327 block with small crack
Thread Starter
jobberone
Joined: Aug 2003
Posts: 2,062
Likes: 8
From: Kailua Kona HI
327 block with small crack
I need to know if this crack in this 64 block is significant. It's at the rear of the block on the passenger side. It's less than an inch long on a circular boss with an 'insert' in it. It's at 9 oclock on the boss which is at 3 oclock on the back of the block. It appears to be 'old'.
If it's in a load bearing part of the engine and is significant, can it be repaired?
Appreciate any help I can get here. Thanks in advance.
I'm not getting the image to load from photobucket. Here's the url or link to the picture I took: http://s471.photobucket.com/albums/r...t=_DSC0001.jpg
If it's in a load bearing part of the engine and is significant, can it be repaired?
Appreciate any help I can get here. Thanks in advance.
I'm not getting the image to load from photobucket. Here's the url or link to the picture I took: http://s471.photobucket.com/albums/r...t=_DSC0001.jpg
Melting Slicks
Joined: Mar 2008
Posts: 2,666
Likes: 289
From: Spring Park MN
That is the dowel pin hole used to align the bell housing. Unless you are drag racing it, I wouldn't worry too much about it. I would try and get the dowel out to where it will keep you bell housing in alignment while you tighten everything down.
Le Mans Master
Joined: Mar 2001
Posts: 6,640
Likes: 287
From: Ann Arbor Michigan
shouldn't be a problem.Gary
Le Mans Master
Joined: Mar 2001
Posts: 6,640
Likes: 287
From: Ann Arbor Michigan
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Le Mans Master
Joined: Aug 2003
Posts: 7,720
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From: Chattanooga TN
Drifting
Joined: Aug 2004
Posts: 1,883
Likes: 124
From: Lubbock TX
I agree, it's an alignment hole, not critical, but with the right stresses in the right amount, it could grow. Before you drop it in the engine, drill a small hole just past where it looks like the crack ends. The rounded hole will stop the crack before it has a chance to cause trouble.
Le Mans Master
Joined: Dec 2003
Posts: 5,727
Likes: 38
From: Fremont CA
Find a local auto machine shop who has a "Lock n Stitch" repair kit, if you dont fix cracks in cast iron, they only get bigger over time. Other possibility is a powder torch repair, I would at least drill a hole with a drill motor into the end of the crack to keep it from spreading.
Safety Car
Joined: Mar 2007
Posts: 3,652
Likes: 49
From: Bridgewater nj
That's from guys at the machine shop spinning the Block on the concrete floor with the dowel pins in. I would try drilling a hole at the base of the crack if your not going to have it fix. Just a precaution to keep the crack from growing
Shouldn't be a problem...
Shouldn't be a problem...
Safety Car
Joined: Oct 1999
Posts: 4,101
Likes: 10
From: NorCal
I agree that it will not be a problem. However, the dowel should stick out about a half inch, not flush as shown in your picture. It's important that the bellhousing line up correctly with the block to avoid vibration and/or seal issues, depending on what trans you run.
Hans
Hans
Burning Brakes
Joined: Jun 2008
Posts: 1,086
Likes: 1
From: Michigan
I agree, it's an alignment hole, not critical, but with the right stresses in the right amount, it could grow. Before you drop it in the engine, drill a small hole just past where it looks like the crack ends. The rounded hole will stop the crack before it has a chance to cause trouble.
