I bought this engine to replace a 153 block that was busted. The boat dealer, who sold it to me, thought it was a 153. It has a 4" Bore and a 3.60" stroke. 153s have a 3.875" bore and a 3.25' stroke. It had spun a rod bearing, on number 4 cylinder. I did not get the rods, but got the crank. I think .020 or .030 will clean up the crank journal with the spun bearing.
Did your 181 head have the angled ports?
I've heard they did not use the same head as the 153. I'm going to use the head from my 153, though. I had larger valves installed, hard seats and some porting.
I also made a header and intake for my engine. I'm running two Carter/Webber carbs. Got to re-do the header, though. I've got the wrong cylinders pared up, according to Tom Langdon.
Sure would lke to hear more about your Jeep and maybe a photo. Write me direct at drh@digital-link.net if you like.
Thanx, Dennis
