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problems with mp aluminum hemi heads //valve seats #254194 03/15/09 11:14 AM 03/15/09 11:14 AM
Joined: May 2005 Posts: 176 New Jersey C conteycp OP member
conteycp OP member C Joined: May 2005 Posts: 176 New Jersey	I am buliding a 528 aluminum street hemi engine and have heard from my engine shop that in the past they had a experiance with mopar perfomance heads valve seat fall out . Dose any one have any recent experiance with this problem ? is it just a certain batch of heads ? dose anyonre know had to identify these heads ? How long ago did you get the heads that had a problem and do you have any idea of how long they sat on the shelf? thanks to all Steve 5094212-incomplete1968%20Charger%20on%20assembly%20line.jpg (57 downloads)

Re: problems with mp aluminum hemi heads //valve seats [Re: conteycp] #254195 03/15/09 11:56 AM 03/15/09 11:56 AM
Joined: Jan 2003 Posts: 16,376 D dogdays I Live Here
dogdays I Live Here D Joined: Jan 2003 Posts: 16,376	Any time I see the words "I heard" or "My friend/machine shop/girlfriend's brother says" I get suspicious. As to this question I don't believe I've heard of such a thing. Also there have been at least three foundries involved in making heads. So upon which head from which foundry is the old wives' tale based? R.

Re: problems with mp aluminum hemi heads //valve seats [Re: dogdays] #254196 03/15/09 12:10 PM 03/15/09 12:10 PM
Joined: Jan 2003 Posts: 2,431 USA S SSAAHemiFan top fuel
SSAAHemiFan top fuel S Joined: Jan 2003 Posts: 2,431 USA	Try calling Barton and see if he can help ID the bad run(. If possible). This is a known problem. There was a run of bad heads by one of the previous vendors. Haven't heard anything bad about the current heads. If you can't ID them and you want to use them anyway you can replace the seats in yours. The machining and the fit of the seats were a issue.

Re: problems with mp aluminum hemi heads //valve seats [Re: dogdays] #254197 03/15/09 12:31 PM 03/15/09 12:31 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?	The member with the Orange 71 Charger 440-6 & the Silver 69 (?) HemiCharger lost his motor to exactly that...& He is from New Jersey so the machine shop may have worked on his stuff..

Re: problems with mp aluminum hemi heads //valve seats [Re: 1_WILD_RT] #254198 03/15/09 01:37 PM 03/15/09 01:37 PM
Joined: Jan 2003 Posts: 20,179 Park Forest, IL slantzilla Too Many Posts
slantzilla Too Many Posts Joined: Jan 2003 Posts: 20,179 Park Forest, IL	Quote: The member with the Orange 71 Charger 440-6 & the Silver 69 (?) HemiCharger lost his motor to exactly that...& He is from New Jersey so the machine shop may have worked on his stuff.. That's the first guy I thought of when I saw the title on the thread. "Everybody funny, now you funny too."

Re: problems with mp aluminum hemi heads //valve seats [Re: slantzilla] #254199 03/15/09 02:00 PM 03/15/09 02:00 PM
Joined: Nov 2007 Posts: 5,337 the house on the left. C cogen80 master
cogen80 master C Joined: Nov 2007 Posts: 5,337 the house on the left.	that is hemidoug.

Re: problems with mp aluminum hemi heads //valve seats [Re: cogen80] #254200 03/15/09 06:40 PM 03/15/09 06:40 PM
Joined: Jun 2004 Posts: 1,672 Virginia HemiStan top fuel
HemiStan top fuel Joined: Jun 2004 Posts: 1,672 Virginia	Here's a link to the thread. Link

Re: problems with mp aluminum hemi heads //valve seats [Re: cogen80] #254201 03/15/09 07:22 PM 03/15/09 07:22 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?	Quote: that is hemidoug. Exactly, I was drawing a blank..Sorry Doug..

Re: problems with mp aluminum hemi heads //valve seats [Re: conteycp] #254202 03/16/09 08:22 AM 03/16/09 08:22 AM
Joined: May 2005 Posts: 176 New Jersey C conteycp OP member
conteycp OP member C Joined: May 2005 Posts: 176 New Jersey	Ok guys that is disturbing ,, I don't think those pictures are a urban ledgend ! looks like cold hard facts , the question is how long ago were those heads made ? are the newer ones any better in quality ? Dose anyone know how to contact Stage V engineering there web site is very simple with no real descriptions or prices .

