Moparts
anyone have GOOD luck with the mopar alum hemi heads
Posted By: 3ddart
anyone have GOOD luck with the mopar alum hemi heads - 04/01/10 06:39 PM
well, anyone that follows the hemi posts on here are most likely aware that torkrules is the latest victim of the seat falling out of a mp aluminum hemi head. my hope goes out to john that his luck on his project will change for the better! my ? then is being that john is not the 1st on here to have this happen, is there anyone who has put 10,000 miles on there aluminum headed hemi and not had problems? i'm wondering out loud if we are all going to experience this or did some good 1's get out the door and how can you tell what you have, good or bad. thanks dave
Posted By: HemiDart68
Re: anyone have GOOD luck with the mopar alum hemi heads - 04/01/10 06:47 PM
I have had them on my last 3 hemi cars. The last set i had were CNC ported modern heads, that made a 1000 horsepower. I have had good luck.
Posted By: torkrules
Re: anyone have GOOD luck with the mopar alum hemi heads - 04/01/10 08:35 PM
Quote:
well, anyone that follows the hemi posts on here are most likely aware that torkrules is the latest victim of the seat falling out of a mp aluminum hemi head. my hope goes out to john that his luck on his project will change for the better! my ? then is being that john is not the 1st on here to have this happen, is there anyone who has put 10,000 miles on there aluminum headed hemi and not had problems? i'm wondering out loud if we are all going to experience this or did some good 1's get out the door and how can you tell what you have, good or bad. thanks dave
Hi Dave,
Thanks for the good wishes. FWIW, I had about 4000 miles on these heads. When I had the guides re-done about 2 years ago I asked Tim Banning about the rumors. His point of view was that they usually fall out right away (on the dyno). If they don't, the chances of them falling out decreases. I for one and I think a couple of others had seats drop around the 3000-5000 mile mark.
He said that all he could really do is check to see if they were loose when he re-cut the seats. There's no real fool proof way to detect if there's a problem. The next best thing to do is remove all of the seats and install new oversized ones, but I think the expense would be close to a new set of heads.
I sincerely hope that you or anyone else using these heads got a good set and never have trouble with them. I did not mean to be a fear monger, but in good conscience I could not keep this quiet in the hopes of prevented anyone else from having the grief I have experienced.
I really was planning to put the engine back in this weekend and enjoy some of this nice weather.
Posted By: 3ddart
Re: anyone have GOOD luck with the mopar alum hemi heads - 04/01/10 10:36 PM
john: i for 1 am glad you brought it to our attention. when this happened before (sorry can't remember the member that had the problems) you and i talked via pms about this and it bothered me then. at that time the motor was still unassembled and i thought about what my options were and decided to stay the course. now the motor has been assembled, run on a break-in stand and installed. this has been just 1 project from the last 9 yrs and of course i get asked about the HEMI all the time and i'm hoping to get it on the road this summer. i just winch when i think of the possibilty of that happening and so i was looking (hoping) for some positive feedback via this fourm. again i thank you for stepping up and letting us know about it and sincerly hope your luck takes a turn for the better with your car project. dave
Posted By: torkrules
Re: anyone have GOOD luck with the mopar alum hemi heads - 04/01/10 10:55 PM
Quote:
john: i for 1 am glad you brought it to our attention. when this happened before (sorry can't remember the member that had the problems) you and i talked via pms about this and it bothered me then. at that time the motor was still unassembled and i thought about what my options were and decided to stay the course. now the motor has been assembled, run on a break-in stand and installed. this has been just 1 project from the last 9 yrs and of course i get asked about the HEMI all the time and i'm hoping to get it on the road this summer. i just winch when i think of the possibilty of that happening and so i was looking (hoping) for some positive feedback via this fourm. again i thank you for stepping up and letting us know about it and sincerly hope your luck takes a turn for the better with your car project. dave
Thanks buddy! 
