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- 12 Valve Engine and Drivetrain (https://www.dieseltruckresource.com/forums/12-valve-engine-drivetrain-100/)

- - cracked manifold (https://www.dieseltruckresource.com/forums/12-valve-engine-drivetrain-100/cracked-manifold-146932/)

kbailey

04-17-2007 04:59 PM

cracked manifold

I have a significant exhaust leak at the back of cylinder 6. I'm not sure if the manifold is cracked or not but I was wondering where the manifold commonly breaks?

infidel

04-17-2007 06:55 PM

On 12 valves one of the ears at #1 or #6 is were it usually breaks.
24s usually crack in the middle underneath.

satburn

04-17-2007 07:47 PM

http://satburn.com/pictars/crackedear.JPG

Roughly right about exactly there...

Fueling around

04-17-2007 10:59 PM

Quote:

Originally Posted by satburn (Post 1465775)

...
Roughly right about exactly there...

That's the head or the worst damage from a shrinking exhaust manifold.

getblown5.9

04-17-2007 11:05 PM

Quote:

Originally Posted by infidel (Post 1465677)

24s usually crack in the middle underneath.

man if thats not the truth...just changed mine out tonight, big crack in the center underneath.

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