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91 500SL 37k,90 300SE sold, 91 300E sold , 92 300E137k ,02 Kia Sedona ,I know..... its a Mini van.
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Discussion Starter #1
Hey guys so finally going to do my HG again , the 1992 300E 140K miles is a double paner now!!!, just oil, leak is at passenger side #6 cylinder, car runs fine, about 18K miles ago I replaced the gasket with Victor Reinz, I've asked before and was told they have a updated gasket for the M103, that's thicker and dealer only.
Also talked to the guy at the machine shop that did the work last time around and told him what's going on, he said it probably just needs a gasket, he charges $100 to skim it if needed, and the whole job went from $380 to $700 yikes!
I will check the head with an engineers straight edge.

Just got off the phone with Fletcher Jones parts guy here, asked who makes it? he doesn't know, gave me part number, they want $126 for the kit, probably going to buy it there, how do I know if its the updated thicker gasket? is there another number? anyone here know? he gave me 1030105420
Pelican Parts has the closest thing also?
Thanks!
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91 500SL 37k,90 300SE sold, 91 300E sold , 92 300E137k ,02 Kia Sedona ,I know..... its a Mini van.
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8,176 Posts
Discussion Starter #2
Oh and this time I will rent or buy a nice torque wrench!
 

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W201 Moderator
89 190E2.6- 5-speed Manual, 95 E320 Sportsline-sold, 2001 E320 4matic Wagon-sold
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3,173 Posts
Is Fletcher Jones the local MB dealer? This is the material best purchased at the dealer. Dealers are almost the same price as on-line for OEM parts.
That's what I did a couple years back. Perfect fit and no oil leaks either.
My 2 cents worth
 

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'95 E300 DIESEL, '91 600SEL, '92 600SEL
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I concur on only using the dealer headgasket kit along with a new set of genuine MB headbolts if you want this to be the last time you this job.
 

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91 500SL 37k,90 300SE sold, 91 300E sold , 92 300E137k ,02 Kia Sedona ,I know..... its a Mini van.
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Discussion Starter #5
OK thanks, just checking.
$110 for head bolts! OMG last time it was $37 for 14, price now is almost $8 each.:cautious:
 

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W124
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Mercedes has a spec for stretch on the head bolts. Steve, can you comment on whether or not a bolt that meets the stretch spec is still not as good as a new one?
 

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W201 Moderator
89 190E2.6- 5-speed Manual, 95 E320 Sportsline-sold, 2001 E320 4matic Wagon-sold
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BTW, 2 years ago they were $7. So $1 increase, not too bad.
Cost does add up but one does not want to repeat this job too often if you have a bad back like most of us.
 

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91 500SL 37k,90 300SE sold, 91 300E sold , 92 300E137k ,02 Kia Sedona ,I know..... its a Mini van.
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8,176 Posts
Discussion Starter #8
Right, so I added everything up and close to $300 in Good dealer parts, hopefully the head isn't warped.
 

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W124
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Almost all of us have the head resurfaced at a minimum following a HG replacement but they sometimes still leak leading to a suspicion the deck surface on the block is not as it once was when it left the factory.
 

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W201 Moderator
89 190E2.6- 5-speed Manual, 95 E320 Sportsline-sold, 2001 E320 4matic Wagon-sold
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3,173 Posts
I would (re-surface it) as well. And my machine shop highly recommended sanding the engine block with a block sander (nothing soft, has to be sandpaper attached to a block of wood).
If you do not sand it the block will be pitted, etc. Mine was after 200Kmiles. BTW, my head never leaked oil or water. I was just getting a valve job.

A lot of manual labor this sanding but worked for me. 5K miles and no leaks.
Toughest part is keeping the metal dust out of the engine.....
 

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Premium Member
'92 300TE 4matic 280,000miles, '92 300TE 4Matic 'Ice Blue Metalic' 101,000miles
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You'll have to get out there further to brag about no leaks......like 30-45,000 miles. There have been people on this forum that have replaced the HG routinely at ea 50,000 interval. Obviously, they are doing something wrong...no OE gasket, stretched head bolts, not torqued correctly etc, etc.

I used the Victor Reinz HG when I did the white TE. Never had any leaks past 50,000 miles. But when I do this TE, I'm using OE.

Be careful skimming your head....you can only do this once, maybe twice or you'll get interference.

Kevin
 

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W201 Moderator
89 190E2.6- 5-speed Manual, 95 E320 Sportsline-sold, 2001 E320 4matic Wagon-sold
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That will take us to 2030 I'm afraid. Most here will leave the forum by then.
I'm just happy to have followed directions, used dealer parts and not caused a disaster since it was my first try .....
 

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91 500SL 37k,90 300SE sold, 91 300E sold , 92 300E137k ,02 Kia Sedona ,I know..... its a Mini van.
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Discussion Starter #13
I will check the block, pretty sure its OK, what's weird is the last job lasted 16K miles without a leak, why at 16K miles? no overheating etc, so that's why I suspect an inferior gasket, I check the engine bay about every 3 weeks,when I did mys sons V6 Cougar years ago never had any issues at all.
I'm hoping to do this job in August.
 

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W124
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If you are having your head skimmed make sure you bring the upper timing case cover with you. It should be milled at the same time as the head. Skim it once without the cover and you might be okay - but twice, you will be shortening the head and leaving the cover the same height.
 

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91 500SL 37k,90 300SE sold, 91 300E sold , 92 300E137k ,02 Kia Sedona ,I know..... its a Mini van.
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Discussion Starter #15
OK Thanks, never even thought of that! ain't this forum great!
 

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'95 E300 DIESEL, '91 600SEL, '92 600SEL
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Don't forget to get some Hylomar while you are the dealer. And pay the extra few bucks and take the head to a machine shop to have it checked over for straightness and flatness, including replacement of the valve guide seals. It's a near 30 year old car.
 

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W124
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One of these days I am going to try an alternate torquing sequence on one of these I6 heads. When they leak as much as they do and after all we do to put it right - something else has to be done. For example, Torque the head starting from the rear and move forward instead of the middle out. Or torque the four around number 6 first and then do the "middle out thing".
 

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'92 300TE 4matic 280,000miles, '92 300TE 4Matic 'Ice Blue Metalic' 101,000miles
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Maybe like we used to do on race intake manifolds;start at opposing ends and walk each row forward.

Kevin
 

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'95 E300 DIESEL, '91 600SEL, '92 600SEL
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Don't discount the fact that all metals age, not just the moving bits. 30 year old bolts are not as fit as a new batch after having endured thousands of heat cycles.

And on something as vital as the head bolts, always use a new set without exception when doing heart surgery a.k.a. anything from the headgasket on down..
 

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91 500SL 37k,90 300SE sold, 91 300E sold , 92 300E137k ,02 Kia Sedona ,I know..... its a Mini van.
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8,176 Posts
Discussion Starter #20
Will have it checked, lastime I had the head reconditioned I gave him new valve guide seals, hopefully its all good, as I say car runs fantastic always passed the CA emissions testing.
No one mentions the washers, getting new ones $40!
already have some Hylomar sealant for that nasty timing cover gasket!
Still needing a good torque wrench , I want the longer handle one that clicks, good ones are to expensive for me at this time, I think Autozone has a tool loan service ,will see if they have one or neighbor Rick, he's a mechanic for the Edison Company.
 
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