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Author
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Topic: cracked block
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Dad Vishus
Gearhead Posts: 856
From: Moscow, Iowa, USA
Registered: Dec 2001
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posted 04-18-2005 08:52 PM
   
Doing a freshen up on the Cleveland for this year (late, unfortunately) we found a substantial crack in the block.It starts at the oil hole in the 4th main and angles up into the cylinder walls on both sides. Also the thrust bearing main was worn into the copper all the way around and none of the other mains were worn like that. Fortunately I had another 4 bolt main block that was .020 over so we are filling it and having it bored out to .030. My concern is what caused this and how long before its likely to do this again. BTW, the crank is an internally balanced Crower piece. Any thoughts?  ------------------
63 Falcon 377 Cleveland stroker Flying Toilet alchohol injection. 6.19 @ 110 MPH 1/8 mile
2002 Ranger FX4 daily driver
2000 F350 PSD Crew cab dually - Like commuting in a B52!!
98 US Cargo Phantom II 28'
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Moneymaker
Administrator Posts: 26513
From: Lyons, IL, USA
Registered: May 99
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posted 04-19-2005 02:09 PM
It seems as if the converter clearance may be too tight Tom causing too much load on the thrust.
I would be looking at the adapter/bell housing indication/line up on the powerslide set up.------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,'04 &'05
First NHRA & IHRA 289 automatic Superstock Mustang in the TENS 06-99
First SS/MA in the TENS 04-03
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
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Dad Vishus
Gearhead Posts: 856
From: Moscow, Iowa, USA
Registered: Dec 2001
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posted 04-19-2005 04:07 PM
Alex,The thrust surfaces were not worn, just the inside of that main bearing. Would that still indicate a convertor clearance problem? Its a JW ultrabell. The crack ran up one side of the block and about halfway up the cylinder walls on both adjacent cylinders. I don't think I made that very clear. ------------------
63 Falcon 377 Cleveland stroker Flying Toilet alchohol injection. 6.19 @ 110 MPH 1/8 mile
2002 Ranger FX4 daily driver
2000 F350 PSD Crew cab dually - Like commuting in a B52!!
98 US Cargo Phantom II 28'
IP: Logged |
Moneymaker
Administrator Posts: 26513
From: Lyons, IL, USA
Registered: May 99
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posted 04-19-2005 04:52 PM
The block side or the crank side of the bearing is worn?------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,'04 &'05
First NHRA & IHRA 289 automatic Superstock Mustang in the TENS 06-99
First SS/MA in the TENS 04-03
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
IP: Logged |
Dad Vishus
Gearhead Posts: 856
From: Moscow, Iowa, USA
Registered: Dec 2001
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posted 04-19-2005 05:32 PM
All 360 degrees is worn into the copper.This is only on the thrust main. The rest of the mains looked good. And the broken web is the next one back from the thrust main. ------------------
63 Falcon 377 Cleveland stroker Flying Toilet alchohol injection. 6.19 @ 110 MPH 1/8 mile
2002 Ranger FX4 daily driver
2000 F350 PSD Crew cab dually - Like commuting in a B52!!
98 US Cargo Phantom II 28'
IP: Logged |
Moneymaker
Administrator Posts: 26513
From: Lyons, IL, USA
Registered: May 99
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posted 04-19-2005 06:30 PM
You had a align bore problem and the thrust cap did not fit straight.
When it was torqued, it either cocked causing undue stress or it was too tight.------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,'04 &'05
First NHRA & IHRA 289 automatic Superstock Mustang in the TENS 06-99
First SS/MA in the TENS 04-03
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
IP: Logged |
Dad Vishus
Gearhead Posts: 856
From: Moscow, Iowa, USA
Registered: Dec 2001
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posted 04-19-2005 08:04 PM
Could be, I suspect.Steve had main studs in the motor which I'm not sure are necessary on a 4 bolt Cleveland. I'll ask if the shop will be checking the align bore on the mains. A different block should take care of it, I hope. That block had been used for many seasons and completely freshened every year till I got it. It had roughly 250 passes on it. Guess I'm paying for not freshening it now. ------------------
63 Falcon 377 Cleveland stroker Flying Toilet alchohol injection. 6.19 @ 110 MPH 1/8 mile
2002 Ranger FX4 daily driver
2000 F350 PSD Crew cab dually - Like commuting in a B52!!
98 US Cargo Phantom II 28'
IP: Logged |
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