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Subject: "420a headgaskets" Previous topic | Next topic
biggie16gJan-20-10 10:27 AM
Member since May 28th 2007
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#129350, "420a headgaskets"




          

Hey guys just wanted to pass on some information I hope it helps out. When replacing a head gasket on your eclipse make sure your do not use a fel-pro multilayered steel head gasket. I found this out the hard way that they dont work after 3 failed on me. Make sure to use the solid steel gasket, even though its a bit pricier I would even recomend using OEM. Heres the part number from mitsubishi 5014576AA hope this saves some headaches.

1995 eclipse rs-t. Might as well be a ford because I have to fix or repair daily...

  
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Replies to this topic
RE: 420a headgaskets, AdministratorCODE4, Jan-20-10 11:32 AM, #1
RE: 420a headgaskets, biggie16g, Jan-20-10 12:07 PM, #2
RE: 420a headgaskets, AdministratorCODE4, Jan-20-10 12:20 PM, #3
      RE: 420a headgaskets, Moderatorteklein, Jan-20-10 12:22 PM, #4
           RE: 420a headgaskets, 420agreenvilleSC, Jan-20-10 12:32 PM, #5
                RE: 420a headgaskets, ez, Jan-20-10 01:49 PM, #6
                     RE: 420a headgaskets, irregular defect, Jan-20-10 03:37 PM, #7
                          RE: 420a headgaskets, Teamdougie2, Jan-20-10 03:54 PM, #8
                          RE: 420a headgaskets, Moderatorteklein, Jan-20-10 03:56 PM, #9
                               RE: 420a headgaskets, Ebster1085, Jan-20-10 05:10 PM, #10
                                    RE: 420a headgaskets, irregular defect, Jan-20-10 05:18 PM, #11
                                         RE: 420a headgaskets, 2point4, Jan-20-10 09:02 PM, #12
                                              RE: 420a headgaskets, 420agreenvilleSC, Jan-20-10 10:08 PM, #13
                                                   RE: 420a headgaskets, Slo2g, Jan-20-10 10:13 PM, #14
RE: 420a headgaskets, daes_venge, Jan-21-10 12:39 AM, #15
      RE: 420a headgaskets, biggie16g, Jan-21-10 06:52 AM, #16
           RE: 420a headgaskets, irregular defect, Jan-21-10 08:27 AM, #17
           RE: 420a headgaskets, Teamdougie2, Jan-21-10 08:58 AM, #18
                RE: 420a headgaskets, biggie16g, Jan-21-10 09:14 AM, #19
                RE: 420a headgaskets, Moderatorbullettdsm, Jan-21-10 11:55 AM, #20
                     RE: 420a headgaskets, Babbz413, Jan-21-10 12:11 PM, #21
                          RE: 420a headgaskets, Cyexmaster, Jan-21-10 02:51 PM, #22

AdministratorCODE4Jan-20-10 11:32 AM
Member since Nov 23rd 2003
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#129352, "RE: 420a headgaskets"
In response to Reply # 0
 Jan-20-10 11:36 AM by CODE4



          

No. Stop. Wrong.

The current part number for Mopar OEM headgaskets is 5014131AC, used for 2.0 and 2.4 motors. Additionally the OEM HG is not a solid steel, it is a multilayer steel.

And the Fel-Pro MLS has been used with much success.

The 5014576AA part does come back to a cylinder head gasket, where did you get the part number from?

---

2012 2500HD LML

  
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biggie16gJan-20-10 12:07 PM
Member since May 28th 2007
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#129354, "RE: 420a headgaskets"
In response to Reply # 1



          

Straight from all data.

1995 eclipse rs-t. Might as well be a ford because I have to fix or repair daily...

  
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AdministratorCODE4Jan-20-10 12:20 PM
Member since Nov 23rd 2003
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#129356, "RE: 420a headgaskets"
In response to Reply # 2



          

Interesting...

The part number I spec'ed in my first post is the current part distributed by Mopar dealer parts counters.

---

2012 2500HD LML

  
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ModeratortekleinJan-20-10 12:22 PM
Member since Nov 04th 2007
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#129358, "RE: 420a headgaskets"
In response to Reply # 3
 Jan-20-10 12:33 PM by teklein

          

Wait, so the OEM gasket is MLS, and im not supposed to use that? Chrysler designed the MLS gasket to stop the blown head gasket problem using the conventional gasket.

