x-15 liner shims
06-07-2026, (Subject: x-15 liner shims ) 
Post: #2
RE: x-15 liner shims
== First and foremost, if the head gasket let go on the engine it means that the block needs to be counter-bored and the cylinder head is no good. - ISX's do not crush fire rings or blow head gackets unless a liner was dancing in the block.

== NEXT: Is that someone needs to find out WHY it did this. There are several reasons, and all of them point to engine abuse of some sort ... which is VERY common with ISX's. Abuses such as...

== Bad delete programming (#1 cause), as more than 90%+ of all delete programming is absolutely harmful to the engine without even adding any power yet.

== lugging the engine below 1500 RPM for most of its life. Most of these newer trucks are geared waay too tall, and the ISX's best longevity is in the 1600-1700 range, with it in the 1500 - 1900 range during heavy operating loads. It has short connecting rods and light weight pistons, very different than those yellow beasts of yester-year.

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as far as the inframe...

The shimms that come default on the new liners are to be used. Also an additional 0.020" shimms are also needed when counter-boring the block. - The block MUST BE COUNTER-BORED and liners raised in height above factory spec or the engine will not last, and you will be doing it all over again in short order. Also, everything has to be VERY PRECISE and torques absolutely correctly!.

Correct heights are as follows...
https://rawze.com/forums/showthread.php?...9#pid28349

ALSO here is the tings needed to build it right. Any compromise and your just wasting your moneys... here is info that is NOT in the manuals...
info: https://rawze.com/forums/showthread.php?...6#pid70606

One mistake, oversight, or shortcut,... and its wasted time and moneys. - Bad delete programming and its wasted moneys... NOT USING ALL OEM parts... and its wasted time and moneys...- Don't be the next fool on here in 2 years complaining that it did not stay together.


User's Signature: ->: What I post is just my own thoughts and Opinions! --- I AM Full Of S__T!.
replyreply
 Thanks given by: Ricardo , mikkhh


Messages In This Thread
x-15 liner shims - Ricardo - 06-06-2026,
RE: x-15 liner shims - Rawze - 06-07-2026



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