Re: problems with mp aluminum hemi heads //valve seats [Re: conteycp] #254203 03/16/09 11:54 AM 03/16/09 11:54 AM
Joined: Aug 2003 Posts: 11,179 Atco NJ DJVCuda I Live Here
DJVCuda I Live Here Joined: Aug 2003 Posts: 11,179 Atco NJ	he is not the only one in jersey that had those heads eat valve seats...

Re: problems with mp aluminum hemi heads //valve seats [Re: DJVCuda] #254204 03/16/09 12:58 PM 03/16/09 12:58 PM
Joined: Jan 2003 Posts: 3,443 Northern N.J. hemi_doug master
hemi_doug master Joined: Jan 2003 Posts: 3,443 Northern N.J.	Yep.....ate an intake seat with less then 500 miles on a new motor. If I were you and HAD to use those heads I would replace EVERY seat or get something else....you have been warned which is more then I got....screw MP anything. It's junk....ALL junk IMHO. 71 440-6 4spd & 69 Hemi 4spd

Re: problems with mp aluminum hemi heads //valve seats [Re: hemi_doug] #254205 03/16/09 06:31 PM 03/16/09 06:31 PM
A Anonymous Unregistered
Anonymous Unregistered A	Wow,sorry to see that...

Re: problems with mp aluminum hemi heads //valve seats #254206 03/16/09 06:35 PM 03/16/09 06:35 PM
Joined: Sep 2005 Posts: 6,516 Santa Cruz, California L Lefty master
Lefty master L Joined: Sep 2005 Posts: 6,516 Santa Cruz, California	Quote: Wow,sorry to see that... Kinda scary running anything from MP now or have all the problems been fixed?

Re: problems with mp aluminum hemi heads //valve seats [Re: Lefty] #254207 03/16/09 08:54 PM 03/16/09 08:54 PM
Joined: Jan 2005 Posts: 1,466 malvern, ohio 3 3ddart pro stock
3ddart pro stock 3 Joined: Jan 2005 Posts: 1,466 malvern, ohio	what time frame (YRS) were the problem heads produced? dave

Re: problems with mp aluminum hemi heads //valve seats [Re: hemi_doug] #254208 03/16/09 10:01 PM 03/16/09 10:01 PM
Joined: May 2005 Posts: 176 New Jersey C conteycp OP member
conteycp OP member C Joined: May 2005 Posts: 176 New Jersey	Quote: Yep.....ate an intake seat with less then 500 miles on a new motor. If I were you and HAD to use those heads I would replace EVERY seat or get something else....you have been warned which is more then I got....screw MP anything. It's junk....ALL junk IMHO. Doug thanks for the warning I think I'll spend the extra money and go for Stage V engineering heads ,hopefully I'll get what I'm paying for.

Re: problems with mp aluminum hemi heads //valve seats [Re: conteycp] #254209 03/17/09 09:46 PM 03/17/09 09:46 PM
Joined: Jan 2003 Posts: 3,443 Northern N.J. hemi_doug master
hemi_doug master Joined: Jan 2003 Posts: 3,443 Northern N.J.	Quote: Quote: Yep.....ate an intake seat with less then 500 miles on a new motor. If I were you and HAD to use those heads I would replace EVERY seat or get something else....you have been warned which is more then I got....screw MP anything. It's junk....ALL junk IMHO. Doug thanks for the warning I think I'll spend the extra money and go for Stage V engineering heads ,hopefully I'll get what I'm paying for. If I had it to do all over again that is what I would do....that seat cost me another 5K and counting....good choice. 71 440-6 4spd & 69 Hemi 4spd

Re: problems with mp aluminum hemi heads //valve seats [Re: 3ddart] #254210 03/18/09 07:18 AM 03/18/09 07:18 AM
Joined: Jan 2005 Posts: 1,466 malvern, ohio 3 3ddart pro stock
3ddart pro stock 3 Joined: Jan 2005 Posts: 1,466 malvern, ohio	anybody know what years these heads were problematic? not all of them ahd seats falling out did they? dave

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