944 Engine Replacement

There is a C version of those that is a 4.75" bore vs 4.5, so check part numbers carefully.

I expect you would be ahead to find a complete engine if you can. Or at least a rebuildable one.

By the time you get a head, crankshaft and maybe a connecting rod the cost is going to be right up there with a complete rebuildable engine. A good runner may be as cheap as the rebuildable core and the overhaul kit.

Finding a good complete engine can be hard. You would want to see it running if you can, otherwise you are "buying a pig in a poke" as they say. Even one with a warranty you are going to be out the labor to install and remove it when/if it doesn't work. Doing it yourself might not have the actual cash cost, but that kind of project gets bigger and bigger in my shop as soon as the first thing goes wrong!

A generator can be a good source of an engine if you can find one. Lots of them have mostly "exercise" hours on the clock.

Make sure you get a turbo engine, pistons are different in NA.

Hello All
Thanks for the replies. Unfortunately the genset I was looking at sold today so I missed out on it but now I know they are similar and what to look for I will not miss out on the next one😊

ccjersey
Unfortunately I now need more than the head, crank and conrod as the motor has been sitting in the weather for ten years and now all the timing gears are unusable, as well as the camshaft, pushrods, valves and sleeves. Do you know if the C version has the same mounting configuration as the earlier versions?

catsilver
Do you know how much difference in horsepower there is between the turbo and the normally aspirated? If I can get this machine going it will only be used for light duty work so a drop in HP probably won't matter that much. I am thinking about making it into a tool carrier with a crane jib and forks.

Regards

Phil

About a 30hp drop, quite a bit. the 4.75" bore engine should fit on the same mounts and it was NA.

The late series 944's (77J & 87J) had the D330c n/a, @100h.p., same as the D330T.

The replacement for the 944, the 930 also used the same engine initially, also set @ 100h.p. , so would also be suitable if you can find one.

Hello All
Tilly's Crawler Parts have four D330's out of various D4D's in stock. Assuming there is no difference between the block and crankshaft then I think I will take a look at one next week. $2200 each. All four have "internal issues" and that was all I could get out of them. I know its a bit of a gamble but they also told me a crank out of one would be $2750 alone.

Regards

Phil

No good, non turbo engines have different pistons and no cooling jets. Not sure if the ports exist with plugs in them in the NA engine to convert turbo, oil pump probably different, fuel pump will need changing.

Hello Catsilver
I am hoping to be able to salvage only the parts I need with the exception of the sleeves. So that is the head and valves, crank, timing gears and camshaft. I am hoping to be able to reuse three of the pistons out of the old engine and buy one piston and conrod from Cat if they are still available. Injector pump and turbo should be ok from the original engine. I will recheck the entire engine this afternoon and make sure there is nothing else I need. If I can salvage the above parts it will still be a cheaper way to go.

Regards

Phil

It should be the best way, I know the earlier 4.5" bore blocks did not have ports for piston jets, but I'm not sure of the later ones.