History/Background of This Engine
The Magnum 3.9 V6 was introduced in 1992. In 1997, a TSB was issued to fix excessive timing chain noise. The fix was to remove the cam thrust plate and chain oil tab and install the new thrust plate / chain oil tab / chain tensioner combo.
A popular option is to install a double roller timing chain instead. With a double roller, you leave the original thrust plate and chain oil tab in place and do not install the chain tensioner.
I have a 1998 model year truck and I don't know what "year" my 3.9 engine is.
It has excessive timing chain noise and I'm pretty sure it was not replaced at the scheduled service interval so I plan to replace the timing chain. I already ordered a double roller before thinking about this.
Due to there being excessive noise, I assume that my engine was built before that TSB and does not include the tensioner.
If my truck does have the one piece thrust plate / chain oil tab / chain tensioner combo, what do I need to do to install a double roller?
I've looked at all my local auto parts stores and am now kind of crunched on time to order online. I've even asked for the part from a 1996 (pre-TSB) thrust plate, but no luck.
Can I take my dremel and trim off the tensioner parts of the combo piece? If so, how do I clean up the piece so there are no microscopic metal shavings left?