19887.3IDI said:
The one that is different from the other 7 has 88 cast into it as well but the hole is shaped different and I cant find anything else wrong with this engine to cause it to shake.
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I'll do this in the open, I've looked close at your cup and several images of mine. I'll be adding some more images to the other thread tomorrow.
What makes you think the PRECUP is the issue?
What do you mean shake?
First, introduce yourself here, and lets see if we can determine what's going on before throwing parts at this.
Have the injectors been pop tested? What injectors are they? How old? How old is IP?
There are a few things that can cause an issue.
What is the engine in? If it is a truck is the #1 cylinders injector line on the factory timing adapter still? If not this could affect timing of one cylinder...
Just too many things to learn, before I pop one precup.
Fee free to browse the pics tomorrow in that thread, there are two more sets of heads photographed in detail.
Al