R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Nitro On-Road > Onroad Nitro Engine Zone

Reply
 
Thread Tools Search this Thread
Old 04-17-2008, 08:58 AM   #346
Tech Addict
 
keavze's Avatar
 
Join Date: May 2007
Posts: 590
Default

Quote:
Originally Posted by colt1402 View Post
But fro now is 0.4 head shims total. Meaning i need to buy a 0.1shim to put it total of 0.5shims on running 25%?
shims is not actual head clearance.
some engines come with stock 0.1-0.2mm head clearance without shims at all, while some come with 0-0.05mm head clearance.
__________________
>>> the "SNAKE" doesn't bite; it STINGS! <<<
keavze is offline   Reply With Quote
Old 04-17-2008, 11:05 AM   #347
Tech Apprentice
 
Join Date: Mar 2005
Posts: 96
Default

COlt:

You state that you have an aluminum head. Could you provide the engine's part number?

I am about to purchase this engine, and all I see out there is Magnesium heads.
SasonRC is offline   Reply With Quote
Old 04-18-2008, 07:35 AM   #348
Tech Fanatic
 
colt1402's Avatar
 
Join Date: Dec 2006
Posts: 868
Trader Rating: 90 (100%+)
Default

The engine number on the box is 11387. OS Speed 12tz specII ALU.
__________________
*************************Addicted To RC*************************
colt1402 is offline   Reply With Quote
Old 04-18-2008, 11:12 AM   #349
Tech Apprentice
 
Join Date: Mar 2005
Posts: 96
Default

Great, thanks!!
SasonRC is offline   Reply With Quote
Old 04-22-2008, 02:43 AM   #350
Tech Elite
 
LOSI123's Avatar
 
Join Date: Jan 2007
Location: Gold Coast-Australia
Posts: 2,616
Trader Rating: 63 (100%+)
Default

I am buying some bearings from the local bearing shop,
and i was wondering if i should pull of the inside sheild of the front bearing , or just leave both sheilds on the bearing?

as i noticed that it doesnt seem to get lubed from the fuel?
LOSI123 is offline   Reply With Quote
Old 04-22-2008, 04:52 PM   #351
Tech Elite
 
LOSI123's Avatar
 
Join Date: Jan 2007
Location: Gold Coast-Australia
Posts: 2,616
Trader Rating: 63 (100%+)
Default

i have the 5 port engine with the silver cooling head, Any one here know if the front of the crank case has a lube hole?

as i have just put my motor back together
LOSI123 is offline   Reply With Quote
Old 04-23-2008, 07:51 AM   #352
Tech Elite
 
Rick Vessell's Avatar
 
Join Date: Jan 2002
Location: Mars
Posts: 2,302
Trader Rating: 9 (100%+)
Default

Yes it does. The outer shield is there to primarily keep dirt out of the engine, not to seal the crankcase. No need to worry about lubrication of the front bearing.
Rick Vessell is offline   Reply With Quote
Old 04-23-2008, 07:44 PM   #353
Tech Master
 
madjack's Avatar
 
Join Date: Sep 2002
Location: Orange County
Posts: 1,769
Trader Rating: 20 (100%+)
Send a message via Yahoo to madjack
Default

does anyone have the part number for the spec II aluminum head?
madjack is offline   Reply With Quote
Old 04-24-2008, 10:25 AM   #354
Tech Champion
 
Join Date: Sep 2002
Location: Chicago Illinois USA
Posts: 9,106
Trader Rating: 16 (100%+)
Send a message via ICQ to Solara Send a message via AIM to Solara
Default

Quote:
Originally Posted by JonnySocko View Post
Yes it does. The outer shield is there to primarily keep dirt out of the engine, not to seal the crankcase. No need to worry about lubrication of the front bearing.
Socko...I've got my 720 ready for your Mugen...are you scare now..?
Question for you....I just got my OS 12 back from modification....what OS plugs were you using @ last year Byron Race? Also, what pipe were you using..? Does Tower still carry the same pipe that you were using..?

R U still running the same Spec II from last year? When are you hitting LHR? Walt and I are getting the 1/8th ready...(actually, he ran last week already and sounds like the track is in very good shape after the long winter break)
Solara is offline   Reply With Quote
Old 04-24-2008, 02:18 PM   #355
Tech Elite
 
Rick Vessell's Avatar
 
Join Date: Jan 2002
Location: Mars
Posts: 2,302
Trader Rating: 9 (100%+)
Default

Mr. Lo,

I'm not scared of you. You forget that I'm the Ironman at Leisure!

