LOW ET

iTrader: (109)

i want to use an os engine in my touring car and will run under roar rules. can you guys help me pick which one?

OSMG2031 OS Speed Tuned 12TZ Spec II
http://www.osengines.com/engines/osmg2031.html

OSMG1999 EB mod. 12TZ 3-Port
http://www.osengines.com/engines/osmg1999.html

OSMG1997 12TZ(P)-T 3-Port
http://www.osengines.com/engines/osmg1995.html

V for Victory

The spec 2 is definately the fastest out of the 3. I like the motor alot!

Osiris 75

iTrader: (18)

chippy

iTrader: (4)

Yes I just got the spec11AL
For Xmas
Hope its as quick as my ZACS tuned OS it was a weapon

LOW ET

iTrader: (109)

does anyone have dyno graphs of these engines? you guys are saying the spec II is faster but the eb mod. .12 puts out more power (so it says).

chippy

iTrader: (4)

Don’t know about specs
But a guy had a TZ5 eb mods and my TZ3 spec I was faster all round
more punch more top end

madjack

iTrader: (28)

I'm the proud owner of a Spec II

The motor is very fast, easy to tune and represents the lastest from OS designers.

LOW ET

iTrader: (109)

ok so everyone likes the spec II, now how does it compare to the italian engines out there? sirio, rossi, etc... which engine is top dog on the track?

everyone please bare with me as i'm transforming from a basher into a real racer. (ntc3 with a .18 tz to a 720 with a legal .12)

chippy

iTrader: (4)

If money is no object go JP ,Max Power or Novarossi
But the cheaper engines are not far behind these JL ,OS performance wise

For club racing I use a standard TZ3 with a 5port crank in it works great

LOW ET

iTrader: (109)

you use a 5 port in a touring car?

chippy

iTrader: (4)

A 3 port engine with a crank from a 5 port
still 3port piston liner and crank -case in a MUGEN MTX4

tony montana

iTrader: (76)

I have the eb mods and its fast enought for me, but I would buy the speed If I was buying a new one. My next engine will probaly be a maxpower

E.Rocha

Low ET,
buy JL the new one is very good better engine than OS, OS yes is fast but is weak easy breaking the con rod, when it comes to engine Japaneses engine weak Italian engine is the best.

LOW ET

iTrader: (109)

are we talking about this engine?
http://www.ofna.com/eng-jlr-red-dot-on-road.php

LogiK

iTrader: (11)

I just got the JLR Evo 3 and breaking this in, holy sh**!

Its pretty rich still and its so torquey and just doesnt gaining rpm lol, just keeps on going.. Thumps up from me so far