Isuzu Trooper Owners Club UK™

dani4JB1T · Posted: Sun Apr 30, 2006 17:03 Post subject: 4JB1T overahaul

HI all

I opened this post to continuing my engine overhaul story here and keep an order in the forum. It comes from here:

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dani4JB1T · Posted: Sun Apr 30, 2006 17:29 Post subject:

Well ...Finally take off the head cylinder yesterday. I found several sticked water pipes. They all are going to trash.

When I look for first time my engine without the head cylinder, I saw my Isuzu diesel owner life in a second, then... i woke up to reality again. Just cannot belive what my eyes were seeing. Shocked

Looks like a mud pump cylinder....or any, but not a car motor cylinder. Shocked

I got water into the chambers... Crying or Very sad

I found drops of water, sulphated zones, lots of heat spots and lots of soot in the pistons heads & upper part of liners.

I have to check if the head cylinder is twisted or not.
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dani4JB1T · Posted: Sun Apr 30, 2006 17:33 Post subject:

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all you have to do to call
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dani4JB1T · Posted: Sun Apr 30, 2006 17:39 Post subject:

the head cylinder

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all you have to do to call
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jjcymru · Guest

did you suffer injector failure?

Looks like you need a new short motor at least, i cant imagine the cylinder head is much better, i notice lots of pitting on the outside of the combustion chamber of cyl1, it appears like your engine ran lean and you melted the pistons and more than likely warped the cylinder head.

dani4JB1T · Posted: Mon May 01, 2006 16:48 Post subject:

Injectors seems to be good. I have never got dark smoke. However Im going to test them at the lab to check if I need new nozzles.
_________________
all you have to do to call
is hold her hand, stand a while
and then smile and we'll understand

dani4JB1T · Posted: Mon May 01, 2006 17:31 Post subject:

According to ther book I had a B grade head gasket (second from 3 grades options). What`s that mean ??...the engine was overhauled before or it is just a factory option...??

cheers
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all you have to do to call
is hold her hand, stand a while
and then smile and we'll understand

markymoan · Posted: Mon May 01, 2006 17:35 Post subject:

Maybe its had a gasket done before, and a skim??
I dont know if a,b,c is the same as notches Question

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dani4JB1T · Posted: Mon May 01, 2006 17:38 Post subject:

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all you have to do to call
is hold her hand, stand a while
and then smile and we'll understand

markymoan · Posted: Mon May 01, 2006 17:40 Post subject:

Yup, it looks like its been done before Sad

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dani4JB1T · Posted: Mon May 01, 2006 17:44 Post subject:

mmmh...so this is the last life it lefts

Crying or Very sad

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all you have to do to call
is hold her hand, stand a while
and then smile and we'll understand

markymoan · Posted: Mon May 01, 2006 17:55 Post subject:

But if its done properly it should never go again, i'm a great believer in doing a job once a proper skim and then using the correct sequence and tork settings Smile

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jjcymru · Guest

not necessarily been done before cos differing piston heights from manufacture alter the need for a thick gasket. But id get it skimmed and run gasket C.

dani4JB1T · Posted: Mon May 01, 2006 19:40 Post subject:

suree...im putting my best efforts to fix this engine and let it run again for a heaps years more. Razz

cheers
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all you have to do to call
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Grandad · ******* Joined: 22 Sep 2005 Posts: 1902 Location: NORFOLK

having the head skimmed does not alter the height of the pistons above the surface of the block and it is this measurment that determines the head gasket thickness
if new pistons are used allfour pistons are to be measurred from block face to top of piston then take an average of the measurements and choose the appropriate head gasket from the table
the gasket has nothing to do with whether the head has been skimmed the thickness of the head will determine whether it can be skimmed if it is warped