Author Topic: 577 SOHC Post Mortem  (Read 116213 times)

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Barry_R

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Re: 577 SOHC Post Mortem
« Reply #60 on: September 16, 2014, 04:20:43 PM »
Given the volume of rods I sell from numerous manufacturers I have seen lots of mid-beam failed factory rods.  And only one mid-beam failed aftermarket rod - this one.  I really think that beam failures are normally from accumulated cycles over 30-40 years of service - or a material defect.  Jay's issue is the latter - clearly a flaw in the part that is not likely to be repeated.

66FAIRLANE

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Re: 577 SOHC Post Mortem
« Reply #61 on: September 16, 2014, 10:11:46 PM »
Given the situation I wonder if Crower would do a bit of extra QC (Xray, Magnaflux and whatever else they can do) free of charge on a discounted replacement set?

turbohunter

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Re: 577 SOHC Post Mortem
« Reply #62 on: September 16, 2014, 10:19:48 PM »
If it was my stuff that tanked I would.
Marc
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427fordman

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Re: 577 SOHC Post Mortem
« Reply #63 on: September 17, 2014, 06:21:39 PM »
Sorry that happened Jay, but I think you were pushing the limits of those rods maybe a little too far too many times.  I'm not trying to talk bad about what anyone else has said, but that is my opinion.  As was mentioned before, you're not far from the "limits" of those rods when they were new.  5 years later, many hard runs, pretty heavy piston, chit happens I'm afraid.  Be nice if crower would do a little stronger rod for you.  I'm not as much of an oliver fan as I used to be either, so don't know if I'd go that way.

Good luck Jay.  This is all my opinion of course.   ;)

babybolt

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Re: 577 SOHC Post Mortem
« Reply #64 on: September 18, 2014, 07:24:23 PM »
Some comments:

Since the cylinder bores are offset from stock, would the BBC rod offset help center the beam on the piston pin?

Any chance of carefully measuring the rest of the rods to see if they are slightly bent or stretched?

I've tried to do some research on cryogenic  treatments and basically found the old school dry ice treatment is supposed to double the life while a modern profession treatment will double that again.  But I could find no info if it helps on used parts.

fe66comet

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Re: 577 SOHC Post Mortem
« Reply #65 on: September 18, 2014, 09:23:20 PM »
Really if you want to push past parts availability of a engine that was never meant to handle 1000 HP, something is gonna snap. You can build a 385 to go much further than an FE just by design, for an FE you would need a custom billet true 4bolt block with splayed caps and thicker deck. Aluminum billet 7005 aluminum rods, billet forged custom pistons lightened with TI pins. And top it off with a custom billet cromo crank. Then you add the SOHC stuff with monster triple springs and titanium retainers, spring seats, keepers and valves. After all that fill the block and you could get to play with the big boys. Hemi, 385 and 572 Chevys are top dog due to the fact that parts are available to compete at that level.

cjshaker

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Re: 577 SOHC Post Mortem
« Reply #66 on: September 19, 2014, 12:34:21 AM »
Really if you want to push past parts availability of a engine that was never meant to handle 1000 HP, something is gonna snap. You can build a 385 to go much further than an FE just by design, for an FE you would need a custom billet true 4bolt block with splayed caps and thicker deck. Aluminum billet 7005 aluminum rods, billet forged custom pistons lightened with TI pins. And top it off with a custom billet cromo crank. Then you add the SOHC stuff with monster triple springs and titanium retainers, spring seats, keepers and valves. After all that fill the block and you could get to play with the big boys. Hemi, 385 and 572 Chevys are top dog due to the fact that parts are available to compete at that level.

Umm, you might want to tell that to people like Ray Paquet who just won his class in Super Stock at Indy just recently. Or Robert Pond, Dallas Kelly, the Johnsons, John Calvert or a host of others that have been pretty consistently beating those Hemi and BB Chevy guys throughout this and previous years. There are lots of FEs out there running with (and beating) the "big boys".
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ScotiaFE

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Re: 577 SOHC Post Mortem
« Reply #67 on: September 19, 2014, 08:58:03 AM »
Really if you want to push past parts availability of a engine that was never meant to handle 1000 HP, something is gonna snap. You can build a 385 to go much further than an FE just by design, for an FE you would need a custom billet true 4bolt block with splayed caps and thicker deck. Aluminum billet 7005 aluminum rods, billet forged custom pistons lightened with TI pins. And top it off with a custom billet cromo crank. Then you add the SOHC stuff with monster triple springs and titanium retainers, spring seats, keepers and valves. After all that fill the block and you could get to play with the big boys. Hemi, 385 and 572 Chevys are top dog due to the fact that parts are available to compete at that level.

