Tryed to start 239 V8
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Freshman User
Joined: Apr 2005
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From: North Carolina
Tryed to start 239 V8
Hello all I tryed to start my 239 Flathead eng for the frist time this last weekend. It was still on the eng stand just wantted to hear it fire up before I put it in My F-4. Jumped the starter off my YJ-Jeep, but couldnt get the starter to turn eng over more than 1/2 rev. even after I took off gen. belt to free up extra drag. Guess I need new Starter. will a set of brushes be enouph?
Senior User
Joined: Oct 2004
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If your engine is on a stand, remove the starter then use the jumper cables on it (out of the engine) to see if it does work or if it is binding up. Most rebuilt starters could use the front and rear bushings to keep the armature from shorting out around the field.
Lead Driver
Joined: Oct 1999
Posts: 6,782
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From: Kalispell, MT
If you're using jumper cables you probably don't have a good enough contact. Connections need to be super solid to make it work. Before you spend money on parts you might not need, make up a temporary starting circuit with your battery, cables and a throw switch. Bolt it up tight and see what happens.
Posting Guru
Joined: Apr 2004
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From: Seattle WA.
Rebuilt engines seldom turn over as fast as they do when broken in. At least in my experence, I have had to push start them at times. like a box of chocolates you never know what your getting.
Postmaster
Joined: Mar 2000
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From: Waynesville, OH
I'm definitely not a motorhead, but I have to agree on the rebuild issue. My rebuilt 272 with a totally rebuilt starter, new battery cables, new battery, etc. barely turned over right after the rebuild. Once I had an hour or so of run time on it, it cranked over easier. After 5 or so hours run time, it starts just fine.
Lead Driver
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From: Kalispell, MT
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Posting Guru
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We used to pull the battery lead off the starter and run 12V into it to get it rolling. Or push the vehicle and pop the clutch.
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Freshman User
Joined: Apr 2005
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From: North Carolina
Well, tryed to start my eng. one more time this weekend.and try to find out why it wont start.
Heres the long story. This eng. 239 flathead was rebuilt by a friend of my brother in law. my brother in law sold me the eng and truck. anyway.the eng. sat around for about two years before I got it.
I took off all the spark plugs and found sevral cyl. had weak compreasion. So I took off the intake manufold and wall-la Grass nuts and sticks packed in the valley.
Now I will take it compleatly apart and clean evarything.
Heres the long story. This eng. 239 flathead was rebuilt by a friend of my brother in law. my brother in law sold me the eng and truck. anyway.the eng. sat around for about two years before I got it.
I took off all the spark plugs and found sevral cyl. had weak compreasion. So I took off the intake manufold and wall-la Grass nuts and sticks packed in the valley.
Now I will take it compleatly apart and clean evarything.
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Freshman User
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From: North Carolina
I called the engine shop today to get an update on my eng. earler when I called 2 weeks ago . I was told the bore just needed a clean up maybe .010in. bore over. Now he says he had to bore .040 over!
I did a quick check and found .030 pistions for $250.ouch.[moderator edit for clarity]
Last edited by Earl; Jul 28, 2005 at 12:57 AM.
Postmaster
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From: Waynesville, OH
[moderator edit for clarity]
I called the engine shop today to get an update on my eng. earler when I called 2 weeks ago . I was told the bore just needed a clean up maybe .010in. bore over. Now he says he had to bore .040 over! I did a quick check and found .030 pistions for $250.ouch.
Mark, I have to admit I get confused easily. 
You had the engine rebuilt and couldn't get it started on the stand because it had rodent stuff in it, is that right? I'm a little confusd about the new piston thing. Are you having it rebuilt a second time after finding the junk inside?
Originally Posted by 48 Ford F4
I called the engine shop today to get an update on my eng. earler when I called 2 weeks ago . I was told the bore just needed a clean up maybe .010in. bore over. Now he says he had to bore .040 over! I did a quick check and found .030 pistions for $250.ouch. You had the engine rebuilt and couldn't get it started on the stand because it had rodent stuff in it, is that right? I'm a little confusd about the new piston thing. Are you having it rebuilt a second time after finding the junk inside?
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Freshman User
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From: North Carolina
Earl, I bought this eng from my brother in law. And was told by him that the person he got it from rebuilt it. I thought all I would need to do was clean it up as it sat out of the truck for two years before I got it. I now found out it was never rebuilt the frist time! shop said bore had .035 in taper in them.
Posting Guru
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From: Seattle WA.
Originally Posted by 48 Ford F4
Earl, I bought this eng from my brother in law. And was told by him that the person he got it from rebuilt it. I thought all I would need to do was clean it up as it sat out of the truck for two years before I got it. I now found out it was never rebuilt the frist time! shop said bore had .035 in taper in them.
Post Fiend
Joined: Sep 2004
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From: Near Fresno, California
If you are bored .40 over, .30 pistons will not help. I am not sure .040 is a standard overbore size, which may make custom built pistons a requirment.
If it hadn't cleaned up a .030, I would have had him go to .060 just so I could use a standard over-bore size piston.
If it hadn't cleaned up a .030, I would have had him go to .060 just so I could use a standard over-bore size piston.