tl2111

iTrader: (21)

Only the cooling head is different

DS Motorsport

iTrader: (2)

Can someone tell me if a novarossi header will fit on a os 1040 Pipe?.

I'm thinking of trying a os speed and it would cost me less if i only have to buy the pipe for it instead of the exhaust set.

RC MARKET

iTrader: (12)

AL Ver. is Alum. heatsink lower price !

asil

guys. I've stripped down an OS Speed I and II. I realized that crankcases are different from each other! SpecII has a circular opening at the top of the exhaust outlet and has a different machining around the inlet port.

We discussed here that we may modify OS TZ 5port sleeve to a SpecI. I examined that specII has a modified OS TZ 3port sleeve.. In the pictures sleeve on the left is a specI sleeve..

I used specI crankcase-piston-sleeve and specII cranksahft-magnesium head and will see the result in our upcoming Bursa Race.

Here are the pictures;

asil

continued...

madjack

iTrader: (28)

Interesting info. (as a SpecII owner I was unaware of the case differences)

BTW what the h@ll happened to the spec II sleave?

asil

specII was one of my friends and it broke conrod in its first race
I bought it for a reasonable price.. case, conrod, piston, sleeve, cylinder head are wrecked.. ceramic rear bearing, crankshaft, magnesium head, carburretor are fine.. I got suprised with specII's cylinder head bolts. They are nearly the same shape with 1/1 engine cylinder head bolts.

Asil

Rc_Boy89

iTrader: (1)

Hi guys,
I am looking at buying a TZ(P) motor. Just wondering if there is much difference between the standard tz compared to the eb mods tz? My local club races at a large carpark area with a pvc pipe set out track, nothing majorly large so just wondering if a standard tz would be fine? so I dont have to run my bigger spec motors. also pipe combos? ive heard the os t-1040 is good.

madjack

iTrader: (28)

One race weekend in the books and I'm VERY happy with the OS Speed Spec II.

My driving was suspect...fought a push all weekend with a new car, but the engine was flawless. Great idle, good bottom end...and amazing on top. (had several "pit visits" asking for information)

nickiphorosn

i 've just received my spec 2 as well,but i don't know wht run-in method should i try:the 1)WAT METHOD 2)the one referred in the manual? or 3)the standard and well known to me slow run in method with about 7 tanks on the bench and about 8 tanks slow on the road?....any suggestions?

johnkemp

iTrader: (2)

very good motors

madjack

iTrader: (28)

I used 2) per the manual. (seems fine)

dameetz

Anybody knows where can i get Spec 2 crankcase online? I accidentally broke the sleeve guide pin ( the one that stop the sleeve from moving around), or is there anything that i can do to fix it?

ShermanSim

iTrader: (2)

Yes It does. it also gave the motor a smooth acceleration.

CraigM

iTrader: (34)

get the nova exhaust gasket too because the OS one isn't big enough