16v narrow pistons into wide block

Yeti · Post by **Yeti** » Thu Mar 03, 2005 1:13 pm

Anyone else tried this?

Are the cranks the same between the wide and narrow blocks?

My theory is this:

I have a 1983 Lancer Turbo (RWD) with the wide 4G63T 8v engine. I have a complete spare engine for it.

I also have a 16v narrow engine from a galant, which was being built for my 1987 Colt.

I want to fit the 16v engine's pistons and head to the 8v wide block, so it bolts right up to the Lancer's gearbox.

Can anyone see any problems with this?

For those of you who don't know, I can't just put the 16v head on the 8v block with the standard pistons as it creates a 13 to 1 (or thereabouts) compression ratio - the combustion chamber in the 8v head is much larger than on the 16v one.

If you reckon this is feasible, I'll start work on it straight away!

Post by **DJpowerHaus** » Thu Mar 03, 2005 1:45 pm

I am pretty sure it will work.. crank, rods, pistons, heads should all swap over, maybe with a few filled in oil passages on the head. I could measure stuff on my stuff if you measure it on your stuff

.

Yeti · Post by **Yeti** » Thu Mar 03, 2005 2:00 pm

I'll get back to you once I've gathered it all up.

Actually, I'll be fine - I've got a spare 8v wide engine, I'll just compression test it, then sell the head

then I can try the 16v head on it for oil passages and the like (think it's OK), and I need to get some 7.8 to 1 compression pistons for the 16v engine from somewhere.

Mike · Post by **Mike** » Thu Mar 03, 2005 2:25 pm

They should go in fine. I would double check the bore and stroke though. I believe the correct engine code is G63B like it is over here, but I could be wrong. The Mitsubishi 2.0L is relatively the same as it started, but many modifications have been made over the years. You also might want to check the the rods are the same.

Yeti · Post by **Yeti** » Thu Mar 03, 2005 3:30 pm

Yeah, the 8v version is 4G63BT really.

The bore and stroke is the same, it's just the size of the big ends I'm worried about really - planning to just fit the 16v pistons complete with the con rods - that way I can just fit new big end bearings and piston rings and that'll be the bottom end done.