Has anyone ever installed a Toyota 5L sleeve in a 2L-II?

[tristanceleazer]

I want to make a Toyota "4.5L", 92mm stroke but 99.5mm bore (unlike an original 5L which has a 96mm stroke)

The 2L-II has the same wrist pin as the 3L and 5L so the pistons should plug right in, also the exact same cylinder head between all of them (5L-E has bigger valves but std 5L uses the same part number head as 3L, 2L-II, 2LT-II, etc)

Has anyone ever done this?

Also the 5L is very rare here in Indonesia, if it was readily available I would skip this entirely and just do a direct engine swap... Found someone selling 5L pistons, rings, and sleeves here for around $300 and I'm tempted to bring my block to a machine shop...

 

[TheBussman]

boring the block out has been tried and it broke though into the water jackets. it MIGHT be ok to keep going larger and use a sleeve. if all that works out i think that using the 5l piston and 2lt crank/rods will result in having a lower compression ratio then either the 5l or 2l. you might be able to offset grind the crank slightly to get the numbers right but its going to take alot of math. i think you'll get more input if you post in the diesel section.

 

[Eurasiaoverland]

As above, I once found a post on an Australian or NZ forum from someone who bored out a 2L block and blew through the cylinder wall once the engine was running.

You could try a wet liner... I would certainly be interested in the results.

The question would be if the gudgeon pin to crown height on the 5L piston is the same as a 2L/3L piston.

99.5 x 92 mm is a very oversquare design for a diesel engine in a 4x4 (if it's for a Hilux etc) where torque is more important than engine speed.

You'd probably want to try a few camshafts to see which suits it better.

Maybe this is the missing 4L engine, and maybe there is a reason Toyota never made it.