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Steel Shim Head Gaskets- Mr Gasket vs MoPar Performance #255781
03/16/09 02:21 PM
03/16/09 02:21 PM
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GTX MATT Offline OP
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The MoPar performance gaskets are 140, the Mr Gaskets are 20. Why is there such a difference? Is something wrong with the Mr Gaskets? Anyone run them? Any known problems?


Now I need to pin those needles, got to feel that heat
Hear my motor screamin while I'm tearin up the street
Re: Steel Shim Head Gaskets- Mr Gasket vs MoPar Performance [Re: GTX MATT] #255782
03/16/09 02:40 PM
03/16/09 02:40 PM
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Manitoba, Canada
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Someone here said the company that was making the MP gaskets stopped making them. So the laws of supply and demand come into play. I thought the Mr. Gaskets were on backorder, but if you can get a set go for it.

Re: Steel Shim Head Gaskets- Mr Gasket vs MoPar Performance [Re: DaytonaTurbo] #255783
03/16/09 03:57 PM
03/16/09 03:57 PM
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NE Ohio
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71 FJ6 Charger Offline
mopar
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Summit has the Mr.Gasket pair,or Mancini Racing.Got mine at Summit last week,$18.


'71 383HP FJ6 Charger SE
Re: Steel Shim Head Gaskets- Mr Gasket vs MoPar Performance [Re: 71 FJ6 Charger] #255784
03/16/09 04:06 PM
03/16/09 04:06 PM

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[Edited by Moparts - Keep it clean] are the MP one's so expensive??? Are they made of gold or somethin? I bought a set in 2003 and they were $29 bux. Now there $173 at summit.Wut gives???

Re: Steel Shim Head Gaskets- Mr Gasket vs MoPar Performance #255785
03/16/09 04:08 PM
03/16/09 04:08 PM
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las vegas
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they changed vendors/manufactures of the gaskets...

new gasket...new price....


Tony

70 AARCuda Vitamin C
71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield)
71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas)
71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)
Re: Steel Shim Head Gaskets- Mr Gasket vs MoPar Perform #255786
03/16/09 04:49 PM
03/16/09 04:49 PM
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Quote:

[Edited by Moparts - Keep it clean] are the MP one's so expensive??? Are they made of gold or somethin? I bought a set in 2003 and they were $29 bux. Now there $173 at summit.Wut gives???




i bought a bunch last year from summit for about 20 bucks a pop , I should have enough to last me till I can't buy gas anymore .

I now am forced to buy the mr. gasket .

Re: Steel Shim Head Gaskets- Mr Gasket vs MoPar Perform [Re: JohnRR] #255787
03/17/09 03:35 PM
03/17/09 03:35 PM
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Quote:



i bought a bunch last year from summit for about 20 bucks a pop , I should have enough to last me till I can't buy gas anymore .

I now am forced to buy the mr. gasket .






Alright thanks guys, I thought maybe I was missing something on the Mr. Gaskets but I guess that is what I'll be buying.


Now I need to pin those needles, got to feel that heat
Hear my motor screamin while I'm tearin up the street
Re: Steel Shim Head Gaskets- Mr Gasket vs MoPar Perform [Re: GTX MATT] #255788
03/17/09 06:24 PM
03/17/09 06:24 PM
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Rio Linda, CA
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Some complain about the 4.370" bore on the Mr. Gasket #1135 embossed gasket.


The INTERNET, the MISinformation superhighway
Re: Steel Shim Head Gaskets- Mr Gasket vs MoPar Perform [Re: John_Kunkel] #255789
03/17/09 07:37 PM
03/17/09 07:37 PM
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S.E. Michigan
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It's been awhile since I posted, I've dug in deeper since my last post, I've learned alot more about this topic and here's the current situation as I understand it.

MP Hemi steel shim gaskets were discontinued and replaced with MLS some time ago, mostly at the request of MPs crate engine builders. There is a huge push for quality and Ray Barton/Gary Stanton are helping MP improve more than just engine assemblies. Anyway, as you can imagine there was a big price increase at the same time, nobody can sell MLS gaskets for 20 bucks without losing their shirt.

Somehow though, at the same time, the Wedge steel shim gaskets went along for the ride...the same thing happened with the Wedge steel shim gaskets even though there is no current Wedge crate engine, and no specific input from anyone about that exact product. It appears to have been two birds killed with one stone. It might have been a purchasing deal where programs were combined...I am not sure...

