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Old 06-27-2007, 09:07 AM   #1
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Default OS.12 TZ / OS.12 TZ EBMOD / Max.12 SL3

Has anyone used these three motors? I trying to decide which motor for 1st nitro onroad car.

1. OS.12 TZ 3port- lower cost, lower rebuild $, how does it stack up for club racing and reliability?

2. OS EB mod 3 port- reliability, How do they compare with N/R?

3. Max .12 SL3- reliabilty, can't seem to find $ of rebuild kits.

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Old 06-27-2007, 09:26 AM   #2
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Originally Posted by ldp787 View Post
Has anyone used these three motors? I trying to decide which motor for 1st nitro onroad car.

1. OS.12 TZ 3port- lower cost, lower rebuild $, how does it stack up for club racing and reliability?

2. OS EB mod 3 port- reliability, How do they compare with N/R?

3. Max .12 SL3- reliabilty, can't seem to find $ of rebuild kits.

From my experience with OS TZ3,TZ5 and Speed. I can say the power is more than enough. I even won 9 of 12 local races last year using my TZ3 and TZ5 where most of the racers here was using Nova.
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Old 06-27-2007, 09:35 AM   #3
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Originally Posted by ldp787 View Post
Has anyone used these three motors? I trying to decide which motor for 1st nitro onroad car.

1. OS.12 TZ 3port- lower cost, lower rebuild $, how does it stack up for club racing and reliability?

2. OS EB mod 3 port- reliability, How do they compare with N/R?

3. Max .12 SL3- reliabilty, can't seem to find $ of rebuild kits.

Your best bet would be to get the stock TZ 3 port... Great motor for the price... The EB is no better then the stock TZ 3 port... The mods are very low level and the extra money could be better used on other things... The Max .12 is a very nice motor, but you'll be spending almost twice as much for it then the TZ... Get the stock TZ .12 3 port or 5 port... The extra money saved and the power of that motor will have you smiling all day at the track... PS... If you get the TZ, break the motor as per the manuel only.... .02

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Old 06-27-2007, 09:56 AM   #4
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Default OS.12 TZ / OS.12 TZ EBMOD / Max.12 SL3

What pipes are you guys using with the .12TZ3, the track I'll be racing on is what I would consider a 1/10 scale (smaller track).
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Old 06-27-2007, 09:58 AM   #5
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what car are you getting?
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Old 06-27-2007, 10:00 AM   #6
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what car are you getting?
NT1 First nitro car, I race the 007 on carpet so I figured what better choice.
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Old 06-27-2007, 03:13 PM   #7
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Default OS.12 TZ / OS.12 TZ EBMOD / Max.12 SL3

Thanks for the responses and help!
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Old 06-28-2007, 02:30 AM   #8
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Thanks for the responses and help!
the max sl3 is a better engine than the 3 port. i had a 5 port (which is quicker, but similar, if not identical in ease of tune and construction) and the max is alot smoother, and has a better mid to top possibly.

the oz 5 port is very quick, the 3 port requires a bit of dremeling to free up it's performance. this is only noticable though on a large track, small tracks it is fine stock.
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Old 06-28-2007, 04:52 PM   #9
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MAX is better engine, it also depends on the budget.
I you can afford a MAX go with it,
Have fun
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Old 06-28-2007, 07:45 PM   #10
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The MAX is virtually a 12+3 which is 10 times the motor then the O.S.
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Old 07-04-2007, 09:23 AM   #11
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the eb mods tz is nice. I run one and it keeps up with everything at my track. I have only raced it twice thou
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Old 07-05-2007, 07:42 AM   #12
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The MAX is virtually a 12+3 which is 10 times the motor then the O.S.
The Max is a short stroke engine based off of the LS3. The +12-3 engines are all long stroke engines. Big difference. The short stroke seems zippier, with more top end revs than the +12 after modification. Personally I like the short stroke Novarossi engines. I would like to see a short stroke +12 engine with a machined piston from Novarossi. Maybe call it the +12-3SS. hehe. I have been able to get a lot of power out of the short stroke Novarossi's with modification.
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Old 07-05-2007, 04:19 PM   #13
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aahh..what shim do i need to add to break-in and run my new TZ 3P on 30%...? thank's....
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Old 07-05-2007, 07:24 PM   #14
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aahh..what shim do i need to add to break-in and run my new TZ 3P on 30%...? thank's....
For a stock TZ 3P, I would recommend adding a 0.1mm shim to run 30%.
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Old 07-06-2007, 06:53 AM   #15
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thank you for the info.....
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