Quote:
Originally Posted by Graymist
Quote:
Originally Posted by GMAN
I would expect to have an in-frame somewhere around or after 750,000 miles. You can go more than 1MM miles before having an in-frame. It is all in the maintenance. I would not get too hung up on miles. You can often find a truck with higher miles which has been well maintained and had an overhaul or major engine work. I would not want to spend $50,000 on a truck that I would expect to overhaul in a year or two.
How does one decide when an inframe-job is due ? What does it actually entail in terms of the work required to be done, and cost ? How is it different from a rebuilt engine ? Which one is preferable, a rebuilt or an inframe ? Thanks.
An in-frame is a rebuild. You may be thinking of a re-manufactured engine. The remain engine is usually done at the factory. You pull your old engine out and put the new one in. Those are rather expensive. A remained CAT runs about $25,000, as I recall. Most engines can be rebuilt from about $10-18,000. With the last work I just had done on one truck my rebuild is about $25,000.
An in-frame replaces the pistons, liners, injectors, sleeves, o-rings, turbo, oil pump, water pump, bearings, cam shaft, etc., You basically replace all the moving parts and bearings. It may not be necessary to replace the injectors and turbo, but I would not want to rebuild an engine without doing so. Some re-builders may not want to warranty an engine without replacing all the components. Some may also want to replace the radiator. Of course, all belts and hoses should also be replaced. There are different levels of re-builds. Personally, I think it is a good idea to just replace everything while you have things torn down.
There are signs that an engine is having problems. If you drive a truck on a regular basis, you should be able to tell a difference in how the tuck performs. Loss of power, smoking, missing, etc., are common signs. If you regularly do an oil analysis, you can also spot problems with excessive wear before they become critical.