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2806900 HP '69 manifold #258263 03/18/09 05:13 PM 03/18/09 05:13 PM
Joined: Sep 2003 Posts: 2,966 Wendy, I'm home. dstryr OP master
dstryr OP master Joined: Sep 2003 Posts: 2,966 Wendy, I'm home.	I know these are prone to cracking but do they break into 2 pieces? My pass side manifold will probably be in 2 pieces after a couple more heating/cooling cycles, cracking just forward of the 'y', about where the '2' in the part number is cast. I knew it was cracked to the 'out' side, but then the crack continued to develop and it cooked the valve cover gasket and caused it to leak, a lot. dstryr, since 1986.

Re: 2806900 HP '69 manifold [Re: dstryr] #258264 03/18/09 06:25 PM 03/18/09 06:25 PM
Joined: Apr 2008 Posts: 301 California C court9155 enthusiast
court9155 enthusiast C Joined: Apr 2008 Posts: 301 California	Guy here has a set of HP manifolds with this casting number on one of them for $120. Here is his phone number: 707 843 0031 take it easy 67 charger

Re: 2806900 HP '69 manifold [Re: dstryr] #258265 03/19/09 08:19 AM 03/19/09 08:19 AM
Joined: Jan 2003 Posts: 75,012 U.S.S.A. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 75,012 U.S.S.A.	Frank , I have one that is cracked right in the middle , but didn't crack the flange area , it was packed poorly so I assumed it was broken in shipment by united parcel smashers .

Re: 2806900 HP '69 manifold [Re: JohnRR] #258266 03/19/09 09:13 PM 03/19/09 09:13 PM
Joined: Sep 2003 Posts: 2,966 Wendy, I'm home. dstryr OP master
dstryr OP master Joined: Sep 2003 Posts: 2,966 Wendy, I'm home.	The manifold was cracked when I bought the car and would leak until it heated up. Since this past fall it has been using/leaking more oil and I notice the crack has spread around the bottom and up the inside to where it baked the valve cover gasket, hence the oil leak. Now there is only less than 3/4" left across the top before it is actually a 2-piece assembly. A wad of aluminum foil has done a good job of protecting the new gasket. I just can't take the hood off until I fix it right. dstryr, since 1986.

Re: 2806900 HP '69 manifold [Re: dstryr] #258267 03/20/09 07:52 AM 03/20/09 07:52 AM
Joined: Jan 2003 Posts: 75,012 U.S.S.A. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 75,012 U.S.S.A.	Quote: The manifold was cracked when I bought the car and would leak until it heated up. Since this past fall it has been using/leaking more oil and I notice the crack has spread around the bottom and up the inside to where it baked the valve cover gasket, hence the oil leak. Now there is only less than 3/4" left across the top before it is actually a 2-piece assembly. A wad of aluminum foil has done a good job of protecting the new gasket. I just can't take the hood off until I fix it right. Replace it , check the one you put on first to make sure it's flat across the gasket surface, I haven't found a well seasoned one yet that was. I have all my manifolds planed before use so I'm not bending them tightening them down . The bad is depending on the machine used you will probably need to remove the heat riser assembly .

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