Posted By: Anonymous
Post deleted by Defbob - 04/02/10 12:45 AM
Posted By: HemiDart68
Re: anyone have GOOD luck with the mopar alum hemi heads - 04/02/10 01:22 PM
Quote:
Quote:
I have had them on my last 3 hemi cars. The last set i had were CNC ported modern heads, that made a 1000 horsepower. I have had good luck.
there were some that did not have any problem but there is no way to tell good from bad. no one knows if it was an entire run that was bad and just a few good ones ame out of that batch.
I guess i should follow on by saying my new motor has Milleniums. No Mopar perts here.
Posted By: Anonymous
Post deleted by Defbob - 04/02/10 04:18 PM
Posted By: Lee446
Re: anyone have GOOD luck with the mopar alum hemi heads - 04/02/10 05:21 PM
After buying a Cummins 528 and correcting all of the problems with it, this comes up!! I just invested a fair amount of $ with Jeff @ Modern getting the MP heads straightned out, sloppy guides, bent exhaust valves, junk springs, retainers, locks. At the time, I talked with Jeff and he said that he had not experienced the seat issue, but he had heard of it second hand. I appreciate the guys who know of this first hand reporting it. I can't help but wonder, surely there must be some way of identifying what the conditions are for this problem. If it is just poorly installed seats, bad seats, or a defective head casting, there must be a way of identifying the cause! As a potential victim of this, I don't mind kicking in some cash to have the defective head examined to determine the cause. It would be worth it to all of us with these heads to find out what we can do to keep this disaster from happening to us. I can't afford to lose the investment I have in my Hemi. Lee.
Posted By: Anonymous
Post deleted by Defbob - 04/02/10 05:28 PM
Posted By: Mac's Hemi 64
Re: anyone have GOOD luck with the mopar alum hemi heads - 04/02/10 05:36 PM
What are the casting dates for the heads that have had problems? Maybe there will be a pattern show up. I have not had any problems with my 1997 cast MP aluminum heads so far.
Posted By: torkrules
Re: anyone have GOOD luck with the mopar alum hemi heads - 04/02/10 08:21 PM
Quote:
What are the casting dates for the heads that have had problems? Maybe there will be a pattern show up. I have not had any problems with my 1997 cast MP aluminum heads so far.
I bought mine around late 2006/early 2007. Lets say they sat on the shelf for a year. So I would probably say 2004 up to the time they switched to Eddy.
Posted By: mickm
Re: anyone have GOOD luck with the mopar alum hemi head - 04/02/10 10:19 PM
i have the same heads. i have no idea, but have to say mine were bought in the 2004 period as well. at this point i think i have about 8k miles on the engine, (about to be 9k for spring fling).
but what can you do? it definitely seems to me so far that although people have seen otherwise, the overall rumor is that if they are going to fall out, it will be right away.
if i had that happen, all i could do is park the car for now, no matter how minimal the damage was. since there is no way to check to see if anything is up with the seats, i'm just going to drive it.
oh, and my heads got a port and valve job 1-2k miles ago by a very good head guy, so at least he didn't notice anything suspicious.
Posted By: 3ddart
Re: anyone have GOOD luck with the mopar alum hemi head - 04/03/10 12:33 AM
lee: that's the same boat i'm in and why i brought this up. i guess i'm trying to get a "feel good" about it by people not having seen a problem with their heads. i know nothing in this world is a given but i won't be able to enjoy this car thats seemed to have taken forever to finish if i'm worried that it's going to leave me stranded on the roadside! and i have to say at this point it isn't looking too positive. maybe i should have started a poll? dave
Posted By: Lee446
Re: anyone have GOOD luck with the mopar alum hemi head - 04/03/10 01:35 AM
Dave, I am a bit nervous myself, I just redid mine and have probably put 5 or 600 miles on it. After having all the headwork and porting done, I hope all will come out well. I sure would like to know what the cause is! Lee.
Posted By: HemiDart68
Re: anyone have GOOD luck with the mopar alum hemi head - 04/03/10 01:47 AM
Honestly if i have had already purchased the heads i would definatly run them. I know of a couple people on here had problems. I personally have had 3 sets, and know alot of others running around without a problem. I would say that the chances of the seats dropping are very slim. I wouldn't go scraping a set of hemi heads over it. Or you can ship them to me ill use em. i give you my fed ex number, no cost to you.
