Go Back  R/C Tech Forums > General Forums > Nitro On-Road
Nitro engine tuning >

Nitro engine tuning

Nitro engine tuning


Old 06-14-2006, 06:22 AM
Tech Initiate
Thread Starter
Join Date: Jun 2006
Location: Athens, AL
Posts: 47
Default Nitro engine tuning

I've lost the factory literature for an OS .12, so can someone tell me what the initial setting should be for the metering and needle valves and how to get the adjustments in the ball park for performance.
atr4tigers is offline  
Reply With Quote
Old 06-14-2006, 06:27 AM
Tech Elite
iTrader: (4)
rmdhawaii's Avatar
Join Date: Feb 2006
Posts: 3,804
Trader Rating: 4 (100%+)

O.S. Engine Product Manuals can be found here:
rmdhawaii is offline  
Reply With Quote
Old 06-24-2006, 10:07 PM
Tech Initiate
Carbonfi_dragon's Avatar
Join Date: Jun 2006
Location: Tokyo, Japan
Posts: 39

Depends which OS.12...OS-Speed Fact. tuned TZ.12 factory settings are needling (slow speed valve) screw in/out until the head of the screw is alligned with the casing. The idling adjustment valve is the same. The needle vale should be 1.75 turns turned out from the fully closed position. Those are the regular settings.

My terminology for the different valves may be a little odd as my manual is in Japanese, but the TZ engines should all be the same...

Best of luck!
Carbonfi_dragon is offline  
Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off

Thread Tools
Search this Thread

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service