When to do a overhead run?

I don't think the problem is buying a used truck. I think the problem is that many times we have unrealistic expectations for what we are buying.

 

If I didn't have unrealistic expectations, I wouldn't have bought it.

 

It's easy to not think about what we are asking all of the components to do on a daily basis. I haul a lot of steel, a lot of it. I am regularly 78k+ lbs 6-7 days a week. We think "it can handle it", but do that every day, all day and we will break everything! I guess I have to give myself a reality check from time to time when things break.

 

I think the cummins would probably be the worst engine anyone can buy. They just have so many problems.

Cat may be allright but they're expensive to repair. And they have their quirks too. Detroit seems to be the only way to go.

 

I just spit beer out of my nose... that hurt.

 

Depends on the model of each engine. This statement is really too vague.

 

True. As I understand it, the N14 is a good engine.

 

I've been in the trucking business since the 60's.Owned my own truck and trailer for 42 years before I retired.Inline Cummins power is all I ever used.Simplicity,dependability,cost of ownership,couldn't be beat.The last truck I owned was a 95 IHC Eagle 9300,with an N-14,500.By far and away the best engine I ever owned.Reliability,power,easy starting,Cummins got everything right with that one.Had many friends with N-14's,all the same,loved them.

Now the new Cummins IS engines,I know little about them,just whay I've read,but doesn't seem like they're in the same category,look to be a problem child in some cases.They have zero in common with the old N,NT NH 855 design Cummins engines.

 

@Lepton1 dont feel to bad!!!i didn't realize you had that problem? I planed on running the overhead in the first 10k miles when I bought my truck (no dyno either) well that turned into 100k miles.

I'm sure mine was bad or going bad when I purchased it but I paid the price too. That's crazy that they were so ate up!!!! That is the worst I have seen.

To the original poster try NOT to "wait till you need it"

 

I hope you are running consistant Oil Samples to see how your engine is doing. Its not mileage based for overheads. Its like telling someone to change their tires every 250k. It depends! Keep a close watch on the wear metals, fuel dilution, soot, etc in your oil samples!