The Ford Barn

tinkirk · 08-12-2016, 03:36 PM

they sell cast plugs I believe in a kit form to repair such things, find a machine shop and see what they can do with it

Mitch//pa · 08-12-2016, 04:13 PM

Hooray that was a fun adventure.. Glad you finally found it

harleytoprock · 08-12-2016, 04:31 PM

I guess I nailed it in post #7. LOL. Did I win anyhing? LOL
I'm glad you can sleep better tonight. Best wishes on the repair.

Mitch//pa · 08-12-2016, 05:08 PM

Quote:

Originally Posted by harleytoprock

I guess I nailed it in post #7. LOL. Did I win anyhing? LOL
I'm glad you can sleep better tonight. Best wishes on the repair.

Yes u did,, it's the same thing u got when you became a senior member at 100 posts...

Tom Wesenberg · 08-12-2016, 06:27 PM

Now, what make it crack?

Be sure to throw your torque wrench in the drawer, and just use common sense.

If you use the steel rings, make sure the recess is deep enough so the gasket is tight before the rings are tight.

zzlegend · 08-12-2016, 07:24 PM

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Quote:

Originally Posted by harleytoprock

I guess I nailed it in post #7. LOL. Did I win anyhing? LOL
I'm glad you can sleep better tonight. Best wishes on the repair.

Depends???????????????????????????????

harleytoprock · 08-12-2016, 07:30 PM

Quote:

Originally Posted by zzlegend

Depends???????????????????????????????

I'm so old, I don't buy green bananas. But I don't need depends yet.

tbirdtbird · 08-12-2016, 08:16 PM

a very interesting development indeed. Never saw a manifold crack there

Flathead · 08-12-2016, 10:31 PM

Over tightened and cracked. I have seen it with aluminum "Hot Rod" A intakes.

Mike V. Florida · 08-12-2016, 11:40 PM

So glad it is solved!

Tom Wesenberg · 08-13-2016, 05:06 AM

Quote:

Originally Posted by Bob Johnson

Tom you were right. I sprayed starter fluid around the intake and I got a speedup. I found a crack in the intake manifold. This did not show up with my first leak test because I was only looking at the gasket, my bad. Now I have to find another B manifold, open up an A manifold, just use an A manifold or ....

Bob

The picture has me wondering about the counterbore for the steel ring.
Did someone use a thin ring to fill in the counterbore?

Bob Johnson · 08-13-2016, 05:00 PM

Tom that is the B intake manifold. I do not think they had counter bores. What you see is the impression made by the steel part of the gasket.

Bob Johnson · 08-13-2016, 05:24 PM

I just finished resurfacing the old exhaust manifold with a spare A intake manifold. It took some time to get it lined up on the mill because the exhaust manifold was warped. I squared it on the mill using the middle two exhaust ports as a reference because they seem to be close to level. I had to remove 0.020" from the end exhaust ports. And there was a 0.010" difference in the top and bottom of the end ports. This is likely the reason for the crack in the intake when I torqued it down. Yes I should have checked the manifolds before I installed them but it was a pair that just came off an engine. They had been resurfaced a couple of years ago so I assumed they were OK. Bad assumption. A guy in the local club has a setup to bore the A intake to B size. I am going to ask him to bore it out for me. Then cross fingers and slap it all back together.

Bob

Tom Wesenberg · 08-13-2016, 09:01 PM

I've heard B blocks are prone to crack due to thin castings.
I wonder if your B intake was also thin and cracked easier due to thin castings?

Tom Foster · 08-13-2016, 11:21 PM

Here's a thought. We had a club member repair a water jacket crack in a B block was JB Weld and steel wool. Drove the car to Alaska and back that way. The intake manifold would be hot but not carrying combustion gases. Might be something to try, if you don't want the A manifold.

Bob Johnson · 08-13-2016, 11:47 PM

The crack is on one of the ears. I do not think JB weld would be able to take the torque.

But thanks for the suggestion.

Bob

Mike V. Florida · 08-14-2016, 12:16 AM

Quote:

Originally Posted by Bob Johnson

The crack is on one of the ears. I do not think JB weld would be able to take the torque.

But tanks for the suggestion.

Bob

Brazing as an experiment to see if it works?

Tom Foster · 08-14-2016, 12:32 PM

Quote:

Originally Posted by Bob Johnson

The crack is on one of the ears. I do not think JB weld would be able to take the torque.

