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Intake Manifold exploded #198143 01/19/09 03:10 PM 01/19/09 03:10 PM
Joined: Feb 2007 Posts: 86 Switzerland S swissmopar OP member
swissmopar OP member S Joined: Feb 2007 Posts: 86 Switzerland	Hi, can anyone explain what happened inside my Intake Manifold? What can I do not to get the same a second time? I tried to start my 1965 Hemi Coronet and cranked the engine for 2 seconds - there was a nasty bang - my intake manifold was cracked ... It is a '65 Magnesium Intake, prepped by Dick Landy. Thank you for your help! Karl 4958696-Intake4_small.JPG (254 downloads) Last edited by swissmopar; 01/19/09 03:15 PM.

Re: Intake Manifold exploded [Re: swissmopar] #198144 01/19/09 03:17 PM 01/19/09 03:17 PM
Joined: Feb 2007 Posts: 2,315 MOPAR HEADQUARTERS IN ALDEN NY H hemigod426 top fuel
hemigod426 top fuel H Joined: Feb 2007 Posts: 2,315 MOPAR HEADQUARTERS IN ALDEN NY	one of the carbs was flooding, stuck float ect. a little trick to prevent that again is drill and tap in a relief valve like on supercharger intake, but the smallest lightest spring one you can get, put in back of manifold will never be seen, hope that was not an oe 64/65 cross ram ouch/// MOPAR OR NO CAR

Re: Intake Manifold exploded [Re: hemigod426] #198145 01/19/09 03:20 PM 01/19/09 03:20 PM
Joined: Feb 2007 Posts: 86 Switzerland S swissmopar OP member
swissmopar OP member S Joined: Feb 2007 Posts: 86 Switzerland	Quote: one of the carbs was flooding, stuck float ect. a little trick to prevent that again is drill and tap in a relief valve like on supercharger intake, but the smallest lightest spring one you can get, put in back of manifold will never be seen, hope that was not an oe 64/65 cross ram ouch/// Yes, it was one! 4958707-Intake1_small.JPG (182 downloads)

Re: Intake Manifold exploded [Re: swissmopar] #198146 01/19/09 03:29 PM 01/19/09 03:29 PM
Joined: Jan 2003 Posts: 4,558 Montana F FuryUs master
FuryUs master F Joined: Jan 2003 Posts: 4,558 Montana	Looks like you blew the welds on your intake--must have been too much NAWZ--LOLMAXX!!! Bummer, dude...

Re: Intake Manifold exploded [Re: FuryUs] #198147 01/19/09 03:32 PM 01/19/09 03:32 PM
Joined: Feb 2007 Posts: 86 Switzerland S swissmopar OP member
swissmopar OP member S Joined: Feb 2007 Posts: 86 Switzerland	Quote: Looks like you blew the welds on your intake--must have been too much NAWZ--LOLMAXX!!! Bummer, dude... Need a translation: NAWZ--LOLMAXX?

Re: Intake Manifold exploded [Re: FuryUs] #198148 01/19/09 03:35 PM 01/19/09 03:35 PM
Joined: Jan 2003 Posts: 42,714 Spokane Washington ScottSmith_Harms Mr Wizzard
ScottSmith_Harms Mr Wizzard Joined: Jan 2003 Posts: 42,714 Spokane Washington	Quote: Looks like you blew the welds on your intake--must have been too much NAWZ--LOLMAXX!!! Bummer, dude... Welds? It's magnesium.....That would be a little tricky! As suggested above, once the intake has been repaired/replaced install a pop off valve (a small one installed into one of the intake bolt access plugs works well, add one in 2 different plugs to feel extra safe). This is a common problem with cross ram cars on the street, they don't like all the idling around, even with well setup carbs excess fuel can puddle in the intake when not running at higher rpms and when the fuel gets ignited it goes boom.

Re: Intake Manifold exploded [Re: ScottSmith_Harms] #198149 01/19/09 04:31 PM 01/19/09 04:31 PM
Joined: Jan 2003 Posts: 4,558 Montana F FuryUs master
FuryUs master F Joined: Jan 2003 Posts: 4,558 Montana	Quote: Quote: Looks like you blew the welds on your intake--must have been too much NAWZ--LOLMAXX!!! Bummer, dude... Welds? It's magnesium.....That would be a little tricky! It was a joke. Jeez--don't you guys watch stupid movies. Translations: NAWZ would be super import dork for nitrous oxide. LOLMAXX!!! would be 'laughing out loud a lot'--two X's and three exclamation points more than just LOL. Man, try--just try--to make a stupid joke around here!