Are you fucking kidding me?

  
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420agreenvilleSCJan-20-10 12:32 PM
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#129360, "RE: 420a headgaskets"
In response to Reply # 4



          

ebay gaskets forever baby

___________________________________________



http://www.2gnt.com/quote_db.php?id=278

Outside of Corona: "That sucks, peace out..." (jamie walks away)... "Sweeet, what we doin?" -Zac
Tim's garage (prior to motor install): "Im gonna smoke real quick, that way if you fuck up I am already nicotined up" -Tim

  
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ezJan-20-10 01:49 PM
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#129361, "RE: 420a headgaskets"
In response to Reply # 5

          

The multilayered has worked successfully for many people here. Have you noticed a pattern to your failures? Are you aware that on the earlier 420a's, one headbolt is slightly too long and bottoms out?

2gnt: '99 RS-T, killed by a toyota, pending rebuild...
Daily: Volt
Daily #2: '99 EVG ebike- STOLEN by PEDRO

  
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irregular defectJan-20-10 03:37 PM
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#129363, "RE: 420a headgaskets"
In response to Reply # 6



          

Well I guess I'm totally screwed then, because I've got a Fel-Pro headgasket and head studs.

  
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Teamdougie2Jan-20-10 03:54 PM
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#129365, "RE: 420a headgaskets"
In response to Reply # 7
 Jan-20-10 03:54 PM by dougie2



          

Fel-Pro MLS headgaskets are absolutely great, that's not the problem. If you blew 3 in a row then you have other issues... most likely the block or head is not flat and smooth, or a bad tune.


Doug

Xtreme Performance Services
Race Engines 路 Transmissions 路 Turbo Systems 路 EFI & Tuning 路 Fabrication 路 Welding
www.xtremefabrications.com

  
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ModeratortekleinJan-20-10 03:56 PM
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#129367, "RE: 420a headgaskets"
In response to Reply # 7

          

Originally posted by irregular defect
Well I guess I'm totally screwed then, because I've got a Fel-Pro headgasket and head studs.


No, your fine.

Dont listen to him.

  
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Ebster1085Jan-20-10 05:10 PM
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#129369, "RE: 420a headgaskets"
In response to Reply # 9

          

I think he was being sarcastic Tim..but I could be wrong

1999 Eclipse GS
Built motor
Hahn 16G Turbo w/ FMIC
Hahn Stage 5 Portfueler (270's & 500's)
Zeitronix Zt-2 wideband w/ 3.5bar MAP
3" SS Turbo Back
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Baer Big Brake Kit

  
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irregular defectJan-20-10 05:18 PM
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#129371, "RE: 420a headgaskets"
In response to Reply # 10



          

Completely.

  
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2point4Jan-20-10 09:02 PM
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#129372, "RE: 420a headgaskets"
In response to Reply # 11

          

maybe he's putting them on upside down... i did that once before. #### mistakes = hard lessons of life

  
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420agreenvilleSCJan-20-10 10:08 PM
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#129377, "RE: 420a headgaskets"
In response to Reply # 12



          

Originally posted by 2point4
maybe he's putting them on upside down... i did that once before. #### mistakes = hard lessons of life


my worst fear. I put it on 5 times just to make absolute sure i dont have a brain fart. lol

___________________________________________



http://www.2gnt.com/quote_db.php?id=278

Outside of Corona: "That sucks, peace out..." (jamie walks away)... "Sweeet, what we doin?" -Zac
Tim's garage (prior to motor install): "Im gonna smoke real quick, that way if you fuck up I am already nicotined up" -Tim

  
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Slo2gJan-20-10 10:13 PM
Member since Feb 10th 2006
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#129378, "RE: 420a headgaskets"
In response to Reply # 13

          

Originally posted by 420agreenvilleSC
Originally posted by 2point4 maybe he's putting them on upside down... i did that once before. #### mistakes = hard lessons of life
my worst fear. I put it on 5 times just to make absolute sure i dont have a brain fart. lol


What YOU did. This is amazing Mikey actually worked on his own car. This should e an announcement.