But thanks for the suggestion.

Bob

Oops. From the picture I thought it was in the flow passage. You're right about the ears not being able to hold.

08-12-2016, 03:36 PM	#61
tinkirk Senior Member Join Date: Jul 2015 Location: SouthWest Michigan Posts: 363	Re: Engine power they sell cast plugs I believe in a kit form to repair such things, find a machine shop and see what they can do with it

08-12-2016, 04:13 PM	#62
Mitch//pa BANNED Join Date: May 2010 Location: Bucks County, PA Posts: 11,454	Re: Engine power Hooray that was a fun adventure.. Glad you finally found it

08-12-2016, 04:31 PM	#63
harleytoprock Senior Member Join Date: Aug 2014 Posts: 438	Re: Engine power I guess I nailed it in post #7. LOL. Did I win anyhing? LOL I'm glad you can sleep better tonight. Best wishes on the repair.

08-12-2016, 06:27 PM	#65
Tom Wesenberg Senior Member Join Date: May 2010 Location: Mpls, MN Posts: 27,582	Re: Engine power Now, what make it crack? Be sure to throw your torque wrench in the drawer, and just use common sense. If you use the steel rings, make sure the recess is deep enough so the gasket is tight before the rings are tight.

08-12-2016, 08:16 PM	#68
tbirdtbird BANNED Join Date: May 2012 Location: inside your RAM Posts: 3,134	Re: Engine power a very interesting development indeed. Never saw a manifold crack there __________________ '31 180A

08-12-2016, 10:31 PM	#69
Flathead Senior Member Join Date: May 2010 Location: Southern Maine Posts: 1,498	Re: Engine power Over tightened and cracked. I have seen it with aluminum "Hot Rod" A intakes.

08-12-2016, 11:40 PM	#70
Mike V. Florida Senior Member Join Date: May 2010 Location: South Florida Posts: 14,054	Re: Engine power So glad it is solved! __________________ What's right about America is that although we have a mess of problems, we have great capacity - intellect and resources - to do some thing about them. - Henry Ford II

08-13-2016, 05:00 PM	#72
Bob Johnson Senior Member Join Date: May 2010 Location: California Posts: 979	Re: Engine power Tom that is the B intake manifold. I do not think they had counter bores. What you see is the impression made by the steel part of the gasket. Last edited by Bob Johnson; 08-13-2016 at 05:07 PM. Reason: grammar

08-13-2016, 05:24 PM	#73
Bob Johnson Senior Member Join Date: May 2010 Location: California Posts: 979	Re: Engine power I just finished resurfacing the old exhaust manifold with a spare A intake manifold. It took some time to get it lined up on the mill because the exhaust manifold was warped. I squared it on the mill using the middle two exhaust ports as a reference because they seem to be close to level. I had to remove 0.020" from the end exhaust ports. And there was a 0.010" difference in the top and bottom of the end ports. This is likely the reason for the crack in the intake when I torqued it down. Yes I should have checked the manifolds before I installed them but it was a pair that just came off an engine. They had been resurfaced a couple of years ago so I assumed they were OK. Bad assumption. A guy in the local club has a setup to bore the A intake to B size. I am going to ask him to bore it out for me. Then cross fingers and slap it all back together. Bob

08-13-2016, 09:01 PM	#74
Tom Wesenberg Senior Member Join Date: May 2010 Location: Mpls, MN Posts: 27,582	Re: Engine power I've heard B blocks are prone to crack due to thin castings. I wonder if your B intake was also thin and cracked easier due to thin castings?

08-13-2016, 11:21 PM	#75
Tom Foster Senior Member Join Date: May 2010 Location: San Antonio, Texas Posts: 160	Re: Engine power Here's a thought. We had a club member repair a water jacket crack in a B block was JB Weld and steel wool. Drove the car to Alaska and back that way. The intake manifold would be hot but not carrying combustion gases. Might be something to try, if you don't want the A manifold.

08-13-2016, 11:47 PM	#76
Bob Johnson Senior Member Join Date: May 2010 Location: California Posts: 979	Re: Engine power The crack is on one of the ears. I do not think JB weld would be able to take the torque. But thanks for the suggestion. Bob Last edited by Bob Johnson; 08-14-2016 at 12:14 PM. Reason: spelling