Posted By: super451b
Re: anyone have GOOD luck with the mopar alum hemi heads - 04/03/10 04:07 AM
Dave, If your worried about breaking down along the road, I know where there's a nice white car we can put it in and try it out for a while !
Posted By: 3ddart
Re: anyone have GOOD luck with the mopar alum hemi heads - 04/03/10 08:36 AM
hey thanks wade, i may take you up on that! i guess that's what i was really wanting is for someone to step forward to help!
dave
Posted By: B G Racing
Re: anyone have GOOD luck with the mopar alum hemi heads - 04/03/10 08:45 AM
We had a seat spin out while doing a valve job with a cutter on a Serdie machine.We also found seats that were not sitting flush(metal chips under the seats)and not centered to the guide.
Posted By: Lee446
Re: anyone have GOOD luck with the mopar alum hemi heads - 04/03/10 02:14 PM
Bob, could you explain to us novices, what actually causes seats to come loose? When you talk of a seat not being centered to the valve guide, does that mean it loads the seat to one side and tries to pop it out like a bottle cap? If there is a problem with the casting or the alloy, (and what is the liklihood of this?)would welding the seat area and remachining it be worthwhile or a crapshoot? It would seem like there would be a way to determine the underlying cause of this, I remember back in the early days of production aluminum heads they had problems that obviously got worked out. If the seat is strictly a press fit, would the likely culprit be poor machining tolerances? Also, who manufactured these heads anyway? I appreciate your help! Lee.
Posted By: Quicktree
Re: anyone have GOOD luck with the mopar alum hemi heads - 04/03/10 02:30 PM
man you guys have me worried now
not that I will ever finish my hemi. but my cnc ported aluminum heads by ModernCyl are setting there ready to go. I am concerned about the valves and the seats. will those veavles stand a large roller (low 700 lift)? I alreday have the springs set up for one.
Posted By: mickm
Re: anyone have GOOD luck with the mopar alum hemi head - 04/03/10 05:36 PM
personally, i think this is getting people too riled up. yes, there was a problem with at least one run of these heads, but how many are out there that have never had a problem? i know a guy not far from here with a 528 blown hemi putting out at least 1200 hp, and he is running these heads.
when something like this happens, people talk. with the internet, it's a small community, and so word gets around.
if someone could show me that 40% of these heads drop seats, then i would probably do something about it. but in the end, i'm sure the percentage is pretty small to the number of heads out there running just fine.
yes, you COULD get eaten by a shark, but have you ever looked at the number of people who swim in the ocean every year and the number who are bitten? (best example i could come up with off hand
)
Posted By: Lee446
Re: anyone have GOOD luck with the mopar alum hemi head - 04/03/10 06:17 PM
Mickm, I don't agree. Apparently we have at least four instances on this forum alone. Statistically, when you consider how few people on this forum have a Hemi, then figure how many of those are using the MP aluminum head as opposed to the other brands. I suspect that it is a fairly significant anamoly, all things considered. If it were about wedge heads, the proportion would probably be less significant. I know that if there is a way to test these heads for this problem, I will tear down my engine in a heartbeat rather than chance carrying a 20K engine home in a steel sack! What heads are you running on your Hemi?
Posted By: Anonymous
Post deleted by Defbob - 04/03/10 06:45 PM
Posted By: mickm
Re: anyone have GOOD luck with the mopar alum hemi head - 04/03/10 07:15 PM
hey guys. i'm not saying this isn't an issue. all i'm saying (for myself) is that i think if you look at the total number of these heads out there in use, and the number of failures, my bet is that it isn't that significant a number.
now, since i have absolutely no clue of these numbers, i may be dead wrong, and it may be more significant than i think. but i have met and heard of a lot of people running these heads who have no issues with them.
i agree if there was a way to check this, i would do it as well. but since there isn't, there are two choices. 1) run them, 2) buy a different set of heads. 2) is out of the question for me, so ding! ding! ding! 1) is the winner!
all i can say is i really hope that we hear fewer and fewer of these stories.
