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OS Speed 12XZ engine ~~FULL PHOTO~~

OS Speed 12XZ engine ~~FULL PHOTO~~

Old 03-31-2009, 04:59 PM
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What is your safe temparature for this motor'
Thanks'
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Old 04-01-2009, 12:25 AM
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Originally Posted by rc4fun
What is your safe temparature for this motor'
Thanks'
i have mine at around 220. but it depends on where ...
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Old 04-23-2009, 10:11 AM
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have running mine with 1/2L 5% and 1L O'D 20%, then turn it to race run, compare to Spec II the XZ had more bottom power and great top speed , i ran it about 95 to 100F and with a RP6 plug, OS t-1050 pipe, will try RP7 plug next time.
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Old 04-23-2009, 09:16 PM
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Originally Posted by FF25510
have running mine with 1/2L 5% and 1L O'D 20%, then turn it to race run, compare to Spec II the XZ had more bottom power and great top speed , i ran it about 95 to 100F and with a RP6 plug, OS t-1050 pipe, will try RP7 plug next time.
I ran it on State Title with stock plug (RP6) and T-1050. Heaps of bottom end power compare with Speed-I and Speed-II. Especially with T-1050, it makes the XZ sing! But so bloody thirsty!!!
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Old 04-24-2009, 01:06 AM
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Originally Posted by jca2000au
I ran it on State Title with stock plug (RP6) and T-1050. Heaps of bottom end power compare with Speed-I and Speed-II. Especially with T-1050, it makes the XZ sing! But so bloody thirsty!!!
yep, the temp i ran with have had arround 5m15s run time so next time i will test if RP7 can help a little more.
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Old 04-25-2009, 11:28 PM
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what restrictor do you use? I seem to be able to get more than 6 min all the time using RP6 and 1050
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Old 04-26-2009, 05:22 AM
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Originally Posted by silverM3
what restrictor do you use? I seem to be able to get more than 6 min all the time using RP6 and 1050
you mean the insert of the carburetor? 5.5 i have 5m45s+ on a Spec II with P7 plug and T1050 pipe, so i must try to squeeze them out.
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Old 05-08-2009, 07:05 AM
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Default 20% or 30%?

Does this engine come shimmed for 20 or 30%? If I run 20% does that help with run time?

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Old 05-08-2009, 07:57 AM
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Originally Posted by jland
Does this engine come shimmed for 20 or 30%? If I run 20% does that help with run time?

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30%, as the manual said, remove the 0.2 when using 20% i'm try to have more run time too
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Old 05-08-2009, 08:18 AM
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Originally Posted by FF25510
30%, as the manual said, remove the 0.2 when using 20% i'm try to have more run time too
how many shims come with this engine?
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Old 05-08-2009, 08:31 AM
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never mind post above
saw the pics, appear as .3 for shims (1 .1 & 1 .2)
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Old 05-09-2009, 07:54 AM
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besides sage and os1050 pipe, what other pipe is suitable for a technical short track?

thanks in advance
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Old 05-09-2009, 02:42 PM
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Originally Posted by nazwenhome
besides sage and os1050 pipe, what other pipe is suitable for a technical short track?

thanks in advance
I had a lot of success with the Hec pipe from Harmony models
Attached Thumbnails OS Speed 12XZ engine ~~FULL PHOTO~~-touring-chrome-pipe.jpg  
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Old 05-09-2009, 02:49 PM
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Default pipes

For longer tracks I use
the Mugen Pipe 2501
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Old 05-09-2009, 03:06 PM
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Questions??

Originally Posted by chippy
For longer tracks I use
the Mugen Pipe 2501
have you tried novarossi pipes and header?
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