Quote Originally Posted by SuperSloth View Post
So, probably gonna be time for a new thread soon? Dunno whether to keep posting here and not clutter things up..

Anyway. After waiting altogether too long for this thing to show up from Cyprus it appears that a 4d56 thermostat housing is not the same as a 4d55 thermostat housing.

Anyone happen to have an extra for a 4d55 I could buy? Or should I consider getting a 4d56 water pump and keep this? This has been quite an exercise in parts hunting.
That is the "water outlet" where the thermostat goes, the piece you bought bolts at the top of the engine by the injection pump. (im interested if you wanna sell it lol)
d55 and d56 water outlet (thermostat on waterpump) are the same
Quote Originally Posted by dancinggecko View Post
Quite a few of the components for the gas engines are interchangeable with the diesel. The main bearings are the same between the 2.6 and the 4D55. I haven't tried, but they may very well be the same thermo housing.
I could be wrong, but i recall reading the mains were bigger, i know the g54 is 60mm, but i think the d55 is 66mm

G54 thermo housing MIGHT have same bolt pattern, however g54 thermo housing turns almost 90 off intake. The d55 is straight off the water pump