Re: Intake Manifold exploded [Re: swissmopar] #198150 01/19/09 04:34 PM 01/19/09 04:34 PM
Joined: Jan 2003 Posts: 31,036 Oregon A AndyF I Win
AndyF I Win A Joined: Jan 2003 Posts: 31,036 Oregon	The factory cross rams tend to do that. They have very poor fuel distribution when cold so a backfire will often cause a small explosion. I had a Max Wedge crossram on my car years ago and it would often backfire during cold weather. It wouldn't start at all if the temp was below 50 degrees. Usually guys keep their foot on the pedal when cranking so that an explosion can go out the carb rather than blowing up the intake. If the throttles were closed then the throttle blades in your carbs might be damaged also. That is a major bummer, that backfire just ruined $$$ in parts for you.

Re: Intake Manifold exploded [Re: AndyF] #198151 01/19/09 05:35 PM 01/19/09 05:35 PM
Joined: Mar 2008 Posts: 5,746 Ontario, Canada Dodgem master
Dodgem master Joined: Mar 2008 Posts: 5,746 Ontario, Canada	Usually guys keep their foot on the pedal when cranking so that an explosion can go out the carb rather than blowing up the intake. If the throttles were closed then the throttle blades in your carbs might be damaged also. That is what I was thinking held wide open backfire would have a relief.

Re: Intake Manifold exploded [Re: FuryUs] #198152 01/19/09 05:54 PM 01/19/09 05:54 PM
Joined: Feb 2005 Posts: 4,884 Michigan MNobody master
MNobody master Joined: Feb 2005 Posts: 4,884 Michigan	Quote: Quote: Quote: Looks like you blew the welds on your intake--must have been too much NAWZ--LOLMAXX!!! Bummer, dude... Welds? It's magnesium.....That would be a little tricky! It was a joke. Jeez--don't you guys watch stupid movies. Translations: NAWZ would be super import dork for nitrous oxide. LOLMAXX!!! would be 'laughing out loud a lot'--two X's and three exclamation points more than just LOL. Man, try--just try--to make a stupid joke around here! Would appear the person is Swiss and didn't understand your smart azzed comment's about something that was not at all funny

Re: Intake Manifold exploded [Re: MNobody] #198153 01/19/09 07:03 PM 01/19/09 07:03 PM
Joined: Jan 2004 Posts: 27,347 Today? Who Knows? 1_WILD_RT Management Trainee
1_WILD_RT Management Trainee Joined: Jan 2004 Posts: 27,347 Today? Who Knows?	FWIW that manifold is fixable, you just need to track down the right guy with the right equiptment...Theres a guy here in town that uses a laser for welding Magnesium, he also has a vacuum chamber for welding titanium...He doesn't work cheap but he can repair stuff that most would give up on...Go to your local welding supply, they would know who local might be qualified..

Re: Intake Manifold exploded [Re: ScottSmith_Harms] #198154 01/23/09 09:49 AM 01/23/09 09:49 AM
Joined: Feb 2007 Posts: 86 Switzerland S swissmopar OP member
swissmopar OP member S Joined: Feb 2007 Posts: 86 Switzerland	Quote: As suggested above, once the intake has been repaired/replaced install a pop off valve (a small one installed into one of the intake bolt access plugs works well, add one in 2 different plugs to feel extra safe). This is a common problem with cross ram cars on the street, they don't like all the idling around, even with well setup carbs excess fuel can puddle in the intake when not running at higher rpms and when the fuel gets ignited it goes boom. @Scott any idea where I can get the proposed pop-off valve which fits into the intake bolt access plugs? Thank you! Karl

Re: Intake Manifold exploded [Re: 1_WILD_RT] #198155 01/23/09 10:21 AM 01/23/09 10:21 AM
Joined: Jun 2008 Posts: 3,916 usa L lewtot184 master
lewtot184 master L Joined: Jun 2008 Posts: 3,916 usa	Quote: FWIW that manifold is fixable, you just need to track down the right guy with the right equiptment...Theres a guy here in town that uses a laser for welding Magnesium, he also has a vacuum chamber for welding titanium...He doesn't work cheap but he can repair stuff that most would give up on...Go to your local welding supply, they would know who local might be qualified.. i used to work in a metal shop that had a guy who TIG welded magnesium.

Re: Intake Manifold exploded [Re: 1_WILD_RT] #198156 01/23/09 10:49 AM 01/23/09 10:49 AM
Joined: Jan 2003 Posts: 42,714 Spokane Washington ScottSmith_Harms Mr Wizzard
ScottSmith_Harms Mr Wizzard Joined: Jan 2003 Posts: 42,714 Spokane Washington	Anyplace that would sell industrial machine supplies for products like air compressors should have them.

Re: Intake Manifold exploded [Re: ScottSmith_Harms] #198157 01/23/09 11:45 AM 01/23/09 11:45 AM
Joined: Mar 2005 Posts: 1,545 Seattle, WA 3 375inStroke Special needs person
375inStroke Special needs person 3 Joined: Mar 2005 Posts: 1,545 Seattle, WA	Volkswagen Bug machine shops weld magnesium engine cases every day. Don't know who would have more experience with magnesium welding.

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