GoDspEed

I need help!!

It's about the MT12 engine i'm just wondering how many kinds of MT12 are out there? theres three right?

MT12sgs rear-exhaust engine, sg WHAT'S SG?
MT12sr replacemaent engine, Rotary Carb
MT12ss rear-exhaust engine, Slide carb

what MT12 is the one with the three port?

me43

sg is pilot shaft

and theres acctually only 2 the regular 3 port, and the turbo 5 port


after that the only differences are the carbs. and crankshafts


the 3 port one is the non turbo one


and the MR-12 is a totally different engine

Im2lazy

The MT12 is not offered in a 5 port version Me43... though a turbo and standard plug version is available (as indicated in the list).

What kind of a car are you putting this engine into, godspeed?

GoDspEed

Im2lazy

i'm going to put it in a MTX-3, my dust car!

so all the MT12 are 3 port engines?

what engine is everyone runing?

mckrooz

iTrader: (8)

I think it's the MR12 that comes in a 5 port.

me43

my bad

GoDspEed

ok,

Is the Mr12 a better engine then the mT12?

trey

The MR12 is a short stroke motor (more bottoe end power) and the MT12 is a long stroke motor (more topend power). So it depends on the track that you run on. If the track is tight and technical, without too much straight then the MR12 would probably be the better engine for that track. If the track is fast with lots of straight then the MT12 would have better top end. The MR12 gets out of the corners a little bit quicker than the MT12

kreidel

iTrader: (2)

Trey,

I am sure that the short stroke MR12 is a top end preforming engine while the MT12 is a torque producing engine being a long stroke.

trey

I did not mean to say that the MR12 doesn't perform well at the top end. It is a very strong motor, they both are. I have one of each.

intimidator

yeah trey,kreidels right, you got it backwards the 5-port mr-12 is better on a big track,its got more power at the top end than the mt-12.and the mt-12 has more bottom end.i believe the r in mr-12 stands for revs,while t in mt-12 stands for torque.

Old Skool

Yep, the MT-12 is a long-stroke design w/more botom-end, while the MR-12 has more top-end.

EdwardN

iTrader: (1)

well, actualy the MR12 and MT12 are both the same strock engines -14 mm. the difference is lenght of the conrod-MR12 is 25 mm and MT 12 is 26.5mm (pressure angle to cranckshaft from piston is different). There is more very important difference,( which actualy nobody so far mentioned or I just didn't find it)-due to the longer conrod, MT 12 case has much bigger internal case volum ( I hope no need to explane why) and during the work, there is lower vacuum level at induction process and lower positive pressur during the transfer. So, this makes engines work differently. Both of them can generate top and bottom end prety good power, but the way how to make it is different. So you can base on this.