|
Sponsored Links (Register now to hide all advertisements) |
|
|
Thread Tools | Display Modes |
03-18-2021, 07:09 AM | #21 |
Member
Join Date: Dec 2018
Location: Oakdale, Ca
Posts: 44
|
Re: Center main blowout
I’d suggest taking a file to the corners of the cap and block areas , just the ends to take a possible high spot/ burr off. I do it with all my main caps and block, as well as the rods, even after the rods have been resized.
I have to trust the surfaces being flat, no way I have the equipment to check it. I just use a small fine file, maybe 1/8 inch wide, to put a polish so to speak. It was how I was taught to ensure no cocking of caps when tapped down in place and torqued. May or may not have caused the issue. |
03-18-2021, 04:03 PM | #22 |
Senior Member
Join Date: May 2010
Location: Southern Maine
Posts: 1,498
|
Re: Center main blowout
The center main bolt holes aren't really blind, there is a window in the block where the bolt ends, and I'll bet that bolt would spin out with a reverse drill. These engines are old and nothing lasts forever so bad things will happen no matter who worked on it. If it went for 15 years it was likely put together right.
|
Sponsored Links (Register now to hide all advertisements) |
|
03-18-2021, 04:26 PM | #23 |
Member
Join Date: May 2010
Location: Modesto CA
Posts: 37
|
Re: Center main blowout
I lost a center main cap.the crank also broke in half.that gave me a
reason to buy a Merc. crank. For peace of mind I installed a center main strap. |
03-18-2021, 04:43 PM | #24 |
Senior Member
Join Date: May 2010
Location: (Not far enough...) Outside of DC
Posts: 3,387
|
Re: Center main blowout
Hehe, this is a very honest perspective from Gramps. I'm pretty darn certain I did stuff 15 years ago that was a mistake. Yup. Pretty certain. I tried hard but ...
__________________
-Jeff H Have you thought about supporting the Early Ford V-8 Foundation Museum? |
03-18-2021, 07:26 PM | #25 |
Member
Join Date: Oct 2020
Posts: 73
|
Re: Center main blowout
they make a welding rod called stud rod you can go into a blind hole weld on the bolt it will not stick to the sides we weld on broken bolts all the time with it keep building weld up out of the hole and weld a nut or flat iron on the weld and they turn out has alot of nickel in the rod very strong good luck
|
03-18-2021, 09:23 PM | #26 | |
Senior Member
Join Date: Dec 2013
Location: Minnesota, Florida Keys
Posts: 10,312
|
Re: Center main blowout
Sponsored Links (Register now to hide all advertisements)
Quote:
|
|
03-19-2021, 07:24 AM | #27 |
Senior Member
Join Date: May 2010
Location: Auburn, MA
Posts: 2,106
|
Re: Center main blowout
Ron did not need to step u[ but he did. talk with any engine builder and they have stories about mistakes. Quite a few about the front plug being left out of the oil galley. An old radio guy once told me, the difference between a novice technician and an experienced technician is the experienced one has already burned someone else's equipment. So whether it's engines, radios or marriage there's a lot of mistakes out there. Maybe I should add kids too. :-)
__________________
“The technique of infamy is to start two lies at once and get people arguing heatedly over which is true.” ~ Ezra Pound |
03-19-2021, 10:46 AM | #28 | |
Senior Member
Join Date: May 2010
Location: So Cal
Posts: 8,749
|
Re: Center main blowout
Quote:
X-Tractalloy X-Tractalloy is a special application welding electrode designd for extracting broken bolts, studs and taps from threaded holes.
|
|
03-19-2021, 10:58 AM | #29 |
Member Emeritus
Join Date: Nov 2012
Location: Wichita KS
Posts: 16,132
|
Re: Center main blowout
That's interesting information.
Last edited by JSeery; 03-21-2021 at 01:17 AM. |
03-19-2021, 11:25 AM | #30 |
Senior Member
Join Date: Dec 2013
Location: Minnesota, Florida Keys
Posts: 10,312
|
Re: Center main blowout
Yes it is. https://www.youtube.com/watch?v=L4zohssWS7I
|
03-19-2021, 11:35 AM | #31 |
Senior Member
Join Date: Jan 2011
Location: Central Ohio
Posts: 5,064
|
Re: Center main blowout
Yes - that is really interesting stuff . . . will have to pick some up and give it a whirl. Might help with broken off studs in these dang blocks!
|
03-19-2021, 12:01 PM | #32 |
Senior Member
Join Date: May 2010
Location: on the Littlefield
Posts: 6,158
|
Re: Center main blowout
First I would use the piece of bolt, put it in hole and try to unscrew by hand, I get 80% of bolts broke like that out that easy
I have also use arc welder rod with some tape to center rod to remove bolt down 6" hole A left hand drill sized for easy out-- start drilling, most likely it will remove bolt piece before you get it drilled enough to use easy out |
03-20-2021, 08:31 PM | #33 |
Senior Member
Join Date: May 2010
Location: Santee, California
Posts: 3,505
|
Re: Center main blowout
I don't think a mistake was made. I had the same thing happen to an engine I built. Took two more owners and about 20k miles before the center main cap broke. Notice, it's almost always the center main. These parts are old, and, who mags main caps? Maybe that should be another MUST check to go along with pressure testing.
|
03-20-2021, 09:44 PM | #34 |
Senior Member
Join Date: Dec 2013
Location: Minnesota, Florida Keys
Posts: 10,312
|
Re: Center main blowout
I thought I had an unusual occurrence, but from the posts here, this looks to be more common than I ever thought. Maybe this is why all current V8's use 5 main bearings.
|
03-21-2021, 04:32 AM | #35 |
Senior Member
Join Date: May 2010
Location: Qld, Australia
Posts: 4,215
|
Re: Center main blowout
And the new model A engine
Lawrie |
03-21-2021, 08:36 AM | #36 |
Senior Member
Join Date: May 2010
Location: Capital of Corruption , NY
Posts: 811
|
Re: Center main blowout
|
03-21-2021, 11:39 AM | #37 |
Junior Member
Join Date: Apr 2019
Location: Keizer, Oregon
Posts: 29
|
Re: Center main blowout
|
03-21-2021, 12:28 PM | #38 |
Junior Member
Join Date: Feb 2021
Posts: 9
|
Re: Center main blowout
Update. I cleaned the pan. Buried in the sludge was a washer. So it did not fail because washers were neglected...and it matches the others. The cap just failed. I think Ron did not do anything wrong. The cap failed! Ron sent me caps and I just returned from Ron SanGiovani's and he lent me some as well. Between them, I hope to find a match and return the others. I need to check the length of the bolts after I pull the broken off bolt remainders from the block. I doubt that the bolts were too long.
Thanks for the help guys. Dick Listro |
03-21-2021, 01:39 PM | #39 |
Senior Member
Join Date: Oct 2019
Location: Carthage , Tennessee
Posts: 199
|
Re: Center main blowout
Thank you for posting your findings .
I think you will find it was just a cap failure,,,,seems it happens more than we realize. I’m not blaming anyone,,,,but some were quick to blame it on Ron without any real evidence,,,,and sometimes all anyone really has is their reputation ! So glad to see so many stand up guys here,,,,as well as yourself,,,,it makes you have confidence in your fellow hot rodders . Tommy |
03-21-2021, 04:56 PM | #40 |
Senior Member
Join Date: May 2010
Location: Petaluma, cal.
Posts: 132
|
Re: Center main blowout
After that happened to me I installed a speedway main cap support, figured it couldn't hurt, so far so good. Has anyone else used one of these?
|
|
|
Sponsored Links (Register now to hide all advertisements) |
|