I run the O.S. 1040 pipe. http://www3.towerhobbies.com/cgi-bin...&I=LXKBH1&P=SM

I run either the #7 or #8 plug. #8 if it's a long track and I want a little more rpm.

Yep, still running the same engine from last year. I'm probably going to Cincy next week for MWS but after that I want to come up and run at LH.
Rick Vessell is offline   Reply With Quote
Old 04-24-2008, 03:28 PM   #356
Tech Champion
 
Join Date: Sep 2002
Location: Chicago Illinois USA
Posts: 9,106
Trader Rating: 16 (100%+)
Send a message via ICQ to Solara Send a message via AIM to Solara
Default

Quote:
Originally Posted by JonnySocko View Post
Mr. Lo,

I'm not scared of you. You forget that I'm the Ironman at Leisure!

I run the O.S. 1040 pipe. http://www3.towerhobbies.com/cgi-bin...&I=LXKBH1&P=SM

I run either the #7 or #8 plug. #8 if it's a long track and I want a little more rpm.

Yep, still running the same engine from last year. I'm probably going to Cincy next week for MWS but after that I want to come up and run at LH.
Yeah...you are scare, because you are running MUGEN...

Anyhow, thanks for the info....good luck @ Hamilton, let me know how good (or bad) is....hopefully it is not a tire eater track like other said.

When you are back, I think we can setup a Sunday race @ LHR.
Solara is offline   Reply With Quote
Old 05-25-2008, 10:13 PM   #357
Tech Elite
 
Chickentrader's Avatar
 
Join Date: Feb 2007
Location: Landsborough, Queensland, Australia.
Posts: 2,142
Trader Rating: 13 (100%+)
Default

I need to re-sleeve an O.S. TZ(P) T5, and the new sleeve is too tight to fit push into the cylinder?? I tried to force it at first, but it just jammed and got stuck, it only came off when I heated it with a heat gun. I have since tried freezing the sleeve and heating the cylinder to normal operating temp for the engine, but it will only push down about 10 millimetres before getting stuck. Has anyone else had this kind of problem, and is there a solution? The new piston seems to fit well into the head; moves freely to about half ways up the cylinder before getting too tight. The old sleeve was also stuck, but popped out when I put a zip thigh in the exhaust port, and pushed it out with the piston.

Kindest regards,
Lars.
Chickentrader is offline   Reply With Quote
Old 05-27-2008, 08:55 PM   #358
Tech Master
 
Join Date: Feb 2004
Posts: 1,158
Trader Rating: 13 (100%+)
Default

What the differents between the 11385 and the 11387?

Thanks,
Joe
Joe Maxey is online now   Reply With Quote
Old 05-27-2008, 09:26 PM   #359
Tech Master
 
Ed Anderson's Avatar
 
Join Date: Jun 2006
Location: N.J.
Posts: 1,373
Trader Rating: 26 (100%+)
Default

About 16 grams.

11385 = speed specII (Magnesium head)
11387 = speed specII AL (Aluminum head)
Ed Anderson is offline   Reply With Quote
Old 05-28-2008, 10:42 AM   #360
Tech Regular
 
jameslow's Avatar
 
Join Date: Feb 2007
Location: Somewhere?????
Posts: 381
Trader Rating: 1 (100%+)
Default Shim question!

What are the numbers of shim i need to use when i using 16% fuel for these engine?

.12 TZ t3/t5 = ?
.12 TZ speed tuned = ?
.12 TZ spec II = ?

Thanks!
__________________
Waiting!
jameslow is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
OS Speed 12TZ (P) T3 Speed Tuned Engine SpeedyDad R/C Items: For Sale/Trade 6 03-02-2009 04:49 PM
GRP tuned 21 vs OS speed 21 big_klemo Nitro Off-Road 10 08-11-2008 08:50 PM
O.S. .12 TZ(P)-T3 Speed Tuned NIB!! occ Australia For Sale/Trade 2 10-14-2006 11:21 PM



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

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



All times are GMT -7. It is currently 04:12 PM.


Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net