ViperSBT

So, I have been reading about timing adjustments and have some questions:

1. What are the benefits to increasing timing to 14.5 or 16?
2. Is this something better left to the professionals to adjust or can it be handled by a DIY'er?
3. What is the cost of having a pro do it?

RCW

Increasing the timing on the 12 valve will give you more power, much better fuel economy, and lower EGT's.

What you want to do before you increase the timing is determine how you will use the truck and your driving habits. If you pull heavy loads, and gun it starting out, do not go above 14.5 or you can blow a headgasket and/or stretch the headbolts. If you are very careful about starting out and never pour on the coal with a heavy load until you are above 1,350 rpm, then set it to 16 degrees. If you run empty, and are careful with starting out, you can go to 17 degrees without any problem.

As far as cost is concerned, most shops now have what is known as a pulse sensor and use a timing light. They should be able to time it for around $300. If you do it yourself, the manual timing tools and a good dial indicator will cost you about twice the $300. Using the pulse sensor and timing light is my preferred method as you do not open the system and risk contamination. However, a good pulse sensor and the timing gear puller will cost you around $900, then add another $150 for an accurate timing light.

If you already have a good set of tools and a dial indicator, pick up Haynes Repair Manual #30041, and the timing procedure is outlined for you.

There are a number of good diesel performance shops in Vegas, just call around and get a good quote. You will probably beat the $300.