Author Topic: COBRA Scatter shield bell housing 289 302 SBF - $1600  (Read 1731 times)

6s1640

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COBRA Scatter shield bell housing 289 302 SBF - $1600
« on: March 17, 2018, 12:01:24 AM »
Hi all,

This is a used 6 bolt COBRA scatter shield or bell housing for a small block Ford 289 302. This housing has been verified to be within the tolerance for aligning to the crank with a dial indicator. With any performance engine build, this housing, or for that matter any housing, should be dialed into your specific block. It is ready to go. $1600 OBO plus the ride.  Thanks

Sold

Cory
« Last Edit: April 12, 2018, 08:30:44 PM by 6s1640 »

CSX2075

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Re: COBRA Scatter shield bell housing 289 302 SBF - $1600
« Reply #1 on: March 18, 2018, 04:07:42 PM »
Hi Cory,
is your scatter shield a NOS part or used?
Cheers
Tom

6s1640

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Re: COBRA Scatter shield bell housing 289 302 SBF - $1600
« Reply #2 on: March 18, 2018, 10:34:32 PM »
Hi Tom,

As far as I know it is used, but it has been kicking around for years, hard to really say for sure.  I did not ask the seller when I purchased years ago.   There is no damage or ware other than the nicks in the paint.  It is safer to say it is used.

Thanks for the question.

Cory

CSX2075

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Re: COBRA Scatter shield bell housing 289 302 SBF - $1600
« Reply #3 on: March 19, 2018, 02:10:42 AM »
Hi Cory,
has the unit been measured to make sure it is parallel to the rear of the engine and the transmission mounting hole pattern are centered on the crankshaft center line?
Tom

6s1640

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Re: COBRA Scatter shield bell housing 289 302 SBF - $1600
« Reply #4 on: March 19, 2018, 02:30:47 AM »
Hi Tom,

It has been measured for center to center alignment and is within tolerance.   I'd need to research how to measure parallel.  If it were not parallel, I'd think the center to center would be way off.  I will look around the internet and see what I can find to measure and/or consult some experts here on the forum.

The block the scatter shield was measured against had an offset of .011.  The Ford maintenance manual shows a max misalignment of .014.  For this pairing, I'd recommend a .014 for dowel pin offset, which should bring the alignment to near .003. The offset pins come in .007, .014 and .021 inch.  For performance applications,  I have read the recommended max misalignment to be less than or equal to .005 inches.  This offset pin would make in less.  But every block is different, so that is why I recommend it would need to be dial in to the block and crank it is being paired with to minimize the offset.

I will get back to you.

Thanks

Cory

6s1640

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Re: COBRA Scatter shield bell housing 289 302 SBF - $1600
« Reply #5 on: March 24, 2018, 12:31:11 AM »
Hi all,

Correction.  I found my notes on this scatter shield.  The offset is closer to .0083 inches such that a .007 offset dowel pin would bring to within .0013 inches, just about perfect.  However, this was with my block.  As recommended earlier, it should be dial indicated to your applications because each block is slightly different.  See below sketch of my notes for further information.

See attached video on indicating a bell housing:  https://www.youtube.com/watch?v=vO9f4FhK13U

When watching the video, be careful with the numbers and remember that twice the radius is diameter or half diameter is radius.  To correct a diameter difference, the center only has to shift half the distance. 

Last, still working to measure parallel.

Thanks

Cory



« Last Edit: March 24, 2018, 12:34:17 AM by 6s1640 »

CSX2075

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Re: COBRA Scatter shield bell housing 289 302 SBF - $1600
« Reply #6 on: March 27, 2018, 12:55:06 PM »
Hi Cory,

is your scatter shield an original part or one of the reproductions after the first original 6 bolt series?

Thanks
Tom