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Old 11-26-2007, 08:14 PM   #286
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Want to know what is the different for the 12TZ3 SpecII and the AL version thanks!
Only the cooling head is different
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Old 11-27-2007, 10:10 AM   #287
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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.
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Old 11-27-2007, 10:21 AM   #288
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Want to know what is the different for the 12TZ3 SpecII and the AL version thanks!
AL Ver. is Alum. heatsink lower price !
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Old 11-30-2007, 12:03 AM   #289
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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;
Attached Thumbnails
O.S. .12 TZ(P)-T3 Speed Tuned-1.jpg   O.S. .12 TZ(P)-T3 Speed Tuned-2.jpg   O.S. .12 TZ(P)-T3 Speed Tuned-3.jpg   O.S. .12 TZ(P)-T3 Speed Tuned-4.jpg   O.S. .12 TZ(P)-T3 Speed Tuned-5.jpg  

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Old 11-30-2007, 12:05 AM   #290
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continued...
Attached Thumbnails
O.S. .12 TZ(P)-T3 Speed Tuned-6.jpg   O.S. .12 TZ(P)-T3 Speed Tuned-7.jpg  
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Old 11-30-2007, 12:22 AM   #291
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continued...
Interesting info. (as a SpecII owner I was unaware of the case differences)

BTW what the [email protected] happened to the spec II sleave?
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Old 11-30-2007, 02:44 AM   #292
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Interesting info. (as a SpecII owner I was unaware of the case differences)

BTW what the [email protected] happened to the spec II sleave?
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.

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Old 12-01-2007, 04:05 PM   #293
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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.
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Old 12-03-2007, 08:32 AM   #294
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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)
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Old 12-22-2007, 03:29 AM   #295
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Default Spec 2 run-in method

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?
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Old 12-22-2007, 03:45 AM   #296
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very good motors
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Old 12-22-2007, 09:08 AM   #297
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Originally Posted by nickiphorosn View Post
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?
I used 2) per the manual. (seems fine)
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Old 01-28-2008, 06:16 PM   #298
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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?
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Old 01-30-2008, 10:50 AM   #299
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Quote:
Originally Posted by DS Motorsport View Post
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.
Yes It does. it also gave the motor a smooth acceleration.
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Old 02-04-2008, 01:37 AM   #300
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Yes It does. it also gave the motor a smooth acceleration.
get the nova exhaust gasket too because the OS one isn't big enough
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