Posted By: mickm
Re: anyone have GOOD luck with the mopar alum hemi head - 04/03/10 07:16 PM
Quote:
What heads are you running on your Hemi?
i'm running the mopar aluminum, but i don't know when they were produced.
Posted By: 1_WILD_RT
Re: anyone have GOOD luck with the mopar alum hemi heads - 04/03/10 08:03 PM
FWIW HemiDoug's on the list from a few years ago... Not a list you wanna be part of...
Posted By: mickm
Re: anyone have GOOD luck with the mopar alum hemi head - 04/03/10 08:44 PM
yeah, again it's kind of simple. if there was a way to check, i would. otherwise i'm just going to run it and not worry about it, and hopefully i'll never make the list!
and let me add that hopefully no one else here will!
Posted By: Anonymous
Post deleted by Defbob - 04/04/10 12:14 AM
Posted By: torkrules
Re: anyone have GOOD luck with the mopar alum hemi head - 04/04/10 01:45 AM
Quote:
This dreary thread needed some humor. Thanks Fred!
Posted By: 3ddart
Re: anyone have GOOD luck with the mopar alum hemi head - 04/04/10 01:50 AM
guys i'm not trying to fan the fire here, i would like some #s on how wide spread this problem is. i (1) can't eat the cost to take mine apart to check what? (no ones seems to know how to tell good 1s from bad other then them having mp on them) (2) i can't eat the cost of a junk hemi. and (3) i couldn't sell them to someone thinking there is a chance it could happen to them, that would make me no better then the culprits i'm ?ing about. i'd just like to know how widespread this problem is. the shark senerio is good unless your the 1 biten!. anybody holding out on us out there? dave
Posted By: Bob_Coomer
Re: anyone have GOOD luck with the mopar alum hemi head - 04/04/10 01:59 AM
I hope the newer batch of MP heads are better. I have heard the casting diff is night and day. Edelbrock is casting the new ones for Ma Mopar. I the newer designed is approved, and run by the Super Stock guys.
A disaster like this would be nothing short of a the worst nightmare coming true...
I have some money in these at this point.
Posted By: B G Racing
Re: anyone have GOOD luck with the mopar alum hemi head - 04/04/10 09:43 AM
Other than pressure checking,vacume checking and checking the concentricity to the guide or the seat paralell to the guide it's anyones guess,unless it is loose and turns when you are cutting the seat.
Posted By: hemi_doug
Re: anyone have GOOD luck with the mopar alum hemi head - 04/04/10 02:13 PM
Here is what happens when you TRUST Mopar Performance....
Posted By: hemi_doug
Re: anyone have GOOD luck with the mopar alum hemi head - 04/04/10 02:15 PM
The piston side...
That seat popped out after about 2000 miles.....
I would not and will never buy another set of aluminum MP heads without replacing the seats as a MANDITORY requirement.....
Saving 200 bucks cost me 8 grand.....You still wanna take that chance? I know what I would have done had someone warned me....
Here is a hint that the "trouble" is on it's way....
IF you have a valve tap that comes and goes...SHUT IT DOWN AND GET THOSE FREEKIN HEADS OFF THAT MOTOR ASAP!
OH...and all those pieces....took out 4 other cylinders...I was lucky I didn't have to sleeve the block...but now I'm .060 over on a block that has about 20,000 miles.
Posted By: Anonymous
Post deleted by Defbob - 04/04/10 02:54 PM
Posted By: torkrules
Re: anyone have GOOD luck with the mopar alum hemi heads - 04/04/10 03:24 PM
Quote:
want to guess what casue this
Holy crap Fred, is that out of a Hemi or an R2800 Pratt and Whitney radial engine? What's that a 5" bore?
Posted By: mickm
Re: anyone have GOOD luck with the mopar alum hemi head - 04/04/10 04:09 PM
Quote:
want to guess what casue this
mice?
big freakin mice with really large teeth??
Posted By: mickm
Re: anyone have GOOD luck with the mopar alum hemi head - 04/04/10 04:11 PM
Quote:
Here is a hint that the "trouble" is on it's way....