  
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daes_vengeJan-21-10 12:39 AM
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#129381, "RE: 420a headgaskets"
In response to Reply # 1



          

Originally posted by CODE4
The current part number for Mopar OEM headgaskets is 5014131AC. The 5014576AA part does come back to a cylinder head gasket, where did you get the part number from?

Actually, part numbers M04667528, M04694324, & 5014131AC all have been superseded by part number 5014576AA.

So the part number that the op listed is the current part number.

  
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biggie16gJan-21-10 06:52 AM
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#129382, "RE: 420a headgaskets"
In response to Reply # 15



          

Thanks. Yes I should have stated that this was the current part number and that the others were superceeded. No I did not put them on upside down. no my head was macheined and I checked my block it was fine. What is this about the one headbolt bottoming out? And I'm sorry for saying that the solid steel gasket was the replacement. I checked again and a multilayered steel gasket is infact the new part. It is just a thicker version to prevent a engine knock. Tsb bulletin number 99-11-007. I do however still stand by my opion against the felpro brand gasket.

1995 eclipse rs-t. Might as well be a ford because I have to fix or repair daily...

  
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irregular defectJan-21-10 08:27 AM
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#129384, "RE: 420a headgaskets"
In response to Reply # 16



          

Which Fel-Pro gasket did you use?

#9922PT or #26501PT ?

26501PT is .010" thicker, for heads that have been resurfaced.

  
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Teamdougie2Jan-21-10 08:58 AM
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#129385, "RE: 420a headgaskets"
In response to Reply # 16



          

Originally posted by biggie16g
I do however still stand by my opion against the felpro brand gasket.


Maybe you could explain to us what exactly makes the Fel-Pro gasket so inferior, other than it's brand label?

Just because the head was machined doesn't mean it was machined correctly for use with an MLS gasket. Hell, I've seen shops put heads on a belt sander and swear it'll work with an MLS gasket.

How much warpage did you measure on your block? How much on the head? Have you pressure tested the engine? Are you sure that the cylinder head and block are not cracked?

Trust me dude, the problem is not the brand label on your headgaskets... there's something else going on with your engine and we need to get to the root of the problem here.


Doug

Xtreme Performance Services
Race Engines 路 Transmissions 路 Turbo Systems 路 EFI & Tuning 路 Fabrication 路 Welding
www.xtremefabrications.com

  
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biggie16gJan-21-10 09:14 AM
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#129387, "RE: 420a headgaskets"
In response to Reply # 18



          

.001 max on the block.
.003 was the max on the head.
.000 after macheining on the head.

I have not done a pressure test yet.
I am not sure which part# it was. And my problem might have been I got the wrong one. I just asked for a headgasket... That might have been the problem.

And I say again my opinion was that these gaskets did not work well for me.

1995 eclipse rs-t. Might as well be a ford because I have to fix or repair daily...

  
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ModeratorbullettdsmJan-21-10 11:55 AM
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#129391, "RE: 420a headgaskets"
In response to Reply # 18

          

Originally posted by dougie2
Trust me dude, the problem is not the brand label on your headgaskets... there's something else going on with your engine and we need to get to the root of the problem here.

True statement. Nothing wrong with Fel Pro. Personal experience and quantitative data of others.

Captain Caveman

96 RS Turbo 11.414 @ 119.62 MSNS, Crower 2 NA cams, BW366, 10.5 comp, UDP, 60mm TB, W/A intercooler, 3.55 tranny 567.9whp 430tq
97 RS NA 13.188 @ 103.87 MSnS powered 12.5 comp, Crower 3's and 219.4whp with 175tq
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Babbz413Jan-21-10 12:11 PM
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#129392, "RE: 420a headgaskets"
In response to Reply # 20



          

i did a rebuild this summer and used a felpro mls. no problems at all yet. and i shaved my headbolts a bit.

95 GS Boosted

  
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CyexmasterJan-21-10 02:51 PM
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#129394, "RE: 420a headgaskets"
In response to Reply # 21



          

Do the ARP head bolts have the same problem or are they ok?

Status- Need to do break-in...



Try not to challenge me, I'd rather tie up than lose. Either way you NEVER WIN.... - Me..

  
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