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4m40 head gasket

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unclebazwold
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PostPosted: Fri Mar 20, 2015 16:56    Post subject: Reply with quote

Rollocks Crying or Very sad
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PostPosted: Fri Mar 20, 2015 16:56    Post subject: Google Ads keep this community free to join!


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Langley



Joined: 30 Jul 2013
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PostPosted: Fri Mar 20, 2015 17:14    Post subject: Reply with quote

Large ones

Still at least I know how to do the job this time.
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andyman



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PostPosted: Fri Mar 20, 2015 21:49    Post subject: Reply with quote

Sorry to hear that, I  Smiled too soon.
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Green Grouch
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PostPosted: Fri Mar 20, 2015 22:31    Post subject: Reply with quote

Langley wrote:
Large ones

Still at least I know how to do the job this time.


That's a real shame after all that work, time, research etc.

Do what I do and throw money at it and then educate others on how not to do it next time  Embarassed

You do sort of enjoy it though I bet ? Or you will when you do get it sorted !! Smile  Smile
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Et1310



Joined: 28 Feb 2012
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PostPosted: Tue May 05, 2015 12:57    Post subject: Reply with quote

Meccano for big kids.... :? unless you get some one else to do the work for tea and bacon sandwiches. Embarassed

Yes you know who you are :D
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Et1310



Joined: 28 Feb 2012
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Location: Doncaster

PostPosted: Tue May 05, 2015 13:00    Post subject: Reply with quote

Be careful with the sequence when closing the head bolts as well.

I had to redo the job as the head was "floating"
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Langley



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PostPosted: Tue May 05, 2015 16:45    Post subject: Reply with quote

Just followed the mitsi manual. Next job cam chain.
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Pagan Celt



Joined: 15 Nov 2016
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Location: Suffolk England

PostPosted: Sat Feb 03, 2018 11:09    Post subject: Reply with quote

Hi Guys.
Found a replacement head and ready to put it on. Can anyone recommend a source for a good quality (OEM ?) gasket. Having read through am I right in thinking the 4 notch is the one to go for? And any idea what can I expect to have to pay?

Also, is this a good time to check/tweak/replace timing chain?

Cheers guys

PC
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Pagan Celt



Joined: 15 Nov 2016
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PostPosted: Sat Feb 03, 2018 11:10    Post subject: Reply with quote

Sorry, should have specified - the head in on the 4M40  Embarassed
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Lewis
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PostPosted: Sat Feb 03, 2018 12:47    Post subject: Reply with quote

The thickness of the gasket is greater with the four notch than a one notch. They are set to fit the amount of piston head gap required between the head and the block. It is wiser to go for the same amount of notches that were on the one you removed. If you threw it away and can't remember how many it had then the four notch is the safest to go for.

When the head gasket on my previous Deli went I fitted an aftermarket one, which was recommended by the guy who tested the head for cracks. it was a far higher quality:-




I've seen similar quality ones made by a company called EVELEX, though without the copper seals. Which I know are being sold on ebay, by a couple of different sellers, in a gasket kit:-

https://www.ebay.co.uk/itm/MITSUBISHI-PAJERO-SHOGUN-MONTERO-CANTER-2-8-TD-TDI-4M40-T-HEAD-GASKET-SET-1994-/160761327558


HTH
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Last edited by Lewis on Tue Oct 29, 2019 9:26; edited 1 time in total
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Pagan Celt



Joined: 15 Nov 2016
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Location: Suffolk England

PostPosted: Sat Feb 03, 2018 13:51    Post subject: Reply with quote

Thanks Lewis,

Is that a metal gasket? In your opinion is that then good as a mitsy original?

Cheers
PC
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Lewis
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PostPosted: Sun Feb 04, 2018 4:38    Post subject: Reply with quote

You must have missed what I said at the end of the second paragraph.  Wink
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Last edited by Lewis on Thu Nov 07, 2019 7:00; edited 1 time in total
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Pagan Celt



Joined: 15 Nov 2016
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PostPosted: Mon Feb 05, 2018 20:58    Post subject: Reply with quote

Ah yes. lol. My bad.

Sorry to labour the point but I REALLY don't want to be doing this again in a few weeks/months. The link you posted is to a gasket you recommend, right?
Is that about the best available cos I'd be prepared to pay more if there's something better?  

Thanks again for your advice

PC
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Green Grouch
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PostPosted: Mon Feb 05, 2018 21:24    Post subject: Reply with quote

I did a gasket change around three years ago and did not buy a gen mitsy.

I didn't see a make but purchased from Dorset auto spares . They are primarily an industrial estate supplier to all the garages in the area but let walk in off the street sorts like me purchase also.


They were also good in allowing me to order all the sizes and take them home so.i would have the correct 1 ready when I changed, and let me return the others I didn't need after.

Mine still working fine  Smile

Ps, they didn't have the three notch which I needed,  but didn't know I needed ( the most common size I believe), so I stuck a four in.

I needed the vehicle back as soon as for work and advice at the time said it would be okay which it was Smile
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skodarapid



Joined: 10 Jul 2018
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Location: Northamptonshire

PostPosted: Tue Oct 29, 2019 0:20    Post subject: Reply with quote

Lewis wrote:
The thickness of the gasket is greater with the four notch than a one notch. They are set to fit the amount of piston head gap required between the head and the block. It is wiser to go for the same amount of notches that were on the one you removed. If you threw it away and can't remember how many it had then the four notch is the safest to go for.

When the head gasket on my previous Deli went I fitted an aftermarket one, which was recommended by the guy who tested the head for cracks. it was a far higher quality:-



I've seen similar quality ones made by a company called EVELEX, though without the copper seals. Which I know are being sold on ebay, by a couple of different sellers, in a gasket kit:-



HTH


I've looked at the 4M40 workshop manual to determine which gasket is required after measuring piston protrusion, but the data varies depending on Pajero / L200, which data would the Delica follow?  L200 is basically 0.1mm greater piston protrusion for any given gasket thickness.
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Lewis
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PostPosted: Tue Oct 29, 2019 9:28    Post subject: Reply with quote

I would go with Pajero, The L200 is later spec.

NB: I'm not a Mitsu mechanic, so would also suggest checking with your local dealers parts department.
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skodarapid



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PostPosted: Tue Oct 29, 2019 12:18    Post subject: Reply with quote

Makes sense to me.  I think I'm going for the thickest gasket option anyway to minimise risk because I've looked at the distance from the head's "fire-face" to the face of the valves and it is sort of 0.3mm less on the new AMC head compared to the old (unknown brand) head, which seems a tad risky to me since it's an interference engine.  Is my logic sounding okay to others here?
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skodarapid



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PostPosted: Wed Nov 06, 2019 18:10    Post subject: Reply with quote

An update to my previous post to help any future readers, the 0.3mm difference I found between the old head and AMC head is okay as both were within the 'valve sinkage from cylinder head bottom' standard values found in the 4m40 manual specifications section.
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andyman



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PostPosted: Wed Nov 06, 2019 19:55    Post subject: Reply with quote

Don't L200 and Pajero have the 2.5L 4D56 engine? (Not 2.8L 4M40)
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Green Grouch
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PostPosted: Wed Nov 06, 2019 21:09    Post subject: Reply with quote

I can't comment on the L200, but I think every pajero I've seen has 2800 intercooler on it?  Laughing

Don't quote me, as I have been wrong a couple of times Andy.

I've also forgotten how many times I've been wrong  Confused
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