IF you have a valve tap that comes and goes...SHUT IT DOWN AND GET THOSE FREEKIN HEADS OFF THAT MOTOR ASAP!
now this is great to know! at least there is some sign that it might be happening. obviously this won't come up every time, but at least there is SOME sign.
Posted By: mickm
Re: anyone have GOOD luck with the mopar alum hemi head - 04/04/10 04:17 PM
Quote:
guys i'm not trying to fan the fire here, i would like some #s on how wide spread this problem is. i (1) can't eat the cost to take mine apart to check what? (no ones seems to know how to tell good 1s from bad other then them having mp on them) (2) i can't eat the cost of a junk hemi. and (3) i couldn't sell them to someone thinking there is a chance it could happen to them, that would make me no better then the culprits i'm ?ing about. i'd just like to know how widespread this problem is. the shark senerio is good unless your the 1 biten!. anybody holding out on us out there? dave
i think the only thing that you could really do is to take the heads off and have the seats replaced.
it doesn't make sense to own and drive the car if the whole time you are thinking about whether the engine is going to waste itself. that just takes all the fun out of it.
now that you know this is an issue, is knowing the numbers really going to make you feel any better?
couple hundred for gaskets, get an estimate to replace the seats, and go from there.
do what you need to do to make it fun to drive, not a constant worry.
Posted By: torkrules
Re: anyone have GOOD luck with the mopar alum hemi head - 04/05/10 12:02 AM
Quote:
Here is a hint that the "trouble" is on it's way....
IF you have a valve tap that comes and goes...SHUT IT DOWN AND GET THOSE FREEKIN HEADS OFF THAT MOTOR ASAP!
OK, there is something to this. Last year toward the end of the year, I kept getting, what I thought was a loose lifter. The noise would come and go, but eventually it would only get loud when the engine warmed up. It was coming from the right bank (#6 failed). When I pulled it apart, #3 cam bearing had turned. I thought that was the source of the ticking.
Jeez, maybe it was the seat telling me a along it was ready to fall out. I had a suspicion that that was the cause, but I figured there was no in between (either its in or its out).
Could I have been wrong? 
Posted By: hemi_doug
Re: anyone have GOOD luck with the mopar alum hemi head - 04/05/10 12:17 PM
Quote:
Quote:
Here is a hint that the "trouble" is on it's way....
IF you have a valve tap that comes and goes...SHUT IT DOWN AND GET THOSE FREEKIN HEADS OFF THAT MOTOR ASAP!
OK, there is something to this. Last year toward the end of the year, I kept getting, what I thought was a loose lifter. The noise would come and go, but eventually it would only get loud when the engine warmed up. It was coming from the right bank (#6 failed). When I pulled it apart, #3 cam bearing had turned. I thought that was the source of the ticking.
Jeez, maybe it was the seat telling me a along it was ready to fall out. I had a suspicion that that was the cause, but I figured there was no in between (either its in or its out).
Could I have been wrong?
YES! 
Posted By: Anonymous
Post deleted by Defbob - 04/05/10 12:56 PM
Posted By: 3ddart
Re: anyone have GOOD luck with the mopar alum hemi head - 04/05/10 01:03 PM
any other takes on this snafu!
Posted By: maximus
Re: anyone have GOOD luck with the mopar alum hemi head - 04/05/10 01:03 PM
We are talking pre Edelbrock heads, aren't we? Do any of the newer aluminum heads have this problem?
Posted By: 3ddart
Re: anyone have GOOD luck with the mopar alum hemi head - 04/07/10 02:20 AM
anybody have a time frame (dates of manufacture) on the suspect heads? dave
Posted By: torkrules
Re: anyone have GOOD luck with the mopar alum hemi head - 04/08/10 11:09 AM
Quote:
We are talking pre Edelbrock heads, aren't we? Do any of the newer aluminum heads have this problem?
My understanding is that the Edelbrocks, Stage V, Indy, have not hand any problems so far.
