DETROIT INFRAME COST??

An inframe no matter if done by yourself, or at a dealer, is just piston kits and cam bearings. That's a liner, piston, rings, wrist pin, and oilers, plus cam bearings. Also should always do main and rod bearings while you got it apart.

Detroit sells multiple levels of rebuilds They used to call it the step up levels. For instance, Step up 1 would be the basic inframe and new injectors. Step 2 might include a new water pump and oil pump. Step 3 would be a new head and turbo.

 

The Detroit dealer in the great lakes area, including Freightliner, had a deal that was either $6,700 or $7,600 for step one non-egr rebuild. It might be national, and it has 100,000 mile warranty and thousands of shops.

 

Don't you just hate autocorrect?

 

Yep. It's bound and determined to make me look like a complete idiot. As if i needed the extra help.

 

A rebuilt head is 2 grand. I feel that it is the most important piece to replace on the motor while doing a overhaul as it contains most of the high wear fast moving parts.

You lose a valve or valve spring and retainer and your new rebuild swallows a valve you will be back to square one plus some.

Go on youtube and search 12.7 Detroit rebuild. There is a ton of very good vids covering the process.

 

Sorry but liners sink in the block over time. They all do. Cast iron takes a beating. Then you end up with six liners at six different heights. Most need cut. If your not checking and setting liner height. You will have head gasket problems. But then 6k overhaul and a 30k overhaul is a difference.

 

The counter bore is the area of the block the liners set in. And yes the head must come off any type of rebuild. Instead of repairing/rebuilding a head. Buy a remaned head. It will cost almost what a head cost to get a valve job and new injector cups. The cam is not part of the head. It sets down on the head. A 12.7 is an overhead cam, so stupid cheap and stupid easy.

I forgot to mention earlier, if you don't have the updated head bolts, you may buy them. The old style were one use only.

 

On every 60 series I've ever done that has not happened. The old v6 and v8s it was very common. not so much on series 60 engines. If a guy is worried about it a very cheap sled gauge will show if the new liners are not at the right height. Simple check.

 

The correct way is when you disassemble it you check old liners if they are low. And I promise you something with 1mill on it they will be, you cut them. Sled gauge is correct tool. Anyone building a engine, cat, Cummins,Detroit should care about it. We are talking few thousands. This is why head gasket fails in 250k.