1993 exchange for 1998 6.5 Turbo Diesel

[Mike/Trudy]

We have this 1993 Chev HD 3/4 ton 4x4 6.5 Turbo Diesel extended cab the engine is has suffered enough with over 450,000 klm a new drivers side head and now a cracked cylinder. The truck is to beautiful and to much work into keeping it new to scrap, it has been like trying to put down an old dog for 5 months now and to repair the original engine $$$$$.$$. A 1998 6.5 Diesel engine has come our way at a cost we can't refuse is there some differences we should know before saying yes.
Greatfull if someone could help.

[JohnC]

If you can get the oil cooler and lines from the '98 it'll be a cake walk.

the '98 has bigger lines and fittings. Don't neck them down to fit the '93 as the '98 oil flow rate is higher. Also, '98 cooling parts will interfere with the mechanical pump.

[Mike/Trudy]

Thanks for the info
We have heard similar info while trying to decide to repair the existing engine. We think there were some modifications on this engine from the factory as there is one big 4 core steel radiator in the engine compartment with two huge tanks one side transmission coolant the other side oil coolant. Do you think we should we just block the oil coolant holes on the rad and get a separate smaller one just for the oil alone? The existing rad is 19 months in use and was hard to find, almost had to draw pictures when we were ordering, it took two times to get the right one and was very expensive, could this be the newer style oil coolant lines you speak of.
Thank you again

[Robyn]

If this were my choice, I would plug off the old cooler and install a set of after market lines/hoses and cooler.

As mentioned dont restrict the flow.

The factory lines do leave a lot to be desired but if you can find a good set your good to go.

Use a new set of quick connectors in the block if you go with stock lines.

The O ring seal in used ones will usually leak after you remove the lines and reinstall.

The after market stuff usually uses JIC fittings.

The ready made "KITS" usually use stainless braided lines but its not absolutely necessary. Pressure hose thats rated for oil and heat will be fine.

Almost any parts store can fix you up with reusable fittings/hose.

Best of luck on the project

Robyn

[Mike/Trudy]

Great Ideas from both of you and has helped a lot wouldn't have known with out JohnC and Robyn exactly just is a few more $ and a tape measure.
Thanks again