Splay bolting is an attempt to create the effect of cross bolting.
Jay's rod broke because of a bad pour. It broke in two places. One place well hammering against aluminum.
The FE is NOT and I repeat NOT a true big block. It is a medium block that can punch above it's weight.
The bore spacing is to close to compete at 9 litres plus.

TomP

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Re: 577 SOHC Post Mortem
« Reply #68 on: September 22, 2014, 05:11:21 PM »
Uh, Jon... Jay's engine was using the good parts. Nobody runs aluminum rods for the purpose Jay was. Not only would they not likely fit with that stroke but on a 1200 mile street drive you might be leaving some along the road or at one of the tracks. Same deal with a billet block without water jackets, you'd have problems. Even Larry Larson's 3000hp ProLine engine was using a cast block.
http://www.brodix.com/blocks-list/5-0-aluminum-blocks

drdano

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Re: 577 SOHC Post Mortem
« Reply #69 on: September 24, 2014, 12:30:27 PM »
Welding is a comparatively easy deal in Detroit.
You just need to bring your checkbook.
Marcella would weld that one up in a minute...in his sleep.
Razor could do it underwater...blindfolded.

What does welding a typically windowed block run in terms of cost?

jayb

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Re: 577 SOHC Post Mortem
« Reply #70 on: September 24, 2014, 01:09:23 PM »
I'll let you know what it cost me when I get the bill.  By the way, the guy who has the block is going to fix it with a combination of welding and some specialty fasteners called "Lock 'n Stitch" pins.  This will minimize any warpage to the main saddle, hopefully eliminating the need for line boring the block after the repair.  I've actually used those lock n stitch pins before to fix a factory SOHC head that had some cracks in it, and they worked really well...
Jay Brown
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- 1964 Ford Galaxie, Drag Week 2009 Winner Modified NA (9.50s @ 143), 585" SOHC
- 1969 Shelby Clone, Drag Week 2015 Winner Modified NA (Average 8.98 @ 149), 585" SOHC

   

drdano

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Re: 577 SOHC Post Mortem
« Reply #71 on: September 24, 2014, 01:50:35 PM »
Do let me know.  I only ask because I have a friend with a shelby aluminum block that had #3 and #7 rods decide to run away out the side pan rails.  Only reason I've not picked it up yet is because I was unsure after paying to have it fixed I'd be any money ahead of buying a new block.

BruceS

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Re: 577 SOHC Post Mortem
« Reply #72 on: September 24, 2014, 07:12:02 PM »
Jay,
would be good to know more about the Lock n Stitch pins!  A few photos would be educational...

Thanks,
Bruce
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jayb

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Re: 577 SOHC Post Mortem
« Reply #73 on: September 24, 2014, 07:19:51 PM »
Bruce, see their web site below:

http://www.locknstitch.com/
Jay Brown
- 1969 Mach 1, Drag Week 2005 Winner NA/BB, 511" FE (10.60s @ 129); Drag Week 2007 Runner-Up PA/BB, 490" Supercharged FE (9.35 @ 151)
- 1964 Ford Galaxie, Drag Week 2009 Winner Modified NA (9.50s @ 143), 585" SOHC
- 1969 Shelby Clone, Drag Week 2015 Winner Modified NA (Average 8.98 @ 149), 585" SOHC

   

My427stang

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Re: 577 SOHC Post Mortem
« Reply #74 on: September 25, 2014, 06:51:51 AM »
That repair works great if you can get to the whole crack.  I have used it a few of times on cast iron, never on alum though, usually just as easy to have alum welded.  Admittedly I have only needed to repair alum 4 cyl heads though not a scattered SOHC!
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