But I'll tell you what: MP has recieved a reasonable quote from the OEM supplier for Wedge steel shim gaskets, the tooling is still in good condition, and from the fairly high annual sales volumes of that part it appears it should have no problem returning to the product line. The plan is to reactivate the old part number and make it available again BUT this will take time, the supplier has to be issued a PO and so forth, and there are very few people around to do the work so be patient...it definitely won't happen immediately.

Another hint I can give is this....the old OEM part number for Wedge steel shim gaskets is actually still good, and a couple weeks ago I found out stock still exists in the depot system under that part number (not the performance part number). It's ancient stock, though, just so folks are aware. I can dig up the OEM number if anyone wants to buy them and see if they're still in good shape...hopefully they're just dusty but some of that stuff has sat around since the '70s so there's no telling. If the depot had a leaky roof or something like that and the stock is damaged, then they can always be sent back.

Re: Steel Shim Head Gaskets- Mr Gasket vs MoPar Perform [Re: John_Kunkel] #255790
03/17/09 07:48 PM
03/17/09 07:48 PM
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Lincoln Nebraska
RapidRobert Offline
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Quote:


Some complain about the 4.370" bore on the Mr. Gasket #1135 embossed gasket.


John would you educate me on this as something came up on this the other day on SB head gaskets also & I am totally in the dark on this subject. What is the problem? is the gasket bore dia too big or not big enough? & how big should it be(in relation to the bore size) so I can relate this to my SB engines.


live every 24 hour block of time like it's your last day on earth
Re: Steel Shim Head Gaskets- Mr Gasket vs MoPar Perform [Re: RapidRobert] #255791
03/18/09 02:50 PM
03/18/09 02:50 PM
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Rio Linda, CA
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4.370" is a little too small for a 400 block bored to 4.375" (.035" oversized) and many feel it's way too big for the smaller bore BB's like the 361, 383, 413.


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Re: Steel Shim Head Gaskets- Mr Gasket vs MoPar Perform [Re: John_Kunkel] #255792
03/18/09 04:03 PM
03/18/09 04:03 PM
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NE Ohio
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That is my only b itch about it,too big for the 383. But for $20..............


'71 383HP FJ6 Charger SE
Re: Steel Shim Head Gaskets- Mr Gasket vs MoPar Perform [Re: John_Kunkel] #255793
03/18/09 04:08 PM
03/18/09 04:08 PM
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JohnRR Offline
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Quote:


Some complain about the 4.370" bore on the Mr. Gasket #1135 embossed gasket.




I thought the bore on this gasket was much larger ???

according to summit spec page this gaskets bore is 4.450

mrg 1135

Way too big for a 383 bore, but for 20 bucks I'll deal with it when the time comes . I have one but it's at work and I'm not , I'll measure it tomorrow .

Last edited by Johnahah; 03/18/09 04:17 PM.
Re: Steel Shim Head Gaskets- Mr Gasket vs MoPar Perform [Re: RapidRobert] #255794
03/18/09 04:17 PM
03/18/09 04:17 PM
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JohnRR Offline
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Quote:

Quote:


Some complain about the 4.370" bore on the Mr. Gasket #1135 embossed gasket.


John would you educate me on this as something came up on this the other day on SB head gaskets also & I am totally in the dark on this subject. What is the problem? is the gasket bore dia too big or not big enough? & how big should it be(in relation to the bore size) so I can relate this to my SB engines.




The bore size of the gasket needs to be at least as big or BIGGER than your bore size otherwise it will hang into the chamber and burn up once the engine is running in a short time .

Re: Steel Shim Head Gaskets- Mr Gasket vs MoPar Perform [Re: JohnRR] #255795
03/18/09 07:28 PM
03/18/09 07:28 PM

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I snagged the last set Summit had today of the Mr Gaskets -- You have to think that the vendor says OK I have a PO and a gasket order but will I be paid??? I think folks better hustle on the old stuff and stock up. They come in pretty handy when perking up an old 400 on the cheap etc. Man it is one thing after another isn't it?

Re: Steel Shim Head Gaskets- Mr Gasket vs MoPar Perform [Re: JohnRR] #255796
03/18/09 08:19 PM
03/18/09 08:19 PM
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Lincoln Nebraska
RapidRobert Offline
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Quote:

The bore size of the gasket needs to be at least as big or BIGGER than your bore size otherwise it will hang into the chamber and burn up once the engine is running in a short time .


Thank you double R


live every 24 hour block of time like it's your last day on earth
Re: Steel Shim Head Gaskets- Mr Gasket vs MoPar Perform [Re: JohnRR] #255797
03/19/09 08:12 AM
03/19/09 08:12 AM
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I measure , in the shrink wrapped package , 4.420 in one direction and 4.410 in the other direction . I bought these last month .







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