4G64 SOHC to DOHC swap info

[BradMph]

Not sure about the DSM stuff, but...

...6-7 bolts motors means how many bolts are holding the flywheel onto the engine, and then there are...
...Wideblock and narrowblock are just about the same except the blocks. The wide is 13¼ from the centers of the hollow positioner studs on the rear of the block. The narrow is 12½ inches across, give or take ¼in. They were made in 2 sizes because the larger would not fit into the engine compartment of passenger cars.

As a rule of thumb:

Turbo + North/South orientation = wideblock
all others (including East/West orientation Turbo) = narrowblock

There are exceptions to the rule though, some 4G52s and 4G54s are wideblock depending if auto or not, and some later model 4G64 van engines are wideblock also.

This thread is a little on the older side and it might be worth your time to start your own if you like and that way you can go back to it faster using the My Post link at the title menu. Just a suggestion to help speed your searches.

[DroppedMitsu]

6 and 7 bolt refers to how many bolts hold the flywheel to the crank. There are ways to tell a 6 bolt block apart from a 7 from the outside, do a search on google and you will find info on how to tell the difference. 6 bolt went up to about 92.5 maybe 93. Pretty sure anything after that is 7 bolt for DSM's anyways

[sleeps]

Yeah, most if not all 93 and up are 7 bolt.

[Lon Moer]

Since this is a tacked thread, I saved this link for the water block offs, ect.; Jay Racing

This product was originally designed to facilitate mounting a DSM head onto a Mitsubishi Mighty Max truck.