4M engine

[Typrus]

Hello. I know this is a Supra forum, but I figured I'd try here and the Cressida.
I'm looking at a 79 Cressida with a 4M. I do not know much about the engine, other than it is carbureted and an early "M" series.

So.... I know any other "M" (5MGE, 7MGE) is pretty much a direct drop-in. Correct?

My question is- can anyone give me any good info on the 4M and can anyone also offer insight as to whether, if I were to get it, a later 5MGE swap might or might not be worth it?

[jon_570]

the 4m is a 2.6l with power output was 108-122 hp (81-91 kW) at 5600 rpm and 134-141 ft·lbf (181-191 Nm) at 3600 rpm.

the 5m was a 2.8l with power output at 116 hp (87 kW) at 4800 rpm and 145 ft·lbf (196 Nm) at 3600 rpm

if you want more i would suggest possibly a 5MGE or 6MGE.. or if you want to get a 7mgte and get all the problems fixed with it..

if youre looking for more power i wouldnt do the swap because youre really not getting too much more if any.

[Typrus]

Ok. Power and ease of finding parts were my thought motivations. And better fuel economy. Dunno if a 5MGE will get better than a 4M. (shrug)

Thanks!

[bgrieger]

5m has far more support, and can borrow the turbo and manifold from a 7m for an added kick. The 6M was available too...basically a 7m with a 5m head when you get right down to it. The 5m itself isnt much of a step up, but there are far more goodies available for it than the 4m. The 7m has the most support.