]
#2775788
05/18/20 03:46 PM
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The pistons were measured from top to bottom before honing, these were the starting numbers
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Re: 440 Stroker Engine Problems In A 1967 Plymouth Fury
[Re: SportFuryS/23383]
#2775790
05/18/20 03:47 PM
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These were the final numbers, the tool in the picture was used to measure the pistons.....
Last edited by SportFuryS/23383; 05/18/20 03:50 PM.
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Re: 440 Stroker Engine Problems In A 1967 Plymouth Fury
[Re: dOc !]
#2775794
05/18/20 03:51 PM
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The engine builder was well known in Ohio, rather not mention his name but his last name was Mr. Wilson. Now since passed on
Last edited by SportFuryS/23383; 05/18/20 03:52 PM.
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Re: 440 Stroker Engine Problems In A 1967 Plymouth Fury
[Re: SportFuryS/23383]
#2775796
05/18/20 03:54 PM
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These tools were used to measure the inside of the cylinder heads. After measuring the cylinder heads with the tool in the 2nd picture we have these numbers in the 3rd picture.....
Last edited by SportFuryS/23383; 05/18/20 03:56 PM.
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Re: 440 Stroker Engine Problems In A 1967 Plymouth Fury
[Re: AndyF]
#2775800
05/18/20 04:01 PM
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My advice is to pull the engine out and have a good mechanic go thru it. Might be an easy fix once it is all apart. We actually did "call in the big guns", and had a specialist/good friend/Mopar mechanic and guru. He suggested the same thing with honing the pistons, we honed them out, and that unfortunately still did not work.
Last edited by SportFuryS/23383; 05/18/20 04:02 PM.
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Re: 440 Stroker Engine Problems In A 1967 Plymouth Fury
[Re: AndyF]
#2775802
05/18/20 04:02 PM
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fast68plymouth
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It could be 50 things.
Including being something as simple as vapor lock with today’s crappy gas....... if you’re still running a mechanical fuel pump.
Cool car!!
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: 440 Stroker Engine Problems In A 1967 Plymouth Fury
[Re: SportFuryS/23383]
#2775806
05/18/20 04:06 PM
05/18/20 04:06 PM
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ZIPPY
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Love the car.
I'm not sure I understand the question about pistons. Piston manufacturer specifies a specific clearance at a specific measuring point on the part. Typically the clearance is achieved right at the specified bore diameter the pistons were built for.
If you really think the pistons are stuck in the bores......Get it good and hot, put on some welding gloves so you don't burn yourself, pull all the spark plugs out, put a breaker bar on the damper bolt and see how hard it is to turn with a bar.
"it does not want to run, and when it's at a stoplight it stalls"
When that happens, Does the starter work okay, does the engine spin relatively fast when you turn the key? If it does, it's not piston to wall clearance.
It's hard to tell by the pictures, but if there were a major problem with clearance, the pistons would be visibly damaged and it doesn't appear they are (from the little bit that is visible).
Lots of things it could be, ignition, fuel, vapor lock, a ground or connection that goes bad when it's hot, stuff like that.
When he swapped the intake, did he block the heat crossover?
Rich H.
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Re: 440 Stroker Engine Problems In A 1967 Plymouth Fury
[Re: fast68plymouth]
#2775812
05/18/20 04:14 PM
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[quote=fast68plymouth]It could be 50 things.
Including being something as simple as vapor lock with today’s crappy gas....... if you’re still running a mechanical fuel pump.
Cool car!! [/quote
Thank you for the compliment. It acts like it has vapor lock but it has a carburetor spacer on it, and an electric fuel pump to boost the mechanical one and that still did not work.
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Re: 440 Stroker Engine Problems In A 1967 Plymouth Fury
[Re: ZIPPY]
#2775827
05/18/20 04:28 PM
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"it does not want to run, and when it's at a stoplight it stalls"
When that happens, Does the starter work okay, does the engine spin relatively fast when you turn the key? If it does, it's not piston to wall clearance.
It's hard to tell by the pictures, but if there were a major problem with clearance, the pistons would be visibly damaged and it doesn't appear they are (from the little bit that is visible).
The starter works ok yes. As far as the engine sometimes it turns fast, sometimes it does not.
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Re: 440 Stroker Engine Problems In A 1967 Plymouth Fury
[Re: ZIPPY]
#2775828
05/18/20 04:29 PM
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Love the car.
When he swapped the intake, did he block the heat crossover?
The car has 440 source heads and they unfortinatley do not have a crossover
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Re: 440 Stroker Engine Problems In A 1967 Plymouth Fury
[Re: mother hen]
#2775841
05/18/20 04:53 PM
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my first impression was ignition....looks like stock distributor and coil but i see no ballast.....what's inside the distributor?.....12 volts to the coil all the time?....does the coil get extremely hot to the touch? There is indeed a ballast but you can't see it from my picture though, it is mounted elsewhere also. There is not 12 volts inside the distributor that I know of, and I do not recall on the coil being hot. We will check it next time we look at the car.
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Re: 440 Stroker Engine Problems In A 1967 Plymouth Fury
[Re: SportFuryS/23383]
#2775843
05/18/20 04:55 PM
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I had a magnetic pickup do this in a '75 Powerwagon a few years back. It would run fine until it got warmed up and then wouldn't start. Turned over fine, though, just no spark.
'63 Dodge 330 11.19 @ 121 mph Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs. 10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.
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