Posted By: torkrules
Re: anyone have GOOD luck with the mopar alum hemi head - 04/08/10 11:12 AM
Quote:
anybody have a time frame (dates of manufacture) on the suspect heads? dave
Dave,
I bought mine late 2006/early 2007 (my memory's not what it used to be). So lets say thay sat on the shelf for a while. A safe bet would be 2004 until the Edelbrocks came out.
Posted By: 3ddart
Re: anyone have GOOD luck with the mopar alum hemi head - 04/08/10 01:04 PM
john: i bought mine in dec, 2005. that puts me right in the mix. they came from a local dodge dealer so i don't think they would have had them very long. also the guy that did the valve job said he saw no indication that anything was amiss, BUT!!! i'm still not sure what i'm going to do yet. dave
Posted By: SCATPK
Re: anyone have GOOD luck with the mopar alum hemi head - 04/13/10 06:29 AM
Here is a old picture of mine.
.jpg "5922857-HF-Exhaust_25241563(Large).jpg")
Posted By: SCATPK
Re: anyone have GOOD luck with the mopar alum hemi head - 04/13/10 06:30 AM
Head.
.jpg "5922858-HF-Exhaust_25241564(Large).jpg")
Posted By: torkrules
Re: anyone have GOOD luck with the mopar alum hemi head - 04/13/10 11:04 AM
Quote:
john: i bought mine in dec, 2005. that puts me right in the mix. they came from a local dodge dealer so i don't think they would have had them very long. also the guy that did the valve job said he saw no indication that anything was amiss, BUT!!! i'm still not sure what i'm going to do yet. dave
FWIW, I had the heads apart over the past winter to upgrade the springs for a mild roller cam and to clean up all of the baked on oil from the intake mismatch. I had to scrape crud off all the intake valves. I lapped the valves myself and didn't see anything out of the ordinary.
The engine ran fine all last year, but I was experiencing an intermittent tick that I thought were the hydraulic lifters. Toward the end of the year, the tick got more predictable (fine when cold but as soon as the engine warmed up it was there). At the end of the year I had it on the dyno to try to figure out what was going on. We pinned it to the right bank near the rear (#6 had the seat problem).
I thought the valve seat might be the culprit but I figured it would have just fallen right out. When I took the engine apart, I found #3 cam bearing oil hole had either turned 340 degrees or it was put in wrong. I always check everything so I doubt I would miss something that fundamental so I assumed thats what the ticking was. Now I think it was the seat trying to tell me something
Posted By: torkrules
Re: anyone have GOOD luck with the mopar alum hemi head - 04/13/10 11:05 AM
Quote:
Here is a old picture of mine.
I hate seeing stuff like that
Posted By: Hemi Allstate
Re: anyone have GOOD luck with the mopar alum hemi head - 04/13/10 04:54 PM
Quote:
Here is a old picture of mine.
What year were those heads?
Posted By: Bob_Coomer
Re: anyone have GOOD luck with the mopar alum hemi head - 04/13/10 05:13 PM
Posted By: Hemi Allstate
Re: anyone have GOOD luck with the mopar alum hemi head - 04/13/10 05:21 PM
Bob, I haven't heard anything negative about the Edelbrock Heads.
Isn't that what yours are?
Mark
Posted By: torkrules
Re: anyone have GOOD luck with the mopar alum hemi head - 04/13/10 08:17 PM
Quote:
Keep me in your prays....Pic of the new MP castings
Can a potential problem bee seen visually when performing a valve job on a problematic valve seat, I wonder
Could not tell with mine and I had the valves out. If you have the edelbrocks, you are good to go.
Posted By: 3ddart
Re: anyone have GOOD luck with the mopar alum hemi head - 04/15/10 06:01 PM
man this blows me away that only a couple of guys have spoke up positivly about this! not a good indication of faith! does any of the mp guys on here have anyhting to report? dave
Posted By: Venomvpr900
Re: anyone have GOOD luck with the mopar alum hemi head - 04/15/10 07:06 PM
Quote:
man this blows me away that only a couple of guys have spoke up positivly about this! not a good indication of faith! does any of the mp guys on here have anyhting to report? dave
Probably not because their customer service is like the quality of their parts ... 
non-existant
Posted By: 3ddart
Re: anyone have GOOD luck with the mopar alum hemi head - 04/16/10 01:11 PM
maybe, but david h and skippy (and maybe others) get on here, so if they know something it would be nice to hear from them!!!! dave
Posted By: 3ddart
Re: anyone have GOOD luck with the mopar alum hemi head - 04/16/10 07:38 PM
Posted By: Hemi Allstate
Re: anyone have GOOD luck with the mopar alum hemi head - 04/16/10 09:03 PM
Quote:
maybe, but david h and skippy (and maybe others) get on here, so if they know something it would be nice to hear from them!!!! dave
I second that!!!
Mark
Posted By: Anonymous
Post deleted by Defbob - 04/16/10 09:29 PM
Posted By: 3ddart
Re: anyone have GOOD luck with the mopar alum hemi head - 04/21/10 11:41 AM
Posted By: MrSixpack
Re: anyone have GOOD luck with the mopar alum hemi head - 04/21/10 01:40 PM
I'm building a hilborn injected hemi right now, and I have the same heads
Could the problem be solved, is there a fix without putting them in the dumpster?
I have one of Europs best head guy's that I will call, but just wanted to know before I call him.
Thanks
Posted By: MrSixpack
Re: anyone have GOOD luck with the mopar alum hemi head - 04/23/10 07:08 AM
btt
Posted By: Hemiroid
Re: anyone have GOOD luck with the mopar alum hemi head - 04/23/10 12:40 PM
Quote:
man this blows me away that only a couple of guys have spoke up positivly about this! not a good indication of faith! does any of the mp guys on here have anyhting to report? dave
It was nearly impossible to get MP engineering to admit they had a problem and to pull existing parts and fix problems. All aluminum heads that were offered by them (hemi, Stg VI, W5) at one time or another had serious casting problems that took an act of God to make right. Dealing with the people making the decisions through the 90's was incredibly frustrating to say the least.
Posted By: HemiDart68
Re: anyone have GOOD luck with the mopar alum hemi head - 04/23/10 01:45 PM
Quote:
I'm building a hilborn injected hemi right now, and I have the same heads
Could the problem be solved, is there a fix without putting them in the dumpster?
I have one of Europs best head guy's that I will call, but just wanted to know before I call him.
Thanks
Alot more people are running them successfully then have had problems. They are not all junk. I personally would not go throwing them away. 
Again if anyone wants to dumpster them, ill give them $100 scrap aluminum value for the heads and pay shipping to me
Posted By: MrSixpack
Re: anyone have GOOD luck with the mopar alum hemi head - 04/23/10 03:56 PM
Posted By: hemi_doug
Re: anyone have GOOD luck with the mopar alum hemi head - 04/23/10 09:17 PM
All you have to do is pop the old seats out and size the new ones correctly. From what I understand is they had a bad run on one of the CNC programs. My understanding is that someone fat fingered the program and moved the decimal point once over to the left on the seat pockets.
Posted By: 3ddart
Re: anyone have GOOD luck with the mopar alum hemi head - 04/24/10 12:23 AM
doug: thanks for your input on this subject as you've been there, done that. however i must call to your attention fred said earlier in the post they tried that and it didn't work. on a side note, went to the local dodge dealer today on a warrenty issue on the wife's 09 durango and was chatting with the service manager (a very nice lady) and i mentioned the seat issue to her and she said "oh yea, they've (mp) had alot of issues with the hemi alum seats!". she said she couldn't remember were she saw the info but she was aware that there is a problem!
Posted By: hemi_doug
Re: anyone have GOOD luck with the mopar alum hemi head - 04/24/10 01:18 AM
I know...I've seen it..so far so good for me. I know what it sounds like when they start so you can bet I'll have those heads off at the first sign. In the mean time....what else can I do? I'm not going to spend another 4K on heads any time soon I can tell you that.
Posted By: 3ddart
Re: anyone have GOOD luck with the mopar alum hemi head - 04/24/10 10:50 AM
pretty much the same boat i'm in, except my car hasn't seen the road yet and i've been working on it since 01. still wish some of the mp guys